How to Build Business Credit From Zero (2026 Guide)

Your personal credit score took years to build. Business credit can be established in 6 months — if you know the sequence. Most new business owners either don't know business credit exists or get it wrong by skipping the foundation steps.

Step 1: Establish Your Business Identity (Week 1-2)

Business credit bureaus (Dun & Bradstreet, Experian Business, Equifax Business) need to recognize your business as a separate entity. Three things must be in place before you start:

1. EIN (Employer Identification Number). Free from IRS.gov. Takes 5 minutes online. This is your business's Social Security number — every credit application requires it.
2. Formal business entity. LLC or corporation — not a sole proprietorship. Sole proprietors have no legal separation between personal and business credit. LLC filing costs $35-500 depending on state. See our LLC cost by state guide for exact fees.
3. Dedicated business bank account. Open a business checking account at your bank with your EIN and LLC documents. This creates a financial paper trail that lenders verify. Cost: $0-25/month depending on the bank.

Step 2: Get Your D-U-N-S Number (Week 2-6)

The D-U-N-S number is the master key to business credit. Dun & Bradstreet assigns a 9-digit identifier that vendors, lenders, and credit bureaus use to track your business credit history. It's free but takes 30 days (or $229 for expedited 1-5 day processing). Apply at dnb.com/duns. You need this before opening vendor accounts, because vendors report payment history to your D-U-N-S number.

D&B's PAYDEX score (0-100) is the most widely used business credit score. An 80 means you pay on time. A 100 means you pay early. Below 50 signals late payments. Lenders generally want 80+ for approval.

Step 3: Open Net-30 Vendor Accounts (Month 2-3)

Net-30 vendor accounts are the building blocks. These are suppliers that extend you 30-day payment terms — buy supplies now, pay in 30 days. The key: they report your payment history to D&B (not all vendors do). Open 3-5 reporting accounts in your first 60 days.

Vendors that report to D&B and are known to approve new businesses:

The strategy: buy something small ($50-100) from each vendor, pay the invoice 5-10 days early. Early payment builds PAYDEX faster than on-time payment. Repeat monthly for 3 months to establish a consistent payment pattern. Total cost: $150-500 in actual purchases you'd make anyway (office supplies, shipping materials).

Step 4: Apply for a Business Credit Card (Month 4-6)

After 3-4 months of on-time vendor payments, apply for a business credit card. Start with cards designed for new businesses:

1. Secured business credit cards (deposit required): approve almost anyone with an EIN and bank account. Capital One Spark Secured ($200 deposit) reports to business bureaus.
2. Store credit cards: Home Depot Pro, Lowe's Business, Amazon Business — easier approval than bank cards, report to business bureaus.
3. Unsecured business cards: Chase Ink, Amex Blue Business — require 680+ personal credit score since your business credit history is still thin. Apply after 6 months of vendor account history.

Keep utilization under 30% on each card. Pay the full balance monthly. This builds both your business credit score and demonstrates creditworthiness for future loan applications.

Step 5: Monitor and Maintain (Ongoing)

Check your D&B report quarterly. D&B offers free monitoring through CreditSignal. Experian Business reports are available through Nav.com (free tier). Errors on business credit reports are more common than personal reports because the data collection process relies on vendor reporting, which is less standardized. Dispute inaccuracies immediately — a single late-pay report from a vendor error can drop your PAYDEX 20+ points.

The 6-month milestone: with 3-5 vendor accounts paying early, one business credit card with low utilization, and a PAYDEX of 80+, you're positioned to apply for a small business line of credit ($10K-50K) or begin the SBA loan application process.

What This Costs

Total investment to establish business credit: $185-1,250 over 6 months. The vendor purchases aren't a "cost" if you're buying supplies you'd need anyway — they're just routed through accounts that build your credit profile.