The 2026 Earnout Benchmark Report: Prevalence, Sizing, Duration, Metric by Deal Type

Most founders accept earnouts because the headline number looks bigger and the buyer makes it sound like a formality. The data tells a different story. Across the published SRS Acquiom annual M&A Deal Points Studies, the median earnout in U.S. private-target deals with earnouts pays out at only about 21 cents on the dollar of its theoretical maximum, per the SRS Acquiom 2024 M&A Claims Insights Report, with roughly half the maximum paid on the subset of earnouts that achieve anything. About 25-30% of earnouts pay zero. That means when a buyer offers $10M cash plus a $3M earnout, the seller should mentally book it as $10M + ~$1.4M of expected value, not $13M. The 30-second mental math most founders do at LOI stage materially overestimates the realized outcome.

This report aggregates earnout benchmark data across deal-size bands, structure types, and metric types. We compiled prevalence, sizing, duration, and metric data from public SRS Acquiom Deal Points Studies, ABA Private Target Deal Studies, Pitchbook deal commentary, BVR DealStats summaries, and ABA business-law section materials on earnout drafting and dispute litigation. Where benchmark ranges are observed rather than guaranteed, we say so. Where drafting traps are statutory (Delaware implied covenants, GAAP-definition gaps), we reference the underlying authority.

We are CT Strategic Partners, a U.S. buy-side M&A firm based in Sheridan, Wyoming. Our model is buyer-paid: when a transaction closes, the buyer compensates us. You as the seller pay nothing, sign nothing, and walk anytime. We publish this report because the earnout-benchmark data is the most consistently mispriced piece of LMM deal-making. Sellers accept buyer-friendly earnouts on the assumption that they’ll be paid in full, then discover post-close that the metrics were defined in ways that make full payout almost mathematically impossible.

A note on the bar. Most online earnout articles oscillate between (a) generic explainer content that doesn’t tell you the prevalence numbers or duration distributions, and (b) marketing pieces that recommend specific deal lawyers. This report is neither. It is a benchmark document built from aggregated public data, written for the founder reading an LOI with a 25%-of-purchase-price earnout line item and trying to decide whether to negotiate it down, accept it with stronger protections, or push for cash equivalents.

What an earnout is: the mechanical definition

An earnout is contingent purchase consideration paid by the buyer to the seller based on the post-close performance of the acquired business. It is not a guarantee. It is a contractual right to receive additional consideration if specified performance thresholds are met within a defined measurement period.

The mechanical sequence

1. Closing. Buyer pays seller the upfront cash consideration (sometimes also rollover equity, seller note, or other components).
2. Measurement period begins. The earnout clock starts running. Typically 12, 24, or 36 months from closing.
3. Buyer operates the business. Buyer has full operational control. Seller may or may not retain influence (depending on negotiated operating covenants and employment agreements).
4. Metric is measured. At the end of each measurement period (often annual), the buyer calculates the relevant metric (EBITDA, revenue, gross profit, customer count, etc.) per the contract’s definitions.
5. Payment is calculated. Per the earnout formula (cliff, ratchet, sliding scale), buyer determines what portion of the maximum earnout is owed.
6. Dispute resolution if applicable. Seller may dispute the buyer’s calculation. Resolution typically via accounting expert determination or arbitration, depending on the contract.
7. Payment. Buyer pays seller the earned portion of the earnout. Typically within 30-60 days of period-end and final calculation.

What earnout is not

• Not a seller note. A seller note is debt with a defined repayment schedule. Earnout is contingent on performance; nothing may be paid.
• Not rollover equity. Rollover is upfront equity in the buyer’s HoldCo, not contingent on future performance metrics. Earnout is a contractual payment right, not equity ownership.
• Not escrow / holdback. Escrow and holdbacks secure indemnification obligations (representations, warranties, working-capital trueups). Earnout is positive contingent consideration on top of the base purchase price.
• Not a guarantee. The buyer has no obligation to operate the business in any particular way absent specific operating covenants in the earnout agreement.

Earnout prevalence by deal-size band: the 2026 benchmark table

The most important benchmark for a founder is the prevalence rate, the percentage of deals that include an earnout at all. The three most authoritative 2025 studies measure slightly different deal populations, so they report different numbers, and the honest answer is to cite each one rather than blend them into a single figure:

• Seyfarth Shaw 2025 Middle Market M&A SurveyBook (11th annual, published September 2025, 150-plus middle-market private-target agreements signed in 2024 and the first half of 2025): 13% of deals included an earnout, down from 15% in the prior survey.
• ABA 2025 Private Target Mergers & Acquisitions Deal Points Study (transactions executed or completed in 2024 and Q1 2025): earnouts appeared in 18% of private-target deals, down from 26% in the 2023 study.
• SRS Acquiom 2025 M&A Deal Terms Study (2,200-plus private-target acquisitions, 2019 through 2024): earnouts were used in roughly 22% of non-life-sciences deals in 2024, which the firm describes as slightly above the historical 20% norm. The 2023 spike (closer to 30-37%) did not repeat in 2024.

SRS Acquiom is the source closest to the lower middle market specifically. Its commentary states that more than a third of lower middle market buyers insist on an earnout, and that smaller LMM deals (under $25M) often carry an earnout that is, as a percentage of the closing payment, about twice as large as the earnout on a deal double the size. The directional pattern below, larger transactions and smaller transactions behaving differently, is consistent across the studies. The exact percentages are CT Acquisitions estimates calibrated to the published studies, and we flag them as such.

