Self-Employed Tax Calculator
Calculate income tax and Class 4 National Insurance on your self-employed profits for 2025/26.
£
£
Office costs, travel, stock, insurance, etc.
Taxable profit
£45,000
You keep (yearly)
£36,568
Monthly
£3,047
Tax breakdown
Turnover£50,000
Expenses-£5,000
Taxable profit£45,000
Personal allowance£12,570
Income tax-£6,486
Basic Rate (20%)-£6,486
Class 4 NI-£1,946
Main Rate (6%)-£1,946
Net profit (you keep)£36,568
Your rates
Effective tax rate
18.74%
Total tax & NI
£8,432