A starter guide for small side gigs: how to think about profit, records, and using an estimate without false precision.
Most side gig confusion comes from mixing turnover and profit. This calculator uses annual profit after allowable expenses.
You do not need a complex system on day one. A basic record of income and business costs can produce a profit number.
Ignoring record keeping, or assuming small income means no obligations. Use GOV.UK to confirm what applies.
Not tax advice. This page is an educational guide. For official rules, verify the sources below.
Last updated: 2026-04-20
No. It can be used for small gigs, as long as you can estimate profit.
No. Use GOV.UK guidance to confirm obligations.
Estimate, plan a buffer, and verify official rules when you file.
For official rules and definitions, verify with the references below.