Affordability calculator
How much can I borrow?
An indicative borrowing range from your income and deposit, using the four to four-and-a-half times income multiples most UK lenders work to, and the purchase price that range puts within reach.
- Bank of England base rate
- 3.75%
- 2-year fix, 75% LTV
- 4.92%
- 5-year fix, 75% LTV
- 4.77%
UK average quoted rates · Source: Bank of England, September 2026 · updated monthly. Reference data only — not a product offer and not advice.
Indicative purchase price
£680,000 – £740,000
Deposit of £200,000 — around 27% at the top of the range.
- Combined income
- £120,000
- Borrowing at 4×
- £480,000
- Borrowing at 4.5×
- £540,000
Based on the current UK average of 4.77% for a 5-year fix at 75% LTV — Bank of England, September 2026. Updated monthly. Reference data only, not a product offer.
Your figures, considered
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What you're looking for
Step 1 of 2Indicative only. This is not financial advice, a mortgage offer or a tax computation. Confirm the figures with a qualified broker, solicitor or tax adviser before you commit.
Questions we get asked
- How much can I usually borrow?
- Most UK lenders work between four and four and a half times gross annual income, occasionally more for high earners or certain professions. The calculator shows that range rather than a single figure, because the multiple you are offered depends on credit commitments, dependants and the lender's own affordability stress test.
- How big a deposit do I need in London?
- Five to ten per cent is the minimum on most mainstream products, but in London a larger deposit meaningfully improves the rate you are offered. Remember that stamp duty, legal fees and survey costs come out of your cash, not the mortgage.
- Does a second income count?
- Joint applications are normally assessed on combined income, so add the second salary in the field provided. Bonus and self-employed income are treated more cautiously and often averaged over two or three years.
- Is this a mortgage offer?
- No. It is an indicative range to size your search. A broker will run a decision in principle against your actual credit file, outgoings and the property itself before anything is binding.