Kevin Warsh’s 5% Treasury Problem: $100 Oil Is Raising Everyone’s Cost of Money
A 5% US Treasury yield is not a finance-nerd headline. It is the bill arriving for every business, homeowner and investor who pretended cheap money was normal.
The market is begging Kevin Warsh to save it from higher rates. That is precisely why he may need to raise them.
A US 10-year Treasury yield at 4.97%, Brent crude settling at $104.61 a barrel and US inflation running at 3.4% are not three separate headlines. They are one message: money is becoming expensive again, and plenty of businesses have built themselves around the fantasy that it would not.
As of Sunday, September 13, markets are closed after a week in which investors received a sharp reminder of who is boss. It is not the White House, the Fed, or the AI hype machine. It is the bloke buying the next Treasury bond and deciding whether the return is worth the risk.
The 5% line is more than a round number
On Friday, September 11, the 10-year Treasury yield finished at 4.97%, after flirting with 5%. The two-year yield reached 4.62%, reflecting markets pricing a greater chance that the Federal Reserve will raise rates at its meeting this week. The 30-year yield sat at 5.36%.
People love calling this a bond-market tantrum because it sounds temporary and makes everyone feel clever. I think that is too generous. It is a repricing of reality.
The 10-year Treasury is the reference rate beneath a huge slab of the financial system. Mortgage rates, corporate loans, commercial property valuations, infrastructure finance, private-equity deal models and the discount rates used to value growth stocks all feel its pull. When that yield stays high, the cost of being optimistic rises.
And it is not only America. Reuters reported borrowing costs across major markets were at multidecade highs, with investors confronting a nasty mix of elevated oil, inflation risk, central-bank tightening and large government deficits. Australia’s three-year government-bond yield surged to 5.047% on Friday, a 15-year high. Japan’s 10-year yield climbed to 2.97% as investors anticipated further tightening there too.
That matters to Australian operators. We do not live in a financial terrarium. Global capital has alternatives. If US government paper pays near 5%, investors do not need to squint very hard to find reasons to demand more from your startup, your property deal, your private-credit vehicle or your shares.
$100 oil just turned into everybody’s problem
The August US Consumer Price Index rose 0.4% from July and 3.4% over the year. Strip out food and energy, and core prices still rose 0.3% for the month and 2.4% over the year. That is the important bit: this is not simply a petrol-station problem.
Yes, gasoline prices jumped 3.9% in August and accounted for more than a third of the monthly CPI increase. Energy prices rose 2.1%. But shelter costs rose 0.3%, airline fares gained 2.7%, and vehicle prices also moved higher.
Then September made August look quaint. Oil had been around $80 a barrel in mid-August. By Friday, Brent had briefly approached $110 before settling at $104.61, still up 2.8% on the day despite the pullback. US diesel reached a record $6 a gallon. Petrol hit $4.30 a gallon.
Diesel is the figure I would watch if I ran a business moving physical stuff. It is not just a transport cost. It works its way through farms, factories, warehousing, construction, deliveries and every other dull but essential part of the economy. Someone eventually pays. Usually the customer, sometimes the shareholder, and occasionally the business owner who did not bother to protect margin.
The Fed cannot produce another barrel of oil. Raising rates does not reopen a shipping route or end a war. But the Fed’s job is to stop a supply shock becoming an excuse for everyone else to lift prices, demand higher wages, and assume inflation will stay high forever.
That is why Warsh has a rotten decision, not an easy one.
Kevin Warsh is now being tested, not admired
At Jackson Hole on August 28, Warsh was plain enough: if the Fed could not be confident inflation was returning to its 2% objective clearly and fast enough, it had more work to do. He also said price stability is not self-executing. Correct.
That language matters because the market has spent years trying to force central bankers into a comforting script: explain the next move, cushion the downside, and please do not upset asset prices. Warsh has avoided giving investors a mechanical roadmap. Annoying? Maybe. Sensible? Also maybe.
The trouble is that credibility is built when saying the unpopular thing costs you something.
President Donald Trump has pushed for lower rates. A rate rise would put Warsh directly at odds with that preference, while also putting more strain on borrowers. But if inflation is sticky, oil is over $100, and long-term yields are nearly 5%, holding simply because the decision is uncomfortable does not preserve credibility. It spends it.
Markets were pricing a 72% chance of a hike before Friday’s inflation data. The hotter underlying details made the coming meeting even more consequential. A hike would not be a declaration that the Fed has solved inflation. It would be the Fed showing it understands the risk of letting another energy shock seep into everything else.
The overlooked problem is not rates. It is leverage.
Here is the contrarian view: 5% Treasuries are not inherently bad news. They are bad news for businesses and portfolios that only worked because capital was absurdly cheap.
For savers, a higher risk-free return is not an apocalypse. It is a choice. For disciplined investors with cash, higher yields can eventually create better entry points in bonds, property and equities. For operators who generate real cash, have pricing power and do not need to refinance every six months, the field gets less crowded.
The real pain lands on the flimsy middle: businesses with high fixed costs, vague unit economics, fragile pricing and debt that was raised under a very different interest-rate regime.
This is also where the AI boom gets interesting. AI may be transformative. I am not arguing otherwise. But plenty of AI infrastructure spending is capital intensive, and capital-intensive booms are not immune to the price of money. If the long end stays high, investors will start separating companies with cash flow from companies with magnificent slides and heroic funding requirements. About bloody time.
The same goes for government. Investors are not just fretting about inflation; they are demanding more compensation for lending to governments with large borrowing needs. The US Treasury’s latest buyback purchased $5.2 billion of bonds, below its $6 billion cap and against $10.5 billion offered. That did not soothe the market. You cannot conduct your way out of a confidence problem forever.
What this means for you
Do not make your next operating decision based on the hope that rates quickly return to the old normal. That is not a strategy. It is wishful thinking dressed as a forecast.
First, calculate your exposure. List every loan, lease, revolving facility and refinancing date. Do not delegate the understanding of your debt to the finance team and glance at a summary once a quarter. Know exactly what a 1% increase in borrowing costs does to monthly cash flow.
Second, stress-test pricing. If fuel, freight, rent or debt costs rise again, where does the money come from? If the answer is “we will absorb it,” make sure that is a deliberate choice with a deadline, not a habit that quietly murders margin.
Third, hold more liquidity than feels fashionable. Cash is not laziness when the risk-free rate is near 5%. It is optionality. Optionality lets you negotiate harder, buy assets from forced sellers, hire good people when competitors are cutting, and avoid raising capital when the market knows you are desperate.
Fourth, if you are investing, stop treating every dip as a bargain. Higher yields mean the hurdle rate has changed. Demand a better return, a stronger balance sheet and an actual path to cash generation. A great business can still be a terrible investment if you pay a stupid price for it.
And finally, remember this: inflation is not an abstract chart in Washington. It is the rate at which sloppy decisions become expensive. The operators who win this next stretch will not be the loudest. They will be the ones with cash, discipline, pricing power and the nerve to face the numbers before the numbers face them.