This page shows income tax and Class 4 NI with a quarterly set-aside estimate using current 2026/27 assumptions. Class 2 NI was abolished from April 2024 and is no longer payable.
Updated for 2026/27 · Reviewed by James Whitfield · Methodology and assumptions
| Annual profit | £120,000.00 |
| Personal allowance | £2,570.00 |
| Taxable income | £117,430.00 |
| Income tax — Basic rate (20%) | £7,540.00 |
| Income tax — Higher rate (40%) | £29,948.00 |
| Income tax — Additional rate (45%) | £2,187.00 |
| Class 4 NI — £12,570 to £50,270 (6%) | £2,262.00 |
| Class 4 NI — Above £50,270 (2%) | £1,394.60 |
| Total deductions | £43,331.60 |
| Net income | £76,668.40 |
Monthly net income
£6,389.03
Weekly net income
£1,474.39
Effective deduction rate
36.1%
Set aside £21,665.80 per quarter. Payment dates are typically 31 January and 31 July.
For £120,000 profit, the estimate combines income tax by band, Class 2 NI (where applicable) and Class 4 NI, then shows total deductions and net income.
Self-employed NI includes Class 2 (flat annual amount above the threshold) and Class 4 (6% then 2% by profits band). This page shows both parts separately.
A planning estimate is £21,665.80 per quarter for payments on account, with due dates typically 31 January and 31 July.
Get a PDF of this self-employed calculation with tax, NI and quarterly set-aside values.
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