When I first heard about the zero percent tax bracket for long-term capital gains, I didn’t believe it. Mind you, I’m not talking about Roth IRA withdrawals, which are always tax-free. I’m talking about capital gains from stocks held in a taxable  brokerage account . The IRS not taxing this money sounded too good to be true. But it is true—the IRS really does let some of your investment gains be taxed at zero percent. Long-term capital gains actually have their own set of tax