Quick Answer: A D-U-N-S number is a unique nine-digit identifier assigned by Dun & Bradstreet to track a company's commercial credit profile. You need one if you want to build business credit with vendors and lenders that report to Dun & Bradstreet, or if an enterprise partner requires it. However, you do not need a D-U-N-S number to bid on federal contracts or receive government grants. On April 4, 2022, the federal government officially retired the D-U-N-S number across all General Services Administration systems and replaced it with the Unique Entity ID, which is issued directly through SAM.gov. To build business credit properly, your first step is establishing a legal entity and obtaining an EIN through services like ZenBusiness, then establishing bank accounts and trade lines.
What Is a D-U-N-S Number, and Do You Actually Need One?
A Data Universal Numbering System, or D-U-N-S number, is a nine-digit numerical code created by Dun & Bradstreet in 1962. Dun & Bradstreet uses this identifier to track a specific business location within its proprietary global database. Just as individuals have credit files attached to their Social Security numbers, businesses accumulate commercial credit histories attached to their D-U-N-S numbers.
Whether you need a D-U-N-S number depends entirely on your business goals. If you plan to apply for trade credit from net-30 vendors, secure commercial bank financing, or contract with large private corporations that mandate a Dun & Bradstreet evaluation, you will benefit from having one. Dun & Bradstreet creates a D-U-N-S file automatically when a reporting vendor submits your payment activity, but requesting your number directly ensures your business address, legal name, and structural details are listed correctly from the start.
You do not need a D-U-N-S number if your sole target is federal contracting or government grant funding. Many small business guides published online still assert that the federal government mandates a D-U-N-S number for federal awards. That information is obsolete. The federal government completely phased out the D-U-N-S requirement in April 2022. Today, commercial credit evaluation and government award eligibility operate on two entirely distinct identification tracks.
The Federal Transition: D-U-N-S vs. Unique Entity ID (SAM)
For over two decades, the U.S. federal government relied on Dun & Bradstreet's proprietary D-U-N-S system as the primary vendor identification mechanism across its procurement platforms. Businesses seeking government contracts or financial assistance were forced to acquire a D-U-N-S number before registering in federal databases.
This arrangement ended on April 4, 2022. The U.S. General Services Administration transitioned all federal procurement systems, including SAM.gov, to a new identifier: the Unique Entity ID (SAM).
Why the General Services Administration Made the Switch
The transition away from the D-U-N-S number served several policy and operational objectives:
- Government Ownership: The Unique Entity ID is owned and managed directly by the U.S. federal government, eliminating reliance on a private commercial entity for official registration.
- Streamlined Registration: Entities no longer need to visit a third-party website to get an identifier before registering to do business with the government.
- Cost Savings: Eliminating commercial licensing fees for identifier management reduced administrative overhead across federal agencies.
Key Differences Between Identifiers
| Feature | D-U-N-S Number | Unique Entity ID (SAM) |
|---|---|---|
| Managing Entity | Dun & Bradstreet (Private Bureau) | U.S. General Services Administration |
| Format | 9-digit numeric code | 12-character alphanumeric code |
| Primary Purpose | Commercial business credit profiling | Federal contracting, awards, and grants |
| Registration Platform | dnb.com | SAM.gov |
| Government Obligation | Retired for federal awards in April 2022 | Mandatory for federal government business |
If your goal is to sell goods or services to federal agencies, apply for federal grants, or work as a prime subcontractor on government projects, you must request a Unique Entity ID at SAM.gov. If your goal is to obtain net-30 terms from commercial trade vendors, buy inventory on credit, or build a business credit score, the D-U-N-S number remains relevant within the private sector.
How Vendors and Lenders Find and Evaluate Your Business
When you submit an application for trade credit or a net-30 account, the vendor's underwriting team must verify that your enterprise is a legitimate operating entity. Unlike consumer lending, where a credit check centers on personal credit files, commercial credit checks rely on public records, business bank verification, and bureau credit files.
Commercial creditors gather data from several distinct layers to determine whether to extend credit terms.
1. Public Records and Entity Verification
Vendors verify that your business is registered with your state's Secretary of State or equivalent corporate filing office. If your company operates as an unregistered sole proprietorship, suppliers view the arrangement as higher risk. Vendors confirm your business legal structure, current standing, and registered address before pulling commercial bureau data.
2. Tax Identification Verification
Suppliers check your Federal Employer Identification Number against IRS filings to ensure your corporate name matches your tax records. An EIN establishes your firm as a tax-reporting entity separate from its owners.
