Both freelancing and ZZP don't have a legal definition. It's just a business. In these cases a business of one. Without being incorporated, so if you screw up,

Both freelancing and ZZP don't have a legal definition. It's just a business. In these cases a business of one. Without being incorporated, so if you screw up, creditors can come after your personal bank account. So there's nothing to "tolerate" but money. ;)