In the case of a taxpayer other than a corporation, there is hereby imposed (in addition to any other tax imposed by this subtitle) a tax equal to 5.4 percent of so much of the modified adjusted gross income of the taxpayer as exceeds $1,000,000. -- Section 59C(a) page 337 H.R. 3962 (PDF — 3270 KB) or CNN.comThe surcharge would be applied before the gambler could deduct any offsetting losses. I verified this with Marissa Chien, co-author of Tax Help for Gamblers. For high-level slot players, it is not difficult to rack up W2-G forms in the millions per year. Most of these players will still have a net loss on an annual basis. Past the million point in gross income, the player will pay a 5.4% tax on any win of $1,200 or more, even if there is a net loss for the year. This is just my opinion, but I think that isn’t fair. If we must tax gambling winnings (which they don’t in Canada), it should be on the net, not the gross winnings, on an annual basis. Should this become law, it will ruin high-level slot play in this country.