Do you need a tax return for rental income? Registering for Self Assessment and the 31 January deadline

Self Assessment rental-income rules are UK-wide for registration, filing dates and penalties; Scotland has different income tax rates, but not different Self Assessment deadlines. In England, Wales, Scotland and Northern Ireland, the practical question is whether your rental income crosses HMRC’s reporting tests and whether you have told HMRC by 5 October after the tax year.

Do you need to file a tax return for rental income?

You need to file a Self Assessment tax return for rental income if HMRC’s rental-income tests are met: more than £2,500 after allowable expenses, or more than £10,000 before allowable expenses.

HMRC’s property page says, “The first £1,000 of your income from property rental is tax-free,” and says to contact HMRC if property rental income is “more than £1,000 a year, up to £2,500.” Above that, HMRC says rental income must be reported on a Self Assessment tax return if it is over its published limits, including “£10,000 before allowable expenses.”

So the answer to who needs to register for Self Assessment is not simply every landlord: below £1,000 the property allowance usually removes the reporting point, between £1,000 and £2,500 you contact HMRC, and above the return thresholds you complete a tax return for rental income. Making Tax Digital is separate: HMRC says you need it from 6 April 2026 if “your total annual income from self-employment and property is over £50,000.”

When do you have to register for Self Assessment?

You have to register for Self Assessment by 5 October after the tax year in which you first had rental income that needs a return; for 2025/26, GOV.UK says, “You must register for Self Assessment by 5 October 2026 if you have not sent a tax return before.”

The landlord-specific wording is the same: “If you do not usually send a tax return, you need to register by 5 October following the tax year you had rental income.” If you are asking what date you have to register for self-assessment online, the date is still 5 October; online registration is only the method. If you register late, HMRC gives you a new filing date rather than leaving you with no route in: “HMRC will send you a letter or email with a different deadline to send your tax return by - this will be 3 months from the date on the letter or email.” The tax payment deadline still remains 31 January.

How do you register for Self Assessment online, and how long does it take?

You register for Self Assessment online through HMRC, and GOV.UK says your Unique Taxpayer Reference should appear in your personal tax account within 72 hours.

The registration page states, “Your UTR will be in your personal tax account within 72 hours of registering.” If you use post instead, HMRC says, “You’ll usually get your UTR by post in 15 working days (21 days if you’re abroad), but it may take longer during busy periods.” In practice, registering for Self Assessment online is the faster route, but it is not the same thing as filing the return: you still need the UTR, online account access and enough rental records to complete the property pages.

Once you are registered, Abodient keeps the figures your return needs as the year goes: each expense you record is filed under its SA105 box, the Tax estimate card shows the bill building up, and at the year end the SA105 prep pack lays out your property pages ready to copy into the return; for landlords already in Making Tax Digital, Abodient files the quarterly updates to HMRC from the same records.

What happens if you do not register for Self Assessment by 5 October?

The penalty for missing the 5 October Self Assessment registration date is not a flat £100: it applies only if tax is also unpaid after 31 January, and it is a percentage of the tax left unpaid.

GOV.UK says, “If you register after 5 October and do not pay all of your tax bill by 31 January, you may get a ‘failure to notify’ penalty.” HMRC’s Compliance Handbook says, “The following tables show the standard maximum and minimum penalty percentages for each type of failure,” and for a non-deliberate failure the maximum is 30%, with higher percentages for deliberate behaviour.

The penalty can fall away: GOV.UK says, “If you have a reasonable excuse, you can appeal against a penalty,” and HMRC says it is possible to reduce a non-deliberate failure-to-notify penalty to nil for an unprompted disclosure in the relevant circumstances. A late registrant gets a new filing date, usually 3 months from HMRC’s letter or email, but the tax itself is still due by 31 January.

When is the deadline for a landlord's tax return?

A landlord’s online Self Assessment tax return for the 2025/26 tax year is due by 11:59pm on 31 January 2027, and the paper deadline of 31 October 2026 has already passed.

GOV.UK states, “You must submit your online tax return by 11:59pm on 31 January 2027 or you’ll get a late filing penalty,” and separately, “HMRC must receive your paper tax return by 11:59pm on 31 October 2026 or you’ll get a late filing penalty.” The same 31 January 2027 date is also the payment deadline: “You need to pay your Self Assessment tax by 11:59pm on 31 January 2027 or you’ll get a penalty.”

If you want HMRC to collect a qualifying bill through your PAYE tax code, the return must be filed earlier, because GOV.UK says, “If you want to pay your Self Assessment bill through your tax code, you must submit it by 11:59pm on 30 December 2026.” For later years, the pattern remains 31 January after the tax year unless HMRC changes it.

Can you file a tax return after the deadline?

Yes, you can file a tax return after the deadline, but the late-filing penalty ladder starts with an immediate £100 penalty and then becomes much more expensive.

GOV.UK lists “an initial £100 penalty,” then “after 3 months, additional daily penalties of £10 per day, up to a maximum of £900,” then “after 6 months, a further penalty of 5% of the tax due or £300, whichever is greater,” and then “after 12 months, another 5% or £300 charge, whichever is greater.” That means an online 2025/26 return due on 31 January 2027 can generate at least £1,600 in filing penalties before tax-geared amounts exceed the £300 minimums.

Late payment is separate: GOV.UK says, “You’ll get penalties of 5% of the tax unpaid at:” the 30-day, 6-month and 12-month points, plus interest. If you have a reasonable excuse, HMRC says, “If you have a reasonable excuse, you can appeal against a penalty.”

