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Mortgage Calculator UK

Home Price (£)

Deposit

Loan Term (years)

Interest Rate (%)

Start Month

+ Optional Costs

Council Tax (£/yr)

Buildings Insurance (£/yr)

Mortgage Insurance (£/yr)

Other Costs (£/yr)

Monthly Repayment

£1,719.44

Capital + interest

Interest Only

£1,283.33

No capital repaid

Mortgage Amount

£280,000

LTV Ratio

80.0%

Total Interest

£235,833

Total Monthly (incl. optional costs)

£1,936.11

Est. SDLT

£5,000

Principal 54%Interest 46%

SDLT (Stamp Duty) — 0% on first £250,000; 5% on £250k–£925k; 10% on £925k–£1.5m; 12% above. First-time buyers get relief on homes up to £500,000.
LTV — Best rates typically require ≥25% deposit (75% LTV). Below 10% deposit triggers higher-risk mortgage insurance.
Stress test — UK lenders stress-test affordability at ~3% above the reversion rate (usually SVR). Affordability = gross annual income × 4–4.5.

UK mortgage with pound sterling, deposit, repayment vs interest-only, and SDLT stamp duty.