Calculate Tax on Salary and Side Income
Estimate how employed income and self-employed profit combine for tax, National Insurance, and self-assessment planning.
Built for UK employees, freelancers, side hustlers, and hybrid earners by RR Accountants.
Practical guidance for real-world mixed-income situations.
Tax Year & Region
Employment Income
Your income from employment before tax.
Self-Employed Income
Your side income, freelance income, or sole trader income outside PAYE.
Self-Employed Profit (auto-calculated)
£28,000.00
Other Settings
Enter your salary and side-income details to estimate your combined tax position.
What this calculator helps you understand
Combined Tax Position
See how salary and self-employed profit interact for tax.
Side-Income Impact
Understand how freelance or side-hustle earnings can increase your overall liability.
Expenses Matter
Reduce self-employed profit by including allowable business expenses.
Self-Assessment Context
Use the estimate as a planning tool before filing.
This tool provides a practical estimate based on selected assumptions. Actual outcomes depend on records, tax code, allowances, income mix, and wider personal circumstances.
Need help with your salary and side-income tax?
RR Accountants helps employees, freelancers, and side hustlers understand self-assessment, track expenses properly, and avoid surprises when extra income starts affecting tax.
Get Expert Help
Frequently Asked Questions
Need help with self-assessment, side income, or tax planning?
RR Accountants supports employees, sole traders, freelancers, and growing businesses with self-assessment returns, bookkeeping, VAT, payroll, and practical tax advice.