Rent Affordability Calculator
Check a rent against MoneyHelper’s 30% guideline and the affordability check most UK letting agents actually use — plus what it means for your real take-home pay.
Start here
How to use this calculator
This checks a specific rent against two different UK benchmarks — not a landlord’s actual decision.
Enter your income
Add your gross annual income. Renting with someone else? Switch to joint applicants and add both incomes.
Enter the rent you’re checking
Add the monthly rent for the property, and your nation for an accurate deposit estimate.
See both checks at once
The 30% budgeting guideline and the letting industry’s 30x affordability test don’t always agree — this shows you both.
The budgeting guideline
The “30% rule”
MoneyHelper describes a commonly used guideline: “spend up to 30% of your income (before tax) on rent to avoid straining your budget” — but is explicit that “this rule is just a guide and keeping to 30% isn’t always possible.” It’s calculated on your gross income, not your take-home pay, and MoneyHelper itself recommends building a full personal budget rather than relying on a single fixed percentage.
The check that actually decides your application
How letting agents check affordability
Most UK letting agents don’t use the 30% rule at all. The National Residential Landlords Association (NRLA) describes the standard referencing check as: “multiply the rent by 30; if that figure is equal to or less than their annual salary then the rent is affordable.” That’s the same as needing an annual income of at least 2.5 times the annual rent. This is an industry convention, not a law — individual agents and landlords can and do set their own criteria.
If your income doesn’t clear that 30x check, agents commonly ask for a guarantor whose own income clears a higher bar — often cited as around 36 times the monthly rent (3 times the annual rent) — though this isn’t a formally published industry-wide figure, so treat it as a rough expectation rather than a fixed rule.
Deposit
How much deposit could you be asked for?
Deposit rules differ by nation. In England, the Tenant Fees Act 2019 caps deposits at 5 weeks’ rent for tenancies with an annual rent under £50,000, or 6 weeks’ rent at or above that. In Scotland, deposits are capped at 2 months’ rent. Wales has no statutory deposit cap at all — landlords typically ask for around a month’s rent in practice, but it isn’t a legal ceiling. In Northern Ireland, deposits are capped at 1 month’s rent.
Beyond the numbers
What else agents typically check
Passing an income check is usually only one part of referencing. Agents and landlords commonly also run a credit check, a right-to-rent check (a legal requirement in England), an employer reference, and a previous-landlord reference, and may ask for bank statements or payslips as evidence for the affordability figures above.
Questions
Common questions
Why do I get two different affordability answers?
MoneyHelper’s 30% guideline is a personal budgeting rule of thumb based on gross income. The 30x-income check is what most letting agents actually use to decide whether to approve a tenancy. They’re built for different purposes, so a rent can pass one and fail the other — this tool shows both so you know where you stand on each.
What happens if I fail the 30x affordability check?
Agents commonly ask for a guarantor — someone who agrees to cover the rent if you can’t — whose own income typically needs to clear a higher bar, often cited as around 36 times the monthly rent. Some agents may also accept a larger deposit or rent paid in advance instead, though this varies by agent and landlord.
Is my joint income combined for the affordability check?
Yes — for joint tenancies, agents typically add both applicants’ incomes together before applying the 30x check, the same way this calculator does.
Why is the Wales deposit figure different from the others?
England, Scotland and Northern Ireland each have a specific legal cap on deposits. Wales does not — there’s no statutory maximum, so the figure shown for Wales is a typical amount landlords tend to ask for in practice, not a legal limit.
Does this use my take-home pay or my gross salary?
Both, for different figures. The MoneyHelper 30% guideline and the landlord’s 30x check both use your gross (pre-tax) income, matching how they’re actually defined. The “rent as a share of net income” figure uses your real take-home pay after tax and National Insurance, calculated with this site’s own verified UK tax engine, so you can see the cost against money you’d actually have in hand.
Where these figures come from. The 30% budgeting guideline is taken from MoneyHelper. The 30x landlord affordability formula is taken from the National Residential Landlords Association (NRLA). The guarantor income figure is a commonly cited industry estimate, not an official trade-body rule. Deposit caps are taken from gov.uk (England), gov.scot (Scotland), Propertymark (Wales — no statutory cap) and the Private Tenancies Act (Northern Ireland) 2022. The net-income figures reuse this site’s own verified UK Income Tax and National Insurance calculations for 2026/27. Figures checked on 24 September 2026.
How much rent can you afford? (MoneyHelper) · Referencing your tenant (NRLA) · Mortgage Affordability Calculator
How we calculate · Editorial policy. This is general information, not financial or tenancy advice.