Making Your Tax Bracket Work Have you explored all your options when it comes to managing your taxable income? Share | Have A Question About This Topic? Name Email Address Question Thank you! Oops! Related Contents The Facts About Income Tax Millions faithfully file their 1040 forms each April. But some things about federal income taxes may surprise you. Understanding Marginal Income Tax Brackets An inside look at how marginal income tax brackets work. Capital Gains Tax Estimator Use this calculator to estimate your capital gains tax.