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MARKETS
13 May 2025

Weekly Municipal Monitor—Threats to Tax Exemption

By Sam Weitzman

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Macros, Markets and Munis

Municipals posted positive returns last week as Treasury yields moved 4-8 basis points higher across the curve. Munis outperformed on stronger supply and demand technicals amid lower supply and continued inflows. During a week of quiet economic data, the focus remained on the Trump administration’s trade policies, with Treasury yields moving higher on headlines of the US and China meeting to discuss a trade deal. Meanwhile, the Federal Reserve kept rates unchanged, as largely expected, with markets continuing to price in three cuts for the remainder of the year. Given the headlines about federal funding cuts and the possible elimination of higher education’s tax-exempt status, this week we look at emerging risks in the muni sector.

Technicals Improved as Inflows Continued for a Second Consecutive Week

Fund Flows (up $1.6 billion): During the week ending May 7, weekly reporting municipal mutual funds recorded $1.1 billion of net inflows, according to Lipper. Long-term funds recorded $597 million of inflows, intermediate funds recorded $96 million of inflows and high-yield funds recorded $348 million of inflows. Last week’s inflows led year-to-date (YTD) inflows higher to $4 billion.

Supply (YTD supply of $188 billion; up 28% YoY): The muni market recorded $12 billion of new-issue supply last week, down 22% from the prior week but still well above historical averages. YTD, the muni market has recorded $188 billion of new issuance, up 28% year-over-year (YoY). Tax-exempt and taxable issuance are up 27% and 42%, respectively, though tax-exempt issuance has comprised the vast majority (93%) of YTD supply. This week’s calendar is expected to jump to $15 billion. The largest deals include $1 billion New York State Dormitory Authority (School District Bonds) and $840 million Harris, Texas Hospital District transactions.

This Week in Munis: Taking Tax-Exemption

Discussion of federal funding cuts are gaining momentum and the Trump administration’s criticism of top higher education institutions have drawn renewed risks to the sector. This year, we have seen significant federal funding and grant reductions to major universities, and President Trump indicated that he would revoke Harvard’s tax-exempt status following a previous announcement that the administration would freeze $2.2 billion in grants and contracts to the university. The scope of these federal funding concerns extends beyond Harvard, as major funding reductions have also impacted Columbia, Cornell, Princeton and Northwestern.

The credit impact on these top schools in the headlines, which have strong demand profiles and robust endowments, is likely limited. Many of the institutions already issue significant levels of taxable debt. However, the loss of tax exemption would likely result in higher costs for smaller schools with narrower operating profiles and greater reliance on federal funding. In addition to the threat to tax exemption, widespread hazards—including changes to student aid and loan grants, cuts to research funding, a potential endowment tax and a reduction in foreign student demand—are also leading to uncertainty regarding the sector’s credit trajectory.

The ultimate legal authority surrounding the administration’s actions remains in question. However, the market appears to be taking note, and major universities have responded. Higher education issuance is up over 26% YoY and has led all other sectors this month. Columbia announced last week that it would cut nearly 180 faculty members as a result of such funding cuts.

Exhibit 1: Month-to-Date Muni Issuance by Sector
Month-to-Date Muni Issuance by Sector
Source: Western Asset, Bloomberg. As of 09 May 25. Select the image to expand the view.

From a YTD performance standpoint, the higher education sector has underperformed the Bloomberg Municipal Bond Index, but not significantly more than other revenue-backed sectors (Exhibit 2). Given the widespread risks to the sector—ranging from threats to tax exemption, to foreign student demand, to research funding—Western Asset believes that credit selection will be paramount in avoiding issuers with outsized risk to potential negative policy outcomes for the sector.

Exhibit 2: Bloomberg Municipal Index YTD Sector Returns
Bloomberg Municipal Index YTD Sector Returns
Source: Bloomberg. As of 09 May 25. Select the image to expand the view.

