The Facts About Income Tax Want to be Smarter With Your Money? Join our mailing list and get news and info to support your financial goals. First Name Last Name Email Address Thank you! Oops! Millions faithfully file their 1040 forms each April. But some things about federal income taxes may surprise you. Share | Related Content Home Mortgage Deduction Use this calculator to assess the potential benefits of a home mortgage deduction. 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.