How to build business credit quickly with duns number?

The keys to building credit fast with your D-U-N-S number are to:

1. Apply for as many tradelines that report to Dun & Bradstreet as you can
2. Pay all your invoices as early as possible (30 days before due = 100 PAYDEX score)
3. Keep your D&B credit profile up-to-date with accurate financial and employee data

As you build up your business profile and D&B ratings, the more creditworthy you become, and the faster you can start applying for Tier 2 business credit.