The Facts About Income Tax Millions faithfully file their 1040 forms each April. But some things about federal income taxes may surprise you. Have A Question About This Topic? Name Email Address Message Thank you! Oops! Related Content Countering Counterfeit Currency Combating counterfeiting remains core to preserving the integrity of the nation’s money. My Retirement Savings Estimate how long your retirement savings may last using various monthly cash flow rates. How Financial Professionals Are Compensated Read this overview to learn how financial advisors are compensated.