Breach of Contract Liquidated Damages Cap Calculator

Calculate your liquidated damages clause amount, test enforceability against the Restatement (Second) of Contracts §356 reasonableness standard, and see the likely cap vs actual damages position.

Best estimate of real financial harm from the breach
LD as a percentage of total contract value
Liquidated Damages Amount
LD as % of Contract
Actual Damages Est.
LD vs Actual Damages Ratio
Enforceability Signal
Penalty Risk
Jurisdiction
Ad Space

What Are Liquidated Damages in a Contract?

Liquidated damages (LD) are a pre-agreed amount specified in a contract that one party must pay if they breach. Courts enforce LD clauses when two conditions are met: (1) actual damages from a breach were genuinely uncertain or difficult to estimate at the time of contracting, and (2) the agreed amount represents a reasonable estimate of that anticipated harm — not a punishment designed to deter breach. If a LD clause fails either test, a court will void it as an unenforceable "penalty clause" and limit recovery to proven actual damages. Source: Restatement (Second) of Contracts §356; UCC §2-718. Last updated: May 2026.

Enforceability: The Two-Part Reasonableness Test

Test ProngWhat Courts Look ForRed Flag (Penalty)
Uncertain damagesActual harm was hard to quantify at contractingDamages were easily calculable — LD unnecessary
Reasonable estimateLD proportionate to anticipated harm (typically <50% of contract value)LD is grossly excessive vs any plausible actual harm

When LD Clauses Are Voided and What Happens Next

If a court voids a LD clause as an unenforceable penalty, the non-breaching party must fall back on proving actual damages — which can be difficult, expensive, and uncertain. This is why both parties benefit from a well-drafted, reasonable LD clause: the non-breaching party gets certainty of recovery; the breaching party gets a capped exposure. Courts in most U.S. jurisdictions apply the "prospective" test — evaluating reasonableness at the time of contracting, not based on what actual damages turned out to be. Courts do not re-write LD clauses; they either enforce them fully or void them entirely. California applies stricter consumer-contract LD rules under Civil Code §1671(b) — all LD clauses in consumer contracts must be reasonable or they are void. Always consult a licensed attorney before relying on any LD clause.