Can I claim training courses?

For UK sole traders. Checked against gov.uk on 4 July 2026.

Yes, to stay current.

Training that keeps existing skills up to date is claimable. Training for a brand-new trade is not.

Courses, certifications and renewals that maintain or update skills you already use in the trade are allowable: CSCS and CPCS renewals, first aid, refresher courses, a ticket that keeps you compliant on site.

Training to acquire skills for a new line of work is different: HMRC treats that as capital, not a running cost, so it isn't deductible. A plumber's gas-safety refresher is in; the same plumber's photography diploma is not.

Quick answers

Is a CSCS card renewal claimable?
Yes. Renewals and refreshers that keep existing trade skills current are allowable business expenses.

Can I claim a course to start a new business line?
No. Training to acquire skills for a new trade is not deductible for a sole trader; the allowable case is maintaining or updating existing skills.

Compliance first.Every figure checked verbatim against gov.uk, with the date on the page

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Sources: HMRC's SA103F Notes 2026 (the self-employment notes for the tax return) and HMRC's Business Income Manual (BIM35660). Checked on 4 July 2026.