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Rent Affordability Calculator UK
Enter your salary and monthly rent — get an instant verdict on whether your rent is Affordable, a Stretch, or Risky. See your exact rent-to-income ratio and how much you have left each month.
What is your income?
Your salary or regular pay
I want to enter my…
Before tax — just the number, e.g. 35000 for a £35,000 salary
How much is your rent?
Your monthly rent payment
The amount you pay — or plan to pay — every month
Enter your income above to get started — your result will appear here
What is a good rent-to-income ratio in the UK?
The widely accepted benchmark in the UK is the 30% rule — spending no more than 30% of your gross monthly income on rent. This guideline is used by financial advisors, the Money and Pensions Service (MaPS), and many UK letting agents who assess tenant affordability.
In practice, many UK renters exceed this threshold — particularly in London, Bristol, Brighton, and Oxford, where average rents are high relative to local wages. Nationwide data shows that renters in London spend an average of 40–50% of their income on housing costs, significantly above the recommended threshold.
A rent-to-income ratio between 30–40% is workable if you have no other major debts, minimal travel costs, and a steady income. Above 40%, you are statistically more vulnerable to financial hardship from unexpected events — job loss, emergency costs, or rent increases.
How UK letting agents assess affordability
Most UK letting agents apply a rule that your annual gross salary must be at least 30× the monthly rent. For example, to rent a property at £1,000/month, you would typically need to earn £30,000/year. Some agents in London and high-demand cities use a 40× multiplier.
If you do not meet the income threshold, landlords may ask for a guarantor (someone who agrees to cover the rent if you cannot), a larger deposit, or additional months of rent paid upfront.
Frequently asked questions
What percentage of my salary should go on rent in the UK?
The widely accepted UK guideline is no more than 30% of your gross (pre-tax) monthly income on rent. Some financial advisors use 25% as a more conservative target. Spending 30–40% is considered a "stretch" — manageable but leaves little buffer. Above 40% is generally considered financially risky, as it leaves too little for savings, bills, and unexpected costs.
Is £1,200/month rent affordable on a £35,000 salary?
On a £35,000 salary, your gross monthly income is approximately £2,917. A £1,200 monthly rent equals 41% of that — which falls into the "Risky" category under the 30% rule. To afford £1,200 comfortably within the 30% threshold, you would need a salary of approximately £48,000/year.
How do I calculate my rent-to-income ratio?
Divide your monthly rent by your gross monthly income, then multiply by 100. For example: £900 rent ÷ £2,500 monthly income × 100 = 36%. Our calculator does this instantly and tells you whether the result is Affordable (under 30%), Stretch (30–40%), or Risky (over 40%).
Should I use my gross or net (take-home) salary?
The 30% rule is traditionally applied to gross salary. However, using your net take-home pay gives a more conservative and realistic picture of what you can actually afford. On a £35,000 salary, take-home is roughly £2,300–£2,400/month after tax and National Insurance — considerably less than the gross figure. You can switch between annual and monthly input in our calculator.
What is a "Stretch" rent in the UK?
A "Stretch" rent is one that takes between 30% and 40% of your monthly gross income. It is workable if you budget carefully and have minimal other debt, but leaves limited headroom for savings or unexpected expenses. Most financial advisors recommend treating the Stretch zone as a short-term situation rather than a long-term one.
What happens if I spend too much on rent?
Overpaying on rent — typically defined as more than 40% of income — increases financial stress and vulnerability. It leaves less for council tax, utilities, food, travel, and savings. It also reduces your ability to build an emergency fund. The UK Money and Pensions Service (MaPS) recommends aiming to save at least 3 months of living costs as an emergency buffer, which becomes very difficult when rent consumes too much income.