Trading allowance checker

This tool assumes:

• The trading allowance gives £1,000 of tax-free trading income per tax year.
• If gross trading income is £1,000 or less, you generally do not need to register or report it (subject to other reporting obligations).
• If gross income is over £1,000, you can either deduct actual allowable expenses OR the £1,000 allowance — not both.
• The allowance is per person, not per trade — combine all self-employed income against the single £1,000.
• The allowance cannot create a loss; if expenses exceed income, deducting expenses gives the loss, not the allowance.

Primary sources:

• HMRC: Tax-free allowances on property and trading income
• HMRC: Self Assessment tax returns