How to Build a Paydex Score of 80: The Complete D&B Scoring Guide

The Paydex score is Dun & Bradstreet's measure of how promptly your business pays its vendors and suppliers. It runs from 0 to 100. A score of 80 means you pay invoices on the due date. A score of 100 means you consistently pay before the due date. For most lenders, 80 is the minimum threshold for serious business credit consideration — it signals a business that honors its payment commitments.

How Paydex Is Actually Calculated

Paydex is a dollar-weighted average of how promptly you paid across all reported tradelines in the last 24 months. Dollar-weighted means larger invoices carry more influence than small ones — a $5,000 invoice paid 15 days late hurts your score more than five $100 invoices paid on time. This is why payment discipline on all accounts matters, not just the small starter accounts.

Minimum Requirements to Generate a Paydex Score

D&B will not produce a Paydex score until your file meets these minimums:

• At least 3 tradelines reporting to D&B within the last 12 months
• At least 1 payment experience reported in the last 3 months
• An active DUNS number with a complete business profile (address, phone, SIC code, employee count)

This is why applying to only 2 Tier 1 vendors does not generate a score — even if both are reporting. You need that third tradeline to activate the scoring model.

The Fastest Path to Paydex 80

• Apply to 5 Tier 1 NET-30 vendors in month 1 — five applications gives you redundancy. If two have reporting delays, you still hit the 3-tradeline minimum faster.
• Make a purchase from each vendor within 7 days of account opening — vendors do not report accounts with zero transaction history. The clock on your first reporting cycle starts with your first purchase.
• Pay every invoice within 15 days of receipt — not on day 29 of your NET-30 terms, but within 15 days. Early payment is what separates a Paydex 80 from a Paydex 100 and signals to lenders that you proactively manage payment obligations.
• Add 2 multi-bureau vendors in month 2 — Crown Office Supplies and Summa Office Supplies both report to D&B and Experian, efficiently building two bureau files simultaneously.
• Never miss a payment date on any account — a single 30-day late payment pulls your Paydex from 80 to 60 overnight, and recovery takes 3–4 payment cycles with the same vendor.

How Long Does It Take to Reach Paydex 80?

With 5 Tier 1 accounts opened in month 1, purchases made immediately, and payments within 15 days consistently:

• Day 30–45: First 1–2 tradelines appear on D&B file
• Day 45–60: 3 tradelines reporting — Paydex score activates (typically 70–80 at this stage)
• Day 60–90: 4–5 tradelines reporting — Paydex stabilizes at 80+ with consistent early payment
• Month 4–6: Score reinforced by additional reporting cycles — Paydex 80–100 range with clean history