More Yield as March wave of new supply hits MuniLand



For municipal bond investors, March’s 1.69% monthly drop might feel like a punch in the gut. Sellers aren’t faring much better—rate volatility dragged on all month, turning hedging into a guessing game rather than a skill, leaving them just as irritated. Still, March’s shake-up has pushed current ratios to levels that scream bargain across the #MuniBond market, making it worth a closer peek.

March 2025’s muni returns now rank alongside March 2022 and March 2020 as the three ugliest monthly losses in two decades. Remember March 2020 was the Covid Shutdown month which featured panicked selling. 

More Supply:

New bond issuance has spiked—up 20% year-over-year this month, according to Bloomberg’s numbers—while fewer bonds have matured or paid interest, thus leaving investors short on cash to reinvest.

In March 2025, Bank of America/Merrill Lynch has already their 2025 issuance projection to $580 from $520 billion.

Record Issuance Year 2024 - $508 billion per Bond Buyer

Previous Record Year 2016 - $445 billion

Previous Record Year 2010 - $433 billion (BABs program peaked)

Less Demand:

$573 million flowed out of muni-bond funds in the week ending Wednesday March 26, 2025, marking three straight weeks of withdrawals, per LSEG Lipper data. Some of the selling pressure can be attributed to investors selling their MuniBonds to pay their April 15th tax bill. 

 
20 year plus maturities see the strongest relative value to US Treasury Market
above 80% M/T is considered relatively cheap for earners in the highest income tax brackets 
 
Muni-to-Treasury Ratios Across the Curve:
 
  • 2-Year: ~60-65%
    • Short-end ratios tend to be lower due to strong demand for tax-exempt income and flatter yield curves. For example, if the 2-year Treasury yields 4.3%, a AAA muni might yield 2.6%-2.8%.
  • 5-Year: ~65-70%
    • Mid-range maturities see slightly higher ratios as the curve steepens a bit. A 5-year Treasury at 4.2% might pair with a muni yield of 2.7%-2.9%.
  • 10-Year: ~70-75%
    • The 10-year is a key benchmark. Recent reports suggest AAA munis yield around 2.8%-3.0% against a Treasury yield of 4.0%-4.2%, giving a ratio in this range.
  • 20-Year: ~80-85%
    • Longer maturities show higher ratios as credit and liquidity risks grow. A 20-year Treasury at 4.4% might see a muni yield of 3.5%-3.7%.
  • 30-Year: ~85-90%
    • At the long end, ratios approach or exceed historical averages (80-90%). A 30-year Treasury yielding 4.5% could align with a muni yield of 3.8%-4.0%.
 
Why It Matters:
A ratio below 100% reflects munis’ tax-exempt advantage—lower yields still beat Treasuries after-tax for high-bracket investors. Ratios above 80% (especially at the long end) signal munis are relatively cheap compared to Treasuries, potentially offering value if you’re in a high tax bracket. For example, a 30-year ratio of 90% with a 4.0% muni yield equates to a taxable-equivalent yield of about 6.3% at a 37% federal tax rate, outpacing the 4.5% Treasury.
 
#MuniBond #MuniBonds #MunicipalBonds #Munis #TBillandChill #TBillnChill #WatkinsonMuniBonds #WatkinsonMunicpalBonds #MunicipalBondSMA #GetRealStayRich #TaxEquivalentYield #TEY

 


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