Annuity Mortgage Calculator
Fixed monthly payments. See your full amortisation schedule and interest/principal split.
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Frequently asked questions
What is an annuity mortgage?
An annuity mortgage has a fixed monthly payment throughout the entire loan term. Each payment covers both interest and a portion of the principal. Early on, most of your payment goes toward interest; by the end, most goes toward principal.
How is the monthly payment calculated?
The formula is: Payment = P × [r(1+r)ⁿ] / [(1+r)ⁿ − 1], where P = loan principal, r = monthly interest rate (annual rate ÷ 12), and n = total number of monthly payments.
What's the difference between annuity and linear mortgages?
With an annuity mortgage the monthly payment stays the same — predictable budgeting. With a linear mortgage you repay a fixed chunk of principal each month so the payment decreases over time, and you pay less total interest. See our Annuity vs Linear comparison tool for a side-by-side analysis.
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