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 How Women Can Prepare For Retirement Are women prepared for a 20-year retirement? Social Security Taxes Estimate how much of your Social Security benefit may be considered taxable. Emerging Market Opportunities What are your options for investing in emerging markets?