Buy to let tax usually covers four UK taxes: stamp duty land tax on purchase, income tax on rental profits, capital gains tax on sale, and corporation tax if you operate through a limited company. From April 2024, residential capital gains are taxed at 18% or 24%; from 2024 the SDLT surcharge for additional properties in England and Northern Ireland is 5%.
Individual landlords cannot deduct mortgage interest from rental income in full; most receive only 20% mortgage interest relief as a tax credit on finance costs. Furnished holiday lettings lost their special tax status from 6 April 2025, so most holiday lets now follow standard landlord tax rules.
Good records, allowable expenses and digital systems matter, especially as making tax digital starts for landlords with gross annual income from property over £50,000 from April 2026. Let’s guide you on every aspect of buy to let tax and how it can affect your financial planning.
How Buy to Let Tax Works in the UK?
If you own, or plan to buy, a rental property, buy to let tax can feel like a moving target. The reassurance is that landlords can reduce tax on rental income legally with proper planning, clear records and specialist tax advice.
This guide focuses on England and Northern Ireland, where stamp duty land tax applies. Scotland uses Land and Buildings Transaction Tax, and Wales uses Land Transaction Tax, each with its own surcharge regime.
For the 2025/26 and 2026/27 tax year, the main income tax thresholds remain: personal allowance £12,570, basic rate up to £50,270, higher rate to £125,140 and additional rate above that. The capital gains annual exemption is £3,000.
Buy to let tax rules have tightened since Section 24 in 2017, with more changes from April 2024 to 2027. The Tax Company provides landlord tax planning, Self Assessment support and buy to let compliance guidance for property investors.
Tax on Rental Income: How Your Buy to Let Profits Are Taxed
Rental income is taxable, but landlords pay income tax on rental profits, not total rent received. In simple terms:
rental income minus allowable expenses = taxable rental profit
Landlords must declare property income as part of their self assessment tax return. Tax rates are based on the landlord’s income tax band: 20% for basic rate taxpayers, 40% for higher-rate taxpayers and 45% for additional rate taxpayers pay on income above the additional-rate threshold.
Allowable expenses may include:
- letting agent fees
- landlord insurance
- service charges and ground rent
- council tax and utility bills paid by the landlord
- accountancy and professional fees
- legal fees for routine tenancy matters
- property repairs and maintenance
You cannot deduct mortgage capital repayments or improvements to the property from taxable rental income. Mortgage interest restrictions also prevent individual landlords from deducting mortgage interest from rental income to lower their tax bracket. Instead, they normally receive a 20% tax relief credit on mortgage interest costs and other finance costs.
From April 2027, tax rates on property income will increase by two percentage points, affecting buy-to-let landlords’ tax liabilities. In practice, landlords will pay more tax on their rental profits. These property income tax rates will make planning even more important as thresholds are frozen to 2031/32.
Where you own several properties, you usually combine UK rental income and direct costs across the same property rental business. Losses are generally carried forward against future rental profits only.
Claiming Allowable Expenses and Tax Reliefs
The key test is whether a cost is incurred “wholly and exclusively” for the rental business. A boiler repair is usually deductible. A personal laptop used mostly for family matters is not fully deductible, although a fair business apportionment may be possible.
Repairs are revenue expenses. Improvements are capital. Replacing broken roof tiles is normally deductible against tax on rental income. Building an extension is not, but it may reduce capital gains tax later.
Domestic items relief can apply when replacing furniture, appliances or furnishings in a residential property. You can usually claim tax relief for the cost of a like-for-like replacement, less any proceeds from selling the old item.
Keep invoices, bank statements, tenancy agreements and receipts for at least five years after the Self Assessment deadline. These records support allowable expenses, tax relief and your assessment tax return if HMRC asks questions about your buy to let tax in tax investigation.
Property Allowance and Small Landlords
The £1,000 property allowance can help small landlords. If your gross rental income is below £1,000 a year, no buy to let tax is usually due. If income exceeds £1,000, you choose either the allowance or actual allowable expenses, and some landlords also weigh this up alongside options like guaranteed rental income schemes that can stabilise cash flow.
The allowance can be useful where costs are very low. It is usually less helpful for a mortgaged rental property with repairs, insurance and agent fees. If HMRC issues a notice to file, you must still complete a self assessment return even if profits are low.
