To build business credit from scratch, you create a legal identity for the business (LLC or corporation plus an EIN), open a dedicated business bank account, register for a D-U-N-S number, then open net-30 vendor accounts that report your on-time payments to the business credit bureaus. After 3 to 6 months of those reported payments, you add a business credit card and a small line of credit. Done in this order, you can have a usable business credit profile in 6 to 12 months, not the 30 days some sites promise.

That last part matters. If you take nothing else from this, take this: the "build business credit in 30 days" headlines are marketing. Bureaus need a payment history to score, and history takes months. Below is the real sequence, the real timeline, and the specific vendors that actually report so you don't waste money on accounts that do nothing.

What business credit actually is (and why your LLC doesn't get it automatically)

Business credit is a separate financial reputation tied to your business, not your Social Security number. Three bureaus track it: Dun & Bradstreet (its score is called PAYDEX, 0 to 100), Experian Business (Intelliscore, 1 to 100), and Equifax Business (Business Credit Risk Score). Lenders, suppliers, and insurers pull these to decide whether to extend you terms.

Here's the trap most new owners fall into: forming an LLC does not create a business credit file. Filing your articles of organization makes you a legal entity, not a credit profile. A file only opens once a vendor or lender reports activity under your business name and EIN. Until then you're invisible to the bureaus, and any financing falls back on your personal credit. So building business credit is really one job: getting on-time payments reported under your business identity, over and over, for several months.

Step 1: Lock in your legal foundation (EIN + entity)

You cannot separate business credit from personal credit if there is no legal separation in the first place. Sole proprietors don't have a true firewall, their business activity rolls up to their SSN.

  • Form an LLC or corporation. This creates the separate legal entity the bureaus and lenders look for. (If you're still deciding, our guide on whether you actually need one walks through it.)
  • Get an EIN from the IRS. It's free, it takes about 15 minutes online, and it's the tax ID your business credit file is built around. Apply directly at irs.gov — never pay a third party for this. If you're unsure whether you need one, read what an EIN is and whether you need one.
  • Make your business "real" on paper. A dedicated business phone number, a professional email on your own domain, and a registered business address help your file pass verification at the bureaus and with vendors. A toll-free or local business line listed publicly is a small but genuine credibility signal.

Cost so far: EIN is free. LLC filing runs roughly $35 to $500 depending on your state. Phone and email, a few dollars a month.

Step 2: Open a dedicated business bank account

Lenders and many vendors verify that you have a real business checking account before extending terms. It's also the cleanest way to keep business and personal money from blending, which protects your LLC's liability shield.

You don't need a fancy account, just one in the business's legal name, tied to the EIN, with no monthly fee draining you. See our breakdown of the best free business bank accounts for startups to pick one in an afternoon, and use it for every business expense going forward. That paper trail is what makes you fundable later.

Step 3: Register for a D-U-N-S number

The D-U-N-S number is your free ID with Dun & Bradstreet, the bureau most suppliers and many lenders check first. Without it, you can't have a D&B PAYDEX score.

  • Request it free directly from Dun & Bradstreet. Standard processing is up to 30 business days. D&B sells a paid product (CreditBuilder) that speeds this up, but you do not need to pay to get a D-U-N-S number. Ignore the upsell if money is tight.
  • You don't register for Experian and Equifax the same way; those files form on their own once vendors report.

Reality check on lag times: D&B can take weeks to issue the number and weeks more to reflect new trade lines. This is a big reason the whole process takes months, not days.

Step 4: Open net-30 vendor accounts that actually report

This is the engine of business credit, and it's where most guides go vague. A net-30 account lets you buy supplies now and pay the full balance in 30 days. When the vendor reports your on-time payment, it builds your file.

The catch nobody warns you about: many vendors that advertise "we report to business credit" don't actually report to all three bureaus, or report inconsistently. You can spend money and get nothing.

Vendors commonly used by beginners to start reporting

These are widely used as "starter" trade lines because they accept new businesses and have a track record of reporting. Reporting policies do change, so always verify before you rely on one (see the checklist below).

Vendor What you buy Typically reports to Notes
Uline Shipping, packaging, supplies D&B, Experian Easy approval; useful real supplies
Quill Office and break-room supplies D&B, Experian Often needs a couple of orders first
Grainger Industrial, tools, MRO D&B Good for trades and service businesses
Crown Office Supplies Office supplies D&B, Experian, Equifax Small annual fee; built for credit-building
Summa Office Supplies Office supplies D&B, Experian, Equifax Common starter tradeline

Aim for at least 3 to 5 reporting accounts. Bureaus want to see a pattern, not a single line.

How to verify a vendor really reports (do this before you spend)

Use this quick checklist:

  • [ ] Ask support directly, in writing: "Do you report net-30 payment history, and to which bureaus, D&B, Experian, or Equifax?" Save the reply.
  • [ ] Check whether they ask for your EIN/D-U-N-S at signup. No EIN field is a red flag that nothing will be reported to your business file.
  • [ ] Make one small purchase, pay it early or on time, then check your D&B and Experian Business reports after 30 to 60 days to confirm the line appears.
  • [ ] Don't take "we report" at face value from a sales page. Confirm it shows up on your actual report before opening more accounts with that vendor.