The table below is a CT Acquisitions estimate. It reads the published study averages (Seyfarth 13%, ABA 18%, SRS Acquiom ~22% non-life-sciences, “more than a third” for the lower middle market) against the consistent finding that earnout structures behave differently across the size spectrum. Treat the bands as directional, not as survey data.

Deal-size band (EBITDA)	Estimated earnout prevalence	Earnout size (% of total consideration)	Most common duration
$500K-$2M EBITDA	~25-40%	20-40%	12-24 months
$2M-$5M EBITDA	~25-35%	20-35%	24 months
$5M-$15M EBITDA	~18-28%	15-30%	24 months
$15M-$25M EBITDA	~15-25%	15-30%	24-36 months
$25M-$50M EBITDA	~12-20%	10-25%	24-36 months
$50M+ EBITDA	~10-18%	10-20%	24-36 months

Note on the direction. Earlier versions of this report showed prevalence rising with deal size. The SRS Acquiom 2024 data points the other way for the lower middle market: earnouts are more common, and proportionally larger, on smaller deals, because the valuation gap and the buyer’s underwriting risk are widest there. The earnout size column reflects SRS Acquiom’s finding that the median non-life-sciences earnout was about 31% of closing payments in 2024, and that sub-$25M deals skew higher than that.

Read carefully. The prevalence number is the percent of deals where earnout appears at all. The sizing range is what the earnout is, as a percentage of total consideration, when it appears. So a $10M EBITDA deal sold to a PE buyer should expect an earnout proposal in approximately 50% of cases, and the earnout will typically be 15-25% of total consideration ($1.5M-$2.5M on a $10M deal).

The buyer-type prevalence split

Buyer type	Earnout prevalence	Why
PE platform funds	50-65%	Risk-share when growth thesis is aggressive, retention tool for sellers staying on
PE add-on capital	30-45%	Less common as platforms standardize add-on structures; rollover preferred for alignment
Strategic acquirers (public)	40-55%	Used when buyer can’t verify integration synergies upfront or when seller projections are aggressive
Strategic acquirers (private)	45-60%	More earnout risk-sharing because strategic doesn’t have PE-style debt facility
Family offices	25-40%	Less common; family offices prefer cleaner structures with rollover instead
Independent sponsors / search	45-60%	Compensates for sponsor capital constraints; seller note + earnout common

What drove the prevalence increase from 2024 to 2026

1. Macro uncertainty pricing. Buyers price earnouts as risk-shares when forward macro is uncertain. The 2024-2025 environment (rate volatility, recession-watching, sector-specific disruptions) increased buyer demand for performance-contingent structures.
2. Higher debt costs. PE sponsors with more expensive senior leverage reduce upfront cash and push more of the headline into earnouts to keep total leverage manageable.
3. Aggressive seller projections. Buyers facing seller financial models showing 15-25% YoY growth use earnouts to put the seller’s money where the seller’s projection is.
4. Sector-specific accelerants. Healthcare services, business services, and technology-enabled services see particularly high earnout prevalence (often 65-75% at $5M+ EBITDA) because forward growth is harder to underwrite.

Earnout duration distribution: 12, 24, 36, and beyond

Earnout duration is the second-most-important structural variable after sizing. The published distribution from SRS Acquiom and aggregated transaction data:

Duration	Frequency (% of earnouts)	Typical buyer rationale	Seller risk profile
12 months	15-20%	Validate run-rate, customer retention, transition completion	Lower risk; faster resolution
18 months	5-10%	Single measurement at 18mo or 12+6 staggered	Moderate risk
24 months	45-55%	Most common; tests growth trajectory through full second annual cycle	Median risk; standard market
36 months	25-35%	Tests longer-term growth, common for higher-growth or projection-aggressive deals	Higher risk; more events between close and final measurement
48-60 months	5-10%	Used for highly technical earnouts, milestone-based (e.g., FDA approval), or extremely long sales cycles	Highest risk; treat as quasi-rollover

The annual measurement vs. cumulative measurement question

Independent of total duration, the contract specifies whether the metric is measured annually (with payment per period) or cumulatively (with payment based on aggregate performance over the full duration). The two approaches yield different risk profiles:

• Annual measurement: seller is paid in installments at year 1, year 2, year 3, etc. A bad year offsets future earnouts only via cumulative caps. A great year locks in payment for that year regardless of future performance.
• Cumulative measurement: seller is paid based on aggregate performance over the full duration. A great year 1 followed by a bad year 2 may zero out the year 1 contribution if the cumulative threshold isn’t met. Cumulative measurement is more buyer-friendly and more common in 2026.

The seller’s negotiation position: push for annual measurement with no cumulative offset, or hybrid structures with a minimum guaranteed payment if year 1 hits a threshold, regardless of cumulative outcome.

Revenue vs. EBITDA vs. gross profit vs. customer-count: which metric and why

The choice of earnout metric is the single most contested structural element. Buyers and sellers want different metrics because each has different manipulability and noise characteristics.

Distribution of metric types in 2026 LMM earnouts

Per the SRS Acquiom 2024 data, the metric mix is the reverse of what many earnout explainers claim. In 2024, revenue was the more common earnout metric at roughly 62%, while pure EBITDA or earnings metrics were used in only about 22% of earnouts. Sellers increasingly demand revenue precisely because it is harder for a buyer to manipulate after closing. Just as important, SRS Acquiom found that 68% of earnout deals use multiple metrics rather than a single one, so a pure-revenue or pure-EBITDA split understates how often the two are combined.

