Do You Need to Declare Rental Income to HMRC?
Renting out a property can provide a useful additional source of income, but the money you receive is not automatically tax-free.
Whether you’re letting a second property, renting out your former home or earning money from another type of property letting, you need to understand whether the income must be reported to HMRC.
In most cases, tax is based on your rental profit rather than simply the total rent you receive. HMRC defines that profit as rental income less the expenses or allowances you’re entitled to claim. GOV.UK
There are, however, important allowances and exceptions.
What counts as rental income?
Rental income is not necessarily limited to the basic monthly rent paid by a tenant.
When working out your property income, you need to consider the amounts you receive in connection with letting the property.
Once your rental income has been established, allowable expenses or the relevant property allowance can be considered to determine the taxable profit. GOV.UK
What is the £1,000 property allowance?
Individuals can potentially benefit from a £1,000 property allowance.
For qualifying property income of £1,000 or less, the income can generally be tax-free and does not normally need to be reported to HMRC. GOV.UK
If your annual gross property income exceeds £1,000, the allowance can still potentially be useful.
You can generally choose between:
- Deducting your actual allowable expenses, or
- Using the £1,000 property allowance instead
You cannot use the £1,000 allowance and then deduct your actual property expenses as well. GOV.UK
For example, if you received £8,000 of qualifying rental income and had only £400 of allowable expenses, using the £1,000 property allowance could potentially be more beneficial than deducting £400 of actual expenses.
If your actual allowable expenses were £3,000, the position could be very different.
The £1,000 threshold looks at income, not profit
This distinction matters.
Suppose you receive:
Rental income: £6,000
Allowable expenses: £5,500
Your resulting profit might only be £500.
But your gross property income is still £6,000.
You therefore shouldn’t conclude that the £1,000 property allowance means there is nothing to report simply because your eventual profit is below £1,000.
The allowance concerns property income, not merely the profit remaining after expenses. GOV.UK
What expenses can landlords claim?
If you use actual expenses rather than the property allowance, qualifying costs can reduce your rental profit.
HMRC’s guidance includes costs associated with running and maintaining the property business, subject to the relevant conditions.
One particularly important distinction is between repairs and capital improvements.
A repair to an existing feature may potentially be deductible.
Improving or adding something to the property is different.
HMRC gives examples of capital expenditure including:
- Adding an extension
- Installing something that was not previously there
- Replacing a kitchen with one of a higher specification
Capital expenditure cannot normally be deducted as an ordinary rental expense, although some expenditure may be relevant when calculating Capital Gains Tax following a future disposal. GOV.UK
What about mortgage payments?
This is an area where landlords frequently make mistakes.
You cannot simply deduct your entire mortgage payment from the rent you receive.
The payment can include repayment of the money you originally borrowed as well as interest.
For individual landlords with residential finance costs, the current system generally provides relief on qualifying finance costs through a tax reduction rather than allowing those costs to be deducted in full when calculating property profits. GOV.UK
This can make the tax calculation considerably different from the property’s actual monthly cash flow.
What if you rent out more than one property?
HMRC generally treats your UK rental properties as part of a single UK property business.
If you rent out several UK properties, profits and losses are generally combined to arrive at the overall profit or loss for that property business.
Overseas property is dealt with separately from UK property. GOV.UK
This means you should not necessarily look at each property completely independently when calculating your overall taxable property profit.
What about jointly owned rental property?
Ownership matters.
Where property is jointly owned, the rental income on which each person is taxed depends on their interest in the property and the applicable tax rules.
For married couples and civil partners living together, jointly owned property income is usually taxed equally.
Where the property is owned in unequal shares and the individuals are also entitled to the income in those unequal shares, there are rules allowing the income to be taxed on that basis where the appropriate conditions and declarations are satisfied. GOV.UK
Properties jointly owned with someone who is not your spouse or civil partner can be treated differently.
If you’re buying or already own investment property jointly, it is worth establishing the tax position rather than simply splitting the rent however you prefer.
What if you rent out a room in your home?
Different rules may apply under the Rent a Room Scheme.
If you let furnished accommodation in your main home, you can potentially receive up to £7,500 per year tax-free under the scheme.
The threshold is reduced to £3,750 each where another person is jointly entitled to the income. GOV.UK
If your qualifying income is below the threshold, the exemption can apply automatically.
If it exceeds the threshold, you may be able to choose between calculating the actual profit under the normal rules or using the Rent a Room relief and paying tax on the amount above the threshold. GOV.UK
Can you use Rent a Room and the property allowance together?
