Seasonal employment in France

I will be working in France over the winter and my employer has asked for proof of my tax status in the UK. I don't have a P60 here yet so trying to get a Certificate of Tax Domiciliation. How do I get one in advance of starting the work to reduce the payment into the social security system in France ? Any help would be really appreciated as Im struggling a bit! Thanks

Hi,

It would be a certificate of residence that you would request but this cannot be issued for a future date. You can see guidance here:

How to apply for a certificate of residence to claim tax relief abroad

Thank you.