Information on the capital gains tax rate is found on the direct website of the IRS under tax topic 409. Additional information may be found under publication 550, Investment Income and Expenses, and publication 554, Sales and Dispositions of Assets, according to the IRS.
If an individual has taxable capital gain, it may be necessary to refer to publication 505 for important information. Capital gains are either short-term or long-term in nature. When an asset is held for under a year it is short-term, while assets held over a year are considered long-term. Net short-term capital gains are subject to taxation as income, according to the IRS.