£18,000 Self-Employed After Tax 2026-27
Sole trader / freelancer · Class 2 + Class 4 NIC · 2026-27 tax year
£18,000 self-employed, full tax breakdown 2026-27
| Item | Annual | Monthly |
|---|---|---|
| Gross profit | £18,000 | £1,500 |
| Personal Allowance (tax-free) | £12,570 | £1,048 |
| Income Tax | −£1,086 | −£91 |
| Class 2 NI (£3.65/week) | −£0 | −£0 |
| Class 4 NI (6%/2%) | −£326 | −£27 |
| Net take-home | £16,588 | £1,382 |
Self-employed NIC on £18,000 profit
| Class 2 NI (£3.65 × 52 weeks) | £0/year |
| Class 4 NI (6% on £5,430) | £326 |
| Total NI | £326 |
Class 2 NI counts towards State Pension and certain benefits. Class 4 NI does not provide direct entitlements. Both are paid via Self Assessment by 31 January.
£18,000 self-employed after tax in Scotland 2026-27
In Scotland, £18,000 self-employed profit gives take-home pay of £16,627, £39 more than England/Wales due to Scotland's different Income Tax rates. NI (Class 2 and Class 4) is UK-wide and unaffected by Scottish rates.
£18,000 self-employed take-home pay explained
As a self-employed person (sole trader or freelancer) with £18,000 profit in 2026-27, your tax position differs from employed workers in one key area: National Insurance. You pay Class 2 NI (£0/year) and Class 4 NI (£326/year), instead of employee NI. Income Tax is identical, using the same Personal Allowance (£12,570) and rates (20%/40%/45%).
Self-employed NI is generally lower than employee NI: Class 4 at 6% vs employee NI at 8% on earnings £12,570-£50,270. However, there is no employer NI contribution to your state benefits. Compare using the PAYE vs self-employed calculator.
Tax and NI for self-employed people are paid via Self Assessment, the January 31st deadline covers tax for the previous year, plus a 50% payment on account for the current year. Pension contributions reduce your taxable profit.
Frequently asked questions
How much is £18,000 self-employed profit after tax?
On £18,000 self-employed profit in 2026-27, you take home £16,588 per year (£1,382/month). Deductions: Income Tax £1,086, Class 2 NI £0, Class 4 NI £326. Total NI: £326.
How much National Insurance does a self-employed person pay on £18,000?
On £18,000 self-employed profit, you pay £326 total NI: Class 2 (£0/year flat rate, 52 × £3.65) plus Class 4 (£326) at 6% on profits £12,570-£50,270 and 2% above £50,270. Self-employed NI is lower than employee NI at most income levels.
What is £18,000 self-employed per month after tax?
£18,000 self-employed profit gives you £1,382 per month after Income Tax (£91/month) and NI (£27/month).
How does self-employed tax differ from employed at £18,000?
As a self-employed person on £18,000 profit, you pay Income Tax at the same rates as employed, but National Insurance differs. Self-employed pay Class 4 NI (6%/2%) + Class 2 NI (£3.65/week), whereas employees pay 8%/2% employee NI. Your employer also does not contribute to NI for you.
What is the effective tax rate for £18,000 self-employed?
The effective tax rate (Income Tax + all NI as % of profit) on £18,000 self-employed income is 7.8%. Income Tax is £1,086 and total NI is £326, giving total deductions of £1,412.
How much is £18,000 self-employed after tax in Scotland?
In Scotland, £18,000 self-employed profit gives take-home pay of £16,627/year, £39 more than England/Wales, due to Scotland's different Income Tax bands (same NI applies UK-wide).