Earnout structures in SaaS private equity exits.

What an earnout actually does

An earnout in a B2B SaaS exit is contingent consideration: a portion of the sale price paid to the seller after closing, conditional on the company hitting agreed performance milestones. Earnouts bridge valuation gaps. The seller believes the company is worth more than the buyer is willing to pay today; the buyer hedges that belief through contingent payment over time. In the right structure, both parties end up at a fair price - the seller captures the upside if the thesis plays out, the buyer is protected if it doesn’t.

Common earnout structures in SaaS exits

ARR-target earnouts

The most common structure. Payouts trigger when the company hits agreed ARR milestones - typically tiered, e.g., €1M of earnout at €10M ARR, €2M more at €12M ARR, €3M more at €15M ARR - within defined measurement windows (usually 12, 24, and 36 months post-close). Pros: simple, easy to audit. Cons: can incentivise pulling forward revenue at the cost of margin.

NRR-based earnouts

Payouts trigger when Net Revenue Retention exceeds thresholds (115%, 120%, 125%) over rolling 12-month periods. Increasingly common in transactions where retention durability is the central thesis. Pros: aligns with long-term value creation. Cons: harder to audit; subject to definitional disputes.

EBITDA-based earnouts

Payouts tied to EBITDA targets, common in profitable SaaS exits. Pros: aligns with cash returns. Cons: easily gamed through accounting choices and operating decisions; almost always requires extensive negotiated definitions and audit rights.

Mixed structures

Increasingly common: an earnout that requires both an ARR threshold and an NRR threshold to trigger, or a tiered structure with different metrics at different ARR levels. The mixed approach hedges against gaming individual metrics.

Typical earnout sizes and timing

Earnouts in growth-equity and buy-out PE exits typically represent 10–30% of total enterprise value, paid over 18–36 months post-close. Earnout size correlates closely with how PE firms value SaaS at the time of the transaction. The pattern by transaction type:

• Strategic acquisitions of growth-stage SaaS: 15–25% earnout, 24-month measurement, ARR-based
• Buy-out PE acquisitions of mature SaaS: 10–20% earnout, 36-month measurement, often EBITDA-based
• Smaller / minority transactions: 5–15% earnout, often performance-based on a single milestone
• High-uncertainty / contested-thesis deals: 30–50% earnout, longer measurement, mixed metrics

What founders should negotiate hard

Definition of metrics

"ARR" is not a single thing. It can be billed ARR, recognised ARR, contracted ARR, or some negotiated definition. Each definition produces different numbers under the same operating reality. Define the metric in the agreement, with worked examples, and require audit by a named third party.

Buyer-controlled actions

The single most common earnout failure pattern is the buyer making post-close decisions that depress earnout outcomes - cutting the sales team to manage cost, repricing products, redirecting roadmap, slowing new-logo acquisition. Negotiate explicit protections: caps on layoffs in the earnout period, limits on pricing changes, and a "good-faith" operating standard with measurable benchmarks.

Catch-up and acceleration

If the company exceeds the earnout target early, the buyer should not be able to wait out the measurement window to avoid full payment. Catch-up clauses ensure that beating one milestone earlier triggers proportional acceleration. Acceleration on change-of-control is also standard and should be in the agreement.

Reasonable windows

Quarterly earnout measurements are tempting (more granular, more chances to hit) but expose the founder to single-quarter operational hiccups that can blow up the structure. Annual or rolling-12-month measurements are usually fairer.

Caps on impairment

The agreement should explicitly prevent the buyer from operating the company in a way that materially impairs earnout outcomes (e.g., shifting customers to a sister entity, changing product pricing without justification). The standard formulation: "the Buyer shall operate the Company in good faith and consistent with past practice during the Earnout Period."

How operator-led capital changes the earnout conversation

When TGC partners with a B2B SaaS company, the operating capacity we deploy directly influences the metrics that drive earnouts. Embedded engineering teams ship the product features that drive expansion. GTM operators run the cadence that improves NRR. Governance specialists harden the financial-reporting infrastructure that prevents earnout disputes.

The result: founders working with TGC who later sell to a strategic acquirer or PE firm are often able to negotiate larger earnouts on better terms, because the operating capacity that drove the pre-exit ARR trajectory provides credibility for the post-close ARR trajectory. We track earnout precedent in the SaaS PE space partly for this reason - to calibrate where deployed operating capacity translates most directly into measurable seller value at exit.

Frequently asked questions

What is an earnout in a SaaS private equity exit?

An earnout is a contingent portion of the sale price paid to the seller (typically the founder and management team) based on the company hitting agreed performance milestones after closing. In B2B SaaS exits, earnouts commonly tie to ARR growth, NRR, or EBITDA targets over 12–36 months post-close. Earnouts bridge valuation gaps between buyer and seller - the seller believes future performance justifies a higher price; the buyer hedges that belief through contingent consideration.

How are earnouts typically structured in B2B SaaS deals?

Most B2B SaaS earnouts use one of three structures: (1) ARR-target earnouts - payouts trigger when the company hits ARR milestones (e.g., €10M, €15M, €20M) within defined windows; (2) NRR-based earnouts - payouts trigger when NRR exceeds thresholds (e.g., 115%, 120%) over rolling 12-month periods; (3) EBITDA-based earnouts - payouts tied to EBITDA targets, more common in profitable SaaS exits. Mixed structures combining ARR + retention are increasingly common.

What earnout sizes are typical in SaaS PE exits?

Earnouts in growth-equity and buy-out PE exits typically represent 10–30% of total enterprise value, paid over 18–36 months post-close. Smaller earnouts (5–10%) are used to bridge minor valuation gaps; larger earnouts (30–50%) appear in higher-risk transactions or when the buyer wants strong ongoing alignment from the founder. Earnouts above 40% of EV are rare and typically signal either disagreement on valuation or significant uncertainty about post-close performance.

What should founders negotiate in earnout terms?

Six points matter most: (1) clear, measurable, audited metrics - ambiguity destroys earnouts; (2) protection against buyer-controlled actions that would reduce earnout achievement (e.g., headcount cuts, pricing changes); (3) catch-up and acceleration provisions if targets are exceeded early or in a single period; (4) reasonable measurement windows - too short means missing one quarter kills the earnout; (5) clear definitions of ARR / EBITDA / retention to prevent post-close disputes; (6) a cap on the buyer’s ability to force operational changes that would impair earnout outcomes.

Why does TGC track earnout structures in SaaS PE exits?

Earnout precedent is one of the most useful diligence inputs for valuing operating-capacity contributions. When earnouts cluster around 12-month ARR targets, it tells us how much value the buyer ascribes to the next-year revenue trajectory - which is exactly what TGC’s embedded operating teams influence. Tracking earnout structures helps us calibrate where deployed operating capacity adds the most measurable value at exit.

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