Business Credit Score: What It Is and How to Build It

Quick answer: A business credit score is a number that shows how likely your company is to pay its debts and suppliers on time. In the US, the main scores come from Dun and Bradstreet (Paydex, 1 to 100), Experian and Equifax, plus FICO's SBSS score used by lenders. You build business credit by setting up your business properly and paying reporting accounts on time.

Lenders, suppliers, landlords and insurers use your business credit score to decide whether to extend credit, on what terms, and at what price. A strong score can mean net-30 terms from suppliers, higher card limits and better loan rates. A thin or weak file can mean deposits, personal guarantees or rejection.

This guide explains how business credit scores work in the United States, what a Paydex score and a D-U-N-S number are, and how to build business credit step by step. It is general information, not financial or legal advice. Bureaus change their models and products, so check each bureau's own site for current details.

What is a business credit score?

A business credit score summarises the information in your company's business credit file. Unlike personal credit, where Equifax, Experian and TransUnion hold files tied to your Social Security number, business credit files are tied to your business and are kept by different bureaus, each with its own scoring models.

Information in a business file can include:

• Payment history with suppliers, lenders and card issuers.
• Credit utilisation and outstanding balances.
• Public records such as liens, judgments and bankruptcies.
• Company details: age, size, industry and legal structure.
• Collections and overdue accounts.

Anyone can typically buy a report on your business, which is one reason to keep an eye on what it says.

The main business credit scores

Bureau / model	Score	Range	What it mainly measures
Dun and Bradstreet	PAYDEX	1 to 100	Dollar-weighted payment timeliness to suppliers
Dun and Bradstreet	Delinquency and failure scores	Varies by model	Risk of severe late payment or business failure
Experian	Intelliscore Plus	Commonly reported as 1 to 100	Risk of serious delinquency
Equifax	Business credit risk and payment scores	Varies by model	Payment behaviour and risk of default
FICO	Small Business Scoring Service (SBSS)	0 to 300	Blend of business and owner credit, used by lenders

Ranges for some models vary by product and change over time, so confirm on the bureau's website. The important point is that your business has several scores, not one, and each lender may look at a different combination.

Paydex score explained

The Paydex score is Dun and Bradstreet's best-known business score. According to Dun and Bradstreet, it runs from 1 to 100, with higher scores indicating a business is more likely to pay on time. It is a dollar-weighted indicator of past payment performance, calculated from trade experiences: payment records that suppliers and vendors submit and that Dun and Bradstreet reviews.

Dollar-weighted means larger payments count for more. Paying a $10,000 supplier bill 20 days late will hurt more than paying a $100 bill late. A score around 80 is widely described as reflecting on-time payment, with higher scores reflecting paying before the due date, but check Dun and Bradstreet's current guidance for exact bands.

To get a Paydex score at all, enough suppliers need to report your payments. Sources differ on the exact minimum number of trade experiences, so ask Dun and Bradstreet or check its current documentation.

Here is a simple illustration of dollar weighting. Suppose a business pays two suppliers in a month: a $9,000 invoice on time and a $1,000 invoice 30 days late. Because 90% of the dollars were paid promptly, the late payment drags the score down less than it would if the amounts were reversed. That is why the largest bills deserve the most attention. If cash is short, prioritise paying big trade accounts on time and talk to smaller suppliers early about a short extension rather than simply paying late.

What is a D-U-N-S number?

A D-U-N-S number is a unique nine-digit identifier that Dun and Bradstreet assigns to a business location. It is how Dun and Bradstreet links trade experiences and other data to your company. Without one, there is no Dun and Bradstreet file and no Paydex score.

You can request a D-U-N-S number on the Dun and Bradstreet website. A free request option is offered, and paid products for faster processing and credit monitoring are also sold; you do not need to buy those to get the number. Note that the US federal government replaced the D-U-N-S number with the Unique Entity ID (UEI) for federal contracting registrations in 2022, so you no longer need a D-U-N-S number for SAM.gov. It still matters for business credit and many corporate suppliers.

How to build business credit: step by step

1. Choose a business structure. An LLC or corporation separates your business from you legally. Sole proprietors can build business credit too, but lenders lean more on personal credit. Our guide to LLC vs sole proprietorship compares the options.
2. Get an EIN. An Employer Identification Number from the IRS is free and identifies your business for tax and banking. See how to get an EIN.
3. Open a business bank account. Keep business money separate. Many lenders want to see business bank statements.
4. Use consistent business details. Your legal name, address and phone number should match across your bank, state filing, IRS records, D-U-N-S file and website. Mismatches can split your credit history.
5. Get a D-U-N-S number. This creates your Dun and Bradstreet file.
6. Open trade accounts that report. Ask suppliers whether they report payments to business bureaus. Net-30 accounts for things you already buy are a common starting point.
7. Add a business credit card. Choose one that reports to business bureaus and pay it in full.
8. Pay early or on time, every time. Payment history is the biggest factor in Paydex and an important one in other scores.
9. Monitor your reports. Check your files with each bureau and dispute errors with evidence.

