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 Question Thank you! Oops! Related Content Best-Performing Asset Classes Bonds may outperform stocks one year only to have stocks rebound the next. Tax Freedom Day Assess how many days you'll work to pay your federal tax liability. Why Medicare Should Be Part of Your Retirement Strategy How Medicare can address health care needs in your retirement strategy.