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UK Calculations

Self-employed tax calculator

Work out Income Tax and Class 4 National Insurance on your trading profit. Also supports reverse calculation (profit needed for a target take-home), pension, and student loans.

Quick estimate

Enter your income details for a transparent UK tax estimate. This is not tax advice.

UK PAYE employment

Enter gross salary before tax. Class 1 employee National Insurance applies. Use payroll mode for a closer monthly/weekly payslip illustration.

Tax allowances

Custom tax code, Marriage Allowance, and Blind Person's Allowance adjust your tax-free amount before Income Tax is calculated.

Leave blank for standard 1257L (£12,570). Examples: 1383M (marriage received), 1188N (marriage transferred), K125 (K code).

Rates and sources

ItemSourceVerifiedStatus
2026/27 (6 Apr 2026 – 5 Apr 2027)GOV.UK2025-06-01requires verification
Tax code1257L
Income typeUK PAYE (Class 1 NI)
Default tax code1257L (assumed unchanged — requires verification)
Calculation modeAnnualised estimate

Personal Allowance: £12,570.00 · Effective rate: 24.4% · Marginal rate: 40.0%

Estimated take-home pay

£45,357.40

Gross income
£60,000.00
Income Tax
£11,432.00
National Insurance
£3,210.60
Effective tax rate
24.4%
Marginal tax rate
40%

Currency converter

Live reference rates between supported currencies. For illustration only — not for tax reporting.

Employed on PAYE? Use the salary calculator for Class 1 NI and payroll mode.