UK Homeowners Spend 21% of Income on Mortgages: What This Means in 2026

As of May 2026, UK homeowners are committing around 21.3% of their gross income to initial mortgage repayments, according to a recent report by UK Finance. This is the highest level since 2008, with significant regional differences in mortgage affordability and buy-to-let returns.

Dissecting the Numbers

Regional Differences

UK Finance’s Lending Where We Live report reveals that borrowers in North Norfolk and the London Borough of Hillingdon spend over a quarter of their gross income on mortgage repayments, at 25.7% and 25.1% respectively. Other areas of high expenditure include Luton (24.9%), Slough (24.8%), and Spelthorne (24.8%), all within the London commuter belt. In contrast, seven of the ten most affordable local authorities are in Scotland, where borrowers need almost nine percentage points less of their gross income to cover initial mortgage repayments.

Buy-to-Let Returns

Despite challenges such as stamp duty surcharges and stricter underwriting standards, all regions of the UK saw growth in buy-to-let purchase activity in 2025. However, returns varied widely. The highest rental yields were found in Scotland, with a gross yield of over 9%. Meanwhile, the lowest returns were scattered across England, with areas such as South Hams in Devon, Cambridge in East Anglia, the Derbyshire Dales, and Rutland all seeing returns of around 5%.

Worked Examples

First-Time Buyer

Consider a first-time buyer in London, where the typical borrower has £280,000 of mortgage debt. Assuming a 75% loan-to-value ratio, their mortgage would be £210,000. With the current mortgage rates at 3.75%, their monthly repayment would be approximately £1,029. This represents around 25% of the average UK gross monthly income of £4,110, which is above the national average of 21.3%.

Remortgager

Now consider a borrower in Northern Ireland, where the average mortgage debt is significantly lower at £99,500. If they were to remortgage at 75% loan-to-value, their mortgage would be approximately £74,625. With the same interest rate of 3.75%, their monthly repayment would be around £366. This represents just over 8% of the average UK gross monthly income, significantly below the national average.

Market Context

These figures represent a significant increase from 2024, when the average UK homeowner spent just over 18% of their income on mortgage repayments. The increase in the proportion of income spent on mortgages is likely due to the rise in the Bank of England base rate, which currently stands at 3.75% as of April 2026.

Frequently Asked Questions

What percentage of my income should I spend on a mortgage?

The general rule of thumb is to spend no more than 28% of your gross monthly income on housing expenses, including your mortgage. However, as of 2025, the average UK homeowner is spending 21.3% of their income on mortgage repayments.

What are the least affordable areas in the UK for mortgage repayments?

As of 2025, the least affordable areas in the UK for mortgage repayments are North Norfolk and the London Borough of Hillingdon, where borrowers spend over 25% of their gross income on mortgage repayments.

What are the most affordable areas in the UK for mortgage repayments?

As of 2025, seven of the ten most affordable local authorities for mortgage repayments are in Scotland, where borrowers need almost nine percentage points less of their gross income to cover initial mortgage payments.

What is the average mortgage debt in the UK?

As of 2025, the typical borrower in London has £280,000 of mortgage debt, the highest in the UK. The region with the next highest level is the South East, while Northern Ireland has the lowest average mortgage debt at £99,500.