Sole Trader Tax Calculator

Self-employed income (before expenses)

Deduct for expenses using

Allowable expenses

Anything you spend wholly for the work — tools, fees, phone, travel.

Other taxable income (optional)

A salary or pension that uses your tax-free allowance and bands first.

Figures stay in your browser — nothing is sent to a server. Estimates for the 2026/27 tax year, for information only, not tax advice.