Our work is reader-supported, meaning that we may earn a commission from the products and services mentioned.

Do I Need a State Tax ID If I Have An EIN?

Do I Need a State Tax ID If I Have An EIN?

Advertising Disclosure


Do I Need a State Tax ID If I Have An EIN?

When starting a business, there are lots of applications and numbers you may not be familiar with. Two numbers that are often mixed up are the state tax ID number and EIN.   As a new business owner, you’ll want to know what these different numbers are and what they are used for.  Here, we will explain the difference between the state tax ID and EIN.

What is a State Tax ID Number?

Most businesses selling goods and certain services or hiring employees will need to get a state tax identification number.  In some states, every business will need to apply for one.  Check out guide for starting a business in your state to see if a state tax ID number is required for your business.   

State tax ID numbers are issued by the Department of Revenue or similarly named agency in the state where the business is located.

The purpose of a state tax ID number is for reporting taxes at the state level and is usually associated with sales taxes or income tax withholding for employees.  This number also allows a retailer to enroll or obtain a Resale Certificate, Sales Tax Permit, or Seller’s Permit (all refer to the same thing), which allows for tax-exempt status.  Tax exemption allows a business to purchase goods that will be resold at retail.  When those goods are sold to the eventual customer, the retailer collects the sales tax.

If the business has nexus in other states, which basically means having a physical presence, that business may also need to obtain state tax numbers in other states.  Nexus can come from having employees working in other states or products shipping from warehouses in other states.  This can include drop-shipped products, too, but it is dependent on the state and vendor.

What is an EIN?

An Employer Identification Number (EIN), also known as a Federal Employer Identification Number or FEIN, is a unique nine-digit number issued by the IRS (Internal Revenue Service).  An EIN is similar to a Social Security Number (SSN) or Individual Taxpayer Identification Number (ITIN) that identifies certain businesses.   

Any small business that pays employees or is a partnership or corporation is required to obtain an EIN. LLCs that elect to be taxed as a partnership or corporation are also required to get an EIN.  EINs can be obtained from the IRS at no cost from the IRS website.  Also, here is more information about applying for an EIN.

Not all business entities need an EIN.  A sole proprietor or single-member LLC with no employees can obtain an EIN but is not required to do so.  Instead, they can just use the owner’s Social Security Number.  In this instance, the EIN is more for tax purposes and won’t mean much until preparing year-end income tax returns.

Companies will use the EIN when filing income tax withholdings and employment tax returns.  Banks will often require a new business to have an EIN before opening a business bank account.  In addition, the EIN is used when applying for loans or credit cards, applying for business licenses, and accepting credit cards.

Depending on the state your business is in, your business entity, what you are selling, and if you have employees, you may need one, both, or none of these numbers.  Check out our guide for starting a business for the requirements for each state.

Related: Do I need an EIN for a DBA?


  • Greg Bouhl

    With over two decades as an entrepreneur, educator, and business advisor, Greg Bouhl has worked with over 2,000 entrepreneurs to help them start and grow their businesses. Fed up with clients finding and acting on inaccurate and outdated information online, Greg launched StartUp101.com to be a trusted resource for people starting a business.

Do I Need a State Tax ID If I Have An EIN?

Do I Need a State Tax ID If I Have An EIN?

Leave a Reply

Your email address will not be published. Required fields are marked *

Some (but not all) of the links on StartUp101.com are affiliate links. This means that a special tracking code is used and that we may make a small commission on the sale of an item if you purchase through one of these links. The price of the item is the same for you whether it is an affiliate link or not, and using affiliate links helps us to maintain this website.

StartUp101.com is also a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com.

Our mission is to help businesses start and promoting inferior products and services doesn’t serve that mission. We keep the opinions fair and balanced and not let the commissions influence our opinions.