3. Commercial Credit Bureau Queries
When you request trade credit, vendors query one or more commercial credit reporting agencies. The primary bureaus in the commercial landscape are:
- Dun & Bradstreet: Generates the PAYDEX score based on supplier payment records.
- Experian Commercial: Produces the CreditScore Report and Intelliscore Plus ratings based on trade payment history, legal filings, and collections data.
- Equifax Small Business: Provides business risk scores and credit reports combining trade line history and financial institution data.
Suppliers pull these reports to see if other vendors have extended credit to you and whether you paid those invoices on time or past terms.
4. Trade Credit Exchange Networks
Many net-30 vendors participate in trade credit exchange groups. These networks allow suppliers to pool trade payment experiences directly. If a business defaults on an invoice with one supplier, other participating vendors observe that payment drop-off long before it surfaces on formal credit agency reports.
The Official Sequence for Building Business Credit
Building business credit requires a deliberate sequence. Attempting to apply for trade credit accounts before setting up your legal and banking foundation often leads to automatic rejections. The U.S. Small Business Administration outlines five steps to establish business credit correctly. Following this sequence ensures that when vendors query your business, your records match across all commercial and governmental databases.
Step 1: Choose the Right Business Structure
To build credit in your company's name, your business must exist as an independent legal person. Operating as an informal sole proprietorship leaves your business credit intertwined with your personal credit profile. Setting up a formal entity, such as a limited liability company (LLC), limited liability partnership (LLP), or corporation, creates the legal separation required to hold assets and contract debts under the business name.
Entrepreneurs launching a new venture can handle corporate filings directly or use incorporation services like ZenBusiness to register an LLC and manage ongoing state compliance requirements.
Step 2: Obtain a Federal Tax ID Number (EIN)
Once your legal entity is approved by the state, you must request an Employer Identification Number from the Internal Revenue Service. The EIN serves as the primary tax identifier for your enterprise, functioning much like a Social Security number for corporate entities.
An EIN is free directly from the IRS. You can apply using the online application tool on the official IRS website and receive your number immediately upon completion. Never pay a third-party administrative fee for an EIN, as the federal government provides this identifier without charge.
Step 3: Open a Business Bank Account
Separation is the foundation of business credit. Mixing personal and corporate funds compromises your legal liability protections and prevents vendors from verifying your firm's financial capacity.
Take your state entity documents, your EIN confirmation letter, and your resolution documents to a financial institution to open a dedicated business checking account. Commercial lenders set their own requirements for how much business checking history they want to see before approving major bank lines or equipment financing.
Step 4: Establish Credit with Vendors and Suppliers Who Report
Once your entity, EIN, and banking accounts are active, begin applying for initial trade credit. Search for starter net-30 vendors that offer open account terms to new enterprises without requiring extensive credit histories.
The critical requirement at this stage is confirming that the vendor actively reports trade payment data to commercial credit bureaus like Dun & Bradstreet, Experian Commercial, or Equifax Small Business. Paying invoices early or on time with reporting vendors builds your initial trade references.
Step 5: Monitor Your Business Credit Reports
Unlike consumer credit, which is protected by the Fair Credit Reporting Act, business credit files are public records. Anyone, including competitors, prospective clients, and suppliers, can purchase a commercial credit report on your enterprise. Regularly review your reports across major bureaus to catch reporting errors, unmatched trade lines, or fraudulent activity early.
Commercial Credit Profiles and Monitoring Options
Monitoring your business credit profile helps you track which vendors are reporting your payments and verify that your credit scoring reflects your true payment performance. Because commercial bureaus operate independently, pricing structures and monitoring products vary widely across the market.
Below are the primary credit profile and monitoring services available to small businesses, listed in alphabetical order.
Dun & Bradstreet
Dun & Bradstreet maintains credit files linked to its proprietary D-U-N-S system. The bureau tracks payment history through its PAYDEX score, an index that measures how promptly a firm pays its suppliers relative to invoice terms.
As of October 6, 2026, Dun & Bradstreet offers several tiers of credit visibility:
- D&B Credit Insights Free: $0 per month. Provides basic file alerts and limited visibility into your D&B profile.
- D&B Credit Insights Basic: $49 per month or $499 per year. Offers foundational credit monitoring and alerts.
- D&B Credit Insights Plus: $149 per month or $1,499 per year. Provides expanded score tracking and competitive benchmark data.
