What expenses can a self-employed gas engineer claim?

What expenses can a self-employed gas engineer claim? A self-employed gas engineer can claim Gas Safe registration, ACS assessments, analyser calibration, parts, tools and van costs. On a 2026-27 profit in the basic rate band, each £100 claimed saves £26 (outside Scotland). Yes. A self-employed person must be in the class of persons approved by the Health and Safety Executive, in practice the Gas Safe Register, before doing gas work, so the fee is a cost of the trade. Usually, yes. HMRC's manual allows training that updates skills you already use in your business, and ACS assessments and reassessments keep your existing gas work current. HMRC's own example says yes. A self-employed gas boiler fitter training to install heat pumps is keeping up with new technology in the same line of work, so the course is likely to be allowable. Read the full answer, with every source, at rightotax.co.uk.