I've just got into the self employed/self assessment loop. I don't know which way is up after reading so much bumph. HMRC site just takes you round in circles. Any pointers would be greatly appreciated. I shall be using Cash basis tax format. So does anyone know :- what I can claim for, how much I can claim and how far back I can claim it. I'm thinking of testers, clamp meters, power tools etc and a laptop and anything else you can think of. Thankyou all in advance.