Tax and NI
Self-employed tax in Scotland
Holyrood sets the Income Tax bands on your trading profit; Westminster still sets Class 4, dividend tax and the Personal Allowance.
A Scottish sole trader with £40,000 of profit in 2026/27 pays £5,551 of Income Tax and £1,646 of Class 4, £7,197 in all, against £7,132 for the same profit in England, Wales or Northern Ireland. The difference comes only from Income Tax: Scotland splits taxable profit into six bands, from a starter rate of 19 % to a top rate of 48 %, while Class 4 National Insurance is a UK tax charged at the same 6 % and 2 % everywhere. The Personal Allowance of £12,570 and its taper above £100,000 are also UK rules. Whether you count as a Scottish taxpayer depends on where your main home is, not on where your customers or your business address are. Dividends and savings interest stay on UK rates, and borrowers who applied through the Student Awards Agency Scotland repay a Plan 4 loan from £33,795.
Self Assessment bill 2026/27
£7,197
Put aside 18.0 % of your profit · next £100 of profit costs 27.0 %
| Profit | £40,000 |
| Income Tax | £5,551 |
| Class 4 National Insurance | £1,646 |
| Class 2 | treated as paid |
| Kept from your profit | £32,803 |
When you pay, if 2026/27 is your first year
| 31 January 2028: bill + first payment on account | £10,795 |
| 31 July 2028: second payment on account | £3,598 |
Each payment on account is half of £7,197 (Income Tax and Class 4, loans excluded). How payments on account work
Making Tax Digital at this turnover
Turnover of £45,000 is over the £30,000 test. If your 2025/26 return showed income like this, quarterly updates start on 6 April 2027. Check your start date
Figures checked by Radif Partners · Editorial policy · How we calculate
The six Scottish bands for 2026/27
The table gives the 2026/27 Scottish rates as income, with the standard Personal Allowance, as GOV.UK publishes them (GOV.UK, Income Tax in Scotland). The allowance disappears for incomes over £125,140, exactly as in the rest of the UK.
| Band | Income | Rate |
|---|---|---|
| Personal Allowance | up to £12,570 | 0 % |
| Starter rate | £12,571 to £16,537 | 19 % |
| Basic rate | £16,538 to £29,526 | 20 % |
| Intermediate rate | £29,527 to £43,662 | 21 % |
| Higher rate | £43,663 to £75,000 | 42 % |
| Advanced rate | £75,001 to £125,140 | 45 % |
| Top rate | over £125,140 | 48 % |
The calculator above starts from £45,000 of takings and £5,000 of costs, a profit of £40,000, and returns a bill of £7,197. Change the figures to your own; the Scottish setting is already chosen.
Where Scotland becomes the dearer place to trade
At low profits a Scottish sole trader pays a little less than a counterpart in Newcastle or Cardiff, because the first slice above the allowance is taxed at 19 % rather than 20 %. The intermediate band at 21 % wipes out that saving in the low thirties, and from £43,663 the 42 % higher rate widens the gap fast. Around £50,000 a Scottish trader is paying the higher rate on several thousand pounds that would still be basic-rate income south of the border.
| Profit | Scotland | England, Wales, NI | Difference |
|---|---|---|---|
| £20,000 | £1,892 | £1,932 | −£40 |
| £30,000 | £4,497 | £4,532 | −£35 |
| £40,000 | £7,197 | £7,132 | +£65 |
| £50,000 | £11,228 | £9,732 | +£1,496 |
| £75,000 | £22,239 | £20,189 | +£2,050 |
Class 4 keeps the UK limits
National Insurance is not devolved. Class 4 is 6 % on profit between £12,570 and £50,270 and 2 % above, in Inverness as in Plymouth (GOV.UK, self-employed National Insurance rates). Because the Scottish higher rate starts well before the Class 4 upper limit, there is a stretch of profit, from £43,663 to £50,270, where both bite at full strength. The combined marginal rate there is 48 %, which is why pension contributions tend to come up earlier in conversations with Scottish freelancers.
Who counts as a Scottish taxpayer
GOV.UK’s test is residence. You pay Scottish Income Tax if you live in Scotland; with homes on both sides of the border, the one that counts is your main home, usually where you spend most of your time, but possibly the place where your family lives and your possessions, GP and bank are registered. A lorry driver or offshore worker with no settled home counts days instead: more days in Scotland than elsewhere in the UK, judged by where you are at midnight, makes you Scottish for the whole year. Someone who moves north and lives there longer than anywhere else in the UK during the tax year is Scottish for that year. On the online return there is a box to tell HMRC, and the rate follows the address HMRC holds, so a move should be reported.
What stays on UK rules
Dividends and savings interest are taxed at UK rates even for a Scottish taxpayer. Dividends use 10.75 %, 35.75 % and 39.35 % with the UK band limits after a £500 allowance (GOV.UK, tax on dividends), which matters to anyone comparing a sole trader with a company: the dividend tax calculator handles the mix. Pension relief, by contrast, follows the Scottish rates: a higher-rate Scottish taxpayer claims extra relief in line with the 42 % band, as the pension relief page shows (GOV.UK, pension tax relief).
Plan 4 student loans
Anyone who applied to the Student Awards Agency Scotland is on Plan 4, for undergraduate and postgraduate courses alike, with a repayment threshold of £33,795 and a rate of 9 % on income above it (GOV.UK, student loan repayments). Through Self Assessment, £40,000 of profit means a Plan 4 repayment of £558, which lifts the January bill to £7,755. The student loan page compares every plan.