Published: June 25, 2026
I'm Slava, founder of Jupid. Before this, I built Anna Money, where we worked with more than 60,000 small businesses and grew to $40M ARR. One question I saw come up again and again from new owners: "Do I need a DUNS number?" Usually they'd read it on a checklist somewhere, panicked, and assumed it was a legal requirement like an EIN.
It isn't. And the answer to "do I need one" has gotten simpler over the past few years, not more complicated. In April 2022 the federal government stopped using the DUNS number entirely and replaced it with its own identifier, the Unique Entity ID. So a lot of the old advice telling you to rush out and get a DUNS number for government contracts is now flat wrong.
That doesn't mean the DUNS number is dead. It still runs your business credit file at Dun & Bradstreet, and a handful of large vendors and grant programs still ask for it. But for most small businesses and freelancers, it's optional, free, and not urgent.
I wrote this guide to cut through the confusion. By the end you'll know exactly what a DUNS number is, where it still matters in 2026, how it differs from your EIN and the newer UEI, and how to get one for free if you actually need it.
Here's what we'll cover:
A DUNS number is a unique nine-digit identifier assigned to a business by Dun & Bradstreet, a commercial credit bureau that has been rating companies since the 1800s. DUNS stands for Data Universal Numbering System. Dun & Bradstreet writes it as D-U-N-S, with hyphens, but everyone says "DUNS."
Think of it as a Social Security number for your business credit file, except it's run by a private company rather than the government. When a vendor, lender, or supplier wants to check whether your business pays its bills on time, they look you up by your DUNS number and pull your Dun & Bradstreet file. That file is what feeds your business credit scores.
A few facts that surprise people:
The DUNS number itself is just a key. The value lives in the credit file attached to it.
The main reason a DUNS number exists today is business credit. Your DUNS number is the anchor for your Dun & Bradstreet credit file, and the headline number in that file is your PAYDEX score.
PAYDEX is a business credit score that runs from 0 to 100 and measures one thing: how reliably your company pays its bills. It works like a personal credit score, but instead of tracking loans and credit cards, it tracks your payment history with vendors and suppliers who report to Dun & Bradstreet.
Here's how the range breaks down:
| PAYDEX score | What it signals |
|---|---|
| 80–100 | Low risk — pays on time or early |
| 50–79 | Moderate risk — pays slightly late |
| 0–49 | High risk — pays significantly late |
A score of 80 is the benchmark most vendors look for, and it means you consistently pay on the due date. One detail that trips owners up: PAYDEX is dollar-weighted. A large account you pay on time moves your score more than a small one, so the size of the bill matters, not just the fact that you paid it.
Why does this matter to a small business? A solid business credit file, separate from your personal credit, can help you:
Building business credit is a long game, and it starts with keeping your finances separate from your personal ones. A dedicated bank account is step one — our guide on how to open a business bank account walks through that. Vendors that report your payments to Dun & Bradstreet are what move the PAYDEX needle.
For more than two decades, the DUNS number doubled as the federal government's official business identifier. If you wanted to bid on a federal contract, receive a federal grant, or register in SAM.gov (the System for Award Management), you first had to get a DUNS number from Dun & Bradstreet.
That ended on April 4, 2022.
On that date, the federal government stopped using the DUNS number and replaced it with the Unique Entity ID, usually shortened to UEI. The reason was straightforward: the government didn't want to depend on a private third party to issue the number that gates billions of dollars in federal awards. So it built its own.
Here's what changed:
If your business was already registered in SAM.gov before April 2022, the transition was automatic — you were assigned a UEI and didn't have to do anything. If you're registering now, you never touch a DUNS number at all. You go to SAM.gov, register your entity, and receive a UEI.
The practical takeaway: if the only reason someone told you to get a DUNS number was to work with the federal government, that advice is outdated. For federal contracts and grants in 2026, you need a UEI from SAM.gov, not a DUNS number from Dun & Bradstreet.
The federal switch retired the DUNS number's biggest job, but it didn't make it useless. There are still real situations where you'll want one:
Building a Dun & Bradstreet business credit file. This is the main reason to get a DUNS number today. If you want a PAYDEX score and a formal business credit history with D&B, the DUNS number is the file it's attached to. No DUNS number, no D&B credit file.
Certain large-company vendor programs. Some big corporations vet suppliers through Dun & Bradstreet and will ask for your DUNS number before they set you up as a vendor. Apple's developer program, for example, requires a D-U-N-S Number to enroll an organization.
Some grants and non-federal funding. While federal awards now use the UEI, certain state, local, and private grant programs still reference DUNS numbers in their applications. Always read the specific application.
International trade and partnerships. Dun & Bradstreet operates globally, and some overseas partners or trade registries use the DUNS number as a standard business identifier.
Outside of these, most freelancers, single-member LLCs, and small service businesses don't need a DUNS number to operate, file taxes, or get paid. It's optional. Dun & Bradstreet says so plainly: there's no requirement to have one. If you're building toward financing or supplier credit, get one. If you're a solo consultant invoicing a handful of clients, it can wait.
