We have progressive tax rates so you’ll be paying less than 20%. A simple example using your single week of work would have you paying 0% for day 1, 5% for day two, 10% for day 3, 15% for day 4, and 20% for day 5. Assuming you make $100 a day/$500 a week, this would put your tax bill at $50 for the week or 10% even though you hit the 20% bracket.