About the Partial Payment Calculator
Remaining balance due after one or more partial payments on an invoice, and the percentage paid.
Also known as: balance due calculator, remaining balance, installment payments, balance-due.
How to use this calculator
- Enter invoice total, payments made.
- The result updates instantly as you type — press Calculate (or Enter) at any time.
- Review the breakdown shown under the main result.
- Use Copy result or Share to save the answer or send a link with your inputs.
Formula
Balance = total − Σ payments
Worked example
Using the values pre-filled in the calculator above:
- Invoice total = 8,400
- Payments made: 2000, 1500
the calculator returns:
- Balance due: 4,900
- Paid so far: 3,500
- Paid: 41.67%