The Schedule D Tax Worksheet might not be used to calculate your tax. It's only used if you have a non-zero amount on Schedule D line 18 or 19, or in some cases if you are filing Form 4952 for an investment interest deduction. Otherwise the Qualified Dividends and Capital Gains Tax Worksheet will be used if you have qualified dividends, capital gain distributions, or net long-term capital gain. See the paragraph at the top of the Schedule D Tax Worksheet in the Schedule D instructions.
