A Data Universal Numbering System (DUNS) number is a unique nine-digit identifier assigned by Dun & Bradstreet to track a company's commercial credit activity. If you want to establish business credit files with Dun & Bradstreet or qualify for trade credit accounts that report to them, you need a DUNS number. However, you no longer need a DUNS number to apply for federal contracts or government grants, as the federal government replaced it with the Unique Entity ID (SAM). Setting up a distinct legal entity like an LLC through ZenBusiness and obtaining a free EIN from the IRS are the foundational first steps before requesting a DUNS number.
What Is a DUNS Number?
A DUNS number (Data Universal Numbering System) is a unique nine-digit code created by Dun & Bradstreet (D&B) in 1962. It functions as a digital fingerprint for your business, linking your company's physical location, legal identity, ownership structures, and operational history to a centralized commercial database.
Unlike a Social Security Number (SSN) or an Employer Identification Number (EIN), which are issued by government authorities, a DUNS number is a proprietary commercial identifier. Commercial credit bureaus, suppliers, financial institutions, and potential trade partners use this number to evaluate a company's financial stability, payment history, and creditworthiness.
When a vendor or supplier grants you trade credit terms, such as Net-30 or Net-60 payment schedules, they check your commercial credit profile. The DUNS number allows Dun & Bradstreet to attach those payment behaviors to your file, generating commercial scores like the Paydex score.
Do You Need a DUNS Number?
Whether your business needs a DUNS number depends entirely on how you plan to fund operations, buy inventory, and establish commercial relationships.
You need a DUNS number if:
- You plan to apply for trade credit accounts or Net-30 vendor terms with suppliers that report payment histories to Dun & Bradstreet.
- You want to build a formal commercial credit history separate from your personal credit score.
- Foreign enterprise clients, large corporations, or domestic supply chains require a verified D&B profile before onboarding you as a vendor.
- You are applying for specific commercial loans or lines of credit where underwriters review Dun & Bradstreet credit files.
You do not need a DUNS number if:
- You are strictly applying for federal government contracts, grants, or federal financial assistance.
- You operate as a sole proprietor with no intentions of establishing trade credit, taking on commercial financing, or working with enterprise-level suppliers.
- Your vendors only report payment histories to alternative business credit bureaus like Experian or Equifax.
The Federal Identifier Switch: DUNS vs. Unique Entity ID (SAM)
A widespread misconception among small business owners is that a DUNS number is mandatory for government contracting. While that was true for decades, the federal landscape changed completely in 2022.
On April 4, 2022, the U.S. General Services Administration (GSA) officially decommissioned the DUNS number as the primary identifier for federal awards. All federal procurement and financial assistance systems, including SAM.gov, switched to the Unique Entity ID (SAM).
The Unique Entity ID is a 12-character alphanumeric code assigned directly by SAM.gov. It is completely free, managed entirely by the federal government, and does not require any interaction with Dun & Bradstreet. If your sole reason for seeking a DUNS number was to bid on government contracts or apply for federal grants, you can skip Dun & Bradstreet entirely and register directly at SAM.gov.
However, for private sector commerce, trade credit accounts, and commercial lending, the DUNS number remains a central standard.
How to Get a DUNS Number Free
Dun & Bradstreet provides a free DUNS number to any legitimate business entity. You do not need to pay a third party or buy paid credit-monitoring packages to get one assigned to your enterprise.
To request a free DUNS number:
- Visit the official Dun & Bradstreet website.
- Search their business directory to ensure a profile has not already been created automatically for your business.
- If no file exists, submit a request for a new DUNS number.
- Provide your legal business name, physical address, phone number, executive leadership details, and legal entity structure.
- Upload documentation confirming your business identity, such as articles of organization, a business license, or a bank statement.
Dun & Bradstreet sets its own processing time for a free DUNS number. While Dun & Bradstreet offers paid expedited services to deliver the number faster, the core assignment of the identifier itself costs nothing.
The SBA Framework: Building Business Credit in Order
Obtaining a DUNS number is only one piece of a broader process. Attempting to apply for a DUNS number or trade credit before setting up your business foundation correctly can lead to rejected applications and fractured credit records.
