July’s performance in the US municipal bond market is shaping up to be the worst since 2003. Despite the $4 trillion market’s usual resilience during this month, rising Treasury yields coupled with a flood of new bond issuance from states and cities have created a perfect storm, pushing prices down and yields higher.

Yields Climb as Supply Overwhelms Demand

The Bloomberg Municipal Bond Index ended June with a modest gain of 0.96%, and the second quarter closed up 2.5%, pointing to a stable start for 2026. However, Treasury yields have surged in July, forcing muni bond yields upward to remain competitive. This dynamic drives down the prices of existing bonds, creating pressure on investors holding older issues. At the same time, many state and local governments rushed to issue new bonds, eager to lock in financing ahead of expected rate hikes. The resulting supply glut has overwhelmed investor appetite, contributing to the sharp price declines.

The broader fiscal environment amplifies these pressures. Federal government debt has surpassed $39 trillion, pushing risk-free rates higher and influencing all fixed income markets, including munis. With the federal government issuing massive amounts of Treasury bonds, municipal yields must adjust accordingly to attract buyers.

Crypto-Backed Bonds Hit a Roadblock

Amid this turmoil, a notable experiment stalled. New Hampshire’s Business Finance Authority proposed a $100 million Bitcoin-backed municipal bond, passing initial approvals late last year. However, skepticism about Bitcoin’s extreme price swings prevented final approval. On July 9, a narrow 3-2 vote rejected the bond, highlighting concerns about the volatility of collateral backing. Bitcoin’s dramatic rise above $126,000 in October 2025 followed by a sharp pullback made such a bond too risky for many investors.

This episode shows the challenges of integrating volatile crypto assets into traditional municipal finance. While innovative, crypto bonds remain on shaky ground, especially when broader market conditions are uncertain.

This content is for informational purposes only and should not be considered financial advice.