Late Payment Penalty
Calculator
Results
- Rate-based charge
- 240
- Total penalty
- 280
- Amount due
- 4,280
- Penalty as a share of the invoice (%)
- 7
Legal and admin results
| Rate-based charge | 240 |
| Total penalty | 280 |
| Amount due | 4,280 |
| Penalty as a share of the invoice (%) | 7 |
formula-map diagram
- Rate-based charge
- 240
- Total penalty
- 280
- Amount due
- 4,280
- Penalty as a share of the invoice (%)
- 7
Legal and admin relationship
Formula
Penalty = fixed + invoice × rate% × periods late= 240
Note
This is NOT legal advice and NOT a statement of any law. It is generic arithmetic: it applies the displayed formula to the figures you entered, and every rate, fraction, factor, cap and threshold shown is a value YOU supply, not a statutory or court-approved figure. No jurisdiction's rule is built in. Real entitlements, fees, interest, support amounts and deadlines depend entirely on the jurisdiction, the wording of the contract, the day-count and rounding conventions the court applies, and the facts of the case. Use these figures only as a rough arithmetic check and consult a qualified lawyer in the relevant jurisdiction before relying on any number.
More in Legal and admin
See all →Frequently asked questions
How is a late payment penalty typically calculated?+
Most penalties are either a flat fee, a percentage of the overdue amount, or a daily/monthly interest rate applied until payment is made. The calculator uses the method and rate you specify, so confirm which one applies under your contract or local law.
Is there a legal maximum on late payment penalties?+
Many jurisdictions cap penalty interest rates to prevent them from functioning as disguised usury, and consumer contracts often have stricter limits than business-to-business ones. This is general information, not legal advice — verify the applicable cap for your contract type and location.
Does the penalty compound if the payment stays overdue for months?+
This depends on the terms: some penalties are a one-time flat charge, others accrue daily simple interest, and a few compound monthly. Enter the correct accrual method to avoid significantly over- or under-stating what's owed.
Can penalty and interest both be charged on the same late payment?+
In many jurisdictions a single overdue amount cannot be charged both a punitive penalty and ordinary interest without limit — courts sometimes view stacking both as an unenforceable penalty rather than genuine compensation. Check the enforceability of your specific clause with a professional if the amount is significant.
What if the contract doesn't specify a late payment penalty at all?+
Without a contract clause, many jurisdictions still allow statutory interest on overdue commercial invoices by default. If nothing applies, you generally cannot charge a penalty simply because payment is late — check your local commercial payment rules.