Maryland Payroll Tax and Registration Guide

Use this checklist to make sure you’ve covered everything required to set up your account as a Maryland employer so OnPay can accurately file and pay taxes on your behalf: 

OnPay handles the filing of all state and local taxes for businesses in Maryland, including:

If you are an existing employer who has previously run payroll in Maryland, you likely already have the IDs and online accounts needed for OnPay to process your tax filings.

If you are a new employer in Maryland, you will need to register your business with the Comptroller of Maryland and Maryland Department of Labor. This must be completed for OnPay to be able to file and pay your Maryland taxes.

Maryland Central Registration Number (Tax ID)

Existing Maryland Employer: 

You can find your Tax ID on notices received from the Maryland Comptroller. If you cannot locate this number, please call the Comptroller’s office: 800-MD-TAXES (800-638-2937).

New Maryland Employer: Register with the Comptroller of Maryland 

• Register with the Comptroller of Maryland online. (Click “Begin registration” at the button of the page and submit the required information.
• The online registration process can take about 7 days for you to receive your Central Registration Number. After 5 days, you can also call (800) 638-2937 or email taxhelp@comp.state.md.us to receive your CRN sooner.

Unemployment Account Number, PIN, and Tax Rate

Existing Maryland Employer: 

• You can find your Unemployment Account Number on any previously filed quarterly report (Form DLLR/DUI 15/16). 
• You find your Unemployment Tax Rate in the “Contribution Rate” box on the Experience Rate Notice you receive from the Maryland Department of Labor. You can also look it up  online here. Employers typically have a rate of 2.3%, with a wage base of $8,500.
• If you have created an MD unemployment PIN, please provide OnPay with this PIN at hello@onpay.com.
• If you cannot locate this information, call the Maryland Department of Labor: (410)-767-2412.

New Maryland Employer: Register with the Maryland Department of Labor

• You will automatically be registered with the Maryland Department of Labor when you complete your registration online for the Comptroller of Maryland.
• You'll receive your account number and tax rate instantly once you have completed the online registration.
• New employers are typically assigned a rate of 2.6% (or 7.0% for construction companies), with a wage base of $8,500.

OnPay works with government entities on your behalf, reporting new hires to state labor departments, calculating tax rates, and filing financial reports. To do this effectively, you will need to add OnPay as your Third Party Agent and grant us Power of Attorney.

Third Party Administrator access

1. Download and complete this POA form
2. Log into your BEACON account
3. Under "Your Options," click Account Maintenance
4. Select Agent Assignment
5. Select Add Agent.
6. Search for our agent ID: MD8P2M and click Search
7. Click Select POA to upload your completed POA form
8. Assign the following roles:
   • Wage Submission
   • Payment Submission
9. Set the Access Begin Date for the date that you joined OnPay
10. Click Save

Power of Attorney

You will also need to grant us Power of Attorney and Reporting Agent Authorization for the Comptroller of Maryland by following the instructions in this article.