US 30-year mortgage rates have climbed to 7.45% as Treasury yields surge and markets reassess the Federal Reserve's policy path, raising fresh concerns about inflation costs for households. Financial commentary outlet The Kobeissi Letter reported that the average rate jumped 17 basis points, leaving borrowing costs 150 basis points above levels recorded six months ago.

The current rate is the highest since November 2023, when inflation remained elevated, and it marks a sharp reversal from the lower-rate environment that followed pandemic stimulus. For prospective homebuyers, the move underscores how quickly monthly borrowing costs have escalated over the past six months. Because 30-year mortgage rates are typically priced off long-term Treasury yields, shifts in the bond market feed directly into home loan pricing.

Why US Mortgage Rates Are Rising

The latest move follows a sharp repricing across the bond market. The 10-year Treasury yield has gained 30 basis points over two sessions, with yesterday marking its largest daily increase since April 9, 2025.

According to The Kobeissi Letter on X, inflation is driving much of the pressure in the bond market. Brent crude has moved above $105 per barrel, while diesel prices have reached record levels.

It's official. 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 Kobeissi Letter (@KobeissiLetter) September 24, 2026

Energy costs are adding to the pressure. Global diesel consumption rises by about 2 million barrels per day during peak demand season, and truckers are now paying than 100% more for fuel than they were nine months ago.

US consumers, meanwhile, expect inflation to reach about 4.6% over the next year. The Kobeissi Letter said that reading ranks among the three highest recorded during the past 12 months, with energy prices serving as a key driver. Higher inflation expectations can pressure bond yields as investors demand greater compensation for holding fixed-income assets, and rising Treasury yields can then feed into borrowing costs across the broader economy.

Mortgage Rates Reflect Shifting Federal Reserve Expectations

The bond market has also repriced as expectations around Federal Reserve policy have shifted. Eight days ago, the Fed delivered its first unanimous rate decision since May 2025. The central bank raised rates and stated that it would deliver price stability, a message The Kobeissi Letter described as a stronger signal about its 2% inflation target.

Markets are now pricing 100 basis points of rate hikes by next summer. That expectation has pushed interest rates higher across multiple parts of the financial system, with broad implications for everything from mortgages to corporate borrowing. Mortgage pricing responds to the whole expected path of policy rates over the life of a 30-year loan, which is why shifting Fed expectations can move home borrowing costs even between official rate decisions.

The Treasury also attempted to intervene, but The Kobeissi Letter said the move produced only a limited market reaction. The bond market is therefore reflecting stronger expectations for future rates.

The report also linked the bond market pressure to US deficit spending and rising debt issuance, with its argument resting on supply and demand dynamics in the Treasury market. More debt issuance can increase the supply of bonds available to investors. If demand fails to absorb that supply, bond prices can fall while yields rise.

For crypto traders and investors, higher rates can tighten financial conditions across risk assets. The mortgage market illustrates how quickly higher yields can reach households and credit markets.

The report expects inflation above 3% to persist into mid-2027. It also says the dollar has lost 40% of its purchasing power over the past ten years. Together, the data points describe tightening financial conditions driven by inflation, energy prices and heavier Treasury issuance. The same forces — energy costs, consumer inflation expectations, the pace of Treasury issuance and the Fed's follow-through on its price-stability message — remain the inputs to watch as markets continue pricing the path ahead.

This article is based on reporting from Blockonomi.