Metric type	Approx. frequency (SRS Acquiom 2024)	Manipulability (buyer)	Noise (external factors)
Revenue	~62% (most common single metric)	Low to medium (channel stuffing, recognition timing)	Medium
EBITDA / earnings	~22%	High (margin manipulation, allocations, owner add-backs)	Medium
Multiple metrics combined	~68% of deals use more than one	Varies by combination	Varies
Other (gross profit, customer count, KPI)	Remainder	Low to medium	Low to high

EBITDA-based earnouts: why buyers prefer them and why sellers should fight

EBITDA-based earnouts are the buyer’s preferred structure because EBITDA is the metric buyers underwrite to (multiples are EBITDA-based, debt covenants are EBITDA-based, exit values are EBITDA-based). Aligning the earnout to EBITDA is consistent with how the buyer thinks about the business.

Why sellers should push back hard: EBITDA is the most manipulable metric in the buyer’s control. Specific manipulation vectors:

• Overhead and management-fee allocations. Buyer allocates parent-company overhead to the acquired business, suppressing reported EBITDA. PE sponsors specifically allocate ‘monitoring fees’ or ‘transaction fees’ that depress EBITDA without affecting underlying operations.
• Capex vs. opex shifts. Buyer accelerates discretionary opex (marketing, R&D, headcount investment) into the earnout period, suppressing EBITDA. The post-earnout cleanup restores the run-rate.
• Customer or contract reallocations. Buyer moves profitable customers or contracts to affiliated entities, leaving the acquired business with lower-margin work.
• Add-back disputes. Pre-close EBITDA includes seller add-backs (owner compensation normalization, one-time items). Post-close, the buyer may refuse comparable add-backs, distorting the comparison.
• Accounting policy changes. Buyer changes revenue recognition, inventory accounting, or amortization policy, depressing reported EBITDA.

Revenue-based earnouts: why sellers prefer them

Revenue is harder to manipulate than EBITDA. Manipulation vectors are limited to (a) timing of revenue recognition, (b) channel allocation, (c) customer reallocations. These exist but are more visible and harder to defend in dispute.

The buyer’s objection: revenue earnouts incentivize the seller to chase top-line growth without regard to profitability. The seller’s counter: pair revenue earnout with a gross-margin floor (must hit revenue target AND maintain gross margin above X%).

Gross profit hybrid: the middle ground

Gross profit (revenue minus COGS) sits between revenue and EBITDA. Less manipulable than EBITDA because parent-company overhead is below the line. More aligned with operating economics than pure revenue. Gross-profit earnouts are growing in 2026 as a negotiated compromise.

Customer-count and specific-KPI earnouts

For specific situations, the metric is a non-financial KPI: customer count, locations opened, contract count, certifications obtained, regulatory approvals. These are clean (objectively measurable) but only fit specific situations (e.g., franchise builds, regulatory milestones, FDA approvals in medical-device deals).

The metric-pairing playbook

Seller priority	Recommended metric structure
Maximum payout probability	Revenue, no margin floor, annual measurement
Balanced	Revenue with gross-margin floor, OR gross profit metric
If forced to accept EBITDA	EBITDA with frozen pre-close accounting policy, fixed overhead allocation, GAAP definition, audit rights, annual measurement
Milestone-driven business	Specific KPI (customer count, regulatory approval, etc.) with clear measurement criteria

Threshold types: cliff, ratchet, sliding scale, cap, floor

The payout structure converts the measured metric into a dollar payment. Four common architectures:

1. Cliff (binary)

Seller is paid the full earnout if the threshold is hit, zero if not. Most aggressive structure for the buyer; most punitive for the seller. Approximately 10-15% of earnouts use pure cliff structures.

Example: $2M earnout if year-2 EBITDA ≥ $2.5M, zero otherwise. A year-2 EBITDA of $2.499M pays zero.

2. Ratchet (stepped)

Seller is paid in tiers based on hitting successive thresholds. More granular than cliff but still has dead zones between tiers. Approximately 20-25% of earnouts use ratchet structures.

Example: $0 if EBITDA < $2M; $1M if EBITDA $2M-$2.5M; $2M if EBITDA ≥ $2.5M. A year-2 EBITDA of $2.49M pays $1M.

3. Sliding scale (linear)

Seller is paid proportionally between a floor and a cap. Most seller-friendly structure because near-miss outcomes still pay out. Approximately 40-50% of earnouts use sliding-scale structures.

Example: $0 below $2M EBITDA; linear payout from $0 to $2M as EBITDA moves from $2M to $2.5M; $2M if EBITDA ≥ $2.5M. A year-2 EBITDA of $2.25M pays $1M (half of max).

4. Multiplier (uncapped or high-cap)

Seller is paid based on the amount by which the metric exceeds a threshold, sometimes with no cap or a very high cap. Rare in conventional LMM deals (less than 5%); more common in earn-up structures for growth-equity transactions.

Example: $0 below $2M EBITDA; for every $1 of EBITDA above $2M, seller earns $5. A year-2 EBITDA of $3M pays $5M (5x the $1M overage).

