Hi. Can anyone tell me if i can claim for the petrol used for window cleaning as tax deductable ? If so can i only claim the VAT amount or the whole amount ? Ive got a couple of tax books but can't seem to find the simple answer !!! I do commercial stuff quite a way from home. Ive kept all my petrol receipts. I'm not VAT registered as i don't turn over the £50,000 + for that . Can anyone clarify for me?