Invoicing 1500 eur/month as a company, minus operation costs, minus taxes, gives 800-850 eur/month, which is barely livable. Lawful minimum is about 750 eur.
Swizec is right, there are ways to incorporate to pay less tax, but not everyone can go that way.
Swizec is right, there are ways to incorporate to pay less tax, but not everyone can go that way.