You don't mess around with the IRS either.

I thought Finland had the highest tax rate. A Finnish person with a sort of average job, like a schoolteacher, pays over 50% in taxes. That's not the marginal rate on the last few dollars. It means if you make 10,000, you get less than 5000.

I once had a professional tax preparer refuse to do my taxes when he learned I'd worked overseas and had to file the exemption form.