Tax Day Trivia: Unwind With IRS Secrets! What is the deadline for filing federal income tax returns in the United States? March 31 April 15 May 1 June 30 None Which IRS form is commonly used for individual income tax returns? Form 1040 Form 1099 Form W-2 Form 8862 None What does the acronym "IRS" stand for? Internal Revenue Service International Revenue System Income Reporting Service Internal Revenue Source None What is the penalty for filing a federal tax return after the deadline without a valid extension? 5% of the tax due per month 1% of the tax due per day $100 flat fee No penalty None Which of the following is a tax credit designed to support education expenses? Child Tax Credit Earned Income Tax Credit (EITC) Lifetime Learning Credit American Opportunity Credit None Time's up Most Popular Most Popular