Buying guide

How much can I borrow for a mortgage?

Before looking for a home, you should calculate how much you can borrow and afford for a mortgage.

Gill South
Last updated: 27 August 2025 | 5 min read
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Determining your mortgage borrowing power is a key first step before house hunting. A rough guide is five times your gross income, but online borrowing calculators provide a more detailed estimate based on your income, expenses, and deposit.

Lenders typically expect a 20% deposit, which secures better interest rates. Your credit score and savings history are also crucial. While pre-approval gives a strong indication of your limit, the final loan amount also depends on the specific property you choose.

What you’ll learn:

How much can I borrow for a mortgage?

How much of a mortgage can I afford?

How can I borrow as much as possible?

Regular income earners are treated differently to those that are self employed

Will pre-approval on a home loan tell me exactly what I can borrow?

How can my credit rating affect my ability to borrow for a mortgage?

Author

Gill South Gill South
Business and property journalist