Rental Income Tax Calculator
Calculate tax on rental income for UK landlords in 2025/26. Applies Section 24 mortgage interest rules.
Calculation Breakdown
| Item | Amount | Notes |
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Enter your rental income and expense details above to calculate your landlord tax liability.
Rental Income Tax Calculator UK 2025/26
Use our free Rental Income Tax Calculator to calculate exactly how much tax you’ll pay as a UK landlord. This tool applies the latest 2025/26 tax rates, accounts for Section 24 mortgage interest rules, and shows your net rental profit after all deductions.
What Tax Do Landlords Pay?
UK landlords pay Income Tax on their rental profits, not the full rental income. Your taxable profit is calculated as:
- Rental Income: Total rent received from all properties
- Minus Allowable Expenses: Repairs, insurance, management fees, etc.
- = Taxable Profit: This is what’s taxed at your marginal rate
- Plus Mortgage Interest Relief: 20% tax credit (not full deduction)
Important: Since April 2020, mortgage interest is not deductible from rental income. Instead, you receive a 20% tax credit on mortgage interest payments. This significantly impacts higher-rate taxpayers.
Income Tax Rates for Landlords 2025/26
| Income Band | Tax Rate | Annual Income Range |
|---|---|---|
| Personal Allowance | 0% | £0 – £12,570 |
| Basic Rate | 20% | £12,571 – £50,270 |
| Higher Rate | 40% | £50,271 – £125,140 |
| Additional Rate | 45% | Over £125,140 |
Note: Your personal allowance reduces by £1 for every £2 earned over £100,000. It’s completely eliminated at £125,140 income.
Allowable Deductions for Rental Properties
You can deduct these costs from your rental income to reduce your taxable profit:
- Maintenance and repairs: Fixing things, replacing broken items (not improvements)
- Utilities: Water, electricity, gas (if you pay them)
- Insurance: Landlord insurance policies
- Management fees: Letting agent fees, property management costs
- Gardening and cleaning: Garden maintenance, communal area cleaning
- Services: Wages for staff like cleaners or gardeners
- Office costs: Stationery, phone bills, advertising for tenants
- Accountancy fees: Tax preparation and bookkeeping
- Legal fees: Professional fees up to 1 year for new tenancies
- Vehicle costs: Travel for property viewing or maintenance
You cannot deduct: Capital expenditures (buying furniture, extensions), mortgage capital repayments, personal expenses, or general maintenance that increases value.
Section 24 Mortgage Interest Rules
Since April 2020, landlords have lost the ability to deduct mortgage interest from rental income. Here’s how it works now:
| Taxpayer Type | Old System (pre-2020) | Current System |
|---|---|---|
| Basic Rate (20%) | Full deduction at 20% | 20% tax credit (same result) |
| Higher Rate (40%) | Full deduction saves 40% | Only 20% tax credit (worse) |
| Additional Rate (45%) | Full deduction saves 45% | Only 20% tax credit (much worse) |
Impact: A higher-rate landlord with £10,000 mortgage interest previously saved £4,000 in tax. Now they only get £2,000 credit — an extra £2,000 tax bill.
Property Allowance (£1,000)
If your total rental income from all properties is £1,000 or less per year, you don’t need to report it to HMRC or pay tax on it. This is called the Property Allowance.
You can choose to:
- Use the allowance and declare nothing (simplest option)
- Declare actual profit instead (beneficial if your expenses exceed £1,000)
This is ideal for landlords with occasional room rentals or very small-scale letting operations.
Joint Ownership and Spousal Transfer
If you own property jointly with your spouse or civil partner, you must split rental income according to ownership percentages (usually 50:50 unless documented otherwise).
Advantage: You can transfer ownership to equalise income between spouses, potentially reducing overall tax. This is done via a deed of gift and doesn’t trigger Capital Gains Tax between spouses.
Reporting to HMRC
All landlords must report rental income through Self Assessment if:
- Your gross rental income exceeds £1,000 per year
- You want to claim allowable expenses (even if under £1,000)
- You receive rental income from overseas properties
Deadlines:
| Action | Deadline |
|---|---|
| Register for Self Assessment | 5 October after tax year end |
| File paper tax return | 31 October after tax year end |
| File online tax return | 31 January after tax year end |
| Pay tax owed | 31 January after tax year end |
Furnished Holiday Lettings (FHL)
Furnished holiday lettings used to receive special tax treatment, but as of April 2025, many reliefs have been removed. FHLs are now treated more like standard residential lets for most purposes.
