Dividend tax calculator: the top-slice arithmetic
The £500 allowance, then the April-2026 rates of 10.75% / 35.75% / 39.35%, with dividends stacked as the top slice of your income and the personal-allowance taper applied when total income crosses £100,000. The same function the Hundred Summers engine charges on unwrapped holdings every projected year. Your figures never leave your browser.
Loading the calculator… (requires JavaScript; your figures never leave your browser)
Worked example
Computed when this page was built by the same engine that runs the calculator above, so the figures below and the live tool can never disagree. Change any input above to see your own.
| Inputs | |
|---|---|
| Other taxable income | £35,000 |
| Dividends | £10,000 |
| Results | |
|---|---|
| Dividend tax | £1,021 |
| Effective rate on the dividends | 10.2% |
| Kept | £8,979 |
The next question
Sole trader or limited company? →Sole trader vs limited company
Or answer it with everything else: the full Hundred Summers plan connects your pay, pensions, savings, property, tax and spending year by year, and stress-tests them across 500 simulated market histories.
Read the guides
- Which account to spend first in retirement →ISA, pension, general account: the order you draw them decides how much tax retirement pays. The mechanics of filling the personal allowance, the GIA-first doctrine, and how April 2027 rewrites the classic advice.
- Sole trader or limited company: the tax, and everything the tax ignores →Why the company route now loses at modest profits on 2026/27 rates and wins again higher up, what a director actually pays on salary and dividends, the Employment Allowance trap for one-person companies, and the non-tax reasons that often decide it.
- Investment bonds and top-slicing: how a gain is taxed, and when it isn't →Onshore and offshore bonds, the 5% withdrawals that defer tax, chargeable events, and top-slicing relief: the rule that lets a ten-year gain be taxed as if spread over ten years, so a basic-rate taxpayer can pay nothing on an onshore gain.
The stacking rule
Dividends are taxed as the top slice of income: your salary, pension and rent fill the bands first, and dividends land wherever the stack ends. A £10,000 dividend costs £1,021 for someone on £30,000 and £3,396 for someone on £60,000: same dividend, different band. The allowance has shrunk from £5,000 (2017) to £500, pulling ordinary investors into self-assessment.
The escape routes are structural, not clever: ISAs and pensions pay no dividend tax at all, and moving £20,000 a year of existing holdings into an ISA ("bed and ISA"; mind the CGT on the sale) steadily shelters a portfolio. The full Hundred Summers plan charges this exact function on your unwrapped holdings in every projected year, and its insights rail totals what unwrapped money costs across your whole plan.