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Penalty Clause Cost Calculator

Work out penalty clause cost instantly with clear inputs, formula shown and shareable results.

About Penalty Clause Cost Calculator

Delay penalties accrue at a stated rate per week against contract value and stop at a contractual cap. Knowing exactly when the cap bites matters commercially: beyond it the contractor has no financial incentive to accelerate, so the remedy must shift to termination or step-in rights.

Formulas

Uncapped penalty

Penalty = Contract value x Rate per week x Weeks late

Payable

Payable = min(Uncapped penalty, Contract value x Cap %)

Worked example

With the default values below, Penalty Clause Cost Calculator returns Penalty payable of $120,000.00. Change any input above and every figure here is recalculated in your browser.

Inputs used

Contract value
4,000,000
Penalty rate per week of delay
0.5
Weeks of delay
6
Cap on total penalty
5

Results

Penalty payable
$120,000.00
Penalty before the cap
$120,000.00
Contractual cap
$200,000.00
Cap status
Within cap

Step by step

  1. 1Values used
  2. 2Uncapped penalty
  3. 3Payable
  4. 4Penalty payable= 120,000.00
  5. 5Penalty before the cap= 120,000.00
  6. 6Contractual cap= 200,000.00
  7. 7Cap status= Within cap

Assumptions and limits

  • The result is derived only from the 4 inputs listed above. Anything not among them is not part of the calculation.
  • In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
  • Figures are rounded for display to 2 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.
  • Indicative estimate. Enforceability, extension-of-time entitlement and interaction with general damages depend on the contract and governing law. Not legal advice.
  • This is an estimate for general information and not professional financial, tax or legal advice. See the full disclaimer for the limits that apply to this kind of calculator.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Indicative estimate. Enforceability, extension-of-time entitlement and interaction with general damages depend on the contract and governing law. Not legal advice.

Frequently Asked Questions

Are penalty clauses enforceable?

In many common-law jurisdictions a clause that is a genuine pre-estimate of loss (liquidated damages) is enforceable, while a punitive penalty may not be. Drafting matters.

Do extensions of time reduce the penalty?

Yes. Granted extensions move the contractual completion date, so excusable delay weeks are removed before the calculation.

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Penalty Clause Cost Calculator – Calculate Penalty payable