(CNN)Here's some background information about the annual income tax filing deadline in the United States. April 18, 2016 is the deadline to file 2016 income tax returns. The deadline is later this year due to the celebration of Emancipation Day on April 15.
Individual Income Tax Returns Filed
Total Receipts: 148,840,642
Tax Professionals: 78,074,329
National Defense 16%
Social Security 24%
Medicare, Medicaid, etc. 25%
Safety Net Programs 10%
Interest on Debt 6%
Benefits for Veterans & Federal Retirees 8%
Transportation infrastructure 2%
Science and medical research 2%
Non-security international 1%
All other 3%
1862 - During the Civil War, the IRS is born when President Abraham Lincoln and Congress create the Commissioner of Internal Revenue and enact an income tax to pay war expenses. The first income tax levied 3% on incomes between $600 and $10,000 and 5% on anything over $10,000. This income tax lasts until 1872.