Step 04 Business identity

EIN and D-U-N-S: your business's two numbers.

To build business credit, your business needs two numbers that have nothing to do with your Social Security number: the EIN, which identifies it to the IRS, and the D-U-N-S number (also written DUNS), which identifies it to Dun & Bradstreet. One is for taxes; the other is the foundation of its business credit profile.

Updated · 3 min read

What an EIN is

The EIN (Employer Identification Number) is a nine-digit number in the format 12-3456789, issued by the IRS. It identifies your business for taxes, and banks and vendors ask for it to open accounts in the business's name.

How to get it

  • At irs.gov, with the online application. It's free.
  • If you complete it online and it's approved, you get the number when you finish.
  • To apply online, the person responsible for the business needs their Social Security number (SSN) or their ITIN. If they have neither, it can't be done online; the IRS explains on irs.gov how to apply by fax or by mail with Form SS-4.
Watch out

The IRS doesn't charge for the EIN. Some sites charge to do the paperwork for you; it isn't necessary.

What a D-U-N-S number is

The D-U-N-S (Data Universal Numbering System) is a nine-digit number assigned by Dun & Bradstreet, a private company that collects business information. It's used to create your business's file in its database, which is where PAYDEX, one of the best-known business credit scores, is calculated.

How to get it

  • On the Dun & Bradstreet website, with the business's legal name, address and details.
  • Getting it is free. Through the free route, Dun & Bradstreet says the process can take up to 30 business days. It also sells a paid option that delivers it in about eight business days, and services to monitor the profile; none of them is required to get the number.
  • Some vendors and platforms ask for it to open business accounts.

EIN and D-U-N-S, side by side

EIN and D-U-N-S number
EIND-U-N-S
Who issues itThe IRS (federal government)Dun & Bradstreet (private company)
What it's forIdentifying the business for taxes and paperworkIdentifying the business in Dun & Bradstreet's business database
What it costsFreeFree (can take up to 30 business days); there's a faster paid option
Format9 digits (12-3456789)9 digits
Is it required?Depends on the type of business; almost always needed for the business bank accountNot required by law; it helps build the business profile

Do I need both?

To build business credit, it's common to have both: the EIN, so the business exists for the IRS and at the bank, and the D-U-N-S, so it has a file where its payments to vendors are recorded. See how they fit with everything else in how to build business credit.

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