Why HMRC may ignore your UK dividends entirely: the disregarded income rule

There is a rule in UK tax law that almost no expat has heard of and that can, in the right circumstances, remove the UK tax charge on your dividends and bank interest entirely. It is not a loophole and it is not a claim you have to argue for. It is a statutory limit on what HMRC can charge a non-resident, and it has been sitting in the legislation for years.

It comes with a price, and the price is your personal allowance. Whether the deal is worth taking depends entirely on the shape of your UK income, which is why HMRC works it out both ways and charges you the lower figure.

What the rule actually says

HMRC's helpsheet HS300 puts it plainly: if you are not resident in the UK, the tax you pay on all your income cannot be more than the total of two things. First, the tax chargeable on your income other than your ‘disregarded income’, calculated before the deduction of any personal allowances. Second, the tax deducted at source from the disregarded income itself.

Read that second limb carefully, because it is where the money is. UK dividends have carried no tax deducted at source since April 2016, and UK bank and building society interest has been paid gross since the same date. So for most people the second limb is nil, and the disregarded income effectively drops out of the UK computation altogether.

What counts as disregarded income — and what does not

Disregarded	Not disregarded
Dividends and stock dividends from UK-resident companies	UK property income (rent)
Interest and alternative finance receipts from UK banks and building societies	UK employment income
Income from unit trusts and National Savings & Investments	Trading income through a UK permanent establishment
Purchased life annuity payments (not personal pension annuities)	A partnership share of investment income
Deeply discounted securities, distributions from unauthorised unit trusts, transactions in deposits	Most occupational and personal pension income
Annual payments, and certain social security income including the State Pension	Anything with UK tax already deducted that you want repaid

The line that catches expats is the first one on the right. Rental profit from a UK property is never disregarded income, which is why a landlord-only client sees no benefit from this rule at all — and why the arithmetic changes completely as soon as there are dividends in the picture.

The worked example

A British citizen, non-UK resident, for the 2026/27 tax year. UK property profit of £18,000, UK dividends of £60,000 and UK bank interest of £3,000. Being a British citizen, they are entitled to the personal allowance as a non-resident. Figures are the published 2026/27 rates; this is an illustration of the mechanism, not a client file.

Computation 1 — normal basis
Property £18,000 less personal allowance £12,570 → £5,430 at 20%	£1,086
Interest £3,000: £500 savings allowance at 0%, £2,500 at 20%	£500
Dividends: £500 allowance at 0%, £28,770 at 10.75%, £30,730 at 35.75%	£14,079
Total	£15,665

Computation 2 — disregarded income basis
Property £18,000 at 20%, with no personal allowance	£3,600
Tax deducted at source on the dividends and interest	£0
Total	£3,600

The liability is the lower of the two: £3,600. Giving up a £12,570 personal allowance costs £2,514 of extra tax on the property income and saves £14,579 on the investment income.

Now change one number. Drop the dividends to £14,000 and computation 1 falls to about £2,937 while computation 2 stays at £3,600 — and the normal basis wins. There is no rule of thumb here beyond the obvious one: the more of your UK income is investment income and the less is property or employment, the better the disregarded basis looks.

Why this is worth more from April 2026 than it was

The dividend ordinary rate rose from 8.75% to 10.75% and the upper rate from 33.75% to 35.75% from April 2026, with the additional rate unchanged at 39.35%. Every increase in dividend rates increases what computation 1 costs and leaves computation 2 untouched, because computation 2 does not tax the dividends at all.

The same happens again in April 2027, when the savings basic, higher and additional rates rise to 22%, 42% and 47%. That change cuts both ways for a landlord, because separate property income rates of 22%, 42% and 47% arrive at the same time — and property income is exactly what computation 2 taxes without a personal allowance. If you have UK rent as well as UK investments, the balance between the two computations moves in 2027/28, and it is worth rerunning rather than assuming last year's answer holds.

The three things people get wrong

Assuming HMRC will spot it. The limit only applies if the return tells HMRC you are non-resident. That means the residence pages (SA109), which cannot be filed on HMRC's own online service — see why you cannot file online for the ways round it.
Assuming their software runs both computations. Some packages do the comparison automatically and some do not. If your return shows a personal allowance and a full dividend charge, check whether the alternative was ever calculated.
Forgetting the treaty. A double tax agreement may cap the UK rate on dividends or interest independently, and may also be what grants your personal allowance in the first place if you are not a British or EEA national. How treaties interact with domestic rules is a separate question from this one, and both have to be answered.

If you have UK rent and UK investments and have never seen the two computations side by side, that is exactly the check to make before the January deadline — our non-resident Self Assessment service runs it as standard, and the landlord service covers the rental side.

Questions readers ask

What exactly is 'disregarded income'?

It is a defined list of UK savings and investment income that, for a non-resident, can be left out of the UK tax computation. HMRC's HS300 helpsheet names dividends and stock dividends from UK-resident companies, interest and alternative finance receipts from UK banks and building societies, income from unit trusts and National Savings and Investments, purchased life annuity payments other than personal pension annuities, deeply discounted securities, distributions from unauthorised unit trusts, transactions in deposits, annual payments, and certain social security and pension income including the State Pension. What is not on the list matters just as much: UK property income, UK employment income, trading income through a UK permanent establishment, and a partnership share of investment income are all excluded.

Do I have to choose between the two computations?

No, and that is the useful part. The rule is a statutory cap rather than an election you make, so your liability is simply the lower of the two figures. HMRC's calculation works out the tax on the normal basis, with your personal allowance and everything taxed, and then works out the alternative: tax on your non-disregarded income with no personal allowance at all, plus any tax deducted at source from the disregarded income. You pay whichever comes out lower. The catch is practical rather than legal. The comparison only happens if your return declares you as non-resident, and not every piece of commercial software runs it, so it is worth checking that the alternative was actually calculated.

Why does the personal allowance disappear under the second computation?

Because the two things are a package. HS300 states that where the tax charge is limited in this way, personal allowances are not given against the other income. The logic is straightforward once you see it: the rule already removes an entire category of income from the charge, so the legislation does not also hand you an allowance to set against what is left. For a British citizen with UK rental profit, that means the property income is taxed from the first pound rather than from £12,571. On rent of £18,000 in 2026/27, giving up the £12,570 allowance costs £2,514 of extra tax, and whether that is worth paying depends entirely on how much investment income it takes out of charge.

I only have UK rental income. Does this help me at all?

No, and it is worth knowing that clearly rather than hoping. Rental profit from UK property is never disregarded income, so the second computation would tax the whole of it with no personal allowance while removing nothing from the charge. For a landlord with no UK dividends, interest or other investment income, the normal basis with the personal allowance will always be the lower figure, and HMRC will charge that. The rule only starts to bite when there is UK investment income sitting alongside the rent. If your UK income is purely rental, the questions worth your time are the Non-resident Landlord Scheme, allowable expenses and the mortgage interest credit instead.