Caps and floors

• Cap: maximum total earnout payable. Standard in 95%+ of structures. Typical caps: 15-30% of total purchase consideration.
• Floor: minimum earnout payable if any threshold is missed but a base level is met. Uncommon (less than 15% of deals) but worth negotiating. Example: minimum $500K floor if year-2 EBITDA hits 80% of target, regardless of cumulative outcome.
• Catchup: if year 1 misses but year 2 over-performs, the year 2 over-performance can ‘catch up’ year 1’s miss. Seller-friendly; common in 24-36 month annual-measurement structures.

The seller’s preferred payout architecture

In priority order: (1) sliding-scale with floor; (2) sliding-scale without floor; (3) ratchet with three or more tiers; (4) cliff. The single most impactful structural negotiation is moving from cliff to sliding-scale, which materially increases expected value of the earnout.

Earnout drafting traps: the 8 mistakes that turn earnouts into disputes

Most earnout disputes are not about whether the metric was hit. They are about how the metric should be calculated. Eight drafting traps cause the majority of post-close disputes:

1. No GAAP definition (or non-frozen GAAP)

If the earnout EBITDA isn’t defined as ‘calculated in accordance with GAAP consistently applied as of the closing date,’ the buyer can change accounting policies and depress reported EBITDA. The seller’s protection: fix the accounting policies as of close and require any policy changes to be normalized in the earnout calculation.

2. No fixed overhead allocation

Buyer allocates parent-company overhead, monitoring fees, or shared-services costs to the acquired business. The seller’s protection: cap overhead allocation at the pre-close run-rate (or zero if the seller was a standalone business), and require any new allocations to be approved by an earnout-period dispute mechanism.

3. No customer or contract reallocation protection

Buyer moves profitable customers, contracts, or revenue streams to an affiliated entity. The seller’s protection: explicit prohibition on transferring revenue or customers out of the acquired business during the earnout period without seller consent.

4. No audit rights

Without audit rights, the seller is dependent on buyer-supplied financial statements to verify earnout calculations. The seller’s protection: explicit audit rights at year-end (seller’s accountant or a mutually-agreed independent accountant), with buyer paying audit costs if material discrepancies are found.

5. No operating covenants

Without operating covenants, the buyer has full discretion to run the business as it sees fit, including in ways that depress earnout metrics. The seller’s protection: specific operating covenants requiring the buyer to (a) operate the business in the ordinary course, (b) maintain pre-close levels of marketing and sales investment, (c) not change pricing policy materially, (d) not terminate key personnel without cause, (e) maintain pre-close customer concentration policies.

6. No good-faith covenant or implied covenant exclusion

Delaware law and most state law imply a covenant of good faith in earnout agreements (see Lazard Technology Partners, LLC v. Qinetiq North America Operations LLC, Del. Supr. 2015, and progeny). But buyers often try to disclaim or weaken this covenant via explicit contract language. The seller’s protection: do not accept disclaimers of the implied covenant; if anything, add explicit good-faith language and prohibitions on actions taken with the purpose of suppressing the earnout.

7. Working capital games during earnout period

Buyer manages working capital (collections, inventory, AP timing) in ways that distort EBITDA via depreciation, write-offs, or inventory adjustments. The seller’s protection: require consistent working-capital management and explicit policy on inventory write-downs, reserves, and similar discretionary items during the earnout period.

8. Customer attrition allocation rules

If a major customer terminates post-close, does the lost revenue count against the earnout? This is a high-friction area. The seller’s protection: define a customer-attrition carveout (e.g., revenue from any customer that terminates due to buyer actions, service degradation, price increase, contract dispute initiated by buyer, is normalized out of the earnout calculation). Bilateral protection: customer attrition due to seller-side events or market shifts is the seller’s risk.

The drafting checklist

• GAAP definition with frozen accounting policies as of close
• Fixed overhead allocation at pre-close run-rate
• Prohibition on transferring revenue/customers out of acquired business
• Audit rights at year-end with buyer paying if material discrepancies
• Operating covenants on ordinary-course operation, marketing spend, key personnel
• Explicit good-faith covenant; no disclaimer of implied covenant
• Working-capital management consistency requirement
• Customer-attrition allocation rules (buyer-caused attrition normalized out)
• Annual measurement with optional cumulative catchup, not cumulative-only
• Sliding-scale payout structure (not cliff)
• Dispute resolution via accounting expert determination (not litigation)
• Acceleration on change of control of buyer or sale of acquired business
• Escrow or letter-of-credit support for earnout (in case buyer credit deteriorates)

Earnout collection rates: what percent of earnouts actually pay out?

The single most useful piece of data for a founder evaluating an earnout proposal is the historical collection rate. The published SRS Acquiom Deal Points Studies report aggregated earnout outcomes across thousands of private-target transactions. The summary:

Aggregate earnout payout statistics

Outcome	Frequency (% of earnouts)
Earnout paid in full (100% of maximum)	20-25%
Earnout paid in part (1-99% of maximum)	50-55%
Earnout paid zero	20-30%

Average payout as percent of maximum

The SRS Acquiom 2024 M&A Claims Insights Report gives two figures that answer different questions. Across all deals with earnouts (excluding life sciences), earnouts pay only about 21 cents on the dollar of the maximum potential. That cross-deal average includes the large share of earnouts that pay zero, so it is the right number for setting expectations before signing. For the subset of earnouts that achieve any payout at all, about half the maximum dollars are paid. So a seller offered a $5M maximum earnout should plan around an expected value closer to roughly $1M, not $5M, and should understand that even a “successful” partial earnout typically pays about half the headline number.

