Loan & savings interest calculator
Check monthly repayments and the interest you will receive at maturity.
For reference only Actual product terms, preferential rates, early withdrawal and fees are not included.
Calculation inputs
Inputs and results are never stored or transmitted. The country is remembered in this browser only when you choose it.
Calculation result
Enter your inputs and select Calculate.
Monthly repayment schedule
| Month | Payment | Principal | Interest | Balance |
|---|
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Basis and sources of the tax rates used
Calculation and rounding rules
- The monthly rate is the annual rate divided by 12. Monthly interest is rounded half up to the currency's minor unit (1 for won and yen, 0.01 for dollars, euros and pounds).
- Equal total payments are calculated over the term remaining after grace and rounded to the minor unit. Regular equal principal amounts are rounded down to the minor unit. All remaining principal is settled in the final month, so the final payment may differ.
- Deposits are paid once at the start; installment contributions are paid at the start of each month. Simple interest applies to cumulative contributions; monthly compounding applies to principal plus prior interest.
- Tax is applied to total gross interest at maturity (after any allowance) at the selected rate and rounded down to the minor unit. The maturity amount is contributed principal plus after-tax interest.
- Calculations use months rather than days. Results exceeding the safe integer limit are stopped with a request to reduce inputs.