Box D is on the top left of your W-2 form, next to the box containing your Social Security Number.
Form W-2 (wage statement) Box D is a Control Number field. It is usually located below the Employer's Name and Address (on the top left side) of your W-2 form.
The Box D Control Number is a code that identifies your unique W-2 form in your employer's records. This number is assigned by the company's payroll processing software.
- Please note that not all W-2s (or employers) will include a Box D number.
If you do not have Box D or Control Number on your W-2, please see the following TurboTax FAQ:
https://ttlc.intuit.com/replies/4417180
