Building Your Small Business Credit: A Practical Guide for Entrepreneurs

One of the most common conversations we have at Summit Bank's business banking desks isn't about loans or checking accounts. It's this: "I've been running my business for three years and I still can't separate my personal credit from my business." It's more common than you'd think, and fixable faster than most people expect.
Why business credit is separate from personal credit
When you apply for a business loan, a line of credit, or even a vendor account with net-30 terms, the lender or vendor often checks your business credit profile, not your personal credit score. Business credit is reported to bureaus like Dun & Bradstreet, Equifax Business, and Experian Business, and it's built by your business's financial behavior, not yours as an individual.
The practical payoff: a strong business credit profile means lower interest rates on loans, higher credit limits, better vendor terms, and personal liability protection when your business finances are cleanly separated from your own.
Step 1: Incorporate or form an LLC
Sole proprietorships can't build true business credit because there's no legal separation between the owner and the business. An LLC or corporation has its own federal EIN, its own bank accounts, and its own credit identity. If you're a sole proprietor in New England, forming an LLC in your state typically takes 1 business day online and costs between $50 (Maine) and $500 (Massachusetts).
Step 2: Open a dedicated business checking account at Summit Bank
All business income and expenses should flow through a dedicated account. Lenders and vendors look at business bank statements when evaluating creditworthiness, and a mixed personal-business account is an immediate red flag. Summit Bank business checking includes no monthly fee on balances above $1,000, free ACH transfers, and integrated bookkeeping exports.
Step 3: Get a DUNS number (free, 1-2 business days)
Dun & Bradstreet's PAYDEX score is the most widely referenced business credit score among commercial lenders and suppliers. To build a PAYDEX score, you need a D-U-N-S Number. Register at dnb.com — it's free and typically arrives within 1-2 business days.
Step 4: Open a secured business credit card
If your business has no credit history, start with a secured card (backed by a cash deposit). Use it for predictable monthly expenses like software subscriptions or fuel, and pay it in full every statement. After 6-12 months of on-time payments, most secured cards graduate to unsecured, and the payment history transfers to your business credit file.
Summit Bank offers a secured business Mastercard with a $500 minimum deposit, no annual fee, and automatic credit review at month 12.
Step 5: Establish vendor trade lines with net-30 accounts
Trade lines are vendor accounts where you buy supplies or services now and pay within 30 days ("net-30"). Vendors who report payment behavior to Dun & Bradstreet, Equifax, or Experian Business will build your PAYDEX score faster than almost anything else. Office supply stores, cleaning suppliers, and commercial printers commonly offer net-30 accounts.
Pay these invoices early if possible. PAYDEX rewards early payment: a score of 80 means paying on time; a score of 100 means paying early.
Step 6: Review your business credit reports annually
Unlike consumer credit, you have to pay to access your full business credit reports from the major bureaus. It's worth it. Check for errors, unfamiliar accounts, or reporting gaps. Dispute errors directly with the bureau.
Talk to a Summit Bank Business Advisor
Building business credit takes 12-24 months of consistent activity, but the compounding benefits over the life of your business are significant. Summit Bank business advisors at all 42 New England branches can review your current profile, identify gaps, and help you build a roadmap specific to your industry and growth stage.