Mortgage calculator A clearer plan.

Monthly payment = P × r ÷ [1 − (1 + r)⁻ⁿ]. P is your loan, r is annual reducing rate ÷ 1200, n is tenure in months. At 0%, payment = P ÷ n.

Interest = opening balance × r. Principal = payment − interest. Extra principal is applied after each regular payment. The instalment stays the same and the tenure shortens.

Amounts round to sen each month; the final payment clears rounding differences. First payment after one month, constant rate throughout. Total repayment excludes down payment. Fees, insurance, taxes, and bank-specific daily-rest calculations are excluded. Confirm that your lender applies extra payments to principal without charges.

References checked 25 October 2026. Rates and tenure eligibility depend on your lender. These are examples, not a bank offer.