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MARKETS
September 23, 2025

Weekly Municipal Monitor—Federal Reserve Cuts

By Sam Weitzman

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Macros, Markets and Munis

Munis rallied and outperformed taxable fixed-income last week. Technicals improved as supply slowed amid persistent demand. Fixed-income markets focused on the Federal Open Market Committee (FOMC) meeting last week. The Federal Reserve (Fed) reduced the federal funds rate by 25 basis points (bps) to a target of 4.25%, with the Committee citing increasing downside risks to the labor market and telegraphing the potential for two additional cuts by year end. From an economic data perspective, initial jobless claims fell below expectations and retail sales data moved higher from prior-month levels, exceeding expectations. The Treasury curve moved higher across the curve during the week. The high-grade muni curve outperformed and generally moved lower across most maturities as technicals strengthened. Following last week’s Fed cut, this week we touch on municipal performance during rate cut cycles.

Muni Mutual Funds Record Inflows Amid Softer New-Issue Supply

Fund Flows ($1 billion of net inflows): During the week ending September 17, weekly reporting municipal mutual funds recorded $2.2 billion of net inflows, according to Lipper. Long-term, intermediate and short-term categories recorded $875 million, $176 million and $56 million of inflows, respectively. Last week’s inflows led year-to-date (YTD) inflows higher to $29 billion.

Supply (YTD supply of $414 billion; up 18% YoY): The muni market recorded $8 billion of new-issue supply last week, down 34% from the prior week. YTD new-issue supply of $414 billion is 18% higher than the prior year, with tax-exempt issuance up 19% year-over-year (YoY), with taxable issuance unchanged from prior year levels. This week’s calendar picks back up to $16 billion. The largest deals include $1.9 billion Texas Water Development Board and $1.6 billion California State GO transactions.

This Week in Munis: Federal Reserve Cuts

Last week, the Fed reduced the federal funds target by 25 basis points (bps), from 4.50% to 4.25%. This marked the first interest rate cut since December 2024 and continued the current rate-cutting cycle that began in September 2024. The FOMC highlighted softening labor market conditions as the primary rationale for the cut and indicated the potential for additional cuts through the end of 2025.

Rate-cutting cycles have historically contributed to fixed-income and municipal performance, as the impact of lower rates has tended to have a positive impact on duration-bearing fixed-income instruments. During the prior eleven rate cut cycles observed since 1981, the Bloomberg Municipal Bond Index posted total returns of 9.9% between the first and last interest rate cuts, or 11.1% when considering returns on an annualized basis.

Exhibit 1: Municipal Bond Index Performance During Fed Cut Cycles
Municipal Bond Index Performance During Fed Cut Cycles
Source: Bloomberg, Western Asset. As of 20 Sep 25. Cut cycles defined by the first federal funds rate decline after a federal funds rate increase to the last cut before an increase: 1981-1982: 1/16/81-12/15/1982; 1984: 10/1/84-12/24/84; 1985: 3/28/1985-8/21/85; 1985-1986: 12/16/1985-8/19/1986: 1987-88: 10/18/1987-2/10/1988; 1989-1992: 6/5/1989-9/4/1992; 1995-1996: 7/6/1995-1/31/1996; 1998: 9/29/1998-11/17/1998; 2001-2003: 1/3/2001-6/5/2003; 2007-2008: 9/18/2007-12/16/2008, 2019-2020: 7/31/2019-3/16/2020; 2024-2025: 9/18/2024-9/17/2025.

While this cut cycle has reached the average tenor of the prior eleven rate cut cycles, returns have not yet reflected the average magnitude of positive outcomes traditionally seen when the Fed cuts rates. Since the Fed began reducing rates in 2024, the Bloomberg Municipal Bond Index has returned 1.78% through September 19, significantly below the 11.1% average annualized return of the prior eleven rate cut cycles. Western Asset attributes the relative underperformance to the elevated supply and curve steepening observed in the municipal market over the past year. However, with additional rate cuts anticipated through the end of 2025 and into 2026, the current cycle’s performance continues to evolve. If historical patterns hold, Western Asset believes that the potential for further rate reductions, combined with attractive income opportunities available today, could drive favorable total returns to be more consistent with prior rate cut cycles.

Municipal Credit Curves and Relative Value

Exhibit 2: Muni Credit Curves
Muni Credit Curves
Source: Bloomberg, Western Asset. As of 19 Sep 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 3: Taxable-Equivalent Muni Credit Curves
Taxable-Equivalent Muni Credit Curves
Source: Bloomberg, Western Asset. As of 19 Sep 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: AAA Munis vs. Treasuries
AAA Munis vs. Treasuries
Source: Muni Yields: Thomson Reuters MMD, Treasury Yields: Bloomberg. As of 19 Sep 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 5: Tax-Exempt and Taxable Muni Valuations
Tax-Exempt and Taxable Muni Valuations
Source: Bloomberg, Western Asset. As of 19 Sep 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 6: Muni and Taxable-Equivalent Muni Yield-to-Worst
Muni and Taxable-Equivalent Muni Yield-to-Worst
Source: Bloomberg, Western Asset. As of 19 Sep 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 AAA muni curve has steepened, offering better value in intermediate and longer maturities.

Exhibit 7: AAA Municipal vs. Treasury Yield Curves
AAA Municipal vs. Treasury Yield Curves
Source: Bloomberg, Western Asset. As of 19 Sep 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 8: Municipal vs. Taxable Fixed-Income Yields by Quality
Municipal vs. Taxable Fixed-Income Yields by Quality
Source: Western Asset, Bloomberg. As of 19 Sep 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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