What are the key tax dates for the 2026/27 tax year?

The key 2026/27 tax-year dates are 6 April 2026 to 5 April 2027 for the tax year itself, 5 October 2027 to tell HMRC if you newly need a return for 2026/27, 31 January 2028 for the 2026/27 online return and balancing payment, and 31 July 2027 for a second payment on account where payments on account apply.

GOV.UK says, “The current tax year is from 6 April 2026 to 5 April 2027,” and the 5 October rule is that “You must tell HMRC by 5 October if you need to complete a tax return for the previous year and you have either:” become self-employed or need to report another reason, such as rental income. For landlords in Making Tax Digital during 2026/27, the standard quarterly update dates are 7 August 2026, 7 November 2026, 7 February 2027 and 7 May 2027, and HMRC says, “HMRC will not apply penalty points for late quarterly updates during the 2026 to 2027 tax year.”

For a UK residential property sale, GOV.UK says, “You must report and pay any Capital Gains Tax due on UK residential property within 60 days of completing the sale of the property.”

Last reviewed November 2026.

Sources

• GOV.UK, Renting out a property: paying tax — “The first £1,000 of your income from property rental is tax-free.” Source
• GOV.UK, Renting out a property: paying tax — “Contact HM Revenue and Customs (HMRC) if your income from property rental is more than £1,000 a year, up to £2,500.” Source
• GOV.UK, Renting out a property: paying tax — “You must report it on a Self Assessment tax return if it’s more than:” Source
• GOV.UK, Renting out a property: paying tax — “£10,000 before allowable expenses” Source
• GOV.UK, Register for Self Assessment — “You must register for Self Assessment by 5 October 2026 if you have not sent a tax return before.” Source
• GOV.UK, Renting out a property: paying tax — “If you do not usually send a tax return, you need to register by 5 October following the tax year you had rental income.” Source
• GOV.UK, Self Assessment tax returns: deadlines — “HMRC will send you a letter or email with a different deadline to send your tax return by - this will be 3 months from the date on the letter or email.” Source
• GOV.UK, Register for Self Assessment — “Your UTR will be in your personal tax account within 72 hours of registering.” Source
• GOV.UK, Register for Self Assessment — “You’ll usually get your UTR by post in 15 working days (21 days if you’re abroad), but it may take longer during busy periods.” Source
• GOV.UK, Sign up for Making Tax Digital for Income Tax — “You need to use Making Tax Digital for Income Tax from 6 April 2026 if your total annual income from self-employment and property is over £50,000.” Source
• GOV.UK, Self Assessment tax returns: penalties — “If you register after 5 October and do not pay all of your tax bill by 31 January, you may get a ‘failure to notify’ penalty.” Source
• HMRC Compliance Handbook CH73200 — “The following tables show the standard maximum and minimum penalty percentages for each type of failure.” Source
• GOV.UK, Self Assessment tax returns: penalties — “If you have a reasonable excuse, you can appeal against a penalty.” Source
• HMRC Compliance Handbook CH73200 — “As shown, it is possible to reduce the penalty to nil for an unprompted disclosure where the failure to comply with a relevant obligation is non-deliberate and HMRC become aware of the failure within 12 months of the time at which tax first becomes unpaid.” Source
• GOV.UK, Self Assessment tax returns: deadlines — “You must submit your online tax return by 11:59pm on 31 January 2027 or you’ll get a late filing penalty.” Source
• GOV.UK, Self Assessment tax returns: deadlines — “HMRC must receive your paper tax return by 11:59pm on 31 October 2026 or you’ll get a late filing penalty.” Source
• GOV.UK, Self Assessment tax returns: deadlines — “You need to pay your Self Assessment tax by 11:59pm on 31 January 2027 or you’ll get a penalty.” Source
• GOV.UK, Self Assessment tax returns: deadlines — “If you want to pay your Self Assessment bill through your tax code, you must submit it by 11:59pm on 30 December 2026.” Source
• GOV.UK, Self Assessment tax returns: penalties — “an initial £100 penalty” Source
• GOV.UK, Self Assessment tax returns: penalties — “after 3 months, additional daily penalties of £10 per day, up to a maximum of £900” Source
• GOV.UK, Self Assessment tax returns: penalties — “after 6 months, a further penalty of 5% of the tax due or £300, whichever is greater” Source
• GOV.UK, Self Assessment tax returns: penalties — “after 12 months, another 5% or £300 charge, whichever is greater” Source
• GOV.UK, Self Assessment tax returns: penalties — “You’ll get penalties of 5% of the tax unpaid at:” Source
• GOV.UK, Income Tax rates and Personal Allowances — “The current tax year is from 6 April 2026 to 5 April 2027.” Source
• GOV.UK, Self Assessment tax returns: deadlines — “You must tell HMRC by 5 October if you need to complete a tax return for the previous year and you have either:” Source
• GOV.UK, Use Making Tax Digital for Income Tax: send quarterly updates — “HMRC will not apply penalty points for late quarterly updates during the 2026 to 2027 tax year.” Source
• GOV.UK, Self Assessment tax returns: deadlines — “There is a second payment deadline of 31 July if you make payments towards your bill - these are known as ‘payments on account’.” Source
• GOV.UK, Report and pay your Capital Gains Tax — “You must report and pay any Capital Gains Tax due on UK residential property within 60 days of completing the sale of the property.” Source