What is business credit and how is it different from personal credit?

Business credit is a separate credit file tied to your business's EIN, not your SSN. Three main bureaus track it: Dun & Bradstreet (PAYDEX score, 0-100, where 80+ is good), Experian Business (Intelliscore Plus, 0-100), and Equifax Business (Business Credit Risk Score, 101-992). Lenders, suppliers, and landlords use these scores to evaluate the business independently of your personal credit. The strategic point: building business credit lets you eventually borrow money for business purposes without putting your personal credit at risk through a personal guarantee — but it takes 18-36 months from a clean start, and most early loans still require a personal guarantee anyway.

Business credit explained: PAYDEX, Experian Business, and how to build it

If you're self-employed and considering an SBA loan, a business credit card, a self-employed mortgage, or commercial real estate financing, you're going to interact with business credit eventually. Most consumer-finance content skips this entirely.

How business credit differs from personal credit

Dimension	Personal credit	Business credit
Identifier	SSN	EIN (Employer Identification Number)
Bureaus	Equifax, Experian, TransUnion	Dun & Bradstreet, Experian Business, Equifax Business
Scoring scales	FICO 300-850	PAYDEX 0-100, Intelliscore 0-100, BCRS 101-992
Public access	Restricted by FCRA	Anyone can view (with paid bureau access)
What's reported	Personal accounts	Business trade lines, public filings, payment history to suppliers
Time to build	6-12 months for usable score	18-36 months for usable score
Usage by lenders	Personal underwriting	Business underwriting, often paired with personal score

The biggest practical difference: business credit is public. Anyone can pay D&B for a credit report on your business. Personal credit reports are restricted to entities with permissible purpose under FCRA.

The three main bureaus

Dun & Bradstreet (D&B) — PAYDEX

Most influential business credit bureau in the US. Their scoring metric:

PAYDEX: 0-100 scale measuring payment performance only
- 80+ = paying as agreed
- 70-79 = sometimes late but recovering
- Below 70 = significant payment issues

PAYDEX is calculated from D&B's database of trade-credit relationships — when a vendor reports your payment behavior, D&B aggregates it. Sources include:

Trade vendors (your suppliers)
Banks and lenders
Public records (UCC filings, judgments, bankruptcies)

To even have a PAYDEX score, you need a D-U-N-S Number — D&B's identifier for your business. Free to obtain at dnb.com.

Experian Business

Their flagship score is Intelliscore Plus, 0-100, weighted by:

Payment history (30%)
Trade lines (15%)
Public records (10%)
Demographic factors (industry, size, age, etc.) (15%)
Risk factors (30%)

Higher granularity than PAYDEX; covers risk factors PAYDEX doesn't see.

Equifax Business

Business Credit Risk Score, 101-992. Used heavily by some lenders; less commonly cited than the other two.

How to build business credit from zero

Phase 1: Foundation (Month 1)

Form a legal entity — LLC, S-corp, or C-corp. Sole proprietorships can technically build business credit but it's tied to your SSN, defeating the separation.
Get an EIN — IRS, free, takes 10 minutes online.
Open a dedicated business bank account under the legal entity's name. Don't co-mingle personal and business funds.
Get a D-U-N-S Number — free at dnb.com. Takes 1-30 days to issue.
Register your business with state and local authorities as required for your industry.
Set up a business address and phone that's distinct from your personal address. P.O. boxes and virtual mailboxes are fine.

Phase 2: First trade lines (Months 2-6)

Open accounts with vendors that report payment behavior to the business credit bureaus. The classic "starter vendor" list — businesses that extend net-30 trade credit and report:

Uline (industrial supplies) — easy approval, reports to D&B
Quill (office supplies) — reports to D&B and Experian Business
Grainger (industrial/MRO) — reports to D&B
Crown Office Supplies — reports to D&B
Summa Office Supplies — reports to D&B and Experian Business

Pattern: open accounts, place small orders ($50-100), pay before the net-30 window expires (paying early is rewarded by PAYDEX more than paying on time). After 60-90 days, your initial PAYDEX score appears.

Phase 3: Trade credit + business cards (Months 6-12)

Once you have 3-5 starter vendors paying clean, you can graduate to:

Business credit cards reporting to commercial bureaus (Capital One Spark, Chase Ink, AmEx Business)
Larger trade credit ($1K-$5K limits)
Industry-specific suppliers in your line of business

Most business credit cards require a personal guarantee at this stage. The personal guarantee links your personal credit to the business obligation — a default would damage both. This is normal and unavoidable for most small businesses.

Phase 4: Banking relationships (Months 12-24)

Open small business loans, lines of credit, or vehicle loans that report to commercial bureaus. The goal at this phase is to demonstrate the business can handle larger debt obligations on its own.

Phase 5: Maturity (Month 24+)

After 24 months of consistent reporting:

PAYDEX 80+ is achievable
Some lenders will extend credit without personal guarantee
SBA underwriting is more accessible
Commercial real estate financing becomes possible

Common mistakes

Sole proprietorship and expecting business credit. Sole props use the owner's SSN and effectively don't have separate business credit. Form an LLC or corp first.

Co-mingling personal and business spending. Once your bank statements show personal Netflix charges from the business account, the line between you and the business is blurred. Lenders cite this in declined applications.

Skipping the D-U-N-S number. Without a D-U-N-S, no PAYDEX. Some businesses operate for years without one and wonder why their business credit is "invisible."

Using personal credit cards for business expenses. Tax issues aside, those expenses don't build business credit. Business expenses should run through business credit cards or trade lines that report to commercial bureaus.

Believing "no personal guarantee" claims. Many products marketed to small business owners claim "no personal guarantee" but actually require one buried in the fine print. Read every credit application carefully. True no-PG financing is rare and usually requires 24+ months of strong business credit.

When business credit really matters

The benefit isn't day-to-day operations. It's:

Borrowing capacity decoupled from your personal credit. A bad personal score year (medical issue, divorce) doesn't kill the business's borrowing ability if business credit is strong on its own.
Larger lending capacity. Personal credit caps at ~$50K-$100K of total unsecured exposure for most consumers. Business credit can scale to $500K-$5M+ with the right history.
Supplier relationships and cash-flow flexibility. Net-30, net-60, and net-90 terms from vendors are essentially free working-capital financing. PAYDEX 80+ unlocks better terms.
Eventual personal-guarantee removal. Some lenders will release personal guarantees after 2-5 years of strong business credit. This is the actual "separation of personal and business" most founders are told they get on day one but actually have to earn over years.

Where Paliscore fits

If you've flagged a business or self-employed status in the readiness quiz, the readiness brief includes business-credit groundwork as a separate roadmap track. We don't replace D&B, Experian Business, or your CPA — we surface where your business-credit posture fits relative to your funding lane.

Take the quiz.

Sources

Dun & Bradstreet, "What is a PAYDEX score?" — dnb.com
Experian Business, "Intelliscore Plus" — business.experian.com
IRS, "Apply for an Employer Identification Number" — irs.gov
SBA, "Establishing business credit" — sba.gov

Business credit reporting practices vary by industry, region, and bureau. Verify with each potential vendor before assuming they report.