Building business credit takes 6–18 months. The steps: (1) Form an LLC or corporation, (2) Get an EIN from the IRS, (3) Open a business bank account, (4) Get a DUNS number from Dun & Bradstreet, (5) Establish 3–5 vendor trade lines that report to business bureaus (Uline, Quill, Grainger), (6) Get a business credit card, (7) Pay everything on time or early. A Paydex score of 80+ in 12–18 months positions you for bank loans and lines of credit at better rates. Note: you can get working capital loans today even without business credit — lenders use personal FICO and bank deposits.
Building Timeline Overview
Step-by-Step: Building Business Credit
Form a Separate Legal Business Entity
Business credit belongs to the business — not you personally. You need an LLC, S-Corp, or C-Corp. Sole proprietors and DBAs operate under your personal SSN and cannot build separate business credit. Cost: $50–$500 depending on state. File with your Secretary of State. Get an Operating Agreement (LLC) or Bylaws (Corp).
Get an EIN from the IRS
Employer Identification Number is your business's tax ID — the equivalent of your personal SSN for the business. Free and instant at IRS.gov. Every credit application, vendor account, and bank account will require it. Critical: never use your personal SSN in place of your EIN on business accounts, or you'll tie the account to personal credit instead of building business credit.
Open a Business Bank Account
A dedicated business checking account is required for business credit building. Lenders, vendors, and bureaus verify business existence through bank accounts. Use the account exclusively for business transactions — no personal expenses. This account will also become your deposit history for working capital loans.
Get a DUNS Number (Dun & Bradstreet)
Dun & Bradstreet (D&B) is the most important business credit bureau. A DUNS number is their unique identifier for your business. Free to register at Dnb.com. Without a DUNS number, many vendor trade lines won't be able to report your payments to D&B, and you won't generate a Paydex score. Takes 30 days to activate after registration.
Establish Vendor Trade Lines (Net 30 Accounts)
These are your most important early moves. Vendor trade lines are accounts with suppliers who extend Net 30 terms (you buy now, pay in 30 days) and report your payment history to business credit bureaus. You need at least 3–5 reporting trade lines before bureaus will generate your score. Start with "starter" vendors who don't require existing business credit.
Target: pay all invoices before Day 30 (Day 25 ideal) to build maximum Paydex score.
Get a Business Credit Card
After 3–6 months with active trade lines and a generated Paydex score, apply for a business credit card. Start with store/fleet cards (Costco Business, Sam's Club, Shell/BP fleet cards) that are easier to get with newer business credit. Then graduate to unsecured business cards (Capital One Spark, Chase Ink, Amex Business). Keep utilization under 30%.
Monitor and Dispute Errors on Business Credit Reports
Pull your business credit reports from D&B, Experian Business, and Equifax Business regularly. Errors are common — a wrong SIC code, incorrect address, or unreported trade line can undermine months of work. Dispute errors directly with each bureau. Unlike personal credit, business credit report monitoring usually requires a paid subscription (CreditSafe, D&B Credit Monitor).
Business Credit Bureaus Explained
| Bureau | Key Score | What It Measures | Who Uses It |
|---|---|---|---|
| Dun & Bradstreet | Paydex (0–100) | Payment timing to vendors/suppliers | Vendors, some lenders, trade creditors |
| Experian Business | Intelliscore (0–100) | Payment history, public records, utilization | Banks, credit card issuers, equipment lenders |
| Equifax Business | Business Credit Risk Score | Delinquency risk, payment patterns | Banks, lenders, equipment financing |
| FICO SBSS | 0–300 | Blended personal + business factors | SBA loans (SBSS minimum: 155 for most lenders) |
Best Vendor Trade Lines for Starter Business Credit
The Paydex Score: What It Is and How to Maximize It
Paydex (Dun & Bradstreet) is the most widely recognized business credit score. It ranges 0–100 and measures only payment timing:
- 100: Paid 30+ days early
- 80: Paid on time (the target)
- 70: Paid 15 days late
- 60: Paid 22 days late
- 50: Paid 30 days late
- Under 50: Significant delinquency — most lenders/suppliers will not extend credit
Strategy: Pay on Day 15–20 (not Day 30) to demonstrate early payment and build maximum Paydex. One late payment on a small number of trade lines significantly drops your score — with 3 trade lines, one late payment pulls Paydex down dramatically. With 10+ trade lines, one late payment has minimal impact.
Common Mistakes That Slow Business Credit Building
- Using personal SSN instead of EIN — ties accounts to personal credit, doesn't build business profile
- Using personal address/phone for business accounts — bureaus verify business legitimacy; inconsistent information triggers review
- Opening only accounts that don't report — many vendor accounts don't report to bureaus; verify before opening
- Paying on exactly Day 30 — technically on time, but "paid early" improves Paydex more than "paid on time"
- Not monitoring reports — errors on business credit reports are common and go uncorrected without active monitoring
- Applying for too many accounts too fast — hard inquiries from multiple lenders in short periods signal risk
- Commingling personal and business finances — lenders look at bank statement behavior; personal purchases in business account raise flags
Need Business Funding While You Build Credit?
Working capital loans based on your deposit history — not your business credit score. Apply today while your credit profile develops.
Apply for Business FundingFrequently Asked Questions
- How long does it take to build business credit?
- A basic business credit profile takes 3–6 months: form the entity, get an EIN, open a business bank account, register with D&B (DUNS number), and establish 3–5 vendor trade lines. Building a strong Paydex score of 80+ takes 12–18 months of consistent on-time payments across multiple trade lines.
- Does personal credit affect business credit building?
- For the initial administrative steps (EIN, business bank account, DUNS, starter vendor trade lines), personal credit doesn't matter — these steps are based on your business's identity, not your personal score. However, when applying for business credit cards or bank products, lenders typically pull personal credit as a secondary check. Strong business credit doesn't erase personal credit — it adds a separate business identity.
- What is a Paydex score?
- Paydex is Dun & Bradstreet's business payment index, scored 0–100. It measures only payment timing to vendors and suppliers. A Paydex of 80 means you consistently pay on time; 100 means you pay early. To maximize your Paydex, pay vendor invoices on Day 15–20 rather than Day 30. Paydex is the most widely referenced business credit score by vendors and trade creditors.
- Can I get a business loan with no business credit history?
- Yes. Working capital loans and merchant cash advances are primarily approved based on personal credit score, business bank deposit history, and time in business — not business credit score. Business credit score matters more for bank term loans, SBA loans, and large credit lines. You can start getting working capital funding on day one of business if deposits are strong enough.
- What are the best starter vendor trade lines?
- Uline (shipping supplies), Quill (office supplies), Grainger (industrial supplies), Crown Office Supplies, Summa Office Supplies, and Wise Business Plans — all report to Dun & Bradstreet, offer Net 30 terms, and don't require existing business credit or a personal guarantee. Get 3–5 of these reporting before applying for business credit cards.