The U.S. bond market is experiencing one of its most turbulent periods in years, with Treasury yields surging, borrowing costs climbing and investors confronting a renewed inflation problem.
The Kobeissi Letter described the move as a bond market “meltdown,” pointing to a roughly 30-basis-point rise in the 10-year Treasury yield in just two days. It also reported that the average U.S. 30-year mortgage rate had reached 7.45%, up roughly 150 basis points over six months and its highest level since 2023.
Behind the turmoil is a combination of persistent inflation concerns, expensive energy, changing Federal Reserve expectations and longer-term worries about the enormous amount of government debt that needs to be financed.
For Bitcoin and the wider crypto market, this matters considerably. Rising Treasury yields can drain demand from speculative assets, make leverage more expensive and change how investors think about risk.
What you'll learn 👉
Why the Bond Market Is Under So Much Pressure
Inflation has returned to the center of the bond-market story.
The Kobeissi Letter points to Brent crude trading above $105 per barrel and record-high diesel prices as important sources of renewed inflation concern. Its argument is that rising energy and transportation costs could work their way through the economy, making it more difficult for inflation to return toward the Federal Reserve’s 2% target.
The Federal Reserve has already responded to the inflation problem. On September 16, the FOMC unanimously raised its target range by 25 basis points to 3.75%-4.00%. The Fed explicitly said inflation remains elevated and that the move was intended to support a return toward its 2% goal.
That was the first Fed rate increase since 2023.
The Fed’s own September projections also changed considerably. The median projection for the federal funds rate at the end of 2026 rose to 4.1%, compared with 3.8% in the June projections. For 2027, the median moved to 4.1% from 3.6%. Those projections are not promises of future policy, but they show how policymakers’ assessment of appropriate rates has changed.
This helps explain why the bond market is repricing so aggressively.
If investors expect inflation to remain elevated and monetary policy to stay restrictive, they generally demand higher yields for holding longer-duration government debt. Since bond prices and yields move inversely, falling Treasury prices mean rising yields.
It's official.
— The Kobeissi Letter (@KobeissiLetter) September 24, 2026
As the bond market "meltdown" accelerates, the average interest rate on a 30Y mortgage in the US is up to 7.45%.
That's up +150 basis points in 6 months and the highest since 2023, when inflation was at 6.4%+.
What is happening? Let us explain.
(a thread) pic.twitter.com/xAWnxSbifp
The Problem Goes Beyond the Federal Reserve
Kobeissi also points to the U.S. fiscal position as a longer-term part of the equation.
The argument is straightforward: large government deficits require substantial Treasury issuance. More bonds entering the market means investors must absorb additional supply. If demand does not increase enough to match that supply at existing prices, yields may need to rise to attract buyers.
However, it would be too simplistic to attribute the current move entirely to deficit spending. Treasury yields respond to numerous forces simultaneously, including expected inflation, economic growth, Federal Reserve policy, global demand for U.S. debt, risk sentiment and expectations about future government borrowing.
The immediate catalyst appears more closely connected to inflation and changing expectations around monetary policy, while fiscal concerns form part of the broader backdrop.
Why Rising Bond Yields Are a Problem for Bitcoin and Crypto
This is where the bond-market story connects directly with Bitcoin.
When Treasury yields rise substantially, investors suddenly have a much more attractive low-risk alternative to speculative assets.
A 10-year Treasury yielding around 5% competes for capital very differently from one yielding 2%. Investors can earn a meaningful return from government debt without accepting Bitcoin’s volatility.
That increases the opportunity cost of holding assets that produce no cash flow or yield of their own.
Higher yields can also tighten financial conditions across the economy. Mortgage rates rise, corporate borrowing becomes more expensive, leveraged trades cost more to maintain and liquidity becomes less abundant.
Crypto tends to be particularly sensitive to this environment because much of the market sits toward the higher-risk end of the investment spectrum.
Bitcoin can therefore face selling pressure when yields surge rapidly, while altcoins can experience even larger moves because they generally have thinner liquidity and more speculative positioning.
There is another important channel: the dollar. Higher U.S. yields can support demand for dollar-denominated assets and strengthen the dollar under some conditions. A stronger dollar has historically created another potential obstacle for dollar-priced risk assets, including crypto.
None of this means a rising 10-year yield mechanically forces Bitcoin lower. The speed of the move, why yields are rising, liquidity conditions and the broader economic environment all matter.
Read also: Bitcoin Price News: Don’t Expect a 30% BTC Pullback Just Yet, Analyst Says
Could a Bond Crisis Eventually Become Bullish for Bitcoin?
This is where the story becomes more complicated.
A disorderly rise in yields can be bearish for Bitcoin initially because it tightens financial conditions. But a sufficiently severe bond-market disruption could eventually produce a very different policy response.
If rising yields began threatening financial stability, damaging Treasury-market functioning or creating severe stress elsewhere in the financial system, investors would start watching for potential intervention from policymakers.
That could involve changes in liquidity operations or other measures aimed at preserving orderly market functioning. It would not necessarily mean immediate rate cuts or large-scale quantitative easing, and those outcomes should not be assumed.
Bitcoin’s reaction would therefore depend heavily on what happens next.
There is also a longer-term argument used by Bitcoin investors: persistent inflation, fiscal deficits and declining purchasing power can increase demand for scarce assets. Under that thesis, Bitcoin’s fixed maximum supply of 21 million coins makes it attractive as an alternative monetary asset.
But that thesis can coexist with painful short-term declines. Bitcoin may benefit over longer periods from concerns about currency debasement while simultaneously falling when yields surge and financial conditions tighten.
That distinction is crucial.
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