Hi I am a self employed electrician and I have recently been approached by a company recommending that I register for flat rate tax. They have said that if I do so, I should be able to claim about £4k. My income is based on invoices for my labour from companys (about £25k pa) and I dont really have any expenses other than travel and subsistence. I this too good to be true ? What are the downsides ? Thanks for any replies which would be appreciated, or do you suggest that I get some accountancy advice ?