The Fed's discount window rate is 3.75% as of late August 2026 — separate from Bank Prime at 6.75% — here's what that discount rate actually means for your business credit file, apart from what it means for your borrowing costs.
A note on terminology used on this page: BCC Supplies does not lend money. A BCC Supplies membership is a commercial installment contract, reported to the business credit bureaus as a business installment tradeline — some pages also describe this as an "installment loan" in a descriptive sense, not a cash loan from a lender. See how this is structured →
The Bank Prime Loan Rate is 6.75 percent as of July 1, 2026.2 Most business credit cards, lines of credit, and variable-rate small business loans are priced as prime plus a margin, so this single number sets the floor for what a lender charges you before your own risk profile is even considered.2
Here's the part that doesn't get said enough: the interest rate on a tradeline has nothing to do with whether it helps your business credit file. A business installment account reports payment history, account age, and credit mix to the bureaus regardless of whether the underlying rate is 6.75 percent or 16.75 percent.2 Founders who fixate on rate while ignoring reporting behavior are optimizing the wrong variable.
The Discount Window Primary Credit Rate — what the Federal Reserve charges banks for short-term backup funding — sits at 3.75 percent as of August 27, 2026.1 That rate is a plumbing number for the banking system, not something a small business borrows at directly, but it moves in the same direction as prime and helps explain why prime sits where it does.1
The gap between the two rates — 3.75 percent at the discount window versus 6.75 percent prime — is roughly 3 percentage points, which is the built-in spread banks use to price risk and profit into commercial lending.12 For a business owner, the practical takeaway isn't the spread itself — it's that both rates are set by macro policy, not by your business credit file, and no amount of PAYDEX-watching changes what the Fed charges banks.
No — prime rate affects the cost of borrowing, not your ability to open and build tradelines. At 6.75 percent prime,2 a business installment account still reports the same way to Dun & Bradstreet, Experian Business, and Equifax Business that it would at any other prime level.
What actually determines whether your file builds is simpler than the rate environment: does the account report to the bureaus at all, is it in the business's name and EIN, and is it paid on time. Rate is a cost-of-capital question; reporting is a credit-file question, and founders often confuse the two.
Use prime rate to shop the cost of any variable-rate financing you already qualify for, but don't let rate headlines distract from the reporting question. At 6.75 percent prime,2 a business credit card or line priced at prime plus 5, for example, would land near 11.75 percent — a number worth comparing across lenders before you sign.
Separately, and more importantly for a business that's still building its file, confirm every account you open actually reports to a business bureau. Plenty of net-30 vendor accounts and even some bank lines never furnish data to D&B, Experian Business, or Equifax Business, which means the rate you negotiated is irrelevant to your credit-building goal.
A BCC Supplies membership is a commercial installment contract — not a loan — that reports to the business credit bureaus as a business installment tradeline, so your file keeps building no matter where prime rate moves next.
See Your Options →The Federal Reserve Bank of St. Louis publishes both series discussed here — the Bank Prime Loan Rate and the Discount Window Primary Credit Rate — and BCC Supplies is not affiliated with the Federal Reserve or any of its regional banks. We pull these figures directly from FRED because founders deserve the real macro number, not a rounded-off guess, before they decide what to do with their own credit file. What BCC Supplies actually does is separate: we structure a commercial installment contract that reports as a business installment tradeline, so your credit-building strategy doesn't have to wait on rate cycles you don't control.
Sources: 1. Federal Reserve Bank of St. Louis — Discount Window Primary Credit Rate 2. Federal Reserve Bank of St. Louis — Bank Prime Loan Rate
See our Press Founder Questions Editorial Standards for how we research, source, and correct the information on this page.