The U.S. Small Business Administration (SBA) outlines five specific steps to build business credit safely and systematically:
- Choose the Right Business Structure: To build business credit, your company must exist as a distinct legal entity. Setting up a limited liability company (LLC), limited liability partnership (LLP), or corporation isolates business liabilities and establishes a recognized legal entity.
- Obtain a Federal Tax ID Number (EIN): An Employer Identification Number is issued for free directly by the IRS. It serves as your company's federal tax identifier, allowing you to conduct business without using your personal Social Security Number.
- Open a Business Bank Account: Complete separation of funds is required. A dedicated business checking account creates a clean paper trail for revenue, expenses, and capital reserves, proving to underwriters that the entity is financially solvent.
- Establish Credit with Vendors and Suppliers Who Report: Begin applying for Net-30 or trade credit terms with vendors that routinely report payment activity to commercial credit bureaus like Dun & Bradstreet, Experian, or Equifax.
- Monitor Your Business Credit Reports: Regularly check your credit files across the major commercial bureaus to ensure payment histories are recorded accurately and to catch potential errors early.
By following this exact sequence, you ensure that when you request a DUNS number, Dun & Bradstreet attaches it to a verified, legally sound entity with its own bank account.
The Bridge: Establishing Your Legal Foundation
Before requesting a DUNS number or filling out trade credit applications, you must complete the mandatory legal and financial separation steps outlined by the SBA and the IRS.
To make your business a distinct legal entity, you must select a structure such as an LLC or corporation and register it with your state filing office. Once registered, you must obtain an EIN. The IRS offers an online assistance tool where you can apply for an EIN for free.
If you are starting a new company or transitioning from a sole proprietorship, services like ZenBusiness streamline the formation process by filing your legal formation documents, securing your EIN, and helping you set up the structure required to keep your personal and business finances separated from day one. You can also handle filing paperwork directly with your state's Secretary of State and apply for your EIN directly at IRS.gov.
Once your entity is filed, your EIN is active, and your business bank account is funded, your company meets all prerequisites to request a DUNS number and begin applying for Net-30 vendor credit.
Vendor Credit and Net-30 Accounts Explained
Trade credit is an arrangement where a supplier allows you to purchase goods or services on credit and pay the balance later. The most common form of trade credit for growing businesses is a Net-30 account.
Under Net-30 terms, the full invoice amount is due within 30 calendar days of the invoice date. Some vendors offer early payment discounts, such as "2/10 Net 30," which grants a 2% discount if the invoice is paid within 10 days; otherwise, the full balance is due in 30 days.
Net-30 accounts serve as the primary stepping stone for commercial credit building because many starter vendors do not require extensive credit histories or personal guarantees. When you make purchases on Net-30 terms and pay your invoices early or on time, the vendor reports those positive payment experiences to commercial credit bureaus.
These positive trade references populate your Dun & Bradstreet profile, raising your Paydex score. How the Paydex scale reads, and how much credit early payment earns, is set by Dun & Bradstreet.
Commercial Credit Bureaus and Monitoring Options
Unlike personal credit, where the Fair Credit Reporting Act (FCRA) gives consumers specific privacy rights, business credit profiles are public commercial records. Anyone can look up a company's business credit file if they pay for the report.
Four main providers dominate the business credit monitoring and reporting landscape. Below, these options are listed in alphabetical order:
Dun & Bradstreet
Dun & Bradstreet is the oldest commercial credit bureau in the United States and manages the DUNS system. It tracks business performance, payment records, and financial risk profiles, generating proprietary metrics like the Paydex score and the D&B Viability Rating.
Pricing for Dun & Bradstreet credit management products, as of October 6, 2026:
- D&B Credit Insights Free: $0 per month (provides basic access to view your company's D&B profile and tracking alerts).
- D&B Credit Insights Basic: $49 per month or $499 per year.
- D&B Credit Insights Plus: $149 per month or $1,499 per year.
- D&B Credit Insights Premium: $199 per month or $1,999 per year.
You can visit Dun & Bradstreet directly to search for your company's profile or request a free DUNS number.
Equifax
Equifax operates a major commercial credit division that aggregates trade data, financial payment history, lease information, and public records into business credit reports.
