Completing A Landlord Tax Return: The Definitive Guide 

For any landlord, tax return season can be an intimidating time of year. Even more so, the final act of filing your tax return can often feel like performing the finale of an important show, trying your best not to make any mistakes. 

This is why we’ve put together this guide to walk you through the process of completing and filing a tax return for landlords. We cover the essentials; tips & tricks for simplifying the process, a step-by-step landlord tax return example that will demonstrate how to report your rental income and expenses, and the tools you need to make the process easier. 

By the end, you’ll have a full understanding of the requirements for filing your tax return, and all being well, it won’t seem so daunting after all.

Why Landlords Need to File a Tax Return

If you receive income for renting out property, you will need to report this income to HMRC on an annual basis. For landlords, a tax return ensures that rental profits are being taxed correctly and that nothing is slipping through the cracks. 

Particularly when managing multiple properties, the tax picture can quickly become messy, so a tax return ensures that everything is tied together neatly. 

Even if your rental income doesn’t exceed your personal allowance, it’s important to declare it to HMRC to avoid penalties and maintain compliance.

Failing to report rental income accurately can lead to fines and legal issues. Here are some classifications you need to know, that will help you stay in the clear:

• Taxable Rental Income: All payments from tenants. This includes rent, fees, and any other charges. 
• Allowable Expenses: You can deduct certain expenses incurred while managing your property, such as repairs and letting agent fees, from your taxable income.

How To Complete a Tax Return for Landlords

1. Gather Your Financial Records

Gather financial records before you begin to complete your tax return. Required documents include:

• Rental income statements/tenancy agreements.
• Receipts for allowable expenses such as utilities/repairs/insurance.
• Mortgage interest statements.
• Bank statements showing your rental activity. 

Accurate Record Keeping For an Easier Tax Time

Precise record-keeping is a must here if you want to avoid a headache further down the line. Consider using software like Landlord Studio to simplify these administrative processes. 

Landlord Studio is a powerful property management and accounting software designed by landlords for landlords. Track income and expenses using default expense categories in line with the HMRC requirements. Plus, reconcile transactions with a few quick clicks to ensure data accuracy, digitise receipts on the go, and instantly generate customizable reports (including a purpose-built P&L report) to quickly and easily dig down into the numbers.

Create your free Landlord Studio account today and make time easy.

2. Determine Your Taxable Income

To figure out your taxable rental income, you will need to subtract allowable expenses from your total rental income. Allowable expenses include:

• Property maintenance and repairs: eg. fixing a boiler or roofing. 
• Insurance: eg. landlord insurance premiums.
• Letting agent fees: eg. fees for tenant sourcing/management.
• Utilities and council tax: eg. if you are paying on behalf of a tenant.
• Legal and professional fees: eg. costs associated with lease agreements or tax advice.

It’s important to distinguish between repairs and improvements. Repairs are deductible but improvements (e.g., installing a swish new kitchen or conservatory) are not. All buy-to-let expenses need to be accurately tracked and recorded using your rental accounting software.

Related: Understanding The Replacement Of Domestic Items Relief

3. Fill Out The Tax Return

Landlords must use the Self Assessment system to report rental income. Landlord Studio can assist you with this by keeping all your income and expenses neat and tidy, ensuring you have everything you need to complete your return efficiently. 

You should file your return online using HMRC’s official website. If you’re filing for the first time, you’ll need to register for Self Assessment and obtain a Unique Taxpayer Reference (UTR).

Sections to Complete:

• Property Income: Rental income and allowable expenses. 
• Employment / Additional Income: Report on any additional income you receive. 
• Reliefs / Deductions: Give details of tax credits or deductions, like mortgage interest relief.

4. Submitting The Tax Return

Ensure you double-check all entries before submitting your tax return. Online submissions are due on the 31st January following the end of the tax year (e.g., for the 2022/23 tax year, the deadline is 31 January 2024). Missing the deadline can result in penalties. 

