UK Landlord Tax Guide 2025/26: Complete Breakdown

Understanding how rental income is taxed in the UK is essential for every landlord. The 2025/26 tax year (6 April 2025 to 5 April 2026) brings continued changes that affect how much tax you pay, what expenses you can claim, and how you report your income to HMRC.

Whether you own a single buy-to-let or a portfolio of properties, getting your tax right can save you thousands of pounds each year. Getting it wrong can result in penalties, interest charges, and unexpected tax bills.

This comprehensive guide covers everything UK landlords need to know about tax for the 2025/26 tax year: income tax bands, how rental income is taxed, allowable expenses, Section 24 mortgage interest restrictions, Self Assessment deadlines, payment on account, and the upcoming transition to Making Tax Digital. Latch helps you track every penny of income and expenditure so your tax return is accurate and complete.

How Rental Income Is Taxed in 2025/26

Rental income from UK property is added to your other taxable income (employment, pensions, savings, dividends) and taxed at your marginal income tax rate. This means the more you earn from all sources combined, the higher the rate of tax on your rental profits.

You are taxed on your net rental profit, not your gross rental income. Net rental profit is calculated as total rent received minus allowable expenses. Keeping accurate records of every allowable expense is therefore critical to reducing your tax bill.

Income Tax Bands and Rates for 2025/26

The income tax bands for the 2025/26 tax year in England and Northern Ireland are as follows:

Scotland has different income tax bands and rates. Scottish taxpayers pay the Scottish Rate of Income Tax on non-savings, non-dividend income including rental profits:

Calculating Your Rental Profit

Your taxable rental profit is calculated using a straightforward formula:

For example, if you receive £18,000 in rent during the tax year and have £6,500 in allowable expenses, your taxable rental profit is £11,500. If your employment income uses up your Personal Allowance, this £11,500 is taxed at your marginal rate.

Worked Example

Using Latch to track all your income and expenses by property ensures that no allowable deduction is missed, potentially saving you hundreds or thousands of pounds in tax.

Allowable Expenses Overview

HMRC allows landlords to deduct a wide range of expenses from rental income before calculating taxable profit. The key rule is that expenses must be wholly and exclusively for the purpose of renting out the property.

The main categories of allowable expenses include:

• Letting agent fees and management costs
• Insurance — landlord buildings and contents insurance, rent guarantee insurance
• Repairs and maintenance — like-for-like repairs to the property (not improvements)
• Legal and professional fees — tenancy agreements, eviction costs, accountancy fees
• Utility bills during void periods
• Council tax during void periods
• Ground rent and service charges for leasehold properties
• Travel costs to inspect or maintain your rental properties
• Advertising costs for finding new tenants
• Office and stationery costs

Section 24: Mortgage Interest Restriction

Since April 2020, individual landlords can no longer deduct mortgage interest payments as an expense from rental income. Instead, you receive a basic rate (20%) tax credit on your finance costs. This is known as Section 24 or the tenant tax.

This means if you are a higher rate (40%) or additional rate (45%) taxpayer, you are effectively paying more tax on your rental income than before Section 24 was introduced. The restriction does not apply to limited companies.

How the Tax Credit Works

Under Section 24, you calculate your rental profit without deducting mortgage interest. You then receive a 20% tax credit on the total mortgage interest paid.

The Personal Allowance and Rental Income

Every UK taxpayer has a Personal Allowance of £12,570 for 2025/26. This is the amount of income you can receive tax-free. If your only income is from property and your net rental profit is below £12,570, you will pay no income tax.

However, if you also have employment income, pension income, or other taxable income that already uses up your Personal Allowance, your entire rental profit will be taxed at your marginal rate.

Remember the Personal Allowance taper: for every £2 of income above £100,000, your Personal Allowance is reduced by £1. If your total income exceeds £125,140, you have no Personal Allowance at all.

Payment on Account

If your Self Assessment tax bill exceeds £1,000 (after deducting tax already collected at source), HMRC requires you to make payments on account. These are advance payments towards next year's tax bill.

Each payment on account is 50% of the previous year's tax bill. They are due on:

You can apply to reduce your payments on account if you expect your income to be lower in the current year. However, if you reduce them too much and underpay, HMRC will charge interest on the shortfall.

Self Assessment Deadlines for 2025/26

Missing a Self Assessment deadline results in automatic penalties. Here are the key dates for the 2025/26 tax year:

Making Tax Digital Transition

From April 2026, Making Tax Digital for Income Tax Self Assessment (MTD for ITSA) becomes mandatory for landlords with gross property income over £50,000. From April 2027, the threshold drops to £30,000.

Under MTD, you must:

• Keep digital records using MTD-compatible software
• Submit quarterly updates to HMRC (instead of a single annual return)
• Make a final declaration after the end of the tax year
• Maintain digital links between your records and HMRC submissions

Latch is fully MTD-compatible and recognised by HMRC. If you start using Latch now to track your 2025/26 income and expenses, you will be fully prepared for the MTD transition and have a complete digital record of your property finances.

Record Keeping Requirements

HMRC requires landlords to keep records for at least 5 years after the 31 January submission deadline for the relevant tax year. For the 2025/26 tax year, this means keeping records until at least 31 January 2033.

You must retain:

• Records of all rental income received, including dates and amounts
• Receipts and invoices for all expenses claimed
• Bank statements showing property-related transactions
• Mortgage statements showing interest paid
• Letting agent statements
• Tenancy agreements and lease documents
• Records of any property purchases, sales, or improvements

Latch stores all your financial records digitally and indefinitely, so you never need to worry about losing a receipt or missing a record during an HMRC enquiry.

Property Income Allowance

If your gross rental income is less than £1,000 in a tax year, it is completely tax-free under the property income allowance. You do not need to register for Self Assessment or report this income.

If your gross income exceeds £1,000, you can choose to either:

• Deduct the £1,000 property income allowance instead of actual expenses (useful if expenses are minimal)
• Deduct your actual allowable expenses (usually better if expenses exceed £1,000)

You cannot use both the property income allowance and claim actual expenses. For most landlords with mortgages, insurance, and maintenance costs, claiming actual expenses produces a lower tax bill.

Losses from Rental Property

If your allowable expenses exceed your rental income, you have a rental loss. Rental losses can be carried forward indefinitely and set against future rental profits from UK property.

However, rental losses cannot be set against other income such as employment income or pension income. They can only reduce future property income.

Tax Planning Tips for 2025/26

Here are practical steps every landlord should consider for the 2025/26 tax year:

1. Claim every allowable expense: Review our complete allowable expenses guide to ensure you are not missing any deductions.
2. Time your expenses: If you are close to a tax band threshold, bringing forward or deferring expenses could reduce your overall tax bill.
3. Use your spouse's allowance: If your spouse is a non-taxpayer or basic rate taxpayer, transferring property ownership can reduce the household tax bill.
4. Consider incorporation: If Section 24 is significantly increasing your tax bill, assess whether a limited company structure would be beneficial.
5. Maximise pension contributions: Pension contributions reduce your taxable income, potentially bringing you into a lower tax band.
6. Keep meticulous records: Use Latch to record every transaction as it happens, not at year-end when memories fade and receipts are lost.
7. Review payment on account: If your rental income has dropped, apply to reduce your payments on account to improve cash flow.
8. Plan for MTD: Start keeping digital records now to be ready for the April 2026 MTD deadline.