Accurately calculate your Buy-to-Let tax liability and Section 24 mortgage interest tax relief in seconds. Updated for the 2026/2027 UK tax year, this tool helps sole trader landlords estimate their after-tax rental yield.
Landlord & Buy-to-Let Calculator (2026/27)
Agency fees, insurance, repairs…
Only interest payments, not capital repayment.
How to calculate your Rental Income Tax
Getting an accurate tax estimate is simple, but inputs must be precise due to Section 24 rules. Here is how to calculate tax on rental income step by step:
- Enter your Annual Salary (Non-Property): We need this to determine your tax band (Basic, Higher, or Additional). Your rental income sits on top of your job salary when we calculate rental income tax.
- Input Rental Income: The total gross rent you receive from tenants before any deductions. This is the starting point for any rental income tax calculation UK.
- Deduct Allowable Expenses: Enter costs like agency fees, insurance, and repairs here — these are the landlord costs that directly reduce your taxable profit. Do not include your mortgage payments in this box.
- Mortgage Interest (Crucial): Enter your mortgage interest payments in the dedicated “Section 24” field. Since the rules were fully phased in from April 2020, this is no longer a tax-deductible expense but gives you a 20% tax credit instead. Our section 24 calculator handles this automatically.
What taxes do landlords pay in the UK?
As a landlord, you don’t pay a separate “landlord tax”. Instead, your rental profits are subject to Income Tax based on your total earnings. Understanding how much tax you pay on rental income depends on where that income sits across your total taxable income.
The “Stacking” Principle
HMRC doesn’t look at your income sources in isolation. Instead, they “stack” your rental income on top of your salary (or pension) to calculate your final tax bill. Your salary usually uses up your Personal Allowance and the lower tax bands first, leaving your rental income to be taxed at your highest marginal rate. This is the key to understanding your UK rental income tax marginal rate.
Here is how the UK rental income tax calculation actually works. Imagine your tax bands as buckets that fill up in order.
The Scenario: You earn £40,000 from your job and £15,000 in profit from property. Your total income is £55,000.
The Threshold: The Basic Rate (20%) band ends at £50,270.
Step-by-Step Breakdown:
- Salary (The Foundation): Your £40,000 salary uses up your tax-free Personal Allowance (£12,570) and fills up a large chunk of your Basic Rate band. You are currently a “Basic Rate Taxpayer”.
- The “Gap”: You still have £10,270 of space left in the Basic Rate band before you hit the £50,270 threshold (£50,270 – £40,000).
- Rental Income (The Top Layer): The first £10,270 of your rental profit fills that remaining gap. You pay 20% tax on this portion.
- The Tipping Point: The remaining £4,730 of your rental profit overflows into the Higher Rate band.
- The Result: You pay 40% tax on that final £4,730.
Why this matters: Even if your salary is relatively modest, your rental income can push you into the 40% tax bracket, significantly increasing your bill. This is why using a tax calculator with rental property income is critical — a standard salary tool will give you the wrong answer.
Buy-to-Let Tax Rates (2026/27)
Your rental profit is taxed at standard UK Income Tax rates. The rate you pay depends on your total taxable income (salary + rental profit) for the year. These are the rates our buy to let tax calculator applies:
| Tax Band | Total Annual Income | Tax Rate |
|---|---|---|
| Personal Allowance | Up to £12,570 | 0% |
| Basic Rate | £12,571 to £50,270 | 20% |
| Higher Rate | £50,271 to £125,140 | 40% |
| Additional Rate | Over £125,140 | 45% |
Upcoming Change: New Property Income Tax Rates from April 2027
From 6 April 2027, the UK government will introduce dedicated rental income tax rates specifically for property income, separate from employment income. This replaces the current stacking method where rental profit is taxed at your marginal income tax rate.
The new property-specific rates for 2027/28 are expected to be:
| Band | Rate |
|---|---|
| Property Basic Rate | 22% |
| Property Higher Rate | 42% |
| Property Additional Rate | 47% |
What this means for landlords: If you are currently a basic rate taxpayer relying on the 20% rate on rental profits, plan for a 2% increase from April 2027. Higher and additional rate taxpayers will also pay slightly more. Our landlord tax calculator will be updated when HMRC publishes final guidance. The Scottish Government will also have powers to set equivalent rates — see our tax on rental income Scotland calculator for Scottish-specific calculations.
Section 24: The “Tenant Tax”
Unlike other businesses, landlords cannot deduct mortgage interest from their revenue to lower their taxable profit. Instead, you pay tax on the full rental profit and receive a 20% tax credit on your mortgage interest costs. This often pushes landlords into higher tax bands, which is why using a dedicated section 24 tax calculator is essential for planning.
Our buy to let mortgage tax relief calculator shows you the precise impact: enter your mortgage interest in the dedicated field, and the tool applies the 20% credit against your final bill — not against your profit. This distinction is crucial for any accurate landlord profit calculator.
Types of Landlord: Which Calculator Applies to You?
Not all landlords are the same. Here is how different situations affect your calculation:
Accidental Landlord
If you inherited a property or moved in with a partner and kept your old home, you are likely an accidental landlord. The same income tax rules apply — rental profits stack on top of your salary. Use this tool as your accidental landlord tax calculator to estimate your liability before your Self Assessment deadline.
