FAQ 027 | When Must an Overseas Landlord Start Filing a UK Tax Return,and Is It Required Every Year?

Author: SJW Research & Intelligence

Brand: SJW UK Properties

When must an overseas landlord start filing, and is a return required every year?

This is one of the questions overseas landlords ask us most often. Many assume: “My managing agent has applied for the NRL and collects the rent for me, so presumably HMRC will tell me when I need to start filing.” Others ask whether filing once is the end of the matter. Neither is correct. Under the UK tax system, for an overseas landlord who is required to complete Self Assessment, filing is not a one-off task but a continuing annual obligation.

When does the obligation to file begin?

In general, once a UK let property begins to give rise to matters that must be reported for tax, the corresponding obligations under HMRC’s rules should be met. Clients often conflate several different ideas:

 that a return is required as soon as a property is bought;

 that filing begins only once the NRL has been applied for;

 that HMRC will tell you when to start.

These are not the same thing. When Self Assessment is required depends on the individual’s circumstances and on HMRC’s rules.

Will HMRC tell me when to start filing?

This is where overseas landlords are most likely to be mistaken. Since 2015 we have found that many clients assume that if HMRC has not written to them, no return is due. In fact, the UK tax system operates on the principle that the taxpayer is responsible for meeting their own obligations. HMRC will not write to tell you that you may now begin filing simply because your property has been let. Overseas landlords should therefore take the initiative in understanding their tax responsibilities and dealing with them in good time.

Is a return required every year from then on?

In principle, yes. Based on our practical experience at SJW UK Properties since 2015, once you are within the Self Assessment system and HMRC has not formally notified you that filing is no longer required, a return should in principle be completed for each tax year. Not receiving a reminder from HMRC does not mean the obligation has ended. Unless HMRC has formally confirmed that Self Assessment has ceased, a return should in principle continue to be filed each tax year.

If the property is sold, does filing continue?

Many clients assume that once the property is sold, the UTR is cancelled automatically. That is not necessarily so. Selling a property does not automatically bring Self Assessment or the UTR to an end. Where Self Assessment is genuinely no longer required, you should normally notify HMRC, so that it can update your tax record. Otherwise, even after the property has been sold, HMRC’s system may continue to expect a Self Assessment return.

When is the UK tax year?

The UK tax year does not follow the calendar year. It normally runs from 6 April in one year to 5 April in the next.

An important note about tax advice

In the UK, property, mortgages, tax, law and accountancy are separate professional fields, each served by its own qualified professionals. SJW UK Properties is a firm specialising in UK residential property. Since 2015 we have acted for a large number of overseas landlords and built up considerable case experience. This article is compiled principally from publicly available UK government material and from our own experience in practice, and is intended to help overseas landlords understand the points that are easily overlooked in managing UK tax matters. We are not tax advisers or chartered accountants, and nothing in this article constitutes tax, legal or accounting advice. Where specific tax planning, a Self Assessment return or any HMRC matter is involved, we always recommend consulting a professional tax adviser or accountant.

In business since 2015: most penalties arise not from tax, but from timing

Where overseas landlords do incur penalties, it is rarely because a large amount of tax was due. It is because they did not know when to start filing, did not know a return was required every year, did not receive HMRC’s correspondence, changed managing agent, changed accountant, or simply lost sight of the UK property for a long period. What grows in these cases is not the tax, but the penalties and interest.

SJW Practical Tip

We recommend that overseas landlords build their own HMRC tax calendar: set aside the same

time each year to collate rental income records and letting expenses, keep rental statements,

keep invoices for repairs and other costs, contact a professional accountant in good time to

prepare the annual Self Assessment, and watch for notices from HMRC.

SJW Insight

Since 2015 we have become increasingly convinced that what matters in tax management is not filing a return once a year, but building a routine that can be sustained over the long term. For anyone holding UK property over many years, good tax management is itself an important part of asset management.

Official References (as at July 2026)

This article is compiled from UK government and HM Revenue & Customs (HMRC) material, including:

 GOV.UK — Self Assessment

 GOV.UK — Self Assessment tax returns

 GOV.UK — Tax if you live abroad and have UK income

 HM Revenue & Customs (HMRC)

Last updated: July 2026

Disclaimer: This article is provided for general information only and does not constitute legal, tax, accounting or investment advice. UK tax policy may change. Please refer to the current HMRC rules and the advice of a professional tax adviser.