Oklahoma - W2 State Filing Requirements

The state requires the filing of Form W-2 if wages were paid to Oklahoma employees or if income tax was withheld during the year.

Oklahoma State ID Format:
 

• 3 characters and hyphen followed by 8 digits and hyphen followed by 2 digits (Eg: WTH-99999999-99)

Note: The state also accepts Federal TIN as the state ID number. (Eg: 999999999)
 

Filing Criteria and Requirements

Criteria 1: Even if there is no Oklahoma State Tax Withholding

• Filing Method: Direct State Filing

  • You must file a W-2 directly with the state.

• Additional Form Required: Not required

• Deadline: January 31, 2025

For more information about Oklahoma’s W-2  filing requirements, click here