Oklahoma Compliance and Regulatory Resources

Withholding Registration

Employers are required to have an active Oklahoma state withholding account number to file electronically with the Oklahoma Tax Commission.

Paychex must be authorized as the Third-Party Administrator (TPA) on the account for adjusting wage detail reporting, filing quarterly, and payments on your behalf. The Oklahoma Tax Commission refers to this as third-party access.

Register new business

1. Go to OKTap.
   • Refer to this OK New Business Video for assistance.
2. Under the Business section, select Register for a Business.
3. Select Business Registration.
4. Complete the application.
5. You’ll receive the confirmation page containing your state withholding account number. Print and save this page.
   • Tax ID Number Format: WTHXXXXXXXXXX (WTH and 10-digit number)
6. Enter your new account number in Paychex Flex^® to ensure your account is updated and email your Registration Confirmation document to your Paychex Service Professional.
   • Refer to the Updating Tax Agency IDs in Paychex Flex instructions to enter the information in the application.
7. Authorize Paychex as your Third-Party Administrator.
   • See Designating Paychex as Your Third-Party Administrator (TPA) for instructions

Designating Paychex as your Third-Party Administrator (TPA)

1. Complete the Power of Attorney (POA) Form.
2. Email your registration confirmation and POA form to your Paychex Service Professional.

Important: This section only needs to be completed if Paychex needs to file amended returns or contact the agency on your behalf for Oklahoma state withholding.

Paychex requires Third-Party Administrator access so we can submit late or updated returns and payments on your behalf. Follow these instructions for the TPA request process if you’ve been notified to grant Paychex TPA access to your account:

1. Go to OKTap and login.
2. On the Navigation panel on the left, select Manage My Profile link in the top right corner.
3. In the More Tab, click the Add Third-Party Access.
4. Enter a passphrase of your choice. Click Next.
5. Click Submit.
6. Reply to the email from the Paychex team requesting TPA access with the passphrase you have chosen.
   • Once the Paychex team has received the passphrase, a TPA request will be sent to your OKTap account for your approval.
7. Once you have received the TPA request, go to OKTap and login.
8. Click the More tab.
9. In the Access group, click the Manage Additional Logons link.
10. Click the link for Paychex’s TPA request.
11. Click the Manage button in the top right corner.
12. Select Grant Access next to the Withholding -Wage Tax account to establish the security setting for the account.
13. Notify the Paychex team requesting the TPA Access that the request has been approved.

Additional resources

• Oklahoma Tax Commission contact options
• Oklahoma Tax Commission videos

State Unemployment Insurance (SUI) Registration

Employers are required to have an active Oklahoma state unemployment insurance (SUI) account number to file electronically with the Oklahoma Employment Security Commission (ESC).

Paychex must be authorized as the Third-Party Administrator (TPA) on the account for adjusting wage detail reporting, filing quarterly, and submitting payments for an active account.

Register new business

1. Go to the EZ Tax Express site.
2. Choose the Create New User ID (Registration) option.
3. Complete the application.
4. You’ll receive a confirmation page containing your SUI account number. Print and save this page.
   • Tax ID Number Format: XX-XXXXXXX (9-digit number)
5. Enter your new account number in Paychex Flex^® to ensure your account is updated and email your Registration Confirmation document to your Paychex Service Professional.
   • Refer to the Updating Tax Agency IDs in Paychex Flex instructions to enter the information in the application.
6. Authorize Paychex as your Third-Party Administrator.
   • See Designating Paychex as Your Third-Party Administrator (TPA) for instructions

Designating Paychex as your Third-Party Administrator (TPA)

1. Complete the Oklahoma Power of Attorney (POA) Form.
2. Go to Oklahoma OESC Employer Portal and login.
   • Create an account if needed.
3. On the navigation panel on the left, select Manage TPA Relationship.
4. Enter the Paychex federal ID: 161124166 and select Search.
5. Once the Paychex name appears, select Grant Access.
   • Another box will appear, select the Grant Access button on the box.
6. At the top of the screen, a message should indicate, “Permissions granted successfully”.
7. Email your registration confirmation, a screenshot of the TPA access, and POA form to your Paychex Service Professional.

Additional resources

• Contact information for the OESC
• New OESC Employer Portal Launch