TL;DR
Key points
How much you can borrow for a UK mortgage depends on income, spending, financial commitments, deposit, credit history, dependants, employment type and the property itself. A simple income multiple can give a rough guide, but it does not replace a full lender affordability assessment.
Different lenders calculate affordability in different ways. The same applicant can get different results depending on overtime, bonus income, self-employed income, childcare, car finance, credit cards and loan-to-value.
It is best to check affordability before viewing properties seriously. Once you know the likely mortgage range, you can plan the deposit, solicitor fees, survey, Stamp Duty and the cash buffer you need after completion.
What affects mortgage affordability?
Income
Lenders assess salary, bonus, overtime, self-employed income, Ltd director income and stability.
Commitments
Loans, credit cards, leases, car finance, maintenance and childcare can reduce maximum borrowing.
Deposit
Your deposit affects loan-to-value, available products and the risk profile of the application.
Credit history
Your credit report can affect lender choice, rate and whether a case needs specialist assessment.
What is mortgage affordability?
Mortgage affordability is the lender’s assessment of whether you can safely repay the mortgage now and in future. It includes income, commitments, spending, deposit, credit history, age, dependants, employment type and the property.
Two people with the same income can receive different results if one has car finance, childcare, credit card balances or irregular income. This is why lender choice and case preparation matter.
Mortgage affordability calculator
Use this calculator as a rough starting point. It does not replace a full lender assessment, but it can help you understand how income and monthly commitments affect borrowing.
How does it work?
Many lenders use roughly 4-5 times annual gross income as a starting point, but the final decision depends on spending, commitments, credit history, deposit, dependants and income type.
Your income
Loans, credit cards, leases, car finance, maintenance or other regular commitments.
This is only an indicative calculation. The lender will complete a full affordability assessment and may lend less or more depending on income, commitments, deposit, credit history, dependants and property type.
Results
Want a more accurate result? A broker can review your situation, compare criteria across different lenders and estimate a more realistic borrowing range.
Check affordability with a brokerIncome multiples are only a starting point
Many lenders use an income multiple such as 4x, 4.5x or 5x annual income as a starting point. Higher multiples may be available in selected cases, but usually only when the income, deposit, credit profile and overall risk fit the lender.
What does a lender check?
- type and stability of income
- monthly spending and financial commitments
- number of dependants
- deposit and loan-to-value
- credit history and credit report
- age and mortgage term
- property type and valuation
- whether the case fits lender criteria
How to prepare before applying
Before applying, check your income evidence, regular spending, financial commitments and credit report. Avoid random credit applications and make sure the budget includes the mortgage, deposit and buying costs.
Checking your credit history before applying can help spot errors or outdated entries. If this is your first purchase, also review the first-time buyer guide.
FAQ
Frequently asked questions
How much can I borrow for a mortgage in the UK?
It depends on income, commitments, spending, deposit, credit history, dependants, age, employment type and lender criteria. A basic income multiple can give a rough guide, but the full result depends on affordability assessment.
Will a lender lend 4 or 5 times my income?
Sometimes, but it is not guaranteed. The lender also checks commitments, cost of living, dependants, deposit, credit history and the overall risk of the application.
Why do different lenders give different affordability results?
Each lender has its own affordability calculator and criteria. Differences can come from overtime, bonus income, self-employed income, childcare, debts, age, mortgage term and property type.
What should I check before applying for a UK mortgage?
Start with your credit history, initial affordability and realistic purchase budget. It can also help to check your credit report, for example through CheckMyFile, to make sure it does not contain errors or outdated information. A mortgage broker can help estimate affordability, identify suitable lenders and explain the additional costs of buying a property.
Is affordability the same as credit score?
No. Affordability is about how much you may be able to borrow based on income, spending and commitments. Credit score and credit history relate to how you have managed credit in the past.