How Much of Your Income Should Go on Housing in 2026?

The old rule of thumb - spend no more than roughly a third of your income on housing - was developed in a very different cost environment. Here’s how it holds up against current UK rents, mortgage costs, and wages.

The traditional guideline

A widely cited benchmark suggests housing costs (rent or mortgage, including any service charges) shouldn’t exceed around 28–30% of gross income - sometimes quoted as closer to a third of net (take-home) income in UK-specific guidance. This figure has circulated in various forms for decades and underpins some mortgage lender affordability calculations.

Why the benchmark is under real strain in 2026

Average UK private rents reached £1,383 a month in the 12 months to May 2026, up 3.3% annually, in a market where average wage growth has been running at a broadly similar or slightly higher pace - meaning the ratio hasn’t necessarily worsened everywhere, but it started from an already-stretched position for many renters, particularly in high-cost regions. In London specifically, average rent stood around £2,294 in May 2026, a figure that alone can exceed 30% of gross income for many single earners on typical salaries, before any other costs are considered.

Why the guideline varies so much by region

Because average earnings don’t vary as dramatically by region as housing costs do, the traditional 28–30% guideline is far easier to achieve in lower-cost areas (the North East, for example, where average rent was around £776–780 a month in mid-2026) than in London or the South East, where it’s genuinely difficult for many single earners to stay within the benchmark at all without a high income or a shared household.

What to do if you’re comfortably over the traditional benchmark

• Recognise that exceeding 30% doesn’t automatically mean financial trouble if other costs are well managed and you’re still able to save meaningfully - the guideline is a useful sense-check, not a strict rule with a hard cut-off.
• Look at your total budget holistically rather than fixating purely on the housing percentage - someone with low transport costs, no dependents, and modest discretionary spending may comfortably manage a higher housing percentage than the guideline suggests.
• Factor housing costs into decisions about where to live relative to where you work, since commuting costs and time are a genuine trade-off against potentially lower rent further from a city centre.

How this interacts with mortgage affordability specifically

For mortgage holders, lenders apply their own affordability assessments (typically allowing borrowing based on income multiples and a stress-tested interest rate) which don’t map exactly onto the 28–30% guideline - it’s entirely possible to be approved for a mortgage that, once other costs are considered, puts real strain on a monthly budget. Running your own numbers against the guideline, independent of what a lender is willing to offer, is a useful sense-check before committing to a specific mortgage size.

Where this connects to the wider budgeting picture

If housing is consuming a high share of your income, our dedicated article on rebuilding the 50/30/20 rule for 2026 covers how to adjust the wider budget split when one ‘needs’ category is unusually large relative to income. If tracking percentages in detail isn’t for you, the anti-budget method sidesteps category splits altogether by automating fixed costs and savings first and treating the rest as free to spend.

The bottom line

The traditional 28–30% housing guideline remains a useful benchmark, but it’s genuinely harder to hit in high-cost UK regions in 2026 than the rule of thumb assumes. Use it as a sense-check against your specific circumstances and region, rather than a hard rule that means something has gone wrong if you exceed it.