Hi, I was in the same situation as yourself and the easy option was to use a portage company. I work with a company in Limoges and every month they invoice my old employer for the work I carry out for them. Compared to my UK salary I was prepared to take a 25% pay cut when I came to France, but it was well worth it. The portage company takes his cut (up to 10%), pays all the company and social taxes and what is left over is my monthly salary. I take home about 50% of the oroginal invoiced amount. Whilst 10% sounds like a lot, I prefer not to waste time filling in endless forms but spend the time working, pay the fee and not spend time worrying about unforseen bill requests that seem to turn up in peoples post for cotisations that they aren't prepared for.