If you receive rent from a property, you may need to tell HMRC about the income and complete a Self Assessment tax return.


However, receiving rental income does not automatically mean that you need to file a tax return. It depends on how much rental income you receive, your allowable expenses and your wider circumstances.


There is also now another consideration for landlords: Making Tax Digital for Income Tax (MTD), which is being introduced in stages from April 2026.


Here’s what you need to know.


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How much rental income can I receive without telling HMRC?


Individuals can potentially benefit from the £1,000 Property Allowance.


If your gross property income is £1,000 or less in a tax year, you will normally not need to tell HMRC about it, provided you are eligible to use the allowance.


Gross income means the amount you receive before deducting expenses.


For example, if you receive £900 in rent during the tax year and qualify for the Property Allowance, you would normally have no tax to pay on that income and would not need to report it to HMRC.


There are circumstances in which the Property Allowance cannot be used, so it is important not to assume that the first £1,000 of every type of property income is automatically tax-free.


What if my rental income is more than £1,000?


Once your gross property income exceeds £1,000, you may need to tell HMRC.


HMRC currently says that if your gross property income is more than £1,000 but no more than £2,500, you should contact HMRC.


You must normally report your rental income through Self Assessment if it is:


  • more than £2,500 after allowable expenses; or
  • £10,000 or more before allowable expenses.


If you already complete a Self Assessment tax return for another reason, you will generally include your property income on that return.


Is tax charged on my rental income or my profit?


In most cases, Income Tax is ultimately based on your taxable rental profit, rather than simply the total rent your tenant pays you.


Broadly, you start with your rental income and deduct expenses that are allowable for tax purposes.


Depending on your circumstances, allowable costs might include things such as:


  • letting agent and management fees;
  • landlord insurance;
  • repairs and maintenance;
  • accountancy costs relating to the property business; and
  • certain other costs incurred in letting the property.


Not every cost connected with a property is deductible, however, and there are specific rules for items such as improvements and finance costs.


Alternatively, if you're eligible, you may choose to use the £1,000 Property Allowance instead of deducting actual expenses. You cannot claim both the Property Allowance and actual expenses against the same property income. 


Can I deduct my mortgage payments?


This is a common source of confusion.


If you personally own a residential rental property, you cannot simply deduct your entire mortgage payment from the rent when calculating your taxable profit.


The capital repayment element isn't an allowable rental expense, and individual residential landlords are subject to specific rules for tax relief on qualifying finance costs.


This means that the amount of cash you have left after paying the mortgage is not necessarily the same as your taxable rental profit.


What if I jointly own the rental property?


You are normally taxed on your share of the rental income and expenses rather than necessarily declaring all of the property's income yourself.


If you jointly own property with someone else, each owner can potentially qualify for their own £1,000 Property Allowance against their share of qualifying gross property income.


There are additional rules for property owned jointly by spouses and civil partners, so it is important to establish the correct ownership and profit-sharing position.


What if I rent out a room in my home?


Different rules may apply if you let furnished accommodation in your main home.


Under Rent a Room relief, you can potentially receive up to £7,500 a year tax-free from letting furnished accommodation in your home.


The limit is normally reduced to £3,750 each where somebody else also receives income from letting accommodation in the same property.


Rent a Room relief has its own conditions and is separate from the £1,000 Property Allowance.


When do I need to register for Self-Assessment?


If you need to complete a tax return because of rental income and you do not already file Self Assessment returns, you will normally need to register with HMRC by 5 October following the end of the relevant tax year.


For example, if you first receive rental income that needs to be reported during the 2026/27 tax year, you would normally need to notify HMRC by 5 October 2027.


The online Self Assessment filing and tax payment deadline is normally 31 January following the end of the tax year.


What if I haven't declared rental income from previous years?


Don't ignore it.


If you should have told HMRC about rental income in an earlier tax year but didn't, it may be possible to make a voluntary disclosure and bring your tax affairs up to date.


HMRC specifically says that penalties can be lower where you tell them about previously undeclared rental income yourself rather than waiting for HMRC to discover it.


The appropriate way to correct the position depends on the years involved and whether you were already submitting tax returns.


Do landlords have to use Making Tax Digital?


This has now become particularly important.


Making Tax Digital for Income Tax began on 6 April 2026 for qualifying sole traders and landlords.

You need to consider your total qualifying income from self-employment and property combined, before expenses.


MTD is being introduced in stages:


  • If your qualifying income is over £50,000 for the 2024/25 tax year, MTD starts from 6 April 2026,
  • If your qualifying income is over £30,000 for the 2025/26 tax year, MTD starts from 6 April 2027;
  • and if your qualifying income is over £20,000 for the 2026/27 tax year, MTD starts from 6 April 2028.


Under MTD, affected landlords need to use compatible software to maintain digital records, submit quarterly updates to HMRC and ultimately submit their tax return through the MTD system.


So even if you've been used to dealing with your rental accounts once a year, you may now need to keep your records digitally and much more regularly.


Do I need a tax return if I make a loss on my rental property?


Potentially.


Having no tax to pay does not necessarily mean there is nothing to report.


There can also be advantages to correctly reporting an allowable property loss because, subject to the relevant rules, it may be available to offset against future profits from the same property business.


Whether you need to submit a return will depend on the circumstances rather than simply whether the property made a profit.


So, do I need a tax return for rental income?


As a general guide:


£1,000 or less of qualifying gross property income: you may be covered by the Property Allowance and may not need to tell HMRC.


More than £1,000: you need to consider whether the income needs to be reported to HMRC.


More than £2,500 after allowable expenses or £10,000 or more before expenses: HMRC normally requires the rental income to be reported through Self Assessment.


And if your combined qualifying property and self-employment income is high enough, you also need to consider whether Making Tax Digital for Income Tax applies to you.


The important point is that rental income, taxable rental profit and the thresholds for Self Assessment and MTD are not the same thing.


Need help with tax on rental income?


If you receive rental income and you're unsure whether you need to register for Self Assessment, what expenses you can claim or whether Making Tax Digital applies to you, I can help.



At Tunstall Accounting, I provide straightforward tax and accounting support to landlords and individuals with property income.

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