Stamp Duty Land Tax: Extra Costs When You Buy a Rental Property
Buying a buy-to-let property in the UK triggers significant tax liabilities. The buy to let tax is divided across four main stages: purchase, ongoing renting, ownership structures and ultimate sale. Stamp Duty Land Tax is payable when purchasing a buy-to-let property in the UK, with specific rates applicable to second properties, including buy-to-let and holiday lets.
When you buy an additional property to rent out, you must pay a surcharge on top of standard residential rates. In England and Northern Ireland, the Stamp Duty surcharge for additional properties, including buy-to-let, was increased to 5% in 2024, making the upfront cost of purchasing a rental property higher. Stamp Duty must be paid within 14 days of completion, although it is typically handled by the solicitor at completion.
Example: a £300,000 buy to let property bought in August 2025 by someone who already owns a home. The following amounts of buy to let tax will apply:
| Band | Rate with surcharge | SDLT |
| First £125,000 | 5% | £6,250 |
| £125,001 to £250,000 | 7% | £8,750 |
| £250,001 to £300,000 | 10% | £5,000 |
| Total | £20,000 | |
| Stamp duty paid on purchase can usually be added to the base cost when calculating capital gains tax on sale. |
What Is the 5% Buy to Let Stamp Duty Surcharge?
The 5% surcharge applies to most additional residential property purchases, including buy to let and second homes, if you already own another residential property anywhere in the world at completion.
The rates for Stamp Duty on buy to let properties are tiered, starting at 5% for the first £125,000, increasing to 17% for properties over £1,500,000. Non-UK residents face an extra 2% surcharge on top of these numbers. Surcharges vary if buying in Scotland through LBTT or Wales through LTT.
If you are replacing your main residence, you may reclaim the surcharge if the previous main home is sold within three years. Complex cases, such as joint purchases, mixed-use property or transfers into a limited company, should be checked for buy to let tax rules before completion.
Capital Gains Tax: When You Sell Your Buy to Let Property
When selling a buy-to-let property, you may need to pay Capital Gains Tax if you sell it for more than you paid for it, after deducting costs such as stamp duty and legal fees. It is an important part of your buy to let tax and must not be ignored.
Capital Gains Tax rates for residential property are 18% for basic-rate taxpayers and 24% for higher-rate taxpayers, applicable to gains above the annual allowance. For the 2025/2026 tax year, the annual tax-free allowance for capital gains is £3,000, meaning you only pay CGT on profits exceeding this amount. Allowable capital costs for this buy to let tax can include:
- purchase legal and conveyancing fees
- estate agent fees on sale
- solicitor fees
- stamp duty
- qualifying improvements, such as an extension or new kitchen
You can reduce your Capital Gains Tax liability by deducting certain expenses incurred during the sale of the property, such as solicitor fees and estate agent fees. UK residential property gains must usually be reported and paid within 60 days of completion. See HMRC guidance on Capital Gains Tax on UK property.
Reducing Capital Gains Tax on Buy to Let
You may reduce buy to let tax on sale by using both spouses’ allowances, timing disposals across different tax years, claiming historic capital losses and keeping full records of improvement works.
Private Residence Relief may apply to your buy to let tax if the property was once your main home. Lettings relief is now limited, but it can still matter in narrow cases. The Taxcom can model whether to hold, sell or restructure a portfolio before capital growth becomes a larger tax liability.
Limited Company vs Personal Ownership: Structuring Your Buy to Let
A common buy to let tax question is whether to hold property personally or through a limited company. Limited companies are not affected by the mortgage interest relief restriction that came into effect in April 2020, allowing them to fully deduct interest as a business expense against income.
Corporation Tax for limited companies is currently set at 19% for profits under £50,000, which is significantly lower than income tax rates for higher-rate taxpayers, which can be as high as 45%. Larger company profits may face a corporation tax rate of up to 25%, with marginal relief between the bands.
Limited companies can benefit from a more straightforward buy to let tax structure, as they are taxed on profits at a fixed rate, which can simplify financial planning compared to individual tax rates that vary based on income levels. However, company ownership brings accounts, corporation tax returns, Companies House filings and often more expensive mortgages.
Moving existing property owned personally into a company can trigger both stamp duty and capital gains tax. Get advice about your buy to let tax before acting.