A key distinction regarding Equifax is that it does not sell business credit reports directly to business owners on its website. Instead, Equifax business credit reports are distributed through approved resellers and partner platforms.
Pricing for Equifax commercial reports through approved channels, as of October 6, 2026:
- One-time Equifax business report: $49.99 (sold through official reseller eCredable).
- Ongoing Equifax business monitoring: From $39.99 per month (sold through monitoring platform Nav).
You can review commercial options directly at Equifax.
Experian
Experian Small Business maintains detailed commercial credit database files on U.S. companies. Experian assigns businesses an Intelliscore Plus score, which uses predictive analytics to calculate the risk of severe delinquency.
Pricing for Experian small business reports, as of October 6, 2026:
- CreditScore Report: $59.95 one-off report.
- ProfilePlus Report: $69.95 one-off report (includes expanded trade details and judgment data).
- Business Credit Advantage: $199 per year (provides self-monitoring and alert notifications).
- Business CreditScore Pro: $1,995 per year (designed for businesses managing high-volume credit decisions on other companies).
You can purchase reports directly at Experian.
Nav
Nav is a business financial management platform that acts as an aggregator for commercial credit monitoring. Rather than functioning as an independent credit bureau, Nav pulls credit summary data and reports directly from Dun & Bradstreet, Experian, and Equifax into a single dashboard.
Pricing for Nav plans, as of October 6, 2026:
- Free Tier: $0 per month (includes basic business credit summaries from all three major bureaus).
- Track Plan: $39.99 per month.
- Build Plan: $49.99 per month.
- Expand Plan: $74.99 per month.
You can review dashboard options directly at Nav.
Summary of Commercial Credit Providers
| Provider | Core Business Function | Monitoring Cost (As of Oct 6, 2026) | Direct Sales or Reseller |
|---|---|---|---|
| Dun & Bradstreet | Issues DUNS numbers and calculates Paydex scores | Free tier available; paid tiers from $49/mo to $199/mo | Direct sales |
| Equifax | Commercial credit risk data and financial trade files | $49.99 one-time report; monitoring from $39.99/mo | Sold exclusively via approved resellers |
| Experian | Calculates Intelliscore Plus and tracks commercial risk | One-time reports $59.95-$69.95; annual plans $199-$1,995 | Direct sales |
| Nav | Multi-bureau credit aggregation and financial dashboard | Free tier available; paid tiers from $39.99/mo to $74.99/mo | Aggregator / Reseller platform |
Red Flags and Credit Scams to Avoid
As you establish your business credit profile, build trade lines, and request your DUNS number, you will likely receive solicitation offers from third-party lenders and credit consultants. The business credit industry contains predatory operators and upfront fee schemes designed to take advantage of new entrepreneurs.
The Federal Trade Commission (FTC) warns small business owners to watch for specific warning signs:
Advance Fees Are the Primary Tell Any lender or consultant who demands an upfront fee before approving or granting a business credit line, loan, or trade account should be treated as a scam. Scammers often claim these upfront fees are required for "processing," "document review," "underwriting insurance," or "paperwork." Legitimate lenders charge application fees or deduct closing costs from the loan proceeds, but they do not demand advance payments under the guise of guaranteed approvals.
No Legitimate Lender Guarantees Credit Before You Apply According to the FTC, legitimate banks and financial institutions never promise or guarantee credit approvals before evaluating your financial statements, bank records, or credit profiles. Marketing materials containing phrases like "Bad credit? No problem," "Guaranteed business funding," "No hassle, guaranteed approval," or "We don't care about your past" are standard indicators of fraudulent activity.
Paid EIN or DUNS Assistance An EIN is completely free from the IRS, and a DUNS number is completely free from Dun & Bradstreet. Any company asking you to pay a fee simply to submit an EIN form or request a DUNS number on your behalf is adding a markup to a process you can complete yourself.
Protect your business by obtaining official identifiers directly from government agencies or official bureau websites, maintaining separate financial accounts, and building credit through verified vendor accounts that report performance transparently.
Sources
- U.S. Small Business Administration, "How to Build Business Credit Quickly: 5 Simple Steps"
- 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"