A Plain-English Guide to Property Finances, Tax Relief and Keeping HMRC Happy
Getting your landlord accounting right directly affects your tax liability. Income tax and National Insurance are charged on your rental profit — rent received minus allowable expenses, so every cost you record and claim correctly reduces your tax bill. This guide covers what income to declare, which expenses provide tax relief, how to keep financial records, and what Making Tax Digital means for rental properties.
Landlord Accounting at a Glance
- Income tax is charged on rental profit — rent received minus allowable expenses
- Report rental properties on a Self Assessment tax return each year using the SA105 pages
- Register by 5 October after your first tax year of receiving rental income
- Mortgage interest: you get a 20% income tax credit
- Keep financial records for at least 5 years after the 31 January filing deadline
- Making Tax Digital is mandatory for landlords with gross income over £50,000 from April 2026
Individual Landlord or Limited Company?
Most UK landlords own rental properties in their own name and pay income tax on the profits. Corporation tax does not apply to individual landlords — it only becomes relevant if you hold properties through a limited company structure.
Owning through a limited company can reduce the overall tax liability for some higher-rate taxpayers: corporation tax rates are currently lower than higher-rate income tax, and mortgage interest remains fully deductible for a company, restoring the tax relief lost under Section 24. However, the property’s finances become more complex: you’ll need company accounts, Corporation Tax returns, and filings with Companies House. Extracting profit as salary or dividends also carries its own income tax implications, and the tax laws that govern a limited company are entirely different to those for an individual. Take professional advice before restructuring your property finances this way.
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This guide covers accounting for individual landlords. If you hold properties through a limited company, you’ll need a company accountant for advice.
What Counts as Rental Income?
Your rental income includes everything tenants pay in connection with the tenancy, not just the monthly rent. This covers admin fees, payments for services bundled into the rental price, income from parking or storage alongside the rental properties, and insurance payouts received in lieu of lost rent. Security deposits held in a tenancy deposit scheme are not taxable income unless you retain them; the amount you keep then becomes part of your rental income in that tax year.
The £1,000 Property Allowance
The £1,000 property allowance is a tax-free allowance for small amounts of rental income. If your total property income is £1,000 or less in a tax year, you usually do not need to declare it or register for Self Assessment. If your property income is more than £1,000, you have two options:
- Claim the £1,000 property allowance and pay tax on the remaining income.
- Claim your actual expenses instead.
You cannot claim both.
If your actual expenses are more than £1,000, claiming the real expenses will usually reduce your tax bill more than using the allowance.
Allowable Expenses — How to Reduce Your Taxable Income
Allowable expenses reduce your rental income and, therefore, your income tax bill. HMRC requires that costs are incurred ‘wholly and exclusively’ for the rental business. The table below covers the key expenses landlords claim across rental properties:
Expense | What You Can Claim |
|---|---|
Letting agent and management fees | Tenant-find, rent collection, and full management fees are all allowable. Typical rates run from 6–18% of rental income, depending on the level of service. |
Repairs and maintenance | Restoring the property to its original condition, fixing a boiler, repairing a leaking roof, replacing a broken window, and repainting worn walls. Allowable in full in the year the work is paid for. Improvements that enhance the property beyond its original state, like a new extension, a loft conversion, or a significantly upgraded kitchen, are capital costs, not deductible expenses. They may, however, reduce your Capital Gains Tax liability when you eventually sell. |
Landlord insurance | Buildings, contents (for furnished lets), rent guarantee, and public liability insurance are all deductible property finance costs. |
Mortgage interest — Section 24 | Not a direct expense deduction, you receive a 20% basic rate income tax credit on the interest paid. See details below. |
Accountant and professional fees | The cost of an accountant to prepare your SA return, prepare landlord accounts, or advise on your property finances is fully deductible. Typically £150–£500 per year for a straightforward landlord return, more for complex portfolios. |
Safety certificates and compliance | Annual Gas Safety Certificates (legally required for every tenancy), Electrical Installation Condition Reports (EICRs, required every five years), and PAT testing for electrical appliances in furnished lets are all allowable costs. |
