What expenses can a self-employed plumber claim?

What expenses can a self-employed plumber claim? A self-employed plumber can claim pipe, fittings, boilers and parts for jobs, tools, test kit, Gas Safe fees, relevant training, van costs and protective gear. In 2026-27, a basic rate taxpayer outside Scotland saves £26 per £100 claimed. Yes, if you are already trading. The law requires self-employed people doing gas work to belong to a class of persons approved by the Health and Safety Executive, and the government lists the Gas Safe Register for gas appliances. The fee is a cost of your trade. HMRC's own example says a gas boiler fitter training to install heat pumps is likely to be able to claim it, because they are keeping up to date with new technology in their industry. No. HMRC's CIS 340 guide says ordinary householders having work done on their own home are not contractors, so they pay your invoice in full. Read the full answer, with every source, at rightotax.co.uk.