Having a cash business is evil goy. You must pay your taxes. Paying taxes is how you become a real man. I've also heard the IRS will take you to a black site where you will lose your ass virginity if you don't. I know it seems like every non is scamming the US government but that's a conspiracy theory. The IRS would never allow that to happen. Do not be led astray, pay them a little extra just to be safe.