Late Fee & Interest Calculator
Work out the interest and late fee on an overdue invoice.
Interest
₹1,479.45
Total penalty
₹1,479.45
Total now due
₹1,01,479.45
Interest is a simple daily charge: amount × rate ÷ 365 × days overdue. This is an estimate for agreed/contractual late fees — it is not legal advice, and statutory rates (e.g. under the MSMED Act) may differ.
When to use it
- Chasing a client who has missed the due date
- Adding a fair, agreed late fee to a reminder
- Estimating interest owed on an overdue bill
Why use this tool
- Configurable annual interest rate (defaults to a common 18%)
- Add an optional flat late fee on top
- Plain-language result you can paste into a reminder
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