As promised Nicolas Sarkosy's government announced on the 12th July 2007, that the proposed Tax Relief on Mortgage Interest law had been passed.
The most import point concerning this new law is that you are only eligible if the property concerned is your main residence, and that the Act de Vente was not signed before the 6th May 2007. If you meet these two criteria then you will be entitled to a reimbursement of up to a maximum of 20% (40% for the 1st year) of the interest paid on first 5 years of your mortgage against your Income tax bill.
For a breakdown of how this will effect a mortgage of €100,000 and €200,000 visit http://www.cbanque.com/credit/interets-emprunts-historique.php (In French but tables are easy to understand)
Unfortunately as stated this is not retrospective, but if you are in the process of buying your main residence make sure you check with your French lender that you are getting the benefit.
This law already has a few proposed amendments, and these details were only correct at the time of writing (19/09/07). Information is only provided as a guide and, if you need assistance in this area you are strongly advised to seek the help of a specialist in this field as each individual case is different.
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Provided by Steven Grover, English Chartered Institute of Insurance qualified expatriate based in Troyes.