Loan repayment calculator

Work out repayments on a mortgage or business loan, see the effect of interest rate changes, and how extra payments shorten your loan.

Loan

Interest rate changes (optional)

Additional payments (optional)

Monthly repayment
$0
Repayments after rate changes
Total interest
Total repaid
Loan paid off in
Interest saved by additional payments
Time saved by additional payments

When the interest rate changes, the regular repayment is recalculated over the remaining term, as most New Zealand lenders do. Additional payments are applied to the balance and shorten the loan; your regular repayment stays the same. Your lender's figures may differ slightly because of rounding and payment dates.

Important: This calculator gives general estimates only. It is not tax, financial, lending or legal advice, and using it does not create a client relationship with Yugraj Singh Mahil Chartered Accountants Limited. Rates, thresholds and rules reflect the 2026–27 tax year and were last reviewed on 18 October 2026. They can change at any time, and the results may not reflect your circumstances. Please confirm current rates with Inland Revenue, ACC or your lender, and get advice before making decisions. To the extent permitted by law, we accept no liability for any loss arising from use of or reliance on this calculator. Questions? Call 021 0234 6659 or email ysm@yugrajca.co.nz.

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