Tenant Rent Affordability Calculator
Most UK letting agents and referencing services use a 30x monthly rent rule as a minimum affordability check: a prospective tenant’s annual gross income should be at least 30 times the monthly rent (equivalent to 2.5 times the annual rent). Enter the rent and the applicant’s income to check against this benchmark.
How rent affordability checks work
There is no statutory affordability ratio for private tenancies. The 30x monthly rent rule is an industry convention used by most referencing agencies because it keeps rent near 30 to 35 percent of gross income, the level at which arrears risk starts climbing. Some agencies work from 2.5 times annual rent instead, which is the same test expressed differently.
What referencing actually checks
A full reference combines the affordability multiple with credit history, an employer confirmation of income, and a previous landlord reference. Affordability is the piece that predicts arrears best, which is why it is the one agencies treat as a hard gate rather than a judgement call.
When an applicant falls short
The standard route is a guarantor who passes their own affordability check, usually at a higher multiple than the tenant. The Renters’ Rights Act caps how much rent can be taken in advance, so large upfront payments are no longer a lawful substitute for a passed reference. Whatever you decide, apply the same criteria to every applicant: consistent, documented screening is also your defence against discrimination complaints.
Frequently asked questions
What income does a tenant need to afford my rent?+
Most referencing agencies treat rent as affordable when it is no more than roughly 30 to 35 percent of gross income, which works out near the common rule of thumb of annual income being 30 times the monthly rent. This is an industry convention rather than a legal rule; the calculator shows the standard multiples for the figures you enter.
What are my options if a tenant does not pass affordability?+
The usual route is a guarantor who passes their own affordability check, typically at a higher multiple than the tenant. Note that the Renters' Rights Act caps how much rent can be taken in advance, so large upfront payments are no longer a lawful way around a failed reference.
Is affordability checking a legal requirement?+
No statute sets an affordability ratio. Right to Rent checks are a legal requirement, and affordability referencing is the industry standard because arrears are far harder to fix after move-in than to screen for before it.
This calculator is for guidance only and does not constitute a credit or referencing decision. Always run a full reference check before signing a tenancy agreement.
STEMHQ holds guarantor details, referencing outcomes, and right-to-rent evidence against each tenancy, so the checks you ran are documented if a case ever reaches court.
Start free