Has a Letter in the Name
Every job you worked has one
W-2 Form
Annual tax return
1040
Withhold federal income
W-4
Non-employed ways of income
1099
1040-ES
Monthly installment plan if you can't pay taxes in full
9465
Every new hire needs one
I-9
federal income, social security, and Medicare taxes withheld from paychecks
941
Applying for an ITIN
W-7
Request of transcripts
4506-T