Municipal Bond Yields Hit 5.00% as M/T Ratios Peak in 2026
Tax-exempt yields rose 50 basis points since August, pushing M/T ratios to yearly highs and improving relative value for crossover buyers.
Key points
- Municipal-to-Treasury ratios have reached their highest levels of 2026, signaling improved relative value for investors.
- Long-term tax-exempt yields have risen 50 basis points since mid-August, hovering near 5.00% for investment-grade bonds.
- Municipal funds recorded $40 billion in inflows through September 10, coinciding with over $400 billion in total issuance.
Ten and 30-year municipal bond yields have risen by approximately 50 basis points since mid-August. This increase has placed long-term tax-exempt yields near the 5.00% mark for investment-grade debt.
Municipal-to-Treasury ratios now sit at or above their highest levels recorded so far in 2026. AdvisorHub notes that these improving relative value indicators are becoming a more significant market signal than raw demand.
Relative Value Outpaces Raw Demand
Strong investor inflows drove municipal fund assets up by roughly $40 billion through September 10. This marked the 21st consecutive week of net inflows for the asset class.
Total issuance exceeded $400 billion through August, with nearly $60 billion issued in that single month. The recent selloff has made these yields more attractive compared to taxable government debt.
Macro Risks Shape Current Valuations
Federal debt recently crossed the $40 trillion threshold, adding pressure to interest rate expectations. Markets currently price a near 90% probability of a Federal Reserve rate increase.
Geopolitical tensions involving Iran have pushed oil prices higher, potentially sustaining inflation concerns. These factors have contributed to the broader bond market selloff that benefits municipal yields.
Crossover Buyers See Better Opportunities
Investors do not need to predict the exact bottom of the market to act. The combination of higher income and improved relative value creates a compelling case for participation.
If M/T ratio improvements continue, crossover buyers from taxable markets are likely to increase their activity. This shift could further support prices in the municipal bond sector.
