You'll just want to convince your real GM to do it differently. For example, let the IRS assume you're simply earning enough for your lifestyle, so a 20h/week job for Low and a 50h/week job for Middle, and tax you at 2500 / 6000 income before taxes. Let them get really suspicious if you're claiming to be a Squatter and only got that little income.
Remember, these are the rules for Missions. Here, there is no leeway, because a GM doesn't have the time. Yes, you're supposed to pay taxes as SINner. But you can talk things over with your GM in normal campaigns.