France's Constitutional Court has granted the country's tax authorities permission to search social media postings for evidence of French residents' undeclared income.

In December 2019, the government enacted laws to allow the tax authority to conduct a three-year project to collect online information as part of a tax-enforcement drive. Possible lines of enquiry, described by budget minister Gérald Darmanin, would be to check on people who regularly post photos taken in France while claiming not to be French tax residents, or ...