Late-delivery penalty calculator
Interactive engineering and procurement calculator. Instant client-side computation with no sign-up.
Contract & dates
Deduction breakdown
Days late
2026-07-20 → 2026-08-01
Penalty by days
0.5% × 12 days of order value
Cap at contract %
Max 10% of order value
Deduction to apply
Below the cap — daily rate binds
Final payment due to supplier
$42,000
$45,000 retained − $3,000 penalty = $42,000
Sending the notice
Copy the "Deduction to apply" and "Final payment due" lines into a short email to the supplier: state the promised and actual delivery dates, the contract clause you're applying, and the amount withheld from the final payment. Keep the tone factual — the numbers do the talking.
Days are calendar days between the two dates. If your contract counts working days or excludes the day of delivery, adjust accordingly before relying on the figure. This tool is an aid, not legal advice — check the actual penalty clause in your contract.