Landlord Tax Return Example

To better illustrate the process, here’s a landlord tax return example that breaks down how to file a tax return for landlords efficiently.

Scenario:

• Rental Income: £12,000 per year (£1,000 per month).
• Allowable Expenses:some text
  • Repairs: £1,500
  • Letting Agent Fees: £2,000
  • Insurance: £600
• Mortgage Interest: £4,000 (subject to 20% tax credit).

Steps:

1. Work Out Your Taxable Income
   • Rental Income: £12,000
   • Total Expenses: (£1,500 + £2,000 + £600) = £4,100
   • Taxable Profit Before Tax Credit: £12,000 - £4,100 = £7,900
2. Apply Mortgage Interest Tax Credit: 20% of £4,000 = £800 tax credit.‍
3. Final Tax Liability: Apply your tax rate (e.g., 20% for basic-rate taxpayers) to £7,900, then subtract the £800 tax credit.

Tax Tips for Landlords

1. Organise, Organise, Organise

Keep your financial records up-to-date, checking in on your progress regularly over the course of the year. Use software to automate tracking and reporting, reducing human error and saving yourself time in the process. 

2. Understand Mortgage Interest Relief

Since the last notable changes to mortgage interest relief, landlords are no longer able to deduct mortgage interest directly from rental income. Instead, you receive a 20% tax credit, which can have a significant impact on your tax liability if you’re a higher-rate taxpayer.

3. Consider Sourcing Professional Help 

If your tax affairs are long-winded, hiring a qualified accountant can save you heaps of time and ensure compliance. They can also advise on a range of strategies to reduce your final tax bill.

4. Explore The Possibility Of Incorporation

Operating as a limited company allows landlords to deduct full mortgage interest as a business expense. While this isn’t suitable for everyone, it’s worth exploring if you own multiple properties.

Final Words: Landlords, MTD and Self-Assessments

Filing a tax return for landlords doesn’t have to be stressful. By keeping organised and up to date on allowable expenses, and seeking professional advice where appropriate, you can remain compliant and minimise your tax liability. 

You may also find value in the HMRC property income guidance, a free government resource that can help you stay informed.  

Taxes are changing. With Making Tax Digital (MTD) being implemented from April 2026 for Income Tax, landlords earning above the £50,000 threshold need to be looking for a digital accounting solution for their buy-to-let properties now. MTD signals a major change to how the HMRC will expect landlords to submit their taxes, requiring you to keep digital records and submit quarterly returns. Learn more about how you can prepare for MTD here.

With Landlord Studio, you can easily simplify your financial tracking and tax compliance. The app comes packed full of useful reporting tools that are designed to streamline financial and accounting processes for landlords so that you can spend less time worrying about the boring stuff! Plus, we’ll be MTD compliant before the 2026 deadline.

Create your free Landlord Studio account today and find out how Landlord Studio can help you streamline and simplify your rental income tracking and self-assessment.

You Might Also Like

• 7 Costly Mistakes Landlords Make On Their Self-Assessment
• Do I Pay Tax on Rental Income If I Have a Mortgage? 
• Understanding Tax On Rental Income: A Guide For Landlords
• A Guide To Landlord Tax: Rates, Relief, and Changes 2024/25
• 5 Best Property Management Software for UK Landlords

Landlord Tax Return: FAQs

Do I still need to complete a tax return if my rental income is below the personal allowance threshold?

Yes. Even if your income is below the personal allowance threshold, you must declare it to HMRC.

Can I deduct travel expenses?

Yes, but only if they are incurred for managing your rental property, such as attending viewings or conducting maintenance checks. You can use Landlord Studio’s built-in mileage tracker to keep a detailed record of your business related travel expenses to ensure you are maximising this deduction.

What happens if I miss the tax return deadline?

Missing the deadline results in an initial penalty of £100, with additional fines if the delay continues.