I'm no tax attorney and don't know the tax code. But yes, two years from now you'll undoubtedly pay more than this year. But regardless of that you will pay 35-40% on short term gains tax as compared to 15% for long-term gains tax. Those percentages will probably remain in place, or thereabout. So either way, holding your shares for 12 mos. or more will be a much, much better deal for you in the long run, regardless of your income tax bracket.