To use your DUNS number to build business credit, treat the number as the hook that a credit file hangs on: register it, then open trade accounts with vendors that report payments to Dun & Bradstreet, pay every invoice on or before the due date, and let the resulting payment history generate a PAYDEX score lenders can evaluate on its own. From application to a scoreable profile usually takes six to twelve months of consistent activity.
Set the Business Up Before the Number Does Any Work
A DUNS number sitting on top of an unstructured business does nothing. It needs a real company underneath it, because every lender or supplier who pulls your D&B file expects to see one.
Before you apply, get four things in place:
- An Employer Identification Number from the IRS, so you can open accounts under the company rather than your Social Security number.
- A formal entity on file with your state — LLC, corporation, or partnership — with articles of incorporation, a DBA certificate, or the equivalent ready to produce.
- A dedicated business bank account. Mixing personal and business funds undercuts the entire point of a separate credit identity.
- A business phone number and physical address listed under the company name. D&B verifies both independently, and a dedicated business line carries more weight than a personal cell.
You can still get a DUNS number without all of these, but everything that follows will be slower and thinner.
Request the Number
The application is on D&B’s website and takes a few minutes. You’ll enter the legal business name exactly as it appears on your formation documents, the physical operating address, a mailing address if different, a primary business phone, and the name of the owner or principal officer. D&B also asks for your legal structure, the year the business started operating, and current employee count. This information seeds the credit profile and is hard to correct later, so enter it carefully.
New requests require two supporting documents that show the legal business name and current physical address. Accepted items include articles of incorporation, a secretary of state filing receipt, an EIN or TIN confirmation letter, a DBA certificate, or a city or state tax permit.1AMS USDA. Quick Start Guide – Required Documents for a New D-U-N-S Request Scan them before you start the form.
The standard request is free and processes within 30 business days. D&B offers paid expedited processing that delivers the number in about eight business days.2Dun & Bradstreet. Get a D-U-N-S Number Unless a contract deadline is pressing, the free option is fine. Expect a call or email from a D&B representative to verify the business and confirm you’re authorized to request the number. Once verified, the nine-digit number arrives by email and stays with the company for life, even through moves or ownership changes.
As soon as the number is active, register for the free D-U-N-S Profile Manager. Verified owners, directors, and officers can use it to view the credit file, request updates, upload financial statements, and dispute payment experiences they believe are inaccurate.3Dun & Bradstreet. D-U-N-S Profile Manager Puts You in Control D&B suggests reviewing your profile at least annually; quarterly is a better rhythm while you’re actively building. Submitted changes go through review and validation, so they aren’t instant and aren’t guaranteed to be accepted.
Open Tradelines That Actually Report to D&B
This is where most businesses lose months. A tradeline is any credit account that reports your payment activity to a credit bureau, and for D&B purposes you specifically need vendors who report to Dun & Bradstreet. Plenty of suppliers don’t. Purchases made on accounts that never report will never show up on your file, no matter how promptly you pay.
The fastest route is Net-30 accounts with vendors known to report. Net-30 means you receive goods or services now and pay the invoice within 30 days. Some vendors offer Net-60 or Net-90 on larger orders. The payment window matters less than whether the vendor reports.
Office supply companies, industrial distributors, and shipping supply vendors are common starting points for businesses with no credit history. Before opening any account, ask the vendor directly which bureaus they report to. Some report only to Experian Business or Equifax Business, which is useful but won’t move your PAYDEX. Accounts that report to D&B plus at least one other bureau are ideal.
Start with two or three accounts, use them for purchases you’d make anyway, and pay every invoice early. Within a few months of consistent reporting from at least two suppliers, a PAYDEX score should appear. Each additional reporting tradeline after that adds depth and makes the file more credible to anyone evaluating it.
Understand What Generates a PAYDEX Score and What the Numbers Mean
The PAYDEX score is D&B’s headline number, and it’s what most lenders and vendors check first. It’s a dollar-weighted score from 1 to 100 that reflects how quickly you pay relative to agreed terms.4D&B. Frequently Asked Questions
The benchmarks:
- 80 means prompt payment within agreed terms. This is the baseline target.
- 90 means payments made early enough to take discount terms.
- 100 means payment anticipates the invoice, arriving well before the due date.
- 70 means about 15 days beyond terms.
