January 23 is when the IRS starts accepting electronically filed returns.

Employers are required to issue income statements, such as W2s and 1099s to employees.

April 18 is the deadline to file individual and state tax returns. If you need more time, you must file an extension.

October 31 is the tax extension deadline. After this date, federal and state returns are generally considered late and if you owe tax, you may get a failure to file penalty.