Pennsylvania Compliance and Regulatory Resources

Withholding Registration

Employers are required to have an active Pennsylvania State Withholding account to file electronically with the Pennsylvania Department of Revenue (DOR).

Paychex must be authorized as the Third-Party Administrator (TPA) on the account for updating returns and payments on your behalf.

Register new business

1. Go to the Pennsylvania Online Business Tax Registration page.
2. Complete the application.
3. Your application may take 2 to 10 days to be processed for your withholding, unemployment insurance, and workers’ compensation accounts. You should receive your account / license / registration details and account number(s) by email.
   • Withholding ID Number Format: XXXXXXXX (8-digit number)
4. 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.
5. 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)

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

When there has been a change to an original quarterly return or a return needs to be filed after the due date, Paychex will request TPA access to your account. You’ll receive an email notification from myPath. Follow these instructions to approve the TPA request:

1. Log in to myPATH.
   • Refer to the DOR Requesting Account Access Video for additional assistance.
2. Select the Action Center tab.
3. Select the Manage Access link in the You have a new account access request tile.
4. Choose file and/or pay from the Access Level dropdown and click the Grant checkbox.
5. Select Submit.

Paychex will receive an email notifying us you have granted the request for access.

Additional resources

• Pennsylvania DOR contact information
• Outreach & Education for DOR guides and videos
• Information Required for Registration

Philadelphia Withholding Registration

Employers are required to have an active Philadelphia Wage Tax account number to file electronically with the City of Philadelphia.

Paychex must be authorized as the Third-Party Administrator (TPA) on the account for updating returns and payments on your behalf.

Register a new business

1. Go to the Philadelphia Tax Center.
   • Refer to the First-time log in for NEW taxpayers video for assistance.
2. Scroll down and select the Register a New Taxpayer link.
3. Complete the application.
4. A confirmation letter containing your account number will be mailed and may take 5 to 7 business days to arrive.
   • Philadelphia Tax Identification Number (PHTIN) Format: XXXXXXXXXX (10 digits)
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)

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

If there has been a request made to submit an updated quarterly return or file a return to the agency after the due date, you’ ll be contacted to approve Paychex’s TPA access request. Approving the TPA request can be completed in two ways:

1. You’ll receive a letter in the mail from the City of Philadelphia about the Paychex request.
   • Respond to the email that you have received from the Paychex team email with the Letter ID.
   • The Letter ID can be found in the upper right corner of the letter.
2. You can log into your Philadelphia Tax Center account.
   • Navigate to your Action Center and approve the pending request.

Additional resources

• Philadelphia contact information
• Philadelphia Tax Center FAQs and Resources

State Unemployment Insurance (SUI) Registration

Employers are required to have an active Pennsylvania state unemployment insurance (SUI) account number to file electronically with the Pennsylvania Department of Labor and Industry (L&I)

Paychex must be authorized as the Third-Party Administrator (TPA) on the account to make adjustments wage detail reporting, agency returns, and payments on your behalf.

Register new business

1. Go to the Pennsylvania Online Business Tax Registration page.
2. Complete the application.
3. Your application may take 2 to 10 days to be processed for your withholding, unemployment insurance, and workers’ compensation accounts. You should receive your account / license / registration details and account number(s) by email.
   • SUI ID Format: XX-XXXXX (7-digit number)
4. 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.
5. 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)

PA L&I requires Professional Employer Organization (PEO) entities operating under a co-employment agreement to provide separate Powers of Attorney (POAs) and Third-Party Administrator (TPA) information from those required for non-PEO employers.

Please contact your Paychex Service Professional to confirm whether you should follow the PEO or non-PEO client instructions and use the appropriate TPA instructions outlined below. PEO clients should also confirm the Agent ID required for the TPA instructions.

For non-PEO clients:

1. Go to UCMS and log in to your account.
2. Select Employer Profile.
3. Select Manage Representatives.
4. Assign Paychex using the TPA ID: 3976403402.
5. For User Privileges, check the privileges for filing and reporting.
6. Select the Active circle and click Save.
7. Take a screenshot of the Confirmation screen and email it to your Paychex Service Professional.

For PEO clients:

1. Go to UCMS and log in to your account.
2. Select Employer Profile.
3. Select Manage Representatives.
4. Assign Paychex using the TPA ID confirmed by your Paychex Service Professional.
5. For User Privileges, check the privileges for filing and reporting.
6. Select the Active circle and click Save.
7. Complete the Power of Attorney (POA).
8. Take a screenshot of the TPA Confirmation screen and POA then email the documents to your Paychex Service Professional.

Reactivate a business account

If your business is considered “Liable for Unemployment Compensation Tax” and requires reactivation, follow these steps:

1. Go to UCMS and log into your account.
2. Select Employer Profile.
3. Select Profile Maintenance.
4. Scroll to the bottom of the screen and select Reactivate.
   • For Date Wages Resumed, use the current quarter date.
5. Authorize Paychex as your Third-Party Administrator.
   • See Designating Paychex as your Third-Party Administrator (TPA) for instructions

Additional resources

• PA Department of Labor and Industry contact information
• Information Required for Registration
• UC System Resources