Loan calculator

A loan of 20,000 at 7% a year for 5 years has a monthly payment of 396.02 and total interest of 3,761.44. It can also calculate how much you can borrow for a given monthly payment.

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%

Please enter the rate in your loan offer or agreement. This tool does not suggest a rate.

years
Term in

Result

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How it is calculated

  1. Monthly rate r = annual rate ÷ 12. Number of payments n = term in months.
  2. Monthly payment = loan amount × r × (1 + r)^n ÷ ((1 + r)^n − 1). If the rate is 0, monthly payment = loan amount ÷ n.
  3. Amount you can borrow = monthly payment × (1 − (1 + r)^−n) ÷ r.
  4. Each month, interest = balance at the end of the previous month × r. The rest of the payment repays the principal.
  5. Total interest = monthly payment × n − loan amount. All values are calculated exactly and shown to two decimal places.
  6. Local rules for home loans (such as rate setting, down payments and charges) are not included. Where this site has a calculator for your region, it is listed under “Related calculators” below.
  7. All calculations are done in your browser. The details you enter are not sent to any server.

Worked examples

7% a year for 5 years

Details
Loan amount NT$20,000.00; rate 7% a year; term 5 years
Result
Monthly payment NT$396.02; total interest NT$3,761.44

4.5% a year for 10 years

Details
Loan amount NT$100,000.00; rate 4.5% a year; term 10 years
Result
Monthly payment NT$1,036.38; total interest NT$24,366.09

6.5% a year for 30 years

Details
Loan amount NT$300,000.00; rate 6.5% a year; term 30 years
Result
Monthly payment NT$1,896.20; total interest NT$382,633.47

Amount you can borrow for a given monthly payment

Details
Monthly payment NT$500.00; rate 6% a year; term 5 years
Result
Amount you can borrow NT$25,862.78; total interest NT$4,137.22