What is the 30-times rule?
Before you sign, most letting agents and many landlords run an affordability check. The most common benchmark is that your yearly income should be about 30 times the monthly rent. You'll sometimes hear it as monthly pay of 2.5 times the rent, which works out the same.
It's not a law, just a rule of thumb, but it's widely used by letting agents and referencing companies.
| Monthly room rent | Yearly income needed (30 times) |
|---|---|
| £727 (East Ham average) | £21,810 |
| £811 (outer London average) | £24,330 |
| £978 (inner London average) | £29,340 |
| £1,250 | £37,500 |
Average rents: SpareRoom rental index, Q1 2026
What it means on a working holiday wage
Most working holiday makers start on hourly paid jobs at or near the minimum wage. On a full-time week of 37.5 hours, from April 2026:
| Age | Yearly pay, full time on minimum wage | Highest monthly rent that passes |
|---|---|---|
| 21 and over | About £24,800 | About £825 |
| 18 to 20 | About £21,200 | About £705 |
So at 21 or over, you can pass with rooms in London's cheapest postcodes, such as East Ham, Manor Park, Chingford, Upper Edmonton and Forest Gate, where the average room is £727–£781 a month. At 18 to 20, even those averages are above the limit, so a guarantor or a lodger room is more likely.
Two more things can trip you up:
- Casual hours are harder to prove. Agents prefer a contract with set hours. Shift work with no minimum hours may not count in full.
- New jobs have no payslips. An offer letter helps, but some agents want 2–3 months of UK payslips.
See where the cheaper areas are in part 1 of this series.
How guarantors work
A guarantor signs an agreement to pay your rent, or the cost of damage, if you don't. Landlords usually want someone who:
- lives in the UK, often a homeowner
- earns about 36 times the monthly rent: for a £978 room, that's about £35,200 a year
- passes their own credit check
Read the guarantee before anyone signs it. In a joint tenancy, where several flatmates sign one agreement, a guarantor can be liable for the whole household's rent, not just your share.
Most people arriving from Australia or New Zealand don't know anyone in the UK who can do this, which is where the options below come in.
What to do if you don't pass
- Use a guarantor company. For a fee, usually a share of the yearly rent, a company acts as your guarantor. Check the landlord or agent accepts them before you pay.
- Rent from a live-in landlord. Lodger rooms often skip formal referencing, and SpareRoom says they're on average £515 a year cheaper than rooms from traditional landlords. The trade-off is fewer legal protections.
- Replace an outgoing flatmate. When a housemate moves out, the current tenants can vouch for you, and landlords are often more flexible.
- Combine incomes. If you're renting a whole flat with friends or a partner, some agents assess your combined income against the rent. Remember you'll all be responsible for the full rent.
- Show your savings. Some landlords will look at bank statements showing savings. Since May 2026 they can't ask for more than a month's rent upfront, but savings can still strengthen your application.
- Wait for your payslips. After 2–3 months of steady UK pay, you're a much stronger applicant. In the meantime, a hostel, short-term room or live-in job can bridge the gap.
- Look at cheaper areas. Rooms in outer London and some East London postcodes come in under the rent you can pass with.
What landlords can't do
In England, landlords and letting agents can't:
- charge you for referencing, credit checks or admin
- ask for more than 1 week's rent as a holding deposit, or more than 1 month's rent in advance
- keep your holding deposit if they decide not to rent to you, unless you gave false information, failed the right-to-rent check or pulled out yourself
If you're asked to pay any of these, ask why in writing, and walk away if it doesn't add up.
FAQ
What is the 30 times rent rule?
It's a common affordability check used by letting agents: your yearly income should be about 30 times the monthly rent. For a £978 room, that's about £29,340 a year. It isn't a law, so some landlords are more flexible.
How much do I need to earn to rent a room in London?
Under the 30-times rule, about £29,340 a year for a room at the inner London average of £978 a month, or about £24,330 for the outer London average of £811. A full-time minimum wage job at 21 or over passes for rooms up to about £825 a month.
Can I rent in London without a guarantor?
Yes. You can use a guarantor company, rent a lodger room from a live-in landlord, take over a room from an outgoing flatmate, or apply once you have a few months of UK payslips.
More in this series
This is part 2 of our renting in London series. Start with part 1: renting in London for working holiday makers, and check how much it costs to live in London to plan your budget.