Payout rate by metric type

Metric type	Average payout (% of max)	Why
Revenue-based	55-65%	Harder for buyer to manipulate; revenue more predictable
Gross profit	45-55%	Less manipulable than EBITDA but more than revenue
EBITDA-based	35-45%	Higher buyer manipulability; overhead allocations and accounting changes
Specific KPI / milestone	50-70%	Binary outcomes; either hit or miss

Payout rate by duration

Duration	Average payout (% of max)
12 months	55-65%
24 months	40-50%
36 months	30-45%
48-60 months	25-40%

The pattern is consistent. Shorter durations and less-manipulable metrics produce higher payout rates. As duration increases, more macro, operational, and buyer-discretion events accumulate, reducing average payout.

Disputed vs. undisputed payouts

Approximately 30-40% of earnouts experience some dispute between buyer and seller during the measurement period or at settlement. Of disputed earnouts, the settlement outcome distribution is:

• Buyer prevails entirely: 15-25% of disputed cases
• Negotiated settlement (seller gets some additional payment): 50-60%
• Seller prevails entirely: 15-25%
• Litigation or arbitration to final award: 5-10% of disputed cases

The implication for sellers

Two implications:

1. Discount earnout headline value by 50-60%. A $3M earnout on a $10M base deal should be mentally booked at $1.2M-$1.5M expected value, not $3M. This is the right framing for evaluating offer-on-offer comparisons.
2. Negotiate hard on structure to lift the expected value. Moving from EBITDA to revenue, from 36-month to 24-month duration, from cliff to sliding-scale, from no-audit to audit-rights, from buyer-friendly GAAP to frozen-GAAP-with-fixed-overhead can lift expected payout from ~40% to ~60%+. On a $5M earnout, that’s $1M+ of additional expected value, often more than the negotiation cost.

When buyers insist on earnouts: the seller’s negotiating position

Some sellers can negotiate out of earnouts entirely. Others cannot. Knowing which scenario you are in is essential to negotiating strategy.

Buyers most likely to insist on earnout

• Buyers underwriting aggressive growth. If the seller’s projection shows 20%+ YoY EBITDA growth, the buyer will almost certainly propose an earnout to share the projection risk.
• Buyers in volatile or disrupting sectors. Healthcare, technology, sectors facing regulatory shifts or AI disruption draw heavier earnout asks.
• Buyers with customer-concentration concerns. If the top customer is 20%+ of revenue, buyers use earnouts to share the concentration risk.
• Buyers with founder-dependence concerns. If the business is heavily dependent on the seller’s personal relationships or technical expertise, buyers use earnouts as a retention mechanism (seller stays to earn out).
• Strategic acquirers underwriting synergies. If the deal economics depend on integration synergies, buyers use earnouts to share the synergy-capture risk.
• Independent sponsors / search funders. Capital-constrained buyers use earnouts to bridge valuation gaps.

Sellers most able to negotiate out of earnouts

• Sellers in competitive multi-bidder processes. If you have 3+ LOIs, the buyer offering the cleanest cash structure (no earnout) often has the strategic advantage to differentiate on terms.
• Sellers with stable, predictable financial histories. A 5-year track record of consistent EBITDA growth with low customer concentration weakens the buyer’s earnout rationale.
• Sellers in cash-favorable sectors. Some sectors (steady recurring-revenue businesses, regulated utilities) have established norms against earnouts.
• Sellers willing to take lower headline numbers. Sometimes the trade is explicit: a $9M all-cash deal vs. a $10M-with-$2M-earnout deal. The cash-only deal often produces higher expected value after the earnout payout-rate adjustment.

The negotiating sequence

1. Push to eliminate the earnout entirely. Start with: ‘We’re not interested in earnout structure. We prefer all cash with a price adjustment.’ See what the buyer says.
2. If the buyer holds firm, push to convert to seller note. Seller note is fixed payment over time at a defined interest rate, no contingency. Better than earnout. Often available as a swap.
3. If buyer still holds firm, push for smaller earnout with stronger protections. Reduce the earnout from 25% to 15% of purchase price; strengthen the GAAP definition, operating covenants, audit rights, and metric type.
4. If buyer still holds firm, push for rollover instead of earnout. Rollover gives the seller equity participation in upside without the buyer-discretion manipulation risk of earnout metrics. Better for sellers in most cases.
5. If buyer absolutely requires earnout, optimize the structure. Best metric, shortest duration, sliding-scale, audit rights, operating covenants, GAAP definitions, customer-attrition protection, escrow support.

Buy-side vs. sell-side earnout drafts: how the same clause shifts $500K of value

The same earnout structure can produce materially different economic outcomes depending on which side’s lawyer drafts which provisions. Five specific clauses where draft language shifts hundreds of thousands of dollars of value:

1. Definition of EBITDA

Buyer draft: ‘EBITDA means earnings before interest, taxes, depreciation, and amortization, determined in accordance with GAAP as applied by Buyer.’

Seller draft: ‘EBITDA means earnings before interest, taxes, depreciation, and amortization, determined in accordance with GAAP consistently applied with the accounting policies of the Target Company as of the Closing Date, with no change in accounting estimates, methodologies, or judgments without Seller consent. Overhead allocations from Parent or affiliates shall be limited to the run-rate of allocations to the Target Company in the trailing twelve months prior to Closing. EBITDA shall include all add-backs of one-time, non-recurring, or normalized items consistent with the methodology used to calculate Pre-Closing EBITDA per the Quality of Earnings Report.’

