Amortisation calculator
See how a loan is paid off year by year, with the interest, principal and balance left.
About this calculator
Early payments on a loan are mostly interest, and later payments are mostly the money you borrowed. This calculator shows that split for every year of the term, so you can see how quickly the balance falls.
It assumes a fixed rate and equal monthly payments.
Common questions
What does amortisation mean?
It is paying off a loan gradually with regular payments that cover both interest and part of the amount you borrowed.
Why is the balance slow to drop at first?
Interest is charged on what you still owe, so at the start more of each payment goes to interest.
More free calculators
Salary calculator
UK take-home pay with tax code, student loan, pension and more.
Income tax calculator
UK income tax and National Insurance for 2026/27.
Mortgage calculator
Monthly payment, total interest and loan to value.
Loan calculator
Monthly payment and total interest on any loan.
Car loan calculator
Monthly payment for a car, with deposit.
Interest rate calculator
Find the interest rate from a loan and payment.