Liquidated Damages Calculator

Rate, Period and Cap

This liquidated damages calculator multiplies each contractual rate by its counted units, then applies one optional cap to the combined sum.

Choose a daily or weekly rate. Enter counted days or weeks directly, or select dates to count calendar days. A week contains seven calendar days.

Date ranges always include the start. Choose whether the end counts. The same start and end count as zero days when excluded, or one day when included.

Calendar counting includes weekends and public holidays. If the contract excludes days or allows extensions of time, enter the adjusted counted units yourself and record the basis.

Prorate retains a partial day or week. Round up counts a started unit in full. Round down counts completed units only. Apply the convention required by the contract.

A global cap limits the combined amount once. An empty cap applies no limit, while an entered zero cap reduces the sum to zero. This worksheet does not model separate caps for each segment.

Check a Worked Contract Scenario

In a fictional contract, a daily rate of $500 over 20 counted days gives an uncapped $10,000. An $8,000 cap limits the displayed sum to $8,000.

For a weekly example, $700 over 10 calendar days gives 1.43 weeks on screen. Prorating uses the full 10 ÷ 7 internally and produces $1,000.

Rounding that period up produces two weeks and $1,400. Rounding down gives one week and $700. Use separate segments when the rate or counting convention changes.

The arithmetic does not decide breach, the triggering event or entitlement. Contract interpretation and any extensions of time determine which rate and period belong in the calculation.

In Paciocco v ANZ, the High Court assessed the interests protected by the clause beyond directly incurred expenses. Actual loss alone does not decide whether a clause is a penalty.

Andrews v ANZ confirms that the penalties doctrine can apply beyond a breach of contract. Calling an amount liquidated damages does not establish enforceability.

Expectation damages concern the loss from non-performance. A specified-rate calculation can produce a different amount because it applies the entered contractual mechanism.

Export the Calculation Assumptions

Your entries stay in this tab and clear on reload.

The CSV keeps each segment’s rate beside its period basis, raw units and counted units. It also records the date boundaries, partial-period convention and your source note.

Add a segment for each rate change. When dates are used, avoid overlapping counted days at the boundary unless the contract requires them. The calculator adds every segment independently.

Each segment amount rounds to cents before the amounts are added. The cap applies to that sum. Headline totals show whole dollars, while the export retains each exact cent amount.

Review the schedule below against the clause and the period evidence before attaching the CSV to a matter file. Dates in the export use ISO format.

The worksheet accepts up to 20 segments, rates up to $1 million per unit and up to 1 million entered units per segment. A global cap can be up to $1 trillion.