Developed and maintained by ProWorkstack · Development and review process
Calculate a user-verified fixed and daily late-fee schedule with a grace period and fee cap.
Your results
Enter your inputs and select Calculate.
How this calculator works
Chargeable days = max(elapsed late days − grace days, 0). If chargeable days are positive, fee = min(fixed fee + chargeable days × daily fee, entered cap); otherwise fee = 0. Total = outstanding original unpaid amount + fee.Worked example
Twelve late days less five grace days gives seven chargeable days. A fixed fee of 20 plus seven days at 5 equals 55, below the entered cap of 60. On a 500 balance, the scenario total is 555.Assumptions
Defaults are illustrative. Replace them with your own measured quantities and documented assumptions. Use matching periods and a consistent currency wherever monetary amounts are entered.Interpreting your results
All fees and timing rules must already be verified as lawful and contractually applicable. This does not determine legal limits, compounding, notices or enforceability. It applies no interest to original unpaid amount.Calculation formulas
- days
MAX(late-grace,0)- fee
IF(days>0,MIN(fixed+days*daily,cap),0)- Estimated late fee
fee- Unpaid balance plus late fee
balance+fee- Late days after the grace period
days
Frequently asked questions
What should I check before using the result?
Use the signed agreement and applicable rules to establish the grace period, fixed fee, daily fee and cap. Zero is a valid fee assumption when charges are not allowed or have been waived.
Does this tool connect to my records?
No. This is a local calculation from the figures you enter. It does not scan accounts, import private records or verify legal, regulatory or exam requirements.
Maintained by ProWorkstack · Last reviewed: 2026-10-04 · Development and review process