Advertising and legal fees | Tenant-finding costs, online listing fees, tenancy agreement drafting, referencing charges, and the legal costs of eviction proceedings are all deductible. Legal costs for buying or selling a property are capital costs, not allowable expenses |
Travel to rental properties | Mileage for visits to inspect, carry out maintenance, meet contractors, or manage rental properties is claimed at the HMRC-approved rate of 45p per mile for the first 10,000 miles, 25p thereafter. Keep a mileage log for every trip, including the date, destination, purpose, and miles covered. |
Property management software | Accounting software and property management tools used to maintain your records and manage rental properties are deductible business costs. |
Replacement of domestic items | Replacing a like-for-like domestic item in a furnished let — a washing machine, sofa, or bed of equivalent standard. The original purchase of furnishings when you first let the property does not qualify. |
Ground rent and service charges | If you own a leasehold property, ground rent and any service charges paid to the freeholder or management company are allowable expenses. Keep annual statements as evidence. |
⚠️ Section 24 — Mortgage Interest Tax Relief
Mortgage interest is not a direct expense deduction. You receive a 20% basic rate income tax credit on the interest paid instead. For basic-rate taxpayers, this doesn’t make much difference, but for higher-rate taxpayers, it increases the overall tax liability.
Example for 40% tax: £15,000 rental income, £8,000 mortgage interest: Income tax at £15,000 @ 40% = £6,000, less 20% credit (£1,600) = net tax bill of £4,400. If rental income pushes you into a higher tax band, it is worth seeking professional advice.
Financial Records — What You Need to Keep
Accurate records are the foundation of landlord accounting and your evidence if HMRC ever queries your Self Assessment tax return. Good records also mean you capture every allowable expense, keeping your income tax bill as low as it should be. For every payment received, record the date, amount, tenant name, property address, rental period covered, and method of payment. Issue a rent receipt for every payment — this is especially important for cash, where a receipt is the only evidence that money changed hands.
Free Excel Rent Receipt Template
Download our free landlord rent receipt templates in Excel, Word, and PDF — including a Rent Receipt Log for tracking all payments across rental properties, with columns for date due, date received, amount, and outstanding balance.
For expenses, record the date paid, amount, supplier name, description of the work, and which property it relates to. A phone photo of a paper receipt counts as evidence. Also maintain:
- Bank statements from a dedicated rental account — the cleanest basis for records
- Tenancy agreements and monthly letting agent statements
- Annual mortgage statements showing the interest paid (used for the Section 24 tax relief calculation)
- Insurance documents, safety certificates, and compliance records
Keep all financial records for at least five years after the 31 January filing deadline for the relevant tax year. For the 2025/26 Self Assessment tax return (due 31 January 2027), that means retaining records until at least January 2032. HMRC can open an enquiry into an SA return at any point within that window, so do not discard records early. Many landlords keep six years of records to be safe.
Choosing Accounting Software for Your Rental Properties
A spreadsheet works fine for one or two properties with simple finances, but as your portfolio grows, or as Making Tax Digital makes digital records mandatory, accounting software becomes genuinely worthwhile. There are two broad categories to consider: general accounting platforms adapted for landlords, and specialist landlord software built specifically for property management.
Free Cash Book Template
For one or two properties with simple finances, our free Excel Cash Book Template is all you need. Set up your income categories (rent received, any other charges) and expense categories to match the SA105 allowable expense headings, letting agent fees, repairs, insurance, mortgage interest, safety certificates, and so on. Each transaction is logged with a date, description, amount, and category, and the totals page produces your full-year income and expenditure figures ready for your Self Assessment tax return.
General Accounting Software
Platforms like Sage UK, Xero or QuickBooks are not designed exclusively for landlords, but they handle rental income and expense tracking well and are all MTD-compatible. Their strengths are bank feeds, solid receipt capture via mobile apps, and widespread familiarity among accountants. If you use a bookkeeper or accountant, they are likely already set up on one of these platforms, which simplifies collaboration. The limitation is that they have no concept of tenancies, rent schedules, or compliance certificates — you are adapting a business accounting tool to a lettings context rather than using something purpose-built.