- D&B Credit Insights Premium: $199 per month or $1,999 per year. Includes comprehensive score tracking, detailed trade line analysis, and priority support.
Equifax Small Business
Equifax provides commercial credit information combining trade payment data with financial institution records. Equifax reports include the Business Credit Risk Score and the Business Failure Score, which evaluate the likelihood of severe delinquency or bankruptcy.
Equifax does not sell commercial credit reports directly to business owners through its own retail portal. Instead, reports are distributed through approved commercial resellers:
- eCredable: Distributes one-off Equifax business credit reports for $49.99 per report (as of October 6, 2026).
- Nav: Delivers recurring Equifax business credit monitoring as part of its multi-bureau subscription packages.
Experian Commercial
Experian Commercial tracks corporate credit management through metrics like the Intelliscore Plus score and the Financial Stability Risk Rating. Experian pulls data from vendors, lenders, public court records, and UCC filings.
As of October 6, 2026, Experian offers individual reports and subscription monitoring:
- CreditScore Report: $59.95 one-off fee. Delivers a snapshot of business credit scores, payment trends, and public records.
- ProfilePlus Report: $69.95 one-off fee. Adds detailed trade payment breakdowns and credit limit recommendations to the standard report.
- Business Credit Advantage: $199 per year. Provides ongoing monitoring, email alerts for credit changes, and unlimited report access.
- Business CreditScore Pro: $1,995 per year. Designed for companies that need to run frequent credit checks on other businesses and partners.
Nav
Nav operates as a financial management platform that aggregates commercial credit data from multiple bureaus into a single dashboard. Rather than acting as an independent credit bureau, Nav pulls data from Dun & Bradstreet, Experian, and Equifax to give business owners unified visibility.
As of October 6, 2026, Nav's plans include:
- Free: $0 per month. Displays high-level business credit summaries from all three primary bureaus.
- Track: $39.99 per month. Includes detailed business credit reports and monitoring alerts across bureaus.
- Build: $49.99 per month. Combines multi-bureau credit monitoring with reporting of Nav subscription payments as a trade line to build credit history.
- Expand: $74.99 per month. Offers advanced monitoring, elevated match tools for financing, and trade credit reporting options.
Spotting Advance-Fee Scams and Unethical Lenders
As you establish your enterprise and seek financing or trade credit, you will encounter marketing offers claiming to guarantee immediate capital or business credit lines. New business owners are frequent targets for advance-fee credit scams.
Understanding the legal and regulatory rules governing commercial lending protects your enterprise from fraudulent schemes.
The Up-Front Fee Rule
Legitimate lenders and trade credit suppliers do not ask for up-front money before approving a loan or credit line. The Federal Trade Commission warns small businesses that any requirement to pay money in advance for processing, application evaluation, or loan insurance is a major red flag.
If a broker or lender demands payment before delivering funds or approving account terms, walk away immediately. Legitimate application fees, if any, are deducted from loan proceeds upon closing or billed through standard corporate accounting channels.
Pre-Approval and Guarantee Claims
According to FTC guidance, legitimate lenders do not promise or guarantee credit approvals before reviewing an applicant's financial background, commercial credit profile, and revenue documentation.
Be highly skeptical of promotional offers using phrases such as:
- "Bad credit? No problem!"
- "Guaranteed approval with no credit check!"
- "We don't care about your past - get $50,000 today!"
These claims usually signal advance-fee fraud, deceptive fee structures, or predatory merchant cash advance products that carry exorbitant effective annual percentage rates.
Protecting Your Enterprise
To keep your company safe while building trade credit:
- Deal directly with known suppliers: Establish net-30 accounts with recognized industrial, office, or trade vendors.
- Verify licensing and regulatory status: Check state banking regulators before working with unfamiliar business loan brokers.
- Never pay money to receive credit: Do not wire funds, purchase gift cards, or send advance fees to secure loan approvals or trade lines.
Sources
- U.S. Small Business Administration, "How to Build Business Credit Quickly: 5 Simple Steps"
- U.S. Small Business Administration, "7(a) Loans"
- U.S. General Services Administration, "GSA Systems Switch to Unique Entity ID (SAM) on April 4, 2022"
- Federal Trade Commission, "What To Know About Advance-Fee Loans"
- Federal Trade Commission, "Fraudulent Funders = Big Woes for Small Businesses"
- Internal Revenue Service, "Get an Employer Identification Number"