Value at stake: typically 5-15% of EBITDA calculation, translating to 25-75% swing in earnout payout.

2. Operating covenant scope

Buyer draft: ‘Buyer shall operate the Business in good faith.’

Seller draft: ‘Buyer shall: (a) operate the Business in the ordinary course consistent with past practice; (b) maintain marketing and sales investment at no less than 90% of trailing-12-month run-rate; (c) not terminate or transfer any key employee identified in Schedule A without Seller consent; (d) not transfer customers, contracts, or revenue to any affiliate or third party without Seller consent; (e) not implement any pricing change that materially reduces gross margin without Seller consent; (f) maintain working capital at consistent levels with pre-close practice; (g) not change accounting policies or estimates in any way that affects the EBITDA calculation.’

Value at stake: typically 15-30% of earnout outcome. The difference between a generic ‘good faith’ obligation and specific operating covenants is the difference between buyer discretion and seller protection.

3. Audit and dispute mechanics

Buyer draft: ‘Buyer shall provide annual financial statements to Seller. Disputes shall be resolved per Section 11.5 of the Agreement.’

Seller draft: ‘Buyer shall provide unaudited quarterly financial statements within 45 days of quarter-end, audited annual financial statements within 90 days of year-end, and the earnout calculation within 60 days of each measurement-period-end. Seller has the right to: (a) review buyer’s underlying books and records and request additional information; (b) engage an independent accounting firm to audit the earnout calculation at Buyer’s expense if material discrepancies are found; (c) submit disputes to binding determination by an Independent Accounting Firm whose decision is final and not subject to litigation. The Independent Accounting Firm’s determination shall be made within 90 days of submission.’

Value at stake: typically 5-15% of earnout outcome, plus enforceability advantage in disputes.

4. Acceleration on change of control

Buyer draft: silent on change of control or ‘in the event of a change of control of Buyer, the earnout obligation shall continue per the original terms.’

Seller draft: ‘In the event of (a) a sale of the Business to a third party, (b) a sale of more than 50% of Buyer’s equity, or (c) a recapitalization or restructuring of Buyer that materially affects the operation of the Business, the maximum earnout amount shall accelerate and become immediately payable to Seller in cash.’

Value at stake: 30-100% of earnout, depending on probability of change-of-control event during measurement period.

5. Customer attrition allocation

Buyer draft: silent or ‘all revenue declines shall be included in the EBITDA calculation.’

Seller draft: ‘Revenue from any Material Customer (defined as any customer representing more than 2% of trailing-12 revenue at Closing) that terminates or materially reduces purchases due to (a) Buyer-initiated price increases above 5% annually, (b) Buyer-initiated service or product changes, (c) Buyer-affiliate competition, or (d) Buyer breach of customer contract, shall be added back to the EBITDA calculation for earnout purposes.’

Value at stake: 5-25% of earnout, particularly impactful for businesses with customer concentration.

Worked example: $10M deal with $2M earnout at 24 months on EBITDA

This is a canonical LMM earnout scenario. The full economics:

Assumed facts

• Founder owns 100% of OpCo, a $1M trailing-12-month EBITDA business in commercial services.
• Sale to PE-backed strategic acquirer at $10M total consideration: $8M cash at close + $2M earnout payable at month 24.
• Earnout metric: trailing-12-month EBITDA at month 24.
• Earnout structure: sliding-scale from $0 to $2M as EBITDA moves from $1M base to $1.5M target.
• Specifically: $0 if EBITDA at month 24 ≤ $1M; linear payout up to $2M maximum if EBITDA ≥ $1.5M.
• No floor; cliff above $1M baseline; cap at $2M.
• Federal LTCG rate at month 24: 23.8%. Texas seller, no state tax.

Outcome scenarios

Month-24 EBITDA	Earnout earned	After-tax earnout proceeds	Cumulative seller outcome (cash + earnout)
$1.0M (flat)	$0	$0	$6.10M (cash only)
$1.1M (10% growth)	$400K	$305K	$6.40M
$1.25M (25% growth, midpoint)	$1.0M	$762K	$6.86M
$1.5M (50% growth, target)	$2.0M	$1.524M	$7.62M
$1.75M (75% growth, exceeds cap)	$2.0M (capped)	$1.524M	$7.62M

Probability-weighted expected value

The outcome table above is one way to model this specific earnout. As a cross-check against published base rates, the SRS Acquiom 2024 Claims Insights Report found that across all deals with earnouts, payouts average only about 21 cents on the dollar of the maximum, while earnouts that achieve any payout average about half the maximum. This particular structure, with a reachable threshold and meaningful upside, is built to land between those two reference points. Using a midpoint assumption of roughly 40% of the $2M maximum as a planning estimate:

• Expected earnout payout (planning estimate): about 40% of $2M = $800K
• After-tax expected earnout: $800K × (1 − 23.8%) = $610K
• Total expected after-tax: $6.096M (cash) + $610K (earnout EV) = roughly $6.7M

The published cross-deal average (about 21 cents on the dollar) would imply a lower figure still, closer to $6.4M. The point of the range is that earnout dollars should be discounted heavily in any decision, because the base rates say most earnouts underdeliver against their headline maximum.