Not for the same Rent a Room income.
HMRC’s rules prevent you from combining the £1,000 property allowance with Rent a Room relief on that income. GOV.UK
You therefore need to understand which relief applies rather than simply adding the two allowances together.
What about Airbnb and short-term letting?
Income from letting accommodation through platforms such as Airbnb should not be assumed to be tax-free simply because it is occasional or received through an online platform.
The tax treatment depends on the circumstances of the letting.
For example, renting a furnished room within your own main home may potentially fall within Rent a Room relief.
Letting an entire separate property is different.
If you’re receiving property income through a booking platform, maintain records of the gross income received, platform charges and other relevant expenses rather than relying solely on the amount eventually transferred into your bank account.
Do letting-agent fees count as an expense?
Costs incurred wholly and exclusively for the property rental business can potentially be deductible, subject to HMRC’s property-income rules.
This can include relevant costs associated with managing the letting.
Your accounting records should therefore distinguish between the gross rent generated by the property and costs deducted by an agent or platform before the remaining money reaches you.
Do you pay tax on rental income or rental profit?
Normally, the tax calculation is based on your property profit.
HMRC describes this as the amount remaining after rental income is combined and the expenses or allowances you’re entitled to claim are deducted. GOV.UK
For example:
| Amount | |
|---|---|
| Rental income | £18,000 |
| Allowable expenses | £5,000 |
| Property profit | £13,000 |
This is a simplified illustration.
The actual calculation can be affected by matters such as finance costs, jointly owned property, losses, allowances and other circumstances.
Keep your rental records
Do not wait until January and then try to reconstruct an entire year’s property activity from your bank account.
Keep records of relevant items such as:
- Rental income
- Letting-agent statements
- Repairs and maintenance
- Insurance
- Service charges
- Professional fees
- Replacement items
- Finance costs
- Other property expenditure
- Dates and details of significant property work
It is also sensible to retain invoices and evidence explaining what building work actually involved.
A £4,000 invoice saying only “building work” may not make it obvious several years later whether the expenditure was a repair or an improvement.
Property tax is changing from April 2027
Landlords should also be aware of a significant change that does not apply to the current 2026/27 tax year.
From 6 April 2027, separate Income Tax rates for property income are due to apply. For England, Wales and Northern Ireland, the legislated rates for 2027/28 are 22% basic, 42% higher and 47% additional. The Finance Act 2026 provides for the new property-income regime from 2027/28. GOV.UK
That future change should not be applied prematurely when calculating a 2025/26 or 2026/27 liability.
Frequently Asked Questions
Do I need to tell HMRC if I rent out a property?
Potentially, yes. Whether and how the income must be reported depends on the amount received, applicable allowances and your wider circumstances. Qualifying property income of £1,000 or less can generally fall within the property allowance and may not need reporting. GOV.UK
Is the first £1,000 of rental income always tax-free?
The property allowance can provide up to £1,000 of tax-free property income, but there are conditions and restrictions. If you use the allowance, you cannot also deduct actual expenses against the same income. GOV.UK
Can I deduct my entire mortgage payment?
No. Mortgage capital repayments are not simply deductible from rental income. Residential finance costs are subject to specific tax-relief rules.
Can I claim for renovating my rental property?
It depends on the work. Repairs and capital improvements are treated differently. HMRC specifically identifies improvements and additions as capital expenditure rather than ordinary deductible rental expenses. GOV.UK
What if I only rent out my spare room?
You may qualify for the Rent a Room Scheme, which can provide up to £7,500 of tax-free income from qualifying furnished accommodation in your home. GOV.UK
Do I need to declare Airbnb income?
Income from short-term letting can be taxable property or trading income depending on the circumstances. Using an online platform does not itself make the income tax-free.
Final thoughts
Receiving £1,500 a month in rent does not necessarily mean you’re taxed on the full £1,500.
But it also doesn’t mean you can simply deduct every cost associated with owning the property.
The correct calculation depends on the rental income, allowable expenses, available reliefs, finance costs and how the property is owned and used.
That makes good record keeping particularly important for landlords.
At Merranti Accounting, we can help landlords calculate their property income, identify relevant expenses and allowances, prepare their Self Assessment return and understand the tax implications of their property portfolio.
Written by Jack Smith MAAT
Senior Client Manager, Merranti Accounting
Jack is an AAT-qualified Senior Client Manager with more than 12 years’ experience supporting SMEs and owner-managed businesses. His work covers accounts, tax planning, management reporting, bookkeeping, VAT, forecasting and wider business advice.
