Repayment schedule & loan calculator.
Enter the loan amount, debit interest and repayment rate — and instantly see what the financing really costs you. Including a repayment schedule for the first years and a note on which portion is deductible as income-related expenses.
What does your financing really cost you?
The monthly instalment (annuity) is only half the story. What matters is how it splits between interest and repayment — because for let properties only the interest portion is tax-deductible as expenses. Try it out:
| Year | Interest | Repayment | Remaining debt |
|---|---|---|---|
| 1 | £11,294.39 | £6,105.61 | £293,894.39 |
| 2 | £11,058.29 | £6,341.71 | £287,552.68 |
| 3 | £10,813.07 | £6,586.93 | £280,965.75 |
| 4 | £10,558.36 | £6,841.64 | £274,124.10 |
| 5 | £10,293.80 | £7,106.20 | £267,017.90 |
The calculation follows the classic annuity formula: annual instalment = loan × (nominal rate + initial repayment rate). Within the instalment the ratio shifts month by month — the interest portion falls with the remaining debt, the repayment portion rises. The schedule above shows exactly this shift.
Keep every financing in view
Store your loans per property and see the remaining debt, interest burden and deductible portion at any time.
At last I can see at a glance which part of my instalment counts for tax. Before, I fiddled it together in Excel every year.