Letting out a spare room in your own home is one of the simplest ways to earn extra income in the UK — and up to £7,500 of it can be completely tax-free each year. The Rent-a-Room scheme has been a fixture of UK tax law since 1997, yet many people do not claim it or are unsure whether their circumstances qualify.
This guide explains the full rules, the two calculation methods available, how short lets and Airbnb fit in, and when you might be better off opting out.
What Is the Rent-a-Room Scheme?
The Rent-a-Room scheme is a government tax relief that allows you to earn up to £7,500 per year completely free of income tax and National Insurance by letting out furnished accommodation in your own home.
Key facts:
- Threshold: £7,500 gross income per year (£3,750 if letting income is shared with a co-owner)
- Applies to: furnished rooms in your own home (your main residence)
- Not available for: unfurnished lets, entire home lets where you are not living there, or separate self-contained flats
- You do NOT need to be a homeowner — tenants can also use it if their landlord permits subletting
Who Qualifies?
You qualify for Rent-a-Room if:
- You let out furnished residential accommodation
- The accommodation is in your home — the property where you live
- You are physically sharing the property with your lodger (i.e., you actually live there)
- The income is gross receipts from letting (including any fees the lodger pays for cleaning, food, or other services)
Who Does NOT Qualify
- Landlords letting an entire property (buy-to-let): this is standard property income, not Rent-a-Room
- Homeowners who rent out their property while they are living elsewhere — the exemption only applies while you are in residence
- Those letting unfurnished rooms — the room must be furnished
- Letting a self-contained annex or granny flat that is part of your property but has separate facilities — HMRC treats these as separate dwellings
The Two Calculation Methods
When your gross Rent-a-Room income exceeds £7,500, you must report it on Self-Assessment. At that point, you choose between two methods:
Method 1: Use the Rent-a-Room Exemption
Calculate tax only on the income above £7,500:
- Gross lodger income: £9,000
- Less Rent-a-Room threshold: £7,500
- Taxable amount: £1,500
Under this method, you cannot deduct any expenses — the £7,500 threshold acts as an automatic allowance.
Method 2: Standard Profit Calculation
Calculate your profit normally — gross income minus allowable expenses — and pay tax on the profit:
- Gross income: £9,000
- Allowable expenses (repairs, cleaning, proportion of utilities, insurance): £3,200
- Taxable profit: £5,800
In this case, you might be better off using standard accounts. However, you must weigh this each year — you can switch between methods, but you must actively elect to use the standard method (the Rent-a-Room exemption applies automatically).
Under the Threshold: No Action Needed
If your gross Rent-a-Room income is £7,500 or less, the exemption is automatic. You do not need to:
- Register for Self-Assessment
- Complete any forms
- Tell HMRC
HMRC calls this the “automatic exemption.” You receive the £7,500 tax-free simply by doing nothing.
Important: The £7,500 limit is based on gross income — everything the lodger pays you, including charges for meals, laundry, and other services. It is not based solely on the rent figure.
Joint Owners and Shared Income
If you share ownership of the property with someone else (e.g., a spouse, civil partner, or co-owner), the Rent-a-Room threshold is halved:
| Ownership | Threshold |
|---|---|
| Sole owner or single tenant | £7,500 |
| Joint owners/tenants (both receiving income) | £3,750 each |
If only one co-owner receives the rental income, the full £7,500 threshold applies to that person alone.
Does Rent-a-Room Apply to Airbnb?
Yes — the Rent-a-Room scheme applies to short-term furnished lettings via Airbnb and similar platforms, provided:
- You are living in the property at the time
- You are letting furnished rooms (not the whole property while you are elsewhere)
If you rent out your whole house while on holiday abroad, that income is not eligible for Rent-a-Room — it is standard property income.
| Scenario | Rent-a-Room eligible? |
|---|---|
| Let a spare room on Airbnb while you live there | Yes |
| Rent your whole home for a weekend while you stay elsewhere | No |
| Let a room to a long-term lodger while you live there | Yes |
| Rent a self-contained annex with separate kitchen/bathroom | Generally no — this is a separate dwelling |
| Let furnished rooms to foreign students while you live there | Yes |
Rent-a-Room and Benefits
If you receive means-tested benefits (Universal Credit, Housing Benefit, Council Tax Reduction), rental income from a lodger can affect your entitlement. However, the rules include some protections:
- Universal Credit: Up to £20 per week of lodger income is disregarded (a “boarder disregard”). Income above this is treated as unearned income and reduces your UC award pound-for-pound.
- Housing Benefit: Similar treatment — lodger income above a certain disregard reduces your award.
- Council Tax: Taking in a lodger may affect which discounts apply; a full household occupant may remove a 25% single-person discount.
Always notify the relevant benefits office before taking in a lodger to avoid overpayment penalties.
Worked Example: Should You Opt In or Out?
Sarah has a lodger paying £700/month (£8,400/year). She wants to know whether to use the Rent-a-Room exemption or standard expenses.
Her lodger-related costs are:
- Extra heating/electricity: £400/year
- Wear and tear / replacement items: £250/year
- Extra broadband cost: £60/year
- Total: £710/year
Method 1 (Rent-a-Room):
- Taxable income: £8,400 − £7,500 = £900
- Tax at 20% (basic rate): £180/year
- Net income: £8,400 − £180 = £8,220
Method 2 (Standard expenses):
- Profit: £8,400 − £710 = £7,690
- Tax at 20%: £1,538/year
- Net income: £8,400 − £1,538 = £6,862
In this example, the Rent-a-Room method is significantly better because Sarah’s expenses are low relative to the £7,500 deduction. Method 2 would only beat it if her expenses exceeded £6,500 (i.e., above £7,500 − the portion over threshold).
How to Claim Rent-a-Room Relief
Under the threshold (gross income ≤ £7,500): No action needed. The exemption is automatic.
Over the threshold:
- Register for Self-Assessment at GOV.UK if you have not already done so
- On your tax return, complete the UK property pages
- Choose which method to apply (Rent-a-Room exemption or standard expenses)
- To use the standard expenses method instead of Rent-a-Room, you must make an election — the Rent-a-Room exemption applies by default
Common Mistakes
| Mistake | Consequence |
|---|---|
| Assuming Rent-a-Room applies to an entire-house Airbnb let while away | Wrong — this is property income, not Rent-a-Room |
| Letting an unfurnished room | Not eligible — room must be furnished |
| Forgetting to include service charges (meals, cleaning) in gross income | Underreporting gross receipts, which could mean threshold incorrectly assumed not exceeded |
| Two co-owners each assuming the full £7,500 threshold applies | Each is only entitled to £3,750 when both receive the income |
| Not notifying DWP when receiving lodger income alongside benefits | Risk of benefit overpayment |