Calculators

Amortisation table

See how each year’s repayments split between interest and principal, and the balance left at the end of every year.

Monthly repayment—

A fully amortising instalment at one rate for the whole tenure.

Total interest—
Interest in year 1—
Balance halves in—
Total repaid—
How this estimate works

Each month, interest is the balance × annual rate ÷ 12 and the rest of the instalment repays principal. Rows show each year’s totals and the balance after its last payment. Real packages change rate after the lock-in period.

Official references: MoneySense LTV and minimum cash. Rules checked 3 November 2026.

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