UK Freelancer take-home calculator

How freelancer take-home is calculated

A self-employed person pays both the employee and employer side of social insurance, has no automatic tax withholding, and often qualifies for self-employment-specific deductions. The calculator estimates net pay after all of these.

Worked example (US, sole proprietor, $80,000 net business income)

• Self-employment tax: 15.3% on 92.35% of net = ~$11,304
• Half of SE tax is deductible from income tax base: $5,652
• Adjusted gross income: $80,000 − $5,652 = $74,348
• QBI deduction (simplified): ~$14,870
• Taxable income (post-standard deduction): ~$44,478
• Federal income tax: ~$5,247
• Total tax: ~$16,551 | Take-home: ~$63,449 (79.3% of gross)

A salaried employee on $80,000 keeps roughly $63,000–$64,000 in the same scenario — similar net, but the self-employed person paid more in SE tax and gained more in deductions.

What's different per region

• US: 15.3% SE tax (12.4% Social Security up to $168,600, 2.9% Medicare uncapped, +0.9% Medicare surtax over $200k). Quarterly estimated payments required. QBI deduction often available.
• UK: Class 2 NI (flat, small amount) + Class 4 NI (6% / 2% bands). Self-Assessment tax return filed January each year.
• Canada: CPP self-employed at full 11.9% (both halves), additional CPP2 above the basic ceiling. No EI unless opted in. Quarterly tax instalments above a threshold.
• Australia: No automatic super contribution — must self-fund. GST registration required if turnover > $75,000. Income tax bands the same as employees.

Common mistakes

• Not setting aside tax. Treat 25–35% of every payment as not-yours. A separate savings account makes this easy.
• Missing quarterly estimated payments (US). Underpayment penalties accrue if you owe more than $1,000 at year-end without quarterly payments.
• Missing the home-office deduction. If part of your home is used regularly and exclusively for the business, claim it — but only the portion that genuinely qualifies.
• Mixing personal and business finances. A separate business bank account and credit card massively simplify accounting and audits.
• Forgetting legitimate business expenses. Mileage, equipment, software, professional development, insurance, accounting fees, marketing — all deductible.

When to consider incorporating

At roughly $50,000–$80,000 of net business income (US), electing S-corp taxation can reduce self-employment tax by splitting income between reasonable wages and distributions. The trade-off is added compliance — payroll filings, separate corporate tax return, registered agent. Talk to an accountant before electing.

UK, Canada, and Australia have different incorporation economics. Generally, incorporate only when net income consistently exceeds the threshold where tax savings clearly outweigh roughly $1,000–$2,500/year in additional compliance costs.

What this calculator doesn't cover

• Multi-state US filings, foreign earned income exclusion
• UK IR35 / inside-vs-outside contractor status
• Canadian incorporation tax planning
• Australian super contributions in detail
• Specific deductions (vehicle, home office, equipment depreciation)
• GST/VAT registration thresholds and filing