Financial
January 31
Deadline for employers to mail W-2s to their employees (either by paper or electronically)
November 10
Deadline for filing federal and state income returns that have received extenstions
W-2
Received in January, there is one of me for every job I work, you can tell how much you earned and how much you paid taxes by reading me
April 1
Last day e-file or mail federal and state income tax forms or to request
December 31
Your earnings for the year are final after this date
January 1
Your earnings for the year begin on this date
1040
I am completed in April, anyone can use me, beware there is a LOT to fill out
1099
I am received in January, you get me if you are not an employee but we're paid in company, you probably didn't get taxes withheld if you got me so you may have a big tax bill coming up
W-4
I am received whenever you start a job, you lost information about yourself and your family on me, I determine how much money gets taken out of paycheck
I-9
I am received whenever you start a job, you use me to prove that you are eligible to work in the U.S., you must provide forms of identification when submitting me
January 1
First day you can mail in federal and state paper form tax returns for the previous year, although you likely will not yet have your necessary W-2 or other documents to do filing