Dun & Bradstreet Business Credit Guide: Everything Sellers Need to Know
What Is Dun & Bradstreet?
Dun & Bradstreet (D&B) is the oldest and most influential business credit bureau in the world. Founded in 1841, D&B maintains credit files on over 400 million businesses globally. For e-commerce sellers building business credit, D&B is the starting point because most Net-30 vendors report payment history exclusively to D&B.
If you want vendors like Uline, Quill, and Grainger to build your credit profile, you need a DUNS number. Without it, your payments disappear into the void.
The DUNS Number: Your Business Credit DNA
The Data Universal Numbering System (DUNS) number is a unique 9-digit identifier that D&B assigns to each business in its database. Think of it as your business's Social Security Number for credit purposes.
How to Get a DUNS Number (Free)
- Go to dnb.com and search for your business
- If no record exists, click "Apply for a DUNS Number"
- Enter your business legal name, address, phone number, and EIN
- Submit the application
- Wait 1–5 business days for D&B to process and assign your number
⚠️ Warning: Never pay for a DUNS number. D&B issues them for free. Third-party websites charging $50–$200 for "expedited" DUNS services are scams.
What If D&B Already Has a Record for My Business?
If your business appears in D&B's database (often because a vendor or lender reported it), you can claim the existing DUNS number instead of applying for a new one. Claiming is free and takes 1–3 business days.
D&B PAYDEX Score: The Number That Matters Most
The PAYDEX score is D&B's primary credit scoring model. It ranges from 0 to 100 and measures one thing: how fast you pay your bills.
| PAYDEX Score | Payment Behavior | Risk Level |
|---|---|---|
| 100 | 30 days early | Lowest risk |
| 90 | 20 days early | Low risk |
| 80 | On time | Low risk |
| 70 | 15 days late | Moderate risk |
| 60 | 22 days late | Moderate risk |
| 50 | 30 days late | High risk |
| 40 | 60 days late | High risk |
| 20 | 90 days late | Highest risk |
| 1 | 120 days late | Highest risk |
For business credit building, your goal is PAYDEX 80 or higher. At 80, lenders and vendors view you as a reliable payer. At 90–100, you qualify for premium terms and higher credit limits.
Other D&B Scores You Should Know
Delinquency Predictor Score (1–5)
Predicts the likelihood that your business will pay severely late (90+ days) in the next 12 months. 1 = lowest risk, 5 = highest risk.
Financial Stress Score (1–5)
Predicts the likelihood that your business will experience financial distress (bankruptcy, closure, or severe delinquency) in the next 12 months. 1 = lowest risk.
Supplier Evaluation Risk Rating (1–9)
Specifically designed for vendors evaluating whether to extend trade credit. 1 = lowest risk of severe delinquency.
How D&B Collects Your Data
D&B builds your credit profile from multiple sources:
- Trade references: Vendors and suppliers that report payment history (Uline, Quill, Grainger, etc.)
- Public records: Bankruptcies, tax liens, judgments, and UCC filings
- Self-reported data: Financial statements you voluntarily submit through D&B CreditBuilder
- Third-party data: Industry benchmarks, corporate registration records, and web scraping
Building Your D&B Profile Fast
Step 1: Get Your DUNS Number
This is non-negotiable. Without it, nothing else matters.
Step 2: Open 4–5 Net-30 Vendor Accounts
Prioritize vendors that report to D&B:
| Vendor | Products | Min Order | Reports To |
|---|---|---|---|
| Uline | Shipping supplies | $50 | D&B, Experian |
| Quill | Office supplies | $45 | D&B |
| Grainger | Industrial supplies | $75 | D&B |
| Summa Office Supplies | Office furniture | $50 | D&B, Experian |
Step 3: Pay Every Bill Early
To hit PAYDEX 100, pay 30 days before the due date. To hit 80, pay on time. Never pay late.
Step 4: Add Trade References Manually
If you have vendors that don't automatically report, you can add them through D&B CreditBuilder. This costs $149/year but can accelerate your profile building by 2–3 months.
Step 5: Update Your Business Information
Log into your D&B dashboard quarterly and verify that your business name, address, phone, and industry classification (SIC/NAICS codes) are accurate.
D&B CreditBuilder: Worth It?
D&B CreditBuilder is a paid service ($149/year) that lets you:
- Add up to 12 trade references manually
- Monitor your PAYDEX score monthly
- Dispute errors on your D&B report
- Access your full D&B credit report
Verdict: Worth it for the first 6–12 months while you're actively building credit. After your profile is established, cancel and switch to a cheaper monitoring service like Nav.
Common D&B Mistakes
- Not getting a DUNS number: Without it, vendors can't report your payments
- Paying on the due date: On-time payments get you an 80. Early payments get you 90–100
- Inconsistent business name: "ABC LLC" and "ABC, LLC" are treated as different businesses
- Ignoring D&B emails: D&B may request verification documents. Ignoring them delays scoring
- Not monitoring: Errors on D&B reports are common and can go unnoticed for months
Get the Free Business Credit Tracker
Track every vendor account, credit card, and payment due date in one dashboard.
Download Free →Frequently Asked Questions
How long does it take to get a PAYDEX score?
Typically 60–90 days after your first vendor payment is reported. D&B needs at least two trade references and three payment experiences to generate a PAYDEX score.
Can I have multiple DUNS numbers?
No. Each business entity should have exactly one DUNS number. Having multiple numbers splits your credit history and hurts your scores.
Does D&B report to personal credit?
No. D&B is strictly business credit. However, if you personally guarantee a business loan and default, the lender may report the default to personal bureaus separately.
This is informational, not financial advice. Vendor terms, card offers, and bureau reporting policies change, and a general guide can't account for your specific credit history or business situation. Confirm current terms directly with the issuer or vendor before applying. See our editorial policy for how we verify what we publish.