Worked example: building a first score

Maria runs a small landscaping LLC. She has an EIN and a business checking account but no business credit file. Here is a realistic first-year plan:

• Month 1: requests a free D-U-N-S number and makes sure her address and phone match everywhere.
• Month 2: opens net-30 accounts with her mulch supplier and an equipment parts vendor that both report to bureaus. She buys about $600 a month across them, items she needs anyway.
• Month 3: gets a business credit card that reports to business bureaus, uses it for fuel, and pays in full each month.
• Months 4 to 12: pays every supplier invoice a few days before the due date and checks her reports each quarter.

She also keeps a simple log of each supplier, its payment terms, whether it reports to a bureau and the date she paid each bill. When she later applies for an equipment loan, that log and her bank statements help her answer the lender's questions quickly and spot any late payment that was recorded incorrectly. Small habits like this make a thin credit file easier to grow and easier to defend if something goes wrong.

If her suppliers report regularly, Maria may see a first score within a few months and a stronger profile by year end. The total cost is close to zero, because she only buys what her business already needs.

How your invoicing affects business credit

Your own invoices do not usually feed into your business credit score, but they affect it indirectly. Slow-paying clients squeeze cash flow, and tight cash flow is often why businesses pay their own suppliers late. Getting paid faster helps you pay others on time.

• Send invoices promptly with clear due dates. Our guide to invoice payment terms explains options such as net 15 and net 30.
• Follow up on overdue invoices quickly. See how to get paid faster.
• Track receivables so you know what cash is coming. Read our cash flow management guide.
• If you extend credit to your own customers, set a policy. Our customer credit policy guide shows how.

When you check a new customer's business credit before offering terms, you are using the same system from the other side.

Business credit score vs personal credit score

Factor	Business credit	Personal credit
Tied to	Business name, EIN and D-U-N-S number	Your Social Security number
Main bureaus	Dun and Bradstreet, Experian, Equifax	Equifax, Experian, TransUnion
Common scales	1 to 100 (Paydex), 0 to 300 (SBSS)	Typically 300 to 850
Who can see it	Generally available to buyers of reports	Restricted to permissible purposes
Free annual report	Not guaranteed	Available from the three bureaus

One practical difference is access. In the US you can get free personal credit reports from the three consumer bureaus, but there is no equivalent guaranteed free report for business credit. Some bureaus offer limited free views or alerts, while full reports and scores are usually paid. Budget a small amount once or twice a year to check your files, especially before applying for financing.

Many small business lenders check both. The FICO SBSS score, for example, can combine business and owner credit data. Keep your personal credit healthy as well, especially while your business file is thin.

How lenders use your business credit score

Different users of business credit data look for different things. A supplier offering net-30 terms may check your Paydex score and payment trends to decide your credit limit. A bank considering a loan or line of credit may pull an SBSS score along with your financial statements, tax returns and personal credit. A landlord or equipment lessor may check whether you have liens or judgments. Because each one weighs the information differently, a business credit score is best seen as one input into a decision, not a pass or fail on its own.

Keeping tidy financial records helps here too. Lenders often ask for a profit and loss statement and a balance sheet alongside credit reports, and clean records make approvals faster.

Common mistakes to avoid

• Using personal cards and accounts for business spending, which builds no business history.
• Opening accounts with suppliers that do not report payments.
• Letting small bills slip; dollar weighting softens but does not remove the impact.
• Inconsistent business names or addresses across records.
• Paying for expensive credit-building packages you do not need. The D-U-N-S number itself can be requested free.
• Ignoring personal guarantees. Read what you sign, because defaults can reach your personal credit.

If you are weighing funding options, our comparison of invoice financing vs a line of credit explains how each relies on credit. For decisions with legal or tax consequences, check with a qualified adviser.

Conclusion

A strong business credit score opens the door to better supplier terms, higher limits and cheaper financing. Set up your business properly, get a D-U-N-S number, open accounts that report, and pay on time or early. Healthy cash flow makes that easier, and it starts with clear, prompt invoices. Create yours with our US invoice generator and keep your receivables moving.