Mark Zandi, Chief Economist at Moody’s Analytics, is growing increASIngly alarmed over America’s fiscal outlook. He warns the United States could sleepwalk into an economic crisis triggered by high‑interest rates and mounting debt without sufficient public vigilance.
“I cannot tell you when the day of reckoning will arrive,” Zandi said on a recent podcast. “But I can tell you all the pre‑conditions for a crisis are forming, and I do not believe markets and the public fully appreciate this risk.”
U.S. Fiscal Pressures Accelerate
Zandi argues it is becoming harder for the United States to resolve its long‑run fiscal challenges in the absence of an external shock. He goes so far as to say a crisis sparked by higher interest rates may ultimately serve as the catalyst forcing Washington into meaningful policy action.
“I think an event of this kind is nearly inevitable,” he stated. “Without a crisis driven by higher rates pushing policymakers, I do not believe America’s political system and public will make the hard changes required to fix our long‑term fiscal problems.”
These warnings emerge amid sharp volatility across U.S. bond markets. Over the past month, long‑dated Treasuries have been sold off, sending the 30‑year Treasury yield above 5.3% at one point, its highest mark since 2007. As of August 25, the yield remained elevated near 5.17%.
Faced with surging long‑term yields, the U.S. Treasury recently announced it would expand its long‑term bond buyback programme, lifting the maximum single‑operation repurchase size from USD 2 billion to USD 4 billion, aiming to improve market liquidity and ease long‑term financing costs.
“Never Seen Anything Like This in 35 Years”
What alarms Zandi is not deterioration in any single indicator, but the simultaneous build‑up of multiple fiscal and market risks.
“In my 35‑year career, I have never witnessed every metric flashing the same warning signal: we are in serious trouble.”
First, U.S. federal debt has expanded relentlessly, recently crossing the historic threshold of USD 40 trillion. Treasury Department data shows total U.S. public debt stood at roughly USD 40.05 trillion as of August 18, of which publicly‑held Treasury securities amounted to around USD 32.27 trillion.
Zandi also points out that America’s debt‑to‑GDP ratio sits at historically elevated levels, while the annual federal fiscal deficit remains close to USD 2 trillion.
“Just look at our deficit; the gap between government revenues and outlays is enormous right now.”
Higher interest rates compound these difficulties. Rising Treasury yields lift not only future new‑issue borrowing costs but also the refinancing expense for the vast stock of outstanding government debt.
Zandi believes the United States is trapped inside a dangerous feedback loop: larger fiscal deficits require greater Treasury issuance; heavier bond supply together with fading investor risk appetite can push long‑term interest rates even higher, in turn making fiscal burdens heavier still.
“We are issuing huge volumes of debt and our fiscal position is worsening,” he said. “Combine that with growing global scepticism toward U.S. investment conditions, and you have the recipe for sharply higher long‑term interest rates.”
Debt Tops USD 40 Trillion
The crossing of the USD 40‑trillion debt mark refocuses market attention on Washington’s long‑unaddressed structural fiscal shortcomings.
Data shows U.S. federal debt has more than doubled in less than a decade. When Donald Trump first took office in 2017, federal debt stood at approximately USD 19.95 trillion; today it exceeds USD 40 trillion.
A large debt stock alone does not guarantee an immediate crisis, yet risks become far more intractable under a high‑rate environment.
30‑year Treasury yields influence not only federal long‑term funding costs but also spill over into mortgage rates, corporate borrowing and consumer credit. PeRSIstent yields near or above 5% lift capital costs across the entire U.S. economy.
That, for Zandi, is what distinguishes the present moment: high debt, large deficits and elevated interest rates are occurring simultaneously, while global investor confidence in U.S. assets and fiscal policy faces fresh tests.
Druckenmiller Slams Treasury Bond Buybacks
Meanwhile, the Treasury’s expanded bond‑repurchase initiative has drawn public criticism from a heavy‑weight Wall Street investor.
Billionaire and legendary hedge‑fund manager Stanley Druckenmiller has openly criticised Treasury Secretary Scott Bessent. Druckenmiller worked alongside Bessent within George Soros’s fund during the 1990s and was an important mentor early in Bessent’s career.
In his view, the Treasury’s enlarged long‑bond buybacks go beyond conventional liquidity management and amount to active intervention aimed at suppressing long‑term interest rates.
Druckenmiller argues it is a “mistake” for the government to artificially depress yields via repurchases. The real problem to resolve is bond prices are not the problem; the real issue is the widening fiscal deficit.
He warns any government attempt to prop up asset prices against fundamental forces will ultimately fail; the only open question is how high the eventual cost will be.
In his reading, rising long‑term Treasury yields send Washington an unambiguous message: investors demand greater risk compensation, and U.S. fiscal credibility must be restored.
Zandi’s anxieties and Druckenmiller’s warnings converge on one core point: America’s true risk is not merely the headline USD 40‑trillion‑debt figure, but rising long‑term funding costs coinciding with ongoing debt growth.
Should Treasury yields stay elevated for an extended period, interest‑service expenses will balloon further. To roll over and repay obligations, the government will then need to issue still more bonds. Zandi fears that once market confidence erodes materially, this feedback loop could evolve into a fiscal crisis forcing Washington to act.