Accounting Software Best Deals
Sage UK – 90% Discount for 6 Months – FREE plan for Sole-Traders, AI tools for bookkeeping automation
XERO – 95% Discount for 6 Months – Cloud accounting, unlimited users, smart bank feeds
QuickBooks – 90% Discount for 7 Months – Invoicing, expense tracking, payroll, financial reports
Specialist Landlord Software
Landlord-specific platforms like Landlord Vision combine property management and accounting into a single system. As well as tracking income and expenses, they manage tenancy dates, rent schedules, compliance certificate reminders, maintenance logs, and, in some cases, document storage and tenant portals. If you have three or more properties, or find yourself tracking renewal dates and certificate expiries across multiple tenancies, the extra features start to justify the additional cost.
What to look for in specialist landlord software: MTD compatibility (confirmed on HMRC’s recognised software list), property-level income and expense reporting (so you can see profit per property, not just overall), bank feed integration, mobile receipt capture, and the ability to grant access to your accountant. Pricing typically runs from around £4 to £20 per month, depending on portfolio size and feature level. Most offer a free trial, so it is worth testing two or three before committing.
💡 General accounting software vs specialist landlord software — which is right for you?
General accounting software (Sage UK, Xero or QuickBooks): good choice if you have one or two properties, already use one of these platforms for a separate business.
Specialist landlord software: worth considering if you have three or more properties, want compliance reminders (Gas Safety, EICR renewal dates) or want a single system that handles both the business side and the property management side.
For MTD purposes, both types are suitable — check the HMRC recognised software list to confirm any platform you are considering is approved before subscribing.
Legal Record Keeping for Landlords
Landlord record-keeping goes beyond HMRC. There is a separate set of legal documents you are required to hold, provide to tenants, and keep on file. Failing to produce these when needed can prevent you from evicting a tenant or result in fines of up to £40,000. Idealy keep all paperwork for 7 years after the end of the tenancy.
| Document | What You Must Keep |
| Gas Safety Certificate | Annual inspection by a Gas Safe engineer. Give a copy to tenants within 28 days of the check, and to new tenants before they move in. |
| Electrical Installation Condition Report (EICR) | Required every 5 years. Provide a copy to new tenants before move-in and to existing tenants within 28 days of the inspection. |
| Right to Rent records | Copy of identity documents checked for every adult occupier. |
| Deposit protection records | Evidence that the deposit was protected in an approved scheme within 30 days, and that the prescribed information was given to the tenant. |
| Tenancy agreements | Signed copy of every tenancy agreement. |
| Check-in inventory | Not legally required, but essential for defending any deposit deduction at tribunal. Must be signed by the tenant on move-in day. |
| How to Rent guide | You must provide the current government version to tenants at the start of every tenancy in England. Keep a record of the date provided and the version. |
| GDPR / ICO registration | As a landlord, you process tenant personal data and are a data controller. Register with the ICO and pay the annual data protection fee (currently £40 for most small landlords). Keep a record of your registration and your privacy notice given to tenants. |
Filing Your Self-Assessment Tax Return
Rental income is reported on the SA105 (Property) supplementary pages of your return. If this is your first year of receiving rental income, register for Self Assessment by 5 October after the end of that tax year. HMRC will issue a Unique Taxpayer Reference (UTR) by post.
The SA105 asks for total rental income, allowable expenses by category, the mortgage interest figure for the Section 24 tax relief calculation, and any losses brought forward. HMRC’s online system calculates your income tax liability automatically as you enter figures.
Here are the important dates for HMRC:
| Deadline | What It Is |
| 5 October | Register for Self Assessment if receiving rental income for the first time |
| 31 October | Paper Self Assessment return deadline |
| 31 January | Online SA return deadline AND income tax payment deadline |
| 31 July | Second payment on account towards tax bill (if applicable) |
Read our guide on the self-assessment tax return for more details.
Cash basis vs accruals — which accounting method should you use?