Counterfactual: $8.5M all-cash deal (buyer-offered alternative)

Often the buyer will offer an alternative: skip the earnout and take a smaller cash-only deal. Suppose the alternative is $8.5M all cash:

• Realized gain: $8.5M – $300K basis = $8.2M
• Federal tax: $8.2M × 23.8% = $1.952M
• After-tax cash: $8.5M – $1.952M = $6.548M

The comparison

• Earnout scenario expected value: $6.80M after-tax
• All-cash alternative: $6.548M after-tax
• Difference: ~$252K in favor of earnout scenario

The earnout produces a higher expected value by about $250K, but with material variance: the worst-case outcome is $6.10M (earnout fails entirely), the best case is $7.62M. The all-cash alternative locks in $6.548M with no variance.

The decision rule

If you have strong conviction in the post-close growth (you believe the EBITDA target is highly probable), take the earnout. If you have uncertainty about post-close operating control or market conditions, take the cash. The risk-adjusted right answer depends on (a) your confidence in the metric being hit, (b) the strength of the operating covenants protecting the metric, (c) your alternative investment opportunities for the earnout deferral period, and (d) your personal liquidity needs.

The structural improvement that shifts the math

If the same earnout is negotiated to (a) revenue-based metric instead of EBITDA, (b) sliding-scale with $500K floor at $1.1M revenue baseline, (c) 24-month annual measurement with year-1 catchup, (d) full operating covenants and audit rights, (e) escrow support, then the expected payout rate improves materially, because a revenue metric and seller-friendly drafting both raise the odds the earnout actually pays:

• Expected earnout payout (planning estimate with seller-friendly structure): about 55% of $2M = $1.1M
• After-tax expected earnout: $1.1M × (1 – 23.8%) = $945K
• Total expected after-tax: $6.096M + $945K = $7.04M

Same headline. Different structure. ~$240K of additional expected value, generated entirely by negotiating the contract language rather than the headline number. This is where the leverage actually sits.

Limitations of this analysis

This report’s benchmark figures are drawn from three named primary studies, each measuring a different deal population over a different time window. They should not be blended into a single number without that caveat:

• Seyfarth Shaw 2025 Middle Market M&A SurveyBook (11th annual, published September 2025): based on 150-plus middle-market private-target acquisition agreements signed in 2024 and the first half of 2025. Reported 13% earnout prevalence.
• ABA 2025 Private Target Mergers & Acquisitions Deal Points Study (published December 2025): based on publicly available definitive acquisition agreements for transactions executed or completed in 2024 and Q1 2025. Reported 18% earnout prevalence.
• SRS Acquiom 2025 M&A Deal Terms Study: based on 2,200-plus private-target acquisitions closed from 2019 through 2024. Reported roughly 22% earnout prevalence for non-life-sciences deals in 2024, a median earnout of about 31% of closing payments, a median 24-month duration, and that 68% of earnout deals use multiple metrics.
• SRS Acquiom 2024 M&A Claims Insights Report: source for the payout figures (about 21 cents on the dollar across all earnout deals, and about half the maximum for earnouts that achieve any payout).

Where this report presents a prevalence-by-deal-size band table, those specific percentages are a CT Acquisitions estimate calibrated to the published study averages and to SRS Acquiom’s finding that earnouts are more common, and proportionally larger, on smaller lower middle market deals. They are labeled as estimates in the table and should be read as directional, not as survey data. The buyer-type prevalence split is likewise a CT Acquisitions estimate based on our own deal pipeline, not a figure from any published study.

The analytical sections of this report (drafting traps, threshold structures, the negotiating sequence, and the worked example) reflect transaction practice and are not dependent on the benchmark percentages. Study definitions, deal populations, and time windows differ, so a reader comparing this report to a single study should match the deal segment and year before drawing conclusions.

Frequently Asked Questions

What percentage of M&A deals include an earnout in 2026?

Published 2025 deal-terms studies put earnout prevalence at 13% (Seyfarth Shaw), 18% (ABA), and about 22% of non-life-sciences deals (SRS Acquiom), with SRS Acquiom noting more than a third of lower middle market buyers use them. Prevalence varies by deal size, and SRS Acquiom finds earnouts are more common and proportionally larger on smaller lower middle market deals (under $25M) than on larger ones. The deal-size band table above gives CT Acquisitions estimates calibrated to these studies. Earnout use spiked in 2023 (closer to 30-37% of non-life-sciences deals per SRS Acquiom) but did not climb further in 2024, settling near the 20-22% range. ABA and Seyfarth, which measure different deal populations, both recorded declines in their 2025 studies.

What is the typical earnout duration?

The most common duration is 24 months (45-55% of earnouts). Next most common is 36 months (25-35%) and 12 months (15-20%). Longer durations (48-60 months) are used in specialized situations like milestone-based deals or healthcare/biotech transactions with regulatory triggers. Shorter durations have materially higher collection rates than longer ones.

What metric is most common in earnouts: revenue or EBITDA?

Revenue. Per the SRS Acquiom 2024 data, revenue was the earnout metric in roughly 62% of earnouts, while pure EBITDA or earnings metrics were used in about 22%. Sellers favor revenue because it is harder for a buyer to manipulate after closing. SRS Acquiom also found that 68% of earnout deals use multiple metrics rather than a single one. If a buyer proposes a pure EBITDA earnout, push back, because EBITDA is the most manipulable metric through overhead allocations, accounting policy changes, and discretionary spending.

What is the average earnout payout as a percentage of the maximum?

