How the tax is collected once you live abroad
Once your usual place of abode is outside the UK (HMRC normally treats an absence of six months or more this way, a different test from the Statutory Residence Test), the Non-Resident Landlord Scheme applies. Your letting agent must deduct basic-rate tax at 20% from the rent whatever its level and pay it to HMRC quarterly; a tenant paying you directly does the same where the rent is over £100 a week. You can apply on form NRL1 to receive the rent gross. Approval does not make the income tax free: it moves collection to your Self Assessment return, and HMRC expects your UK tax affairs to be up to date before approving.
The common trap: paying more than you owe
The 20% deduction is worked out on the rent less only the expenses your agent knows about, ignoring your Personal Allowance and the basic-rate reduction for mortgage interest, so it usually over-collects. Without NRL1 approval the tax is taken before the rent reaches you, and you reclaim any excess through your return after the year ends, using the NRL6 certificate your agent or tenant must give you by 5 July. Your country of residence will normally tax the same rent too, but a double taxation agreement usually gives credit for the UK tax, so you should not pay twice in full.
What to do
Tell HMRC you have left the UK, apply for gross payment on NRL1 (each joint owner applies separately), and register for Self Assessment. Each year you report the rent on the SA105 property pages alongside the SA109 residence pages, filing on paper, through commercial software or via an agent. Our non-resident landlord tax guide covers the scheme, the forms and the allowances in detail, and our expat Self Assessment guide explains the filing route.
