For VAT :
Companies have to declare and pay VAT returns on line if their turnover is higher than € 760,000. This amount will be €500,000 from October 1, 2010.
For CIT :
Spicofi is an authorized partner of the Tax Authorities.
We are allowed to electronically file your CIT returns, provided you have signed a contract for that purpose.
You may have access any time to the company’s account with the French Treasury, using the website : http://www.impots.gouv.fr/, unfortunately not in English yet .
For intra EU services :
From January 1, 2010, under EU directive TVA 2006/112/CE, French companies rendering services to companies established in another UE country and subject to reverse charge VAT have to declare their sales of services electronically.
This monthly filing has to be made on the French customs website.
However, the following activities, for which French VAT applies, are excluded from this obligation :
travel agents services ;
services related to a fixed property ;
passengers transportation ;
cultural, artistic, sport, educational, scientific, entertainment activities ;
on site eating or drinking ;
short term rentals ;
services not being taxed in the member state of the client.
Paper filing is accepted only for smaller size enterprises. Other companies have to declare electronically through the French Customs website (“service DES”).
This declaration has to be filed at least on the 11th on the month following maturity date, or the next Monday at the latest.
Data to be provided is total services invoiced and client’s intrastat VAT number.
French Customs website can help you. For English version, http://www.douane.gouv.fr/menu.asp ?id=498/
For Turnover Tax :
Only applicable to Companies which turnover is higher than € 760,000, amounts to 0.016% of turnover.
Compulsory on-line filing through http://www.net-entreprises.fr/html/c3s.htm/
(Unfortunately not available in English yet )
For social Contributions :
Compulsory Social Security Systems is now accessible in English : http://www.anglais.urssaf.fr/
Details available about non corporate foreign employers : http://www.urssaf.fr/images/ref_guide_ESEF_UK.pdf/
French Ministery of Foreign Affairs 
