How to avoid scams and fake websites this French tax season
Emails from the tax authorities will only come from the domain @dgfip.finances.gouv.fr. Ignore any emails from different sources, especially if they contain errors.
Taxes on Side Hustle Income: Do You Have to File a Return? | Entrepreneur
"Even if you find yourself in a situation where you didn't set aside any money [for taxes], and now you're going to owe, still file as quickly as possible."