What still applies:
- Mortgage interest tax credit at 20%
- Must meet occupancy thresholds (105 days available, 70 days let, 14 days average)
Capital Gains Tax on Property Sale
When you sell a rental property, you may also owe Capital Gains Tax. Use our separate CGT Calculator to estimate this liability.
Rental properties don’t qualify for Private Residence Relief. You’ll pay 18% (basic rate) or 24% (higher rate) on gains after deductions and the £3,000 annual exemption.
Worked Examples
Example 1: Basic Rate Landlord
Salary: £30,000. Rental income: £15,000. Mortgage interest: £5,000. Expenses: £2,000.
Property profit = £15,000 – £2,000 = £13,000. Total income = £43,000. All within basic rate band. Tax = (£13,000 × 20%) – (£5,000 × 20%) = £2,600 – £1,000 = £1,600.
Example 2: Higher Rate Landlord
Salary: £45,000. Rental income: £25,000. Mortgage interest: £8,000. Expenses: £3,000.
Property profit = £25,000 – £3,000 = £22,000. Total income = £67,000 (higher rate). Tax on first £5,270 = £1,054. Tax on remaining £16,730 = £6,692. Mortgage credit = £1,600. Total tax = £6,146.
Example 3: Additional Rate Landlord
Salary: £120,000. Rental income: £20,000. Mortgage interest: £6,000. Expenses: £2,000.
Property profit = £20,000 – £2,000 = £18,000. Total income = £138,000 (additional rate). Large portion taxed at 40%-45%. Mortgage credit only £1,200 despite £6,000 interest.
Tax Planning Strategies
Increase Allowable Expenses
Keep detailed records of all deductible costs. Upgrade from basic repairs to proper maintenance documentation. Consider professional inventory checks and depreciation schedules for furniture.
Transfer Property to Lower-Earning Spouse
If one spouse has unused personal allowance or lower income, transferring legal ownership can shift rental income to a lower tax bracket. This is a capital transaction but no CGT between spouses.
Consider Limited Company Structure
Some landlords incorporate to benefit from Corporation Tax rates (currently 19%-25%). Companies can fully deduct mortgage interest. Consider stamp duty, exit taxes, and withdrawal implications.
Accelerate Capital Allowances
For furnished lettings, claim capital allowances on furniture and equipment. Annual Investment Allowance gives 100% first-year relief on qualifying expenditure up to £1 million.
Frequently Asked Questions
Do I pay National Insurance on rental income?
Generally no. Rental income is subject to Income Tax only. However, if HMRC considers your activities a “trade” (very active letting business), you might owe Class 2 and Class 4 NICs.
Can I offset losses from one property against another?
Yes. All rental income and expenses are pooled together. Losses from Property A can offset profits from Property B. Remaining losses carry forward to future years.
What counts as a repair vs improvement?
Reparations restore something to original condition (fixing a leak, repainting). Improvements enhance beyond original state (new kitchen, extension). Only repairs are deductible; improvements are capital costs.
How does rent-a-room relief work?
If you rent a room in your main home, you get £7,500 annual tax-free allowance (2025/26). Above that, you can choose to pay tax on actual profit or the excess over £7,500 — whichever is lower.
What happens if I forget to declare rental income?
HMRC receives data from banks, estate agents, and letting agencies. Late filing penalties start at £100 immediately after the deadline, increasing to £10/day after 3 months, £300 after 6 months, and more after 12 months.
Can I claim the property allowance instead of actual expenses?
Yes, if your gross rental income is between £1,000 and £5,000, you can choose the £1,000 allowance instead of tracking actual expenses. If your expenses exceed £1,000, claim actual costs instead.
Do foreign landlords pay different tax rates?
No. Non-resident landlords pay the same UK Income Tax rates. However, HMRC requires letting agents and tenants to withhold tax at 20% unless you register for the Non-Resident Landlord Scheme and receive approval.
What about Airbnb and short-term lets?
Airbnb income is treated as rental income if it’s sporadic. Frequent short-term lets may be considered trading (subject to different rules). Keep careful records and consider the distinction between occasional and habitual letting.
Related Calculators
- → Mortgage Calculator — Calculate buy-to-let mortgage affordability
- → Capital Gains Tax Calculator — Estimate CGT when selling rental property
- → Stamp Duty Calculator — Calculate SDLT including 3% surcharge on additional properties
- → Income Tax & NI Calculator — See how rental income affects your total tax position