Municipal Credit Curves and Relative Value

Exhibit 3: Muni Credit Curves
Muni Credit Curves
Source: Bloomberg, Western Asset. As of 09 May 25. Bloomberg Valuation Service (BVAL) Municipal Credit Indices (AAA, AA, A, BBB, respectively) and US Sovereign Curves. Taxable-Equivalent Muni Credit Curves consider the top marginal effective tax rate of 40.8%. AA Muni is represented by the US General Obligation AA Muni BVAL Yield Curve. The BVAL curve is populated with pricing from uninsured AA General Obligation bonds. A Muni is represented by the US General Obligation A Muni BVAL Yield Curve. The BVAL curve is populated with pricing from uninsured A General Obligation bonds. BBB Muni is represented by the US General Obligation BBB Muni BVAL Yield Curve. The BVAL curve is populated with pricing from uninsured BBB General Obligation bonds. Indices are unmanaged and one cannot directly invest in them. They do not include fees, expenses or sales charges. Past performance is not an indicator or a guarantee of future results. Select the image to expand the view.
Exhibit 4: Taxable-Equivalent Muni Credit Curves
Taxable-Equivalent Muni Credit Curves
Source: Bloomberg, Western Asset. As of 09 May 25. Bloomberg Valuation Service (BVAL) Municipal Credit Indices (AAA, AA, A, BBB, respectively) and US Sovereign Curves. Taxable-Equivalent Muni Credit Curves consider the top marginal effective tax rate of 40.8%. AA Muni is represented by the US General Obligation AA Muni BVAL Yield Curve. The BVAL curve is populated with pricing from uninsured AA General Obligation bonds. A Muni is represented by the US General Obligation A Muni BVAL Yield Curve. The BVAL curve is populated with pricing from uninsured A General Obligation bonds. BBB Muni is represented by the US General Obligation BBB Muni BVAL Yield Curve. The BVAL curve is populated with pricing from uninsured BBB General Obligation bonds. Indices are unmanaged and one cannot directly invest in them. They do not include fees, expenses or sales charges. Past performance is not an indicator or a guarantee of future results. Select the image to expand the view.
Exhibit 5: AAA Munis vs. Treasuries
AAA Munis vs. Treasuries
Source: Muni Yields: Thomson Reuters MMD, Treasury Yields: Bloomberg. As of 09 May 25. Past performance is not a guarantee of future results. It is not possible to invest directly in an index. Select the image to expand the view.
Exhibit 6: Tax-Exempt and Taxable Muni Valuations
Tax-Exempt and Taxable Muni Valuations
Source: Bloomberg, Western Asset. As of 09 May 25. Yield-to-worst (YTW) is the lowest potential yield that can be received on a bond without the issuer actually defaulting. AAA, AA, A, BBB Corporate Indices; After-Tax Yield assumes a top effective tax rate of 40.8%. Taxable Muni Index Corporate comparable used is the Global Corporate Aggregate (ex. BBB) to better align credit quality and duration. Select the image to expand the view.

Western Asset Key Themes for Muni Investors

Theme #1: Municipal taxable-equivalent yields and income opportunities remain near decade-high levels.

Exhibit 7: Muni and Taxable-Equivalent Muni Yield-to-Worst
Muni and Taxable-Equivalent Muni Yield-to-Worst
Source: Bloomberg, Western Asset. As of 09 May 25. Bloomberg Municipal Bond Index yield considering highest marginal tax rate of 40.8%. Indexes are unmanaged and one cannot directly invest in them. They do not include fees, expenses or sales charges. Past performance is not an indicator or a guarantee of future results. Select the image to expand the view.

Theme #2: The muni curve has steepened, offering better value in intermediate and longer maturities.

Exhibit 8: AAA Municipal vs. Treasury Yield Curves
AAA Municipal vs. Treasury Yield Curves
Source: Bloomberg, Western Asset. As of 09 May 25. Bloomberg Valuation Service (BVAL) AAA Muni Curve and US On-/Off-the-Run Sovereign Curve. Indexes are unmanaged and one cannot directly invest in them. They do not include fees, expenses or sales charges. Past performance is not an indicator or a guarantee of future results. Select the image to expand the view.

Theme #3: Munis offer attractive after-tax yield compared to taxable alternatives.

Exhibit 9: Municipal vs. Taxable Fixed-Income Yields by Quality
Municipal vs. Taxable Fixed-Income Yields by Quality
Source: Western Asset, Bloomberg. As 09 May 25. 10- and 30-Year comparison reflects Bloomberg Valuation Service (BVAL) AAA Muni Curve and US On-/Off-the-Run Sovereign Curve. AA Muni reflects the Bloomberg AA Muni Bond Index. A Muni reflects the Bloomberg A Muni Bond Index. BBB Muni reflects the Bloomberg BBB Muni Bond Index. HY Muni reflects the Bloomberg High Yield Muni Bond Index. AA Corp reflects the Bloomberg AA Corporate Bond Index. A Corp reflects the Bloomberg A Corporate Bond Index. BBB Corp reflects the Bloomberg BBB Corporate Bond Index. After-tax yield considers the top marginal tax rate of 40.8%. Indexes are unmanaged and one cannot directly invest in them. They do not include fees, expenses or sales charges. Past performance is not an indicator or a guarantee of future results. Select the image to expand the view.

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