Tax on Extracting Profits from a Limited Company
Landlords can extract company profits through salary, dividends or director’s loans. Each has different tax rules. When profits are extracted from a limited company, they can be taken as dividends, which are taxed at lower rates of buy to let tax as compared to income tax, although the first £500 of dividend income is tax free for the tax year 2025/26.
A company can improve tax efficiency where profits are reinvested. If you need all cash personally each year, dividend tax can increase the overall tax burden. A bespoke comparison is essential.
Furnished Holiday Lets and Short-Term Rentals
Furnished holiday lettings previously had valuable tax benefits, including capital allowances, more generous finance cost treatment and some CGT reliefs.
The government has abolished the special tax status for Furnished Holiday Lettings from April 2025, aligning their taxation with that of regular buy to let properties. From 6 April 2025, most Airbnb-style short lets and holiday homes face buy to let tax under standard residential landlord tax rules.
That means income tax purposes, finance costs, capital allowances and capital gains rules now need reviewing. Owners of former FHL portfolios should urgently check transitional rules and disposal timing for their buy to let tax.
Making Tax Digital and Record Keeping for Landlords
Making Tax Digital for Income Tax Self Assessment will become mandatory for landlords with a gross annual income from property over £50,000 starting April 2026. The threshold falls to £30,000 in 2027 and is expected to reach £20,000 in 2028.
Landlords will need MTD-compatible software, digital records and quarterly updates to HMRC about their buy to let tax, plus a final end-of-year declaration rather than relying only on a traditional self assessment tax return. HMRC explains the rollout in its Making Tax Digital guidance. Keep records of rent, repair receipts, insurance, bank statements, invoices and tenancy agreements.
Other Buy to Let Tax Considerations: Inheritance Tax, Joint Ownership and Losses
A buy to let property forms part of your estate for inheritance tax. The standard nil-rate band is £325,000, or up to £650,000 for married couples and civil partners before considering other reliefs. Some estates may pay inheritance tax if property values and other assets exceed available allowances.
Joint ownership affects how rental profits, allowable expenses and capital gains are split. Spouses and civil partners are often taxed 50/50 unless a different beneficial ownership position is properly declared.
If expenses exceed rent, losses are usually carried forward against future profits of the same UK rental business. Uncommercial lets, such as below-market rent to family, can restrict expenses and loss relief.
How The Taxcom Helps Landlords with Buy to Let Tax
The Taxcom supports landlords with buy to let tax advice, landlord Self Assessment returns, CGT calculations, ownership structuring and compliance planning. It includes comparing personal ownership with a limited company, modelling mortgage interest changes and reviewing allowable expenses.
Our tax experts advise individual landlords, portfolio investors and property businesses locally and nationally. Proactive planning can improve after-tax rental profits, protect cash flow and reduce HMRC penalty risk. Request a consultation with The Taxcom to review your buy to let tax position before your next purchase, refinance or sale.
FAQs about Buy to Let Tax
How much tax do landlords pay on rental income in 2026/27?
Landlords pay income tax at their marginal rate: 20%, 40% or 45%. For example, £10,000 taxable rental profit may cost a basic-rate landlord £2,000 before mortgage interest tax credit. A higher-rate landlord may face £4,000 before the credit. National insurance contributions are not normally paid on rental income under current rules.
From April 2027, tax rates on rental income increase by 2 percentage points, so tax on rental becomes more expensive.
Can I offset my buy to let mortgage interest against other income?
No. Since Section 24, individual landlords cannot offset mortgage interest against rental income or salary to reduce taxable income. Instead, they usually receive a 20% tax credit on finance costs. Companies can normally deduct mortgage interest as a business expense and pay corporation tax on the resulting taxable profit.
Do I have to register for Self Assessment if my rental income is small?
Usually, you must contact HMRC if rental income exceeds £1,000 or if you have taxable rental profit to report. Registration is generally due by 5 October after the tax year in which you first receive taxable rent. If HMRC sends a notice to file, you must submit the return.
Is there any way to legally reduce my overall buy to let tax bill?
Yes. Common strategies include claiming all allowable expenses, planning ownership between spouses, considering a limited company, timing disposals, using capital losses and keeping strong records. There are no safe “loopholes” to avoid landlord tax entirely, but compliant planning can reduce more tax than many landlords expect. Speak to The Tax Company for tailored tax advice before making major portfolio decisions.