How much can I borrow for a UK mortgage?

Most UK lenders will lend up to 4 to 4.5 times your annual income, though some offer up to 5.5 times for higher earners. Affordability is also assessed against a stress-tested rate (typically your rate plus 3%).

How much can mortgage overpayments save?

Overpaying reduces the outstanding balance faster, meaning less interest accrues. For example, overpaying £200 per month on a £250,000 mortgage at 4.5% over 25 years could save over £20,000 in interest and cut the term by 3 to 4 years.

What is loan-to-value (LTV) and why does it matter?

LTV is the percentage of the property value you are borrowing. Lower LTV unlocks better interest rates. Most competitive rates begin at 60% LTV, with better deals at each 5% threshold below that.

Mortgage Calculator

Calculate monthly repayments, total interest, and see how overpayments could save you thousands. Includes affordability check.

Property & Mortgage

Property price

Deposit

20% deposit — 80% LTV (Loan-to-Value)

Mortgage term

years

Interest rate

% per year

Repayment type

Affordability & Overpayments

Your annual income

Partner annual income

Max borrowing (4.5x)£225,000

Comfortable monthly (28%)£1,167

Monthly overpayment

Monthly payment

£1,112

Total interest

£133,498

Total repaid

£333,498

LTV (Loan-to-Value)

80%

Standard rates

Payment Breakdown

Item	Monthly	Annual	Over term
Capital repayment	£369	£4,431	£200,000
Interest	£742	£8,909	£133,498
Total payment	£1,112	£13,340	£333,498

First-year breakdown shown for monthly/annual columns. Capital vs interest ratio changes over the term as you pay down the principal.

Balance Over Time

Smart Tips

Your LTV is 80% — better rates available below 75%

Lenders typically offer their best rates at 60% LTV, with another tier at 75%. Increasing your deposit to bring LTV below 75% could reduce your rate noticeably.

MoneyHelper: Saving for a mortgage deposit

You'll pay 67% of your loan amount in interest

Over a long term with higher rates, interest adds up significantly. Consider a shorter term or overpayments to reduce the total cost. Even a 0.5% rate reduction could save thousands.

Bank of England: Interest rates and Bank Rate

Don't forget stamp duty in your budget

Stamp duty is an additional cost on top of your deposit. First-time buyers in England pay nothing on the first £300,000. Use our Stamp Duty Calculator for the exact amount for your region.

GOV.UK: Stamp duty land tax

Frequently asked questions

How much can I borrow for a UK mortgage?: Most UK lenders will lend up to 4 to 4.5 times your annual income, though some offer up to 5.5 times for higher earners. Affordability is also assessed against a stress-tested rate (typically your rate plus 3%).
How much can mortgage overpayments save?: Overpaying reduces the outstanding balance faster, meaning less interest accrues. For example, overpaying £200 per month on a £250,000 mortgage at 4.5% over 25 years could save over £20,000 in interest and cut the term by 3 to 4 years.
What is loan-to-value (LTV) and why does it matter?: LTV is the percentage of the property value you are borrowing. Lower LTV unlocks better interest rates. Most competitive rates begin at 60% LTV, with better deals at each 5% threshold below that.