Mortgage Repayment Calculator (2025)

Calculate your home loan repayments, total interest, and amortization schedule by rate, term and frequency.

Formula: P = L[c(1 + c)^n]/[(1 + c)^n - 1]

Input Values

The total principal amount borrowed

Annual interest rate as a percentage

Length of the loan in years

How often payments are made

Results

Repayment Amount

$0.00

Total Interest

$0.00

Total Repayment

$0.00

Number of Payments

0.00

Chart Period

Frequently Asked Questions

The calculator uses the standard amortization formula: P = L[c(1 + c)^n]/[(1 + c)^n - 1], where P is the repayment, L is the loan amount, c is the periodic interest rate, and n is the number of payments.

Weekly payments (52 per year) and fortnightly payments (26 per year) can reduce the total interest paid compared to monthly payments (12 per year) because you're paying more frequently, reducing the principal balance faster.

No, this calculator only shows the principal and interest payments. Additional costs like property taxes, insurance, and mortgage insurance are not included in the calculation.

An amortization schedule shows how each repayment is split between interest and principal over time, and how your balance declines.

This calculator is designed for fixed-rate mortgages. For adjustable-rate mortgages (ARMs), the calculations would be more complex as the interest rate can change over time.

The calculations use standard formulas and are accurate for fixed-rate home loans. Real outcomes may vary due to rounding and lender policies.

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