Where do I find the control number, box "d" on my W-2?

[IreneS · Accepted solution]

Your employer may not use a control number (box d) -- it is totally optional.  An employer sometimes uses the control number to identify individual W-2 forms. The IRS does NOT require an employer to enter this, so it may be blank.

[kathy443]

Turbo is asking me to put in control number from box d.  I do not have a box d, for filing

[kathy443]

May I omit this

[nmorales2020]

I have only at letter N

[Whip609]

Hello

[Mike9241]

box 10 can be left blank. 

[JamesG1]

A Control Number (box D) is used by many payroll departments to uniquely identify a W-2 in their system.

If your W-2 doesn't have one, box D can be left blank.

See this TurboTax Help.