Mortgage Calculator UK
UK mortgage calculator with stamp duty and repayment vs interest-only
Loan Details
Optional — for full PITI estimate
Estimated annual property taxes
Shows how extra payments reduce your loan
Monthly PITI Payment
£1,834
Principal, interest, taxes & insurance
Monthly Payment Breakdown
First-month breakdown · hover segments for details
Monthly P&I
£1,334
Principal & interest
Total Interest
£160,199
Over loan lifetime
Loan Amount
£240,000
20.0% down
Payoff Date
May 2051
25 yrs remaining
Loan Summary
- Home Price
- £300,000
- Down Payment (20.0%)
- £60,000
- Loan Amount
- £240,000
- Interest Rate
- 4.50%
- Monthly Tax
- £400
- Monthly Insurance
- £100
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Balance vs. Interest Over Time
Amortization Schedule
| Month | Payment | Principal | Interest | Balance |
|---|---|---|---|---|
| 1 | £1,334 | £434 | £900 | £239,566 |
| 2 | £1,334 | £436 | £898 | £239,130 |
| 3 | £1,334 | £437 | £897 | £238,693 |
| 4 | £1,334 | £439 | £895 | £238,254 |
| 5 | £1,334 | £441 | £893 | £237,814 |
| 6 | £1,334 | £442 | £892 | £237,371 |
| 7 | £1,334 | £444 | £890 | £236,928 |
| 8 | £1,334 | £446 | £888 | £236,482 |
| 9 | £1,334 | £447 | £887 | £236,035 |
| 10 | £1,334 | £449 | £885 | £235,586 |
| 11 | £1,334 | £451 | £883 | £235,135 |
| 12 | £1,334 | £452 | £882 | £234,683 |
How UK Mortgages Work
UK mortgages have two key time periods: the mortgage term (usually 25 years, the full repayment period) and the deal period (2–10 years at a fixed or tracker rate).
After your deal ends, you revert to the lender's SVR (often 7–8%). Always remortgage to a new deal to avoid paying over the odds.
Stamp Duty Calculator 2026
Example: £350,000 property
Standard Buyer — £5,000 SDLT
| Band | Rate | Tax |
|---|---|---|
| £1 – £250,000 | 0% | £0 |
| £250,001 – £350,000 | 5% | £5,000 |
| Total SDLT | £5,000 | |
First-Time Buyer — £0 SDLT
| Band | Rate | Tax |
|---|---|---|
| £0 – £425,000 | 0% | £0 |
| Total SDLT | £0 | |
UK Mortgage Rates 2026 by LTV
| LTV | 2-Year Fix | 5-Year Fix |
|---|---|---|
| 60% | 4.19% | 4.05% |
| 75% | 4.45% | 4.29% |
| 80% | 4.75% | 4.55% |
| 85% | 5.10% | 4.89% |
| 90% | 5.45% | 5.19% |
| 95% | 5.85% | 5.55% |
First-Time Buyer Schemes
Help to Buy (Closed 2023)
ClosedThe equity loan scheme closed March 2023. Existing holders retain their loans until sold/repaid.
Lifetime ISA (LISA)
OpenSave up to £4,000/year, government adds 25% (up to £1,000/year). Use towards your first home up to £450,000.
Shared Ownership
OpenBuy a 25–75% share of a property and pay subsidised rent on the remainder. Increase share over time ("staircasing").
95% Mortgage Guarantee
CheckGovernment backstop allowing lenders to offer 95% LTV mortgages. Check current availability with lenders.