[namdnay]

In France (and Germany too apparently), if you are found out - usually by a random tax audit - they will ask you to back-pay employee and employer contributions on the money that you received (so about 60% total)

the issue isn't really the company, as you pointed out, they are not in France, they're not subject to French law. The issue is that as a French tax resident, if you are meeting the criteria for employment (single company representing more than 80% of your revenue, everyday work relationship that is based on subordination etc etc), then you have to pay employment contributions

Why? For the same reason as every other mandatory insurance. If everyone who has a stable, well-paying job is skipping out of employment contributions, it makes the contributions for the others even higher, pushing more people out of the system etc until you have no-one left with employee protections

[toast0]

It sounds like if the single member company invoices the foreign company and then pays you as an employee, with all the payroll deductions, that's fine?

That seems reasonable, the only thing is that you have to compare the foreign company invoice rate as a gross payment to salaries offered by domestic companies which are generally quoted as net payments? As I understand it, European salaries are usually quoted fully net --- you get exactly that amount, in contrast to US salaries which are mostly gross, there are a lot of deductions that start from the quoted amount, but some that are employer side and not usually quoted.

[namdnay]

indeed: https://news.ycombinator.com/item?id=32320295

european salaries are usually quoted "semi-gross" (or semi-net, according to your optimism). there is an arbitrary distinction between employer contributions and employee contributions, the figure you will be given is after the former, before the latter. and always before income tax of course (because that isn't solely based on your salary)