The golden rule: pay before the due date, every time. PAYDEX rewards early payment, a perfect score requires paying ahead of terms, not just on time.

Step 5: Add a business credit card (and understand the EIN-only myth)

Once you have a few reporting trade lines and 3 to 6 months of history, add a revolving account. But here's the distinction almost no guide makes clearly:

Most small-business credit cards still pull your personal credit and require a personal guarantee. "Open a card with just your EIN, no personal credit" is largely a myth for traditional cards. The personal guarantee means you're on the hook if the business defaults.

What's actually closer to EIN-only:

  • Corporate cards that underwrite on business cash flow (for example, Ramp and BILL Divvy/Brex-style products) often skip the personal credit pull and personal guarantee, but they typically require a real business bank balance or revenue to qualify. Great once you have some money moving; not a fit on day one with $0.
  • Net-30 trade lines (Step 4) are the truest EIN-only credit builders for a brand-new business.
  • Secured business cards let you put down a deposit and build, useful if your personal credit is weak (more below).

So sequence it: trade lines first to create the file, then a card. When you do apply for a card, expect a personal credit check unless it's a cash-flow-underwritten corporate card.

Want the exact starter-vendor list and templates as we update them? Subscribe to the howtostart.biz newsletter for the practical playbooks.

Step 6: Monitor, then borrow on purpose

Once the file exists, manage it:

  • Check your reports. D&B (PAYDEX), Experian Business (Intelliscore), and Equifax Business. Some monitoring is paid; D&B offers free self-monitoring of basics.
  • Keep utilization low on any revolving accounts, the same discipline as personal credit.
  • Prioritize the right bureau for your goal. This is where strategy pays off:
If you're after... They tend to weigh...
Trade terms with suppliers D&B (PAYDEX)
SBA / bank loans Personal credit + business history (multiple bureaus)
Equipment financing Experian / Equifax business + the asset
Corporate cards (Ramp/Brex) Business cash flow, less on bureaus
Merchant cash advance Bank deposits and revenue, not bureau scores

If your main goal is supplier terms, pour your energy into D&B and net-30 lines. If it's a bank loan, know your personal credit still matters a lot early on.

A realistic 6 to 12 month timeline

  • Month 1: LLC + EIN, business bank account, request D-U-N-S, open first 1 to 2 net-30 accounts.
  • Months 2 to 3: Open 3 to 5 reporting trade lines total. Pay every invoice early. D-U-N-S issued.
  • Months 4 to 6: First trade lines appear on your reports. PAYDEX/Intelliscore start forming. Add a business credit card.
  • Months 6 to 12: Established profile. You can pursue a small line of credit or vendor terms based on the business, not just you.

Anyone promising a fundable profile in 30 days is selling something.

What if your personal credit is already bad?

You're not stuck, you just take a different on-ramp. Because new-business financing leans on personal credit early, damaged personal credit slows things but doesn't stop the build.

  • Secured business credit cards — put down a deposit, build a payment history.
  • CDFI lenders and community credit unions — Community Development Financial Institutions and many credit unions weigh your story and cash flow, not just FICO. The SBA's microloan program (loans up to $50,000) is delivered through these mission lenders.
  • Net-30 trade lines — most don't pull personal credit at all, so you can start building today regardless of your score.

We cover this path in depth in how to start a business with bad credit.

Frequently Asked Questions

How long does it take to build business credit from scratch?

Plan on 6 to 12 months to have a profile lenders and suppliers actually use. You can get the structure done in a week (EIN, entity, bank account, D-U-N-S request), but scores need reported payment history, and that takes several months of net-30 accounts paid early. The "30 days" claims you'll see are marketing, not how the bureaus work.

Can I build business credit without using my personal credit or SSN?

Partly. Net-30 vendor trade lines are typically true EIN-only credit builders and are the safest starting point. But most business credit cards and bank loans still pull personal credit and require a personal guarantee, especially in your first year. Cash-flow-underwritten corporate cards can skip the personal pull, but they need real revenue or a funded bank account to qualify.

Does forming an LLC automatically create a business credit file?

No. An LLC or corporation creates a separate legal entity, which is a required foundation, but the credit file only opens once a vendor or lender reports activity under your business name and EIN. That's why opening reporting net-30 accounts is the step that actually starts your profile.

What net-30 accounts actually report to the bureaus?

Beginner-friendly options that commonly report include Uline, Quill, Grainger, Crown Office Supplies, and Summa Office Supplies. Reporting policies change, so verify before you rely on any of them: ask support in writing which bureaus they report to, confirm they collect your EIN at signup, then make one small purchase, pay it early, and check your D&B and Experian Business reports after 30 to 60 days to confirm the line shows up.

Which business credit score matters most to lenders?

It depends on the lender. Suppliers and trade-credit decisions lean on D&B's PAYDEX. Equipment financers often weigh Experian or Equifax business scores plus the asset. SBA and bank loans still factor your personal credit heavily early on, and corporate cards or merchant cash advances care more about your business's cash flow and bank deposits than any bureau score. Build the profile your specific goal depends on first.