Most landlords with annual rental income below £150,000 use the cash basis: income is recorded when received and expenses when paid. This is simpler and means you only pay income tax on money actually received in the tax year — not on rent invoiced but not yet paid.
The accruals basis records income and expenses when earned or incurred, regardless of when cash changes hands. It is required for landlords with income above £150,000 or those who opt out of the cash basis. For most private landlords, the cash basis is the simpler default. You can opt out of your Self Assessment tax return if your circumstances require accruals. Find out more about cash vs accruals accounting.
Multiple Rental Properties
HMRC treats all your UK rental properties as a single property business. Profits and losses across all properties are combined into one net figure on your Self Assessment tax return; one set of SA105 pages covers all of them. Despite this, keep separate financial records per property for your own property finances management, Capital Gains Tax purposes on sale, and in case HMRC queries a specific address.
Overseas rental properties must be kept entirely separate. Their income and expenses cannot be combined with UK property finances; they’re reported on the SA106 (Foreign Income) pages instead.
Rent a Room Scheme — If You Let Part of Your Own Home
If you rent out a furnished room in your own home, the Rent a Room scheme provides tax relief of up to £7,500 per year — that amount of income is completely free from income tax with no Self Assessment tax return required. Above £7,500, you choose: pay income tax only on the excess (no expense deductions) or opt out and declare full income with full expense deductions — whichever produces the lower tax bill. This scheme only applies to your main residence; it does not apply to buy-to-let rental properties.
Making Tax Digital — What Landlords Need to Know
Making Tax Digital for Income Tax (MTD ITSA) replaces the annual Self Assessment tax return with quarterly digital reporting for landlords above the thresholds below. It’s the biggest change to landlord accounting and UK tax laws for rental properties in a generation.
| Start Date | Who is Affected |
| April 2026 | Landlords with gross qualifying income (rental properties plus any other trading income) over £50,000 |
| April 2027 | Landlords with gross qualifying income over £30,000 |
| Provisional date – April 2028 | Landlords with gross qualifying income over £20,000 |
Under MTD, you maintain digital records in approved software and submit four quarterly updates to HMRC per year, followed by a Final Declaration at year end. Your income tax liability and payment dates are unchanged — only the reporting process changes.
💡 Check whether MTD applies to you. Look at your gross rental income for 2024/25 before any expenses. If it exceeds £50,000, or if combined with other trading income, it crosses that figure, you need MTD-compatible software in place by 6 April 2026.
Landlord Accounting FAQ
Do I need to file a Self Assessment tax return if I made a loss?
Yes — if HMRC requires you to file, you must include your rental figures even if the result is a loss. Formally declaring the loss means you can carry it forward and offset it against future rental profits, reducing your income tax liability in later years.
Can I reduce my tax bill by holding rental properties in a limited company?
Potentially. Corporation tax rates are currently lower than higher-rate income tax, and mortgage interest is fully deductible for a limited company. However, running a limited company adds cost and complexity: company accounts, Corporation Tax returns, Companies House filings, and the income tax implications of extracting profit. Take professional advice before acting.
What if my rental property is empty for part of the year?
You can continue claiming expenses during void periods — insurance, mortgage interest, council tax if you’re paying it, provided the property is genuinely available to let and you’re actively marketing it. If you temporarily withdraw it from the market for personal use, expenses during that period are not allowable against your rental income.
Landlord Accounting Summary
Landlord accounting comes down to three things: keeping accurate records throughout the year, claiming every allowable expense to legitimately reduce your taxable income and income tax bill, and filing a Self Assessment tax return by the January deadline. Understand how Section 24 affects your tax relief on mortgage interest, consider whether a limited company structure could reduce your overall tax liability, and if your gross income from rental properties is approaching £50,000, start preparing for Making Tax Digital now.
Free Resources and Related Guides
Free Rent Receipt Template (Excel, Word, PDF)
Free Excel Cash Book Template — for tracking income and expenses across rental properties
Self Assessment Tax Return Guide — deadlines, penalties, and how to file
Making Tax Digital for Income Tax — full guide for landlords
Accounting Software Reviews — Xero, Sage, QuickBooks and more
