What is a tax ID? Do I really need one?

Your business tax ID allows government agencies to identify your business for tax purposes. Tax obligations vary by jurisdiction, so whether you need a tax ID depends on the state your company operates in. If your business operates in more than one state, you will need a tax ID number for each state and/or local jurisdiction.

Register your business in three easy steps

Getting your state or local tax IDs can be complicated. So, we made it easy.

Collect your information

• Have your company information (name, address, etc.), federal Employer Identification Number (EIN), and credit card handy.

Answer a few simple questions

• Sign up online and tell us about your
• business to get started.

Let ADP handle the rest

• Our payroll tax experts prepare and submit your application to the requested tax agencies, working with you along the way.

Quick, reliable registration backed by ADP

Our payroll tax experts are here to ease the burden of the tax ID registration process by helping you save time, avoid administrative headaches, and stay compliant. But that's not all. When you partner with ADP, you can also get a one-stop shop for your payroll & HR needs so you can confidently grow your business. 75+ years We've provided tax services to businesses like yours for over 75 years. 1 in 6 workers paid ADP pays 1 in 6 workers in the United States – that equals more than 25 million people. $2.7 trillion We moved $2.7 trillion of US payroll and taxes for our clients and their employees in 2022.