The tax regulation in France has recently changed. As of January 2019, your income taxe should be paid directly by your employer.
Good to know:
For any question you can:
You need to declare the income you received in 2017 before May 17th 2018. Declaring your income does not mean you will necessarily have to pay the income tax.
You can download the declaration form on impots.gouv.fr or get it in your local tax office (service des impôts des particuliers, also called SIP).
After you filled in the form you will have to send it back to your local tax office or to the service des impôts des particuliers non-résidents if you left France.
Address: Service des impôts des particuliers non-résidents 10, rue du Centre TSA 10010 93465 NOISY-LE-GRAND Cedex Tel: 01 57 33 83 00 Email: firstname.lastname@example.org