Costly Oil Is Raising the Price of Business Credit, Not Just Fuel

Expensive oil is raising more than fuel bills for businesses. By feeding inflation, it has helped push the Federal Reserve into its first rate increase since 2023 and lifted the Treasury yields that anchor longer-term business loans. The effect on borrowers is visible, though the sources reviewed also show it has not yet pushed small-business loan rates far above normal.

Oil, inflation and the Fed

Brent crude has swung between $97 and $112 a barrel in October, Transport Topics reported on 21 October, when it traded around $108. The price has been elevated since the war with Iran began in late February and disrupted shipping through the Strait of Hormuz. Accounts of current flows differ: US Secretary of State Marco Rubio said shipments were approaching prewar levels, while one analyst put them about 43% below on 15 October.

Inflation has followed. August consumer prices rose 3.4% from a year earlier, according to a 24/7 Wall St. report. The Fed held its policy rate at 3.50% to 3.75% on 29 July in a 9–3 vote, with three members favouring a rise.

On 16 September, the Fed voted 12–0 to raise the range by a quarter point to 3.75% to 4.00%, its first increase since July 2023, according to Trading Economics and other reports of the decision. Chair Kevin Warsh cited a strong labour market, persistent inflation and the energy shock from the Iran war, one summary reported. Minutes released on 7 October showed most policymakers thought another increase would likely be appropriate by year-end, though they said decisions would depend on incoming data.

What markets have done

Longer-term borrowing costs have risen faster than the policy rate. The 10-year Treasury yield stood at 5.09% on 21 October, against 3.97% before the war, Transport Topics reported. After the July meeting, the 30-year yield rose to nearly 5.24%, its highest since 2007, according to the Northeast Times.

That matters for companies because longer-term loans, including most equipment financing and commercial mortgages, track Treasury yields, according to a small-business finance guide from Under30CEO. Fixed-rate loans already in place do not change.

What small businesses are paying

The clearest direct evidence comes from the National Federation of Independent Business (NFIB). Its September survey, released on 13 October, found the average rate on short-term loans rose to 8.2% from 7.5% in August. A net 8% of regular borrowers said they paid a higher rate on their latest loan, the highest share since June 2025.

Context matters, though. The 8.2% rate is close to the survey's historical average of 8.3%. The rate had fallen to 7.4% in the June reading, the lowest since October 2022, according to XTB. The recent increase therefore reverses a dip rather than signalling a crisis.

Cost concerns are rising. In September, 20% of owners named inflation as their single most important problem, up 4 points, against a historical average of 7%. The optimism index slipped 0.8 points to 97.9, a tenth of a point below its 52-year average. The American Bankers Association commented that slower expansion plans could weigh on demand for small-business credit, while sustained inflation and labour costs could pressure margins and debt-service capacity.

Operating costs add to the strain

Higher energy costs also feed through to operating budgets. In the National Association of Manufacturers' second-quarter survey, 72.0% of respondents reported rising energy input costs because of the conflict. In its third-quarter survey, 77.3% cited freight rates and 74.1% cited fuel costs as challenges, and respondents expected raw material and other input costs to rise 5.0% over the next year.

What is not established

The Fed attributed its September decision to several factors, so no source reviewed isolates how much of the rate increase is due to oil. Data on credit availability are thinner than data on credit cost, and the sources reviewed do not show a broad tightening of lending standards. Oil price quotes also vary between sources and dates, and some figures come from secondary summaries. This article is information, not financial advice.

What to watch next

The Fed meets again at the end of October. TD Economics and other analysts said markets expected it to hold rates, and Warsh declined to signal the outcome, according to Trading Economics. Further inflation reports will help determine whether the year-end increase that most policymakers anticipated goes ahead.

On oil, the US Energy Information Administration expects Brent near $105 in the fourth quarter and about $84 in 2027, assuming shipping recovers, according to a secondary summary of its forecast. Developments in the Strait of Hormuz and US-Iran talks could move that quickly. NFIB's October survey, due in November, will show whether small-business borrowing costs keep rising.