The Facts About Income Tax Millions faithfully file their 1040 forms each April. But some things about federal income taxes may surprise you. Related Content Countering Counterfeit Currency Combating counterfeiting remains core to preserving the integrity of the nation’s money. Home Mortgage Deduction Use this calculator to assess the potential benefits of a home mortgage deduction. Behavioral Finance An amusing and whimsical look at behavioral finance best practices for investors.