Market Data

Prime at 6.75% Is Quietly Taxing Factory Capex, Here's the Bill

How the prime-linked cost of floating-rate debt flows straight into machinery budgets, inventory carrying costs, and the hurdle rate every new-order decision must clear.

At a prime rate of 6.75% as of Jul 10, 2026, per Federal Reserve data via FRED, carrying $10 million of floating-rate factory debt costs about $675,000 a year before margin, and prime remains 3.50 percentage points above the 3.25% level that prevailed from 2020 into early 2022. That gap is not a headline number; it is a standing charge against every machinery budget, inventory position, and expansion plan financed at floating rates.

The hurdle rate did the quiet damage

The visible cost of prime is the interest line. The larger cost is usually invisible: the hurdle rate. When debt priced off a 3.25% prime, a project returning 12% cleared the bar with room to spare. With prime at 6.75% and typical margins on top, the weighted cost of capital at many mid-size manufacturers has shifted enough that the same 12% project is now marginal. Projects do not get rejected loudly in this regime, they get deferred, resized, and studied to death. That is how a rate level taxes capex: not by making loans unavailable, but by silently reordering which projects are worth doing at all.

Inventory and new orders feel it too

The same benchmark prices working capital. Every dollar of inventory financed on a prime-linked revolver carries roughly 6.75% plus margin as its annual toll, which is why elevated rates and elevated inventories-to-sales ratios make an expensive combination. And the effect compounds across the customer base: the buyers of your machines and components face the same financing math on their side, which feeds back into new orders. When the cost of money is a standing charge on both sides of the transaction, throughput and turns become financial levers, not just operational ones.

Bank prime loan rate, Jul 10, 2026: 6.75%. Has held at 6.75% throughout the archived window, since Jun 10, 2026.

Projects do not get rejected loudly in this regime. They get deferred, resized, and studied to death.

The bill, itemized: today versus the 3.25% era

Run the comparison on a $10,000,000 floating-rate book, before margin. At the 3.25% prime that held through the cheap-money years, interest ran about $325,000 a year. At today's 6.75%, it runs about $675,000, a difference of roughly $350,000 every year, money that used to be margin and now belongs to the bank. That figure is the honest denominator for any efficiency project on the table: automation, turns improvement, or debt paydown that frees $350,000 annually deserves the same board attention as a new product line that promises the same.

Put your project's numbers and today's financing cost through the capex ROI calculator to see what still clears. Re-run the hurdle

Published 2026-07-13.