The Autumn 2025 Budget raised the ordinary and upper dividend tax rates by two percentage points from 6 April 2026: basic-rate taxpayers now pay 10.75% (was 8.75%) and higher-rate taxpayers 35.75% (was 33.75%) on dividends above the allowance. The additional rate stays at 39.35%. The dividend allowance stays frozen at £500 — a shadow of the £5,000 it launched at in 2016.
Two groups feel this directly. GIA investors — anyone holding income-paying funds or shares outside an ISA or pension — pay more on every distribution, whether or not they spend it. And limited company directors who pay themselves in dividends see the cost of every pound extracted rise by 2p in the basic and higher bands.
How the calculation actually works
Dividends are the top slice of your income. Your salary, self-employment, rental and pension income fill the personal allowance and the tax bands first; your dividends stack on top and are taxed at the dividend rate of whichever band they land in. The £500 allowance zero-rates the first slice of dividends but still uses band space — a subtlety plenty of calculators get wrong. Above £100,000 of adjusted net income, the personal allowance tapers away at £1 for every £2, which drags more of everything into tax.
The three levers that actually move the number
1 · Shelter the holdings. Dividends inside an ISA or pension are tax-free, full stop. If the investments generating your taxable dividends could be inside your £20,000 ISA allowance instead, selling and rebuying inside the wrapper — Bed-and-ISA — removes this tax permanently. That page shows the one-off CGT cost against the lifetime saving.
2 · Pension contributions. A relief-at-source pension contribution extends your basic-rate band pound for pound (gross). Dividends that were being taxed at 35.75% can drop to 10.75% — a 25-point swing — and contributions also rebuild a tapered personal allowance. Try it in the calculator above: add a gross contribution and watch the bill move.
3 · Use both halves of a couple. Transfers between spouses and civil partners are tax-free. Moving income-producing holdings to whichever of you has the lower band — and the second £500 allowance — is one of the oldest, simplest pieces of household tax hygiene.
A worked example
Salary £45,000, dividends £10,000, 2026/27. The salary uses the £12,570 personal allowance and £32,430 of the £37,700 basic band. The first £500 of dividends is covered by the allowance (but eats band space); £4,770 more fits in the basic band at 10.75% (£512.78); the remaining £4,730 falls in the higher band at 35.75% (£1,690.98). Total: £2,203.75 — £190.00 more than the same income cost in 2025/26. The same person making a £6,000 gross pension contribution would pull most of those higher-band dividends back to 10.75%.
Methodology
The calculator applies the 2026/27 (or 2025/26) UK rules: personal allowance £12,570, tapered £1 for £2 above £100,000 of adjusted net income (total income minus gross relief-at-source pension contributions); basic-rate band £37,700 and higher-rate threshold £125,140, both extended by gross pension contributions; dividend allowance £500 taxed at nil but occupying band space; dividends top-sliced above non-dividend income; dividend rates 10.75% / 35.75% / 39.35% for 2026/27 and 8.75% / 33.75% / 39.35% for 2025/26. Unused personal allowance left by non-dividend income is set against dividends. It computes dividend tax only — not the income tax or NI on your other income.