Estimate your take-home profit after income tax and Class 4 NI. Compulsory Class 2 NI ended from April 2024 (it is now voluntary if profits are under £7,105). You can also model student loan deductions and see how much to set aside for quarterly tax payments.
Updated for 2026/27 · Reviewed by James Whitfield · Methodology and assumptions
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Estimate your self-employed take-home in three steps, using the same tax-year assumptions across the site.
Use annual profit after allowable business expenses, not turnover. This keeps the estimate aligned to Self Assessment treatment.
The calculation combines income tax with Class 4 National Insurance, and includes student loan deductions if selected. Compulsory Class 2 NI ended from April 2024 (it is now voluntary if profits are under £7,105).
Use the quarterly set-aside as a savings estimate, then reconcile with your actual HMRC statement. In your first year, save extra: the first 31 January bill can be up to 150% of a year's tax.
The estimate applies income tax bands to profit, then adds Class 4 NI. Compulsory Class 2 NI ended from April 2024 (it is now voluntary if profits are under £7,105). Student loan repayments are included if you select a plan.
Self-employed people pay Class 4 NI: 6% on profits from £12,570 to £50,270, and 2% above £50,270. Compulsory Class 2 NI ended from April 2024 (it is now voluntary if profits are under £7,105).
Treat a quarter of your yearly income tax and Class 4 NI bill as a savings estimate to put aside each quarter — it is not a payment to HMRC. Self Assessment is collected on 31 January and 31 July (two payments on account, each half of last year's bill, plus any balancing payment). In your first year the 31 January bill can be up to 150% of a year's tax (the whole first-year bill plus the first payment on account), so save extra before then.
Tax codes, prior-year balancing payments, changing profits, and allowance adjustments can change your final amount compared with a baseline estimate.
Yes. Open the equivalent employed salary page from each profit result to compare net take-home under PAYE assumptions.