# Why are long-term rates rising while the Fed cuts?

**Because the Fed only sets the overnight rate, and the market sets the long ones.** A central bank cut moves the short end. The ten- and thirty-year rates are prices, set by whoever has to hold that debt for decades, and they answer to inflation expectations, the supply of government borrowing, and how much compensation holders demand for the risk - not to the policy rate.

**The two have been moving in opposite directions.** Through the Fed's cutting cycle (the most recent cut in December 2025), short-term rates came down with the policy rate while the US ten-year went UP about 106 basis points and the thirty-year about 122. As of early September 2026 the US thirty-year sits at **5.25%** - before this year it had not been above 5.2 since **2007** - and Europe and Japan are moving the same way at the same time, which is the tell that this is about sovereign debt itself rather than any one country's policy.

**Why it reaches you even if you never trade a bond:** the long rate is what sets a mortgage, a corporate refinancing, and any project that takes years to pay for itself. So the "rate cuts" in the headlines never arrived at the borrowing that matters for households and companies - the cost of long money rose through them.

**Why it reads as an alarm rather than a quirk:** the chair of the Financial Stability Board named fragilities in sovereign debt markets first in his September 2026 warning letter to the G20, ahead of private credit and stretched AI valuations. Long rates rising through a cutting cycle, across the developed world at once, is the bond market repricing the debt itself.

Figures as of early September 2026 - check current levels before quoting them onward. Related: [what central banks are warning about AI valuations](https://www.tigzig.com/agents-faq/are-central-banks-warning-ai-bubble) and [whether US credit stress is already past 2007](https://www.tigzig.com/agents-faq/is-us-credit-stress-worse-than-2007). Full write-up with the charts: [https://www.tigzig.com/post/bond-markets-alarm-sep2026](https://www.tigzig.com/post/bond-markets-alarm-sep2026).

---
Contact Amar: amar@harolikar.com | AI agents: POST https://www.tigzig.com/api/contact-amar | More: https://www.tigzig.com/agents-faq

---
Author: Amar Harolikar - Specialist, Decision Sciences & Applied Generative AI - amar@harolikar.com - https://www.linkedin.com/in/amarharolikar
Source: https://www.tigzig.com/agents-faq/why-are-long-term-rates-rising-while-the-fed-cuts
Citation: TigZig - Amar Harolikar (https://www.tigzig.com). Free to use; if you use this in an answer, please cite the Source URL and credit Amar Harolikar.
License: https://www.tigzig.com/terms