How to Build Business Credit Before You Borrow

How do you build business credit?

Business credit is the payment and public record history that bureaus keep under a company's own name, separate from the owner's personal file. You learn how to build business credit by setting up that file on purpose, then feeding it on-time payments for months before you apply.

The order matters more than speed. Form a separate legal entity, get an EIN and put a bank account and a listed phone in the company's name. Then request a D-U-N-S number and open supplier accounts that report payments.

Pay those accounts on time, and check what the bureaus show.

No step here buys a score in a month. Each one adds a record, and records need time to add up. If you are also getting ready for a first application, see how to prepare your business for funding.

Commera is a broker, not a lender. We compare offers from our lender partners.

What should you set up first?

The first setup is a company identity that a bureau can tell apart from you. Experian lists the steps in order: form an LLC or corporation, get a federal EIN, open a bank account in the legal business name and set up a listed business phone. Only then, per Experian, should you request credit in the company name.

The EIN costs nothing. The IRS issues it online for free and warns against websites that charge for one. In the IRS's words, "You never have to pay a fee for an EIN."

The D-U-N-S number is free as well. Per Dun & Bradstreet, normal processing can take up to 30 business days, and the paid expedite option is not required. Run the D&B lookup first. Your company may already have a number.

Structure is a legal and tax choice. Consult an attorney or a tax advisor before you pick one.

Example: company file setup

• Legal entity. Form the LLC or corporation so the company stands apart from you as the owner.
• EIN. Apply directly on the IRS site and keep the confirmation with your company records.
• Bank account. Open it in the exact legal name and run every company payment through it.
• Listed phone. Use one dedicated business number and keep it listed under the company name.
• D-U-N-S number. Search the D&B lookup first, then request the free number if nothing turns up.

How do you get trade accounts reported?

Trade accounts reach a bureau only when the supplier sends its payment records there. Per Dun & Bradstreet, the PAYDEX score is built from trade experiences that suppliers and vendors submit. D&B also states that payment experiences that go unreported cannot be considered.

That changes how you pick a supplier. Before you open an account, ask which bureaus it reports to, and ask the same of any card issuer that offers a company card. A supplier that never reports can still be a good supplier, but it does not build your file.

Experian works the same way. Once the setup steps are done, trades in the company name are reported to Experian, according to its guide. Per Experian, its score then reads trade experiences, balances, payment habits, credit utilization, public records and years on file.

Trade credit is the start, not the goal. A file with history matters for the products you apply for later. Our guide to types of small business financing shows how those products differ.

Worked example: a 12-month plan for a new company

A 12-month plan for a new company runs from setup in month one to comparing financing in month twelve. The table lists actions only, with no dollar amounts. Each row names what the step adds to the file and where you can see it.

Methodology: Illustrative sequence, not a promise of a score. It assumes a newly formed company with no file at D&B or Experian. The number of supplier accounts is an assumption of this example, not a bureau requirement. Timing for each step depends on the supplier and the bureau.

Read the table as an order, not a schedule. If a supplier reports late or not at all, the later rows shift. One row never shifts. Every invoice gets paid by its due date.

How long does each record stay on file?

Each record on an Experian business credit report stays for a fixed period. Negative records stay longest.

Source: Experian, How long data stays on a business credit report, as of November 8, 2026.

A UCC lien filed against company assets shows on the report for its full period. Check whether one is already there before you apply.

The plan in the worked example above lasts a year. A late payment stays on the trade record far longer. One missed due date can outlive the plan that was meant to build the file.

Worked example: paying an $8,000 supplier invoice early, on time or late

Paying a supplier invoice early can save money and still leave a clean payment record. Paying late costs money and leaves a mark that stays. A Commera illustrative calculation on one invoice shows the gap.

Methodology: Commera illustrative calculation, not an offer and not a real transaction. The company owes one $8,000 supplier invoice on 2/10 net 30 terms: a 2% discount if paid by day 10, otherwise the full amount by day 30. The 1.5% late fee is an assumption of this example, not a rule suppliers follow. The invoice is paid from the company's own cash.

The discount is worth more than it looks. In a Commera illustrative calculation, a 2% discount for paying 20 days sooner works out to about 37.2% a year: (2 / 98) × (365 / 20). Early payment pays off when the company has spare cash.

The late case costs $120 in this example. The record lasts longer than the fee. Per Experian, trade data stays on file for 36 months.

This example does not predict how a score moves after any single payment. It shows only what each choice costs and what the payment record says.

When is the file ready for a loan application?

No universal score marks a business credit file as ready for a loan application. A file is in better shape when it shows a steady run of on-time payments from accounts that report and no open errors.

Surveys give a reference point, not a rule. In the Federal Reserve's 2026 Small Business Credit Survey, a firm counts as "low credit risk" with a business credit score of 80 to 100 or a personal score of 720 or higher. That is the survey's own definition, not a lender cutoff. The survey groups each firm by the score it used to obtain financing, business or personal.

Lenders read more than the company score. Expect questions about your personal credit and about the cash flow in your bank statements. Pull the company reports from D&B and Experian before you apply. Fix errors first.

Then match the product to the need. A revolving need often fits a business line of credit. A one-time purchase may fit a term loan, so compare business loan options side by side. To see where the company stands before a full application, check your funding options.

Broker disclosure: Commera Finance is a broker, not a direct lender. Financing providers make their own eligibility, underwriting, approval, pricing, and term decisions.