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Cash flow · Free · No sign-up
Simple invoice interest
Calculate non-compounding interest on an overdue invoice.
Try your numbers
Currency selection changes the display, not the amounts. Use one currency throughout unless you are using the conversion tool.
Your result
How this works
Calculate non-compounding interest on an overdue invoice.
Formula
Interest = overdue amount × annual rate × days ÷ 365.
Assumptions and limits
Arithmetic only. Whether interest can be charged depends on your agreement and applicable rules. No compounding.
Worked example
Replace the example with your own figures, then compare scenarios. Include all relevant costs and use records from matching periods.