Non-Resident Landlord UTR Number and Form 64-8: Getting Set Up with HMRC
Your Unique Taxpayer Reference (UTR) is the 10-digit number HMRC uses to identify you in the Self Assessment system. Without one, you cannot file a Self Assessment return to declare your UK rental income or reconcile tax your letting agent has withheld. If you're a non-resident landlord who's never been in the UK tax system, getting a UTR from abroad is your first administrative hurdle.
How to Get a UTR as a Non-Resident
If you already have a UTR from previous UK self-employment, partnership activity, or a prior Self Assessment registration, it's the same number — it doesn't change when you move abroad. Check old tax correspondence or your Personal Tax Account on GOV.UK.
If you've never had one, you need to register for Self Assessment. Non-residents can register:
Online through GOV.UK — you'll need to sign in or create an account. The standard SA1 registration requires a valid National Insurance number (NINO). If you do not have one, contact HMRC to confirm the route for your circumstances before applying.
By post — write to HMRC at Self Assessment, BX9 1AS, providing your full name, date of birth, NINO, overseas address, and the reason for registering (UK rental income from property). If you do not have a NINO, contact HMRC to confirm the route for your circumstances before applying.
HMRC usually sends a UTR by post around 15 days after registration; it takes longer if you live overseas. The UTR is sent by letter — not by email — which adds delivery time for overseas addresses. This is one reason to start the process early, ideally alongside your NRL1 application in the pre-departure window.
Why the UTR Matters for the NRL1
Form NRL1 asks for taxpayer details including your UTR and NINO. If you do not yet have a UTR, check the current NRL1 instructions or contact HMRC before submitting; do not assume HMRC will process a UTR registration and NRL1 application together.
Having your UTR ready before applying for NRL1 can reduce the chance of HMRC correspondence going back and forth.
Form 64-8: Authorising a Tax Agent
Form 64-8 (Authorising Your Agent) is an HMRC form that allows a third party — usually a UK accountant or tax agent — to deal with HMRC on your behalf. It covers communication, filing, and correspondence about your tax affairs.
Non-resident landlords commonly use Form 64-8 in two situations:
Filing your tax return. If you appoint a UK accountant to file your SA100/SA105/SA109, authorise them through HMRC's online agent-authorisation service or use a paper Form 64-8, depending on the service available for your circumstances. This lets them access your tax records, submit returns on your behalf, and receive copies of HMRC correspondence.
Submitting the NRL1 application. If your tax agent submits the NRL1 on your behalf, it must be accompanied by a signed Form 64-8. There's an important restriction here: when a 64-8 is being submitted alongside the NRL1, you cannot use the online route. The application must be printed, physically signed, and posted to HMRC with the 64-8 attached.
Form 64-8 itself is a paper form: you complete and sign it, then post it to HMRC. Your agent's details go on the form, but the client signs the authorisation. For an NRL1 application accompanied by Form 64-8, use the print-and-post route described above. The authorisation remains in place until you or the agent cancel it, or until you appoint a different agent.
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Common Problems Non-Residents Hit
Missing UTR on HMRC correspondence. If you registered years ago and can't find your UTR, check previous tax returns, your Personal Tax Account, the HMRC app, or other HMRC correspondence. If it is not there, contact HMRC Self Assessment general enquiries (0300 200 3310, or +44 161 931 9070 from abroad).
UTR versus NINO. These are different numbers. Your National Insurance number (NINO) is used for employment and benefit purposes; your UTR is used for Self Assessment. You need the UTR to file tax returns. You may need the NINO for other interactions with HMRC, but it's the UTR that drives your Self Assessment record.
Overseas address changes. If you move between countries while abroad, update your address with HMRC. Correspondence — including UTR notifications, approval notices, and tax calculations — goes to the address on file. An outdated address means missed post and potentially missed deadlines.
Our Non-Resident Landlord Scheme guide covers the full registration and setup sequence, including UTR application timing, Form 64-8 mechanics, and how to coordinate these with your NRL1 application so that gross payment approval arrives as quickly as possible.
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