How much of an invoice is really yours
When you collect an invoice, part of it is not yours: the VAT belongs to the Tax Agency, and the income-tax withholding has already been paid by your client on your behalf. What remains is the base minus the withholding, and from that you will still owe the income tax the withholding does not cover, your self-employed fee and your expenses. This calculator helps you avoid spending money that already has a destination.