Business Credit Scores

How D&B PAYDEX Actually Works

Definition: D&B PAYDEX®

PAYDEX is Dun & Bradstreet’s 0–100, dollar-weighted score of a business’s trade payment timeliness based on vendor-reported invoices. 80 signals on-time payments; 90–100 reflect early payments; below 80 reflects increasing lateness.

  • Scope: Vendor trade payment behavior only
  • Weighting: Larger invoices influence more
  • Primary signal: Payment timing trend and consistency
You’ll learn how PAYDEX is built from vendor payment data, how underwriters interpret each range, what weak vs strong payment patterns look like, and the exact next moves to stabilize or lift your score.
If vendors report you pay exactly when promised, PAYDEX shows it fast. If reporting is thin, concentrated in one supplier, or payments slip, it shows that even faster. This page explains how the score is built, what lenders read from each range, what trips owners up, and how to fortify your profile.
We focus on the bureau mechanics D&B discloses, common underwriting interpretations, reporting/verification practices that strengthen the score, and the practical levers you can pull without guesswork. No generic tips—just how the signal is formed and used.

Last Reviewed and Updated: April 2026

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Related Credit Intelligence™ Terms by MyCreditLux™

These terms explain the signals you’ll see in a D&B file and how underwriters translate payment behavior into risk.
  • Business Credit File (bus·i·ness cred·it file · /ˈbiznəs ˈkredət fīl/ · noun) — A compiled record of a business’s credit activity.
  • Business Credit Report (bus·i·ness cred·it re·port · /ˈbɪznɪs ˈkrɛdɪt rɪˈpɔrt/) — Detailed record of business credit.
  • Business Credit Score (bus·i·ness cred·it score · /ˈbɪznɪs ˈkrɛdɪt skɔr/) — Numeric measure of credit risk.
  • Early Payment (ear·ly pay·ment · /ˈɜrli ˈpeɪmənt/ · noun) — A payment made before the due date.
  • On-Time Payments (on-time pay·ments · /än ˈtīm ˈpāmənts/ · noun) — Payments made by or before the due date.
  • PAYDEX Score (PAY·dex score · /ˈpāˌdeks skôr/ · noun) — A D&B score measuring how promptly a business pays bills.

How D&B Paydex Actually Works Frequently Asked Questions

Vendor-reported payment timing weighted by invoice amounts. More on-time or early payments from active, independent reporters move it up; late or inconsistent payments pull it down.
Yes—80 signals on-time payments. But many lenders also expect recent activity, multiple vendors, and no recent derogatories.
Aim for 4–8 independent vendors reporting consistently. That level reduces concentration risk and strengthens lender confidence.
Movement depends on how quickly vendors report fresh data and the dollar weight of new invoices. Expect visible changes within 1–3 reporting cycles when volume is steady.
No. PAYDEX focuses on trade credit from vendors. Bank products influence other business credit scores, not PAYDEX directly.
Add reliable D&B-reporting vendors tied to your normal spend, automate on-time payments, and keep documentation ready for any verification or dispute.

Sources

  1. Dun & Bradstreet. What Is a PAYDEX Score. https://www.dnb.com/resources/what-is-a-paydex-score.html
  2. Dun & Bradstreet. PAYDEX and Trade Payment Information. https://www.dnb.com/products/marketing-sales/dnb-credit-insights/trade-credit.html
  3. U.S. Small Business Administration. SBA Lender Training. https://www.sba.gov/partners/lenders/7a-loan-program/training
  4. Dun & Bradstreet. D&B Business Credit File Overview. https://www.dnb.com/duns-number.html

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Trice Odom

Trice Odom is a Credit & Consumer Finance Strategist and Founding Editor of MyCreditLux™, specializing in institutional credit systems, scoring models, and reporting frameworks. Her work translates complex credit architecture into structured, research-aligned analysis grounded in documented industry standards.Learn More About Trice Odom →