How much can I borrow for a mortgage based on my income?

As a very rough starting point, lenders often work in the region of about 4 to 4.5 times annual income, and sometimes more or less. It's only a ballpark: the actual amount depends on your outgoings, credit history, deposit, the type of income and each lender's own rules, so real figures vary a lot.

Is an income multiple a guarantee of what I can borrow?

No. An income multiple is just a rough guide. Lenders make a full affordability assessment looking at your income, regular commitments, credit and more, so what you're actually offered can be higher or lower. A qualified adviser can give you a realistic figure.

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How much could I borrow?

A rough, ballpark idea based on income — a starting point for a conversation, not a decision or a promise to lend.

Your annual income — before tax

Second applicant's income — optional, for a joint mortgage

Deposit — optional, to gauge a property price

You might borrow in the region of

£0

A rough guide only — lenders decide based on much more than income.

This uses a rough guide of about 4 to 4.5× total income. It's a common starting point, but only that — real figures depend on your full situation and each lender's rules.

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Why this is only a rough guide

You'll often see the idea that you can borrow "around 4 to 4.5 times your income". It's a handy starting point — but it's genuinely just a ballpark. Lenders don't lend on income alone; they carry out a full affordability assessment.

What they actually weigh up includes:

Your regular outgoings — credit commitments, childcare, other loans.
Your credit history.
Your deposit and the loan-to-value.
The type of income — employed, self-employed, bonus, contract.
Each lender's own rules, which vary a lot.

Because of all that, what you're actually offered can be meaningfully higher or lower than a simple multiple suggests.

The honest bit

This is a rough guide, not a decision and not a promise to lend. It doesn't check your circumstances and no lender has assessed anything. The only way to know what's realistic is a proper look at your situation — Penny doesn't give advice, but we can connect you, free, to a qualified adviser who does exactly that.

Common questions

Is 4.5× income a guarantee?

No. It's a rough rule of thumb. Some people can borrow more, some less — it all comes down to the lender's full affordability assessment of your income, outgoings, credit and deposit.

Does a bigger deposit help?

Often, yes. A larger deposit lowers the loan-to-value, which can open up more lenders and better rates — but affordability still has to stack up. An adviser can explain how it affects your options.

This tool gives a rough estimate for general guidance, not advice, and is not a decision or an offer to lend. What you can actually borrow is decided by a lender after a full assessment. Your home may be repossessed if you do not keep up repayments on a mortgage.