Your PAYDEX score is the most important number in your business credit profile — but most business owners have never heard of it. Here's what it is, how it's calculated, and how to push it toward 100.
If you've ever applied for a business loan, a vendor account, or a commercial lease, there's a good chance someone pulled your PAYDEX score — even if nobody told you about it. The PAYDEX score is Dun & Bradstreet's flagship business credit score, and it's one of the most widely used metrics in commercial lending and trade credit.
How the PAYDEX Score Is Calculated
The PAYDEX score ranges from 0 to 100 and is based almost entirely on your payment history with vendors and suppliers. Unlike personal credit scores, which factor in credit utilization, length of credit history, and types of credit, the PAYDEX score is a pure measure of payment timing.
| PAYDEX Score | Payment Behavior | Risk Level |
|---|---|---|
| 100 | Pays 30+ days early | Minimal risk |
| 80 | Pays on time (net terms) | Low risk |
| 70 | Pays 15 days late | Moderate risk |
| 50 | Pays 30 days late | High risk |
| 20 or below | Pays 120+ days late | Severe risk |
To generate a PAYDEX score, Dun & Bradstreet requires a minimum of three payment experiences reported by vendors or suppliers. This means you need at least three trade lines that actively report to D&B — and many vendors do not report unless you specifically ask them to.
Why Your PAYDEX Score Matters
A strong PAYDEX score (80 or above) signals to lenders and vendors that your business is financially reliable. It can help you qualify for better loan terms, higher credit limits, and net-30 or net-60 payment terms with suppliers — which effectively gives you interest-free short-term financing.
A weak PAYDEX score, on the other hand, can result in loan denials, higher interest rates, and vendors requiring upfront payment instead of extending credit. In competitive industries, your business credit profile can be the difference between winning and losing contracts.
How to Improve Your PAYDEX Score
- Register for a free D-U-N-S Number at dnb.com — this is the foundation of your D&B profile.
- Establish trade lines with vendors who report to D&B — office supply companies, fuel card providers, and wholesale distributors are common options.
- Always pay early — a score of 100 requires paying 30+ days before the due date, not just on time.
- Request that existing vendors report your payment history — many will do so if you ask.
- Monitor your D&B report quarterly and dispute any inaccurate negative entries promptly.
How Long Does It Take?
With consistent effort, most businesses can achieve a PAYDEX score of 80 within 6–12 months. Reaching 100 requires sustained early payment behavior across multiple trade lines and typically takes 12–18 months. The key is consistency — one late payment can drop your score significantly.