HMO Landlords (Houses in Multiple Occupation)
Running an HMO through a limited company changes your tax position significantly. A limited company pays Corporation Tax (19–25%) on profits rather than Income Tax. For an LLP HMO tax calculator or limited company HMO tax calculator, consult a specialist accountant, as the optimal structure depends on your portfolio size and personal income.
Holiday Let Landlords
Furnished Holiday Lets (FHLs) had a preferential tax regime — including full mortgage interest deductibility — which was abolished from 6 April 2025. From 2025/26 onwards, holiday lets are taxed like standard rental income. Use this page as your holiday let tax calculator and holiday let income calculator for 2026/27 figures.
Non-Resident Landlords
If you live abroad and rent out UK property, you fall under the Non-Resident Landlord Scheme. Tax is withheld at source by your letting agent unless you register with HMRC for gross payment. For a precise estimate, this tool provides a useful starting point as a non resident landlord tax calculator UK, but we recommend confirming your position with HMRC.
Allowable Expenses: What Can Landlords Deduct?
Knowing your buy to let expenses is essential to accurately calculate rental income after costs. You can deduct “wholly and exclusively” business costs, including:
- Letting agent and property management fees
- Landlord buildings and contents insurance
- Council tax and utility bills (if you pay them)
- Repairs and maintenance (e.g., fixing a boiler — not installing a new luxury kitchen, which is a capital improvement)
- Ground rent and service charges (leasehold properties)
- Accountancy fees for your Self Assessment return
- Advertising costs to find tenants
These are the core inputs for any landlord costs calculator UK or buy to let expenses calculator. Capital improvements (extensions, new kitchens, conversions) are not deductible as expenses but may reduce Capital Gains Tax when you sell.
The Let Property Campaign
If you have undeclared rental income from previous years, HMRC’s Let Property Campaign allows landlords to voluntarily disclose and pay outstanding tax, usually with reduced penalties. The penalty you face depends on whether HMRC classifies your non-disclosure as prompted or unprompted, and whether it is considered a mistake, careless, or deliberate. A let property campaign penalty calculator or let property campaign calculator can give you a rough estimate, but we strongly recommend engaging a tax adviser before making a disclosure.
Owning Property Through a Limited Company
Many landlords with larger portfolios consider incorporating. A BTL tax calculator for limited companies works differently: the company pays Corporation Tax on profits, and you extract income as salary or dividends — each taxed separately. A BTL profit calculator comparison between personal ownership and limited company structure depends on your total portfolio income, personal tax rate, and long-term plans. Use our standard buy to let income calculator for personal ownership, and speak to an accountant for the limited company comparison.
Annual Rental Value and Yield
Knowing your annual rental value helps you benchmark your property’s performance. Gross yield = (annual rent ÷ property value) × 100. Net yield deducts all costs and tax. Our tool functions as a landlord income tax calculator and a buy to let profit calculator UK combined — giving you net cash flow after all deductions in one place.
If you are asking yourself “how much rent can I get for my property?”, local lettings agents and Rightmove/Zoopla rental market data are the most reliable benchmarks. Once you have your rental income estimate, bring it into this calculator to see your net position.
FAQ: Taxes on Rental Income
How much rent can I earn tax-free?
You have a Property Allowance of £1,000 per year. If your gross rental income is under £1,000, you don’t need to report it. If it’s higher, you must declare it via Self Assessment. Note: you cannot claim both the £1,000 allowance and allowable expenses — choose whichever saves you more tax.
Can I deduct mortgage interest from rental income?
No. Under current Section 24 rules, mortgage interest is not a tax-deductible expense. Instead, you receive a basic rate relief (20% tax reducer) on your finance costs, regardless of whether you are a basic, higher or additional rate taxpayer. This is automatically handled in our buy to let income tax calculator.
How do I calculate tax on rental income?
Add your rental profit (income minus allowable expenses) to your other income. Apply the UK income tax bands to the total, then subtract the 20% Section 24 credit on your mortgage interest. Our tax calculator for rental income does all of this automatically — just enter your figures above.
Do I pay National Insurance on rental income?
Generally, no. Rental income is considered investment income, so Class 2/Class 4 NICs do not apply unless you are running a property business with extensive services (like a hotel or B&B) as your main occupation.
What is the UK rental income tax calculation for 2026?
For 2026/27, rental profits are taxed at 20%, 40%, or 45% depending on your total income — stacked on top of your employment income. Rates and thresholds are unchanged from 2025/26 for England, Wales and Northern Ireland. Use this UK rental income tax calculation 2026 tool for an instant estimate.
Does this work as a landlord mortgage calculator?
This tool calculates your tax liability and net profit. For mortgage affordability or rate comparisons, use a dedicated landlord mortgage calculator UK. The two tools complement each other: work out your net rental income here first, then use that figure as your input for mortgage stress tests.
CheckMyTax Rental Property Tax Calculator is updated for the 2026/27 tax year. Figures are estimates only and do not constitute financial or tax advice. For complex portfolios, incorporated structures, or undisclosed income, consult a qualified tax adviser or visit HMRC.gov.uk.
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