- 50 or below means 30 or more days late, which signals serious risk.4D&B. Frequently Asked Questions
An 80 doesn’t mean exceptional. It means on time. To push higher, pay early whenever cash flow allows. Because the score is dollar-weighted, one large invoice paid late will drag the number down further than several small on-time payments will lift it.
D&B won’t calculate a PAYDEX at all until the file contains at least three trade experiences from at least two different suppliers.4D&B. Frequently Asked Questions Until then, PAYDEX shows “UN” for unavailable. This is why getting the first tradelines active and reporting is the real work of building business credit.
Lenders may also review other D&B scores drawn from public filings, company size, and industry risk: the Delinquency Predictor Score and Failure Score (each rated 1 to 5) and the Supplier Evaluation Risk Rating (1 to 9).5Dun & Bradstreet. Business Credit Scores and Ratings The habits that raise PAYDEX — paying on time, keeping the profile accurate, avoiding liens and judgments — help across all of them.
Monitor the File and Fix Errors Fast
D&B’s free tier of Credit Insights shows risk-range indicators for four scores (PAYDEX, Delinquency, Failure, and Supplier Evaluation Risk), a payment history summary, and alerts when someone inquires about your business.6Dun & Bradstreet. Grow with D&B Credit Insights It doesn’t show exact scores or detailed trade data, but it’s enough to see whether the profile is moving in the right direction.
The paid Credit Insights Plus tier (currently $149 per month) adds full score details, detailed payment history, and the ability to submit trade references and financial statements for possible inclusion in the file. That last piece is the reason to consider paying: if you have customers or vendors who pay you on time but don’t report to D&B on their own, you can submit those records for review. Acceptance isn’t guaranteed. If a significant loan or contract is six months out, the paid tier can be worth it before the lender pulls the file. For steady maintenance, the free tier plus the Profile Manager is enough.
Errors on business credit reports are common, partly because D&B aggregates data from many sources and partly because businesses with similar names or addresses get their records crossed. Dispute anything wrong through the Profile Manager, which handles both basic company information and payment experience data.5Dun & Bradstreet. Business Credit Scores and Ratings Under an FTC consent order, D&B must complete investigations of basic identifying information disputes within seven business days (with a possible seven-day extension) and payment experience or public-record disputes within 14 business days (extendable by another 14). Corrections to inaccurate items should appear within four business days after D&B notifies you of the results.7Federal Trade Commission. Dun and Bradstreet Modified Decision and Order Keep screenshots and copies of every dispute you file.
Put the Credit to Work
Once your PAYDEX is at 80 or above with several active tradelines, the profile starts earning its keep. Banks and alternative lenders pull the D&B file when evaluating business loans and credit cards. A strong file lets the company qualify on its own track record rather than your personal credit, which protects personal finances and often unlocks higher credit limits. Better credit compounds: better loan terms mean lower borrowing costs, which mean more cash to pay invoices on time.
Large corporations also pull D&B reports on potential suppliers before signing contracts, checking whether your company has the financial stability to deliver on a multi-month or multi-year agreement. In manufacturing, logistics, and professional services procurement, a clean D&B file can be the difference between making the shortlist and getting screened out early.
One boundary worth naming: the DUNS number is no longer the identifier for federal contracting. The government moved fully to the Unique Entity ID (UEI) issued through SAM.gov in April 2022, and the DUNS number has been removed from federal award management systems.8GSA. Unique Entity ID is Here If you plan to pursue federal work, you’ll register for a UEI separately. Your D&B credit profile can still factor into contracting officers’ responsibility assessments, but the ID number on the paperwork is not the DUNS.
Don’t Build on D&B Alone
D&B is the most recognized business credit bureau, but Experian Business and Equifax Business maintain their own files, and different lenders check different bureaus. A strong PAYDEX means little if your Experian or Equifax file is thin or shows problems.
- The Experian Business Credit Score ranges from 0 to 100. Scores above 80 are considered excellent; scores below 15 are flagged as high risk.
- The Equifax Business Credit Risk Score ranges from 101 to 992. Lower indicates higher risk.
Many vendors who report to D&B also report to Experian and Equifax, so the same tradeline strategy can build all three profiles at once. When evaluating a new vendor, ask which bureaus they report to and favor the ones that report to at least two. Pull your reports at all three bureaus at least once a year to catch errors or discrepancies before a lender does.