In wage garnishment situations, the IRS has a table that they refer to (IRS Publication 1494) – that determines how much money they will leave in your paycheck per week. Many people believe that the IRS takes a certain percentage of your pay, which is simply not true.
The only factors that determine how much of your paycheck is left over for you and your family after a garnishment is your marital status, the number of exemptions that you claim and whether you’re 65 years old and/or blind.
For example, if you’re married and you file a joint return and claim 2 tax exemptions, the IRS will allow you to keep $336.54, regardless of how much you earn. It makes no difference if you make $500/week or $5000/week. You take home $336.54 and the IRS keeps the rest until your tax debt is paid off.