These three identifiers get mixed up constantly because they're all numbers attached to your business. They do completely different jobs. Here's the clean comparison:
| Feature | DUNS Number | EIN | UEI |
|---|---|---|---|
| Issued by | Dun & Bradstreet (private) | IRS (federal) | SAM.gov / GSA (federal) |
| Format | 9 digits | 9 digits (XX-XXXXXXX) | 12 characters, alphanumeric |
| Purpose | Business credit file | Federal taxes, payroll | Federal contracts & grants |
| Cost | Free | Free | Free |
| Required? | Optional | Required for most businesses | Only for federal awards |
| Where to get it | dnb.com | irs.gov | sam.gov |
The EIN is the one most businesses genuinely need. The IRS uses it to identify your business for taxes, and you need it to hire employees, open a business bank account, or file as a partnership, corporation, or multi-member LLC. If you're unsure where to find yours, see our guide on how to find your EIN number. An EIN is not optional for most businesses the way a DUNS number is.
The UEI only matters if you're working with the federal government. No federal contracts or grants in your future? You can ignore it entirely.
The DUNS number is the optional one focused purely on business credit. It does nothing for your taxes and nothing for your federal eligibility — both of those are handled by the EIN and UEI respectively.
A quick way to keep them straight: the IRS knows you by your EIN, the federal procurement system knows you by your UEI, and Dun & Bradstreet knows you by your DUNS number.
First, check whether you already have one. Dun & Bradstreet has been assigning DUNS numbers automatically to businesses for years, often before a company ever asks. You may have one without knowing it.
To look up an existing DUNS number:
To request a new one (free):
If no record exists, you can apply for free on the Dun & Bradstreet website. You'll provide:
Here's the timeline and cost to set expectations:
DUNS NUMBER — STANDARD (FREE)
Application: Online at dnb.com
Cost: $0
Processing time: Up to 30 business days
DUNS NUMBER — EXPEDITED (OPTIONAL)
Cost: $229
Processing time: About 8 business days
For almost everyone, the free standard option is the right choice. The expedited $229 fee only makes sense if a vendor or program has a hard deadline that the 30-day window would blow past. Do not pay a third-party "DUNS registration service" — there are companies that charge to do something Dun & Bradstreet does for free.
After you have your number, the work of building credit begins: open trade accounts with vendors who report to Dun & Bradstreet, pay every bill on or before the due date, and keep your business finances cleanly separated from your personal accounts. Staying organized and compliant from day one makes this far easier — our guide on how to stay tax compliant as an LLC covers the habits that keep your business records audit-ready and your credit file accurate.
Thinking a DUNS number is legally required. It isn't. Unlike an EIN, there's no law that says your business must have one. It's an optional credit-bureau identifier. Don't let a generic startup checklist scare you into treating it as mandatory.
Getting a DUNS number for federal contracts in 2026. Since April 2022, federal awards use the UEI from SAM.gov, not the DUNS number. If government work is your only goal, register in SAM.gov for a free UEI and skip Dun & Bradstreet entirely.
Paying a third party to "register" it. Dun & Bradstreet issues DUNS numbers for free. Any service charging a fee just to obtain one for you is selling you something you can do yourself in a few minutes.
Confusing the DUNS number with the EIN. They're both nine digits, which fuels the mix-up, but they're unrelated. Your EIN handles taxes and is issued by the IRS; your DUNS number handles credit and is issued by Dun & Bradstreet. Getting one does nothing for the other.
Assuming a new DUNS number means instant credit. The number is just an empty file until vendors start reporting your payments. A DUNS number with no trade history has no PAYDEX score. Building business credit takes months of consistent, reported, on-time payments.
Whether or not you ever pull a DUNS number, the thing that actually builds business credit and keeps you fundable is clean, separated, organized business finances. That's where most small businesses fall behind, and it's exactly what Jupid handles.
Jupid is an AI accountant that lives in WhatsApp and iMessage. Connect your business bank account, and Jupid pulls in every transaction and auto-categorizes it with 95.9% accuracy, so your books stay current without manual data entry. Clean books are what let you see your real cash position, prove your business is distinct from your personal finances, and answer a lender's or vendor's questions without scrambling.
When something is unclear, you settle it in a quick chat message instead of opening a spreadsheet. Over time Jupid learns how your business categorizes spending, so the right account gets applied automatically going forward — you can read more about that in transaction learning.
Because your numbers stay accurate in the background, you can ask things like "how much did I spend on contractors this quarter?" right in chat and get an answer in seconds. Jupid also handles automatic tax filing, so the compliance side that keeps your business in good standing runs itself.
A DUNS number gives you a credit file. Clean books are what fill it with a story worth lending against. Try Jupid and let the bookkeeping run in the background while you build.
This guide is for general educational purposes and does not constitute tax, legal, or accounting advice. Identifier requirements vary by business type, vendor, and funding program. Confirm whether you need a DUNS number, EIN, or UEI for your specific situation, and consult a qualified professional before relying on any of these for a contract, grant, or financing application.
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