Liquidated Damages Delay Exposure Calculator
Liquidated damages turn a late machine into a fixed number the buyer can deduct from your final payment. This calculator shows what a given delay costs under a weekly rate, a grace period and a cap, and how much margin remains.
Your numbers
Common drafting is 0.5 percent per week, but read your own clause.
Many contracts cap total LDs at 5 to 10 percent.
Your results
Illustration of a typical weekly-rate-with-cap clause. Actual clauses differ on notice, partial delivery, excusable delay and exclusive remedy. Have counsel review your contract.
Margin after LDs vs delay
Sweeps Expected delay against the contract date from 0 to 40, holding your other inputs fixed.
Project schedule risk dashboard
Optional: ask how milestone data in your ERP could flag LD exposure early.
Optional. The tool and every export work without this. No spam.
How to use it
Enter the contract value and the three clause parameters: the percentage per week, the grace period before the clock starts, and the cap as a percentage of contract value. Then move the delay slider to the slip you expect against the contractual delivery or completion date. The tool subtracts the grace period, multiplies by the weekly rate, applies the cap, and compares the result with your planned gross margin. Use it during bid review to see how much schedule risk a clause really carries and during execution to decide whether paying for overtime or air freight is cheaper than the penalty.
The formula
Chargeable weeks equal delay minus grace, never below zero. Uncapped LDs equal contract value times the weekly rate times chargeable weeks. Payable LDs are the smaller of that figure and the cap. Weeks to the cap equal the cap percentage divided by the weekly rate, so a 10 percent cap at 0.5 percent per week is reached after 20 chargeable weeks. Many clauses charge per day or apply only to the value of the delayed portion rather than the whole contract; adjust the contract value input to the base your clause actually names.
- Check whether the base is total price or only the late item.
- Check whether the clause says sole remedy for delay.
- Check how partial weeks are rounded.
Reading the chart
The LD line rises linearly and then flattens at the cap, while margin after LDs falls and then bottoms out. The distance between the planned margin and the flat part shows the worst case. If the worst case still leaves positive margin, delay is painful but survivable. If the cap exceeds your margin, a long slip turns the project into a loss, and you should price that risk or negotiate the cap. The flat part also matters for decisions: beyond the cap, further delay costs you no more in LDs, but it may still trigger termination rights.
Common mistakes
People often forget that LDs sit on top of other costs of delay such as extra site supervision, storage and idle crews, which the clause does not cover. They also assume the cap protects them from termination, which it does not. Finally, many teams compare LDs with the total contract profit rather than the profit remaining after the costs already incurred. Track the delay as a milestone in your ERP project so the exposure is visible to finance every week.
Frequently Asked Questions
What is the difference between liquidated damages and a penalty?
Liquidated damages are a pre-agreed estimate of the buyer's loss from delay and are generally enforceable if reasonable. A penalty is designed to punish and may be unenforceable in many jurisdictions. Enforceability depends on local law, so take legal advice.
Does the grace period count toward the cap?
Normally not. The grace period just delays the start of the clock, so chargeable weeks begin after it ends. Always confirm in the actual wording, because some contracts apply LDs from the first day and use the grace period only as a notice window.
Can customer caused delay reduce the LDs?
Usually yes. Late drawings approval, missing site readiness or changed scope can extend the contractual date if you claim in time and follow the notice procedure. Keep dated records and file the claim promptly.
Should I price LD risk into the quote?
If the clause is harsher than your standard terms, yes. A common approach is to add a contingency based on the probability of slip times the expected LD, or to negotiate a lower cap and longer grace period.
We can connect your project milestones in the ERP to a read-only dashboard that warns when forecast delivery crosses into LD territory.
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