Two figures, and they answer different questions. Across all deals with earnouts (excluding life sciences), the SRS Acquiom 2024 M&A Claims Insights Report found earnouts pay only about 21 cents on the dollar of the maximum potential. That average is pulled down by the large share of earnouts that pay zero. For the narrower set of earnouts that achieve any payout at all, about half the maximum dollars are paid. Use the 21-cent figure when you are deciding how much weight to put on earnout dollars in your decision; use the roughly 50% figure to understand what a partial result looks like.

How does payout rate vary by metric type?

Revenue-based earnouts have the highest average payout (55-65% of max). EBITDA-based earnouts are lowest (35-45%). Gross profit sits in between (45-55%). Specific KPI or milestone-based earnouts vary widely (50-70%) depending on the specific milestone’s predictability. The pattern reflects manipulability: harder-to-manipulate metrics produce higher payouts on average.

How does payout rate vary by duration?

Shorter durations have higher payout rates. 12-month earnouts pay out at ~55-65% on average. 24-month earnouts pay at ~40-50%. 36-month earnouts pay at ~30-45%. 48-60 month earnouts pay at ~25-40%. As duration increases, more operational, macro, and buyer-discretion events accumulate, reducing average payout.

What is a typical earnout size as percentage of the deal?

Typical earnout size is 10-25% of total consideration. By deal-size band: $500K-$2M EBITDA deals cluster at 10-20% earnouts; $5M-$25M deals cluster at 15-25%; $25M+ deals can reach 25-30% in aggressive structures. The 2026 trend has been larger earnouts as a percentage of deal value, particularly in healthcare and technology-enabled services.

Should I take a revenue earnout or an EBITDA earnout?

Strongly prefer revenue. Revenue is harder for the buyer to manipulate post-close. If the buyer insists on EBITDA, push for (a) frozen accounting policies as of close, (b) fixed overhead allocation at pre-close run-rate, (c) audit rights at year-end, (d) operating covenants requiring ordinary-course operation, (e) detailed dispute mechanism. The structural protections can lift expected payout by 20-30 percentage points.

How do I negotiate out of an earnout?

Three approaches: (1) push for an all-cash deal at a discounted headline price (the buyer’s earnout-removal alternative is typically 10-20% below the earnout-inclusive headline); (2) convert to rollover equity (rollover gives the seller equity participation in upside without the buyer-discretion manipulation risk of earnout metrics); (3) convert to seller note (fixed payment over time at defined interest, no contingency). The negotiating leverage depends on the competitiveness of your process and the specific buyer’s earnout rationale.

What is the implied covenant of good faith and why does it matter?

Delaware and most state law imply a covenant of good faith in earnout agreements, requiring the buyer to operate the business without intentionally suppressing the earnout metric (see Lazard Technology Partners v. Qinetiq, Del. Supr. 2015). Buyers sometimes try to disclaim this covenant via explicit contract language. Sellers should resist disclaimers and ideally add explicit good-faith language plus prohibitions on actions taken with the purpose of suppressing the earnout.

What happens to the earnout if the buyer sells the company?

Depends entirely on the contract. The seller’s protection is an acceleration clause: if the buyer sells the business, sells more than 50% of buyer’s equity, or otherwise undergoes a change of control during the earnout period, the maximum earnout becomes immediately payable. Without this clause, the seller is exposed to a new owner who has no commercial relationship with the seller and no operational incentive to deliver the earnout outcome.

Do I need audit rights on the earnout calculation?

Yes. Without audit rights, the seller is dependent on buyer-supplied financial statements with no independent verification mechanism. Standard practice: explicit audit rights at year-end (seller’s accountant or a mutually-agreed independent accountant), buyer pays audit costs if material discrepancies are found, dispute resolution via accounting expert determination rather than litigation. Audit rights are one of the highest-leverage protections and rarely refused if seller counsel is competent.

Authoritative deal-data sources informing this analysis:

• GF Data, Lower middle market M&A transaction data (quarterly reports)
• BizBuySell Insight Report, Quarterly small-business transaction data
• Peak Business Valuation, Industry-specific multiples research
• BMI Mergers & Acquisitions, Lower middle market deal commentary
• PitchBook, Private market data and deal records
• Capstone Partners, Sector-specific M&A updates

Benchmark ranges in this report reflect CT Acquisitions' synthesis of these data sources plus our proprietary buyer-network insights from 76+ active U.S. lower middle market acquirers. Individual deal terms vary; consult a qualified M&A advisor.

Sources & References

• Seyfarth Shaw, 2025 Middle Market M&A SurveyBook (11th annual, published September 24, 2025). Earnout prevalence in middle-market private-target deals signed 2024 and H1 2025. seyfarth.com
• American Bar Association, 2025 Private Target Mergers & Acquisitions Deal Points Study (published December 2025). Earnout prevalence in private-target deals executed or closed in 2024 and Q1 2025. americanbar.org
• SRS Acquiom, 2025 M&A Deal Terms Study. Earnout prevalence, duration, metric mix, and sizing across 2,200-plus private-target deals, 2019 through 2024. srsacquiom.com
• SRS Acquiom, 2024 M&A Claims Insights Report. Earnout payout rates (about 21 cents on the dollar across all earnout deals; about half the maximum for earnouts achieving any payout). srsacquiom.com
• SRS Acquiom, lower middle market M&A commentary. “More than a third of lower middle market buyers” use earnouts; smaller deals carry proportionally larger earnouts. srsacquiom.com

Last verified against primary sources: May 2026. The prevalence-by-deal-size table and buyer-type split in this report are CT Acquisitions estimates calibrated to the studies above, and are labeled as such in the body.