Estimate monthly mortgage repayments
Use the Mortgage Repayment Calculator to compare repayments, interest, and overpayment scenarios.
Quick answer
- A repayment schedule shows how each monthly payment is split between interest and capital.
- Early payments usually contain more interest because the outstanding balance is high.
- Later payments usually reduce the balance faster.
- A schedule helps users understand total interest and overpayment impact.
On this page
What a repayment schedule shows
A mortgage repayment schedule, sometimes called an amortisation schedule, breaks a mortgage into monthly rows. Each row usually shows the opening balance, interest charged, capital repaid, total monthly payment and closing balance.
Why the balance falls slowly at the start
At the start of a mortgage, the loan balance is highest. Because interest is calculated on the outstanding balance, the interest part of each payment is usually larger in the early years. As the balance reduces, the interest part falls and the capital repayment part rises.
Example first-year schedule view
| Month | Payment | Interest | Capital | Approx. balance |
|---|---|---|---|---|
| 1 | €1,432 | €1,000 | €432 | €299,568 |
| 2 | €1,432 | €999 | €433 | €299,135 |
| 3 | €1,432 | €997 | €435 | €298,700 |
| 12 | €1,432 | €984 | €448 | €294,740 |
Example based on €300,000 over 30 years at 4.00%. Figures are rounded.
Why this matters for overpayments
Overpayments can be powerful because they reduce the outstanding balance. A lower balance means less interest is charged in future months. This is why extra repayments made earlier in the term can often save more interest than the same payment made much later.
Frequently asked questions
Is a repayment schedule the same as a mortgage statement?
No. A repayment schedule is a projection. Your lender statement is the official record of actual balance and payments.
Why does my balance reduce slowly at first?
Because a larger share of early payments goes toward interest while the balance is high.
Can interest rate changes affect the schedule?
Yes. Variable rates or new fixed rates can change future repayments and the schedule.
Can I use a schedule to plan overpayments?
Yes. It helps show how extra repayments reduce the balance and future interest.
Does every mortgage have the same schedule?
No. The schedule depends on loan amount, rate, term, payment frequency and lender method.
Is this guide tax advice?
No. It is general information for planning. Use official guidance or a tax adviser for your own situation.
Can I use the calculator for filing?
Use it as an estimate only. Complex activity such as DeFi, staking, mining, business trading, or many swaps may need specialist software or advice.
Sources & references
Key takeaways
- A repayment schedule shows the month-by-month payment split.
- Interest is usually heavier in the early years.
- Capital repayment grows as the balance falls.
- The schedule is useful for seeing overpayment impact.