Capital Ideas^™ 
Investment insights from Capital Group

As investors recalibrate opportunities and risks in bond markets following the year-end rally, one area that merits a closer look is high income municipal bonds. 

The category combines the tax savings of a typical muni offering (typically municipal bonds are exempt from certain state and local taxes) with higher income relative to investment-grade core bonds. Not to be confused with a pure high-yield offering, the sector is a blend of opportunities across the investment–grade (rated BBB and above), high yield and unrated muni spaces.

High income munis are a longer duration asset class compared with other income-focused sectors, such as high-yield corporates. We believe this duration exposure could lead to relatively higher price appreciation from falling rates. 

Spreads narrowed broadly across the bond market during the year-end rally. Valuations appear to be pricing in a benign economic outcome, leaving little room to cushion investors against spread widening in the event of negative economic surprises. In this environment, our team’s efforts have been focused on where we believe we can add the most value as active managers, and that is primarily through credit selection and yield curve positioning.

We highlight areas where we’re finding value and where we remain more cautious.

1. Long duration profile of the asset class is attractive   

The high-income muni market isn’t just about muni issuers’ creditworthiness. The category has a relatively long duration profile, with an effective duration of 7.1 years for a custom blend high income muni index compared with 6.1 years for the Bloomberg U.S. Aggregate Index and 3.3 years for the Bloomberg U.S. Corporate High Yield 2% Issuer Capped Index, as of January 31, 2024. That makes duration and yield curve positioning a key component to selecting investments for our high income municipal strategies.

Following the Federal Reserve’s dovish pivot in December, when Chair Jerome Powell indicated that the central bank may have reached a peak in policy rates and would consider rate cuts, markets have started to price in a series of rate cuts this year. While we believe the Fed may begin to lower rates sometime in 2024, we also think that market expectations are still largely ahead of the data. The Personal Consumption Expenditures (PCE) Price Index reported core inflation of 2.9% in December, which is trending in the right direction but still has ground to cover in reaching the Fed’s 2% target. Meanwhile, unemployment figures remain historically low. 

That’s led some of our portfolio managers to keep a roughly neutral to slightly short duration stance, as there’s potential for volatility in interest rates as the market recalibrates its expectations. We expect that we’ll have more clarity on the economic environment and the path of rate cuts in the second half of the year, and our positioning will evolve accordingly. 

We currently have higher conviction that we may see a steepening of the yield curve, which has been inverted for an extended period. However, the muni-to-Treasury ratio (a comparison of the yield of muni bonds to those of U.S. Treasuries) is relatively low – an indication that muni debt is expensive relative to Treasuries. For example, yields on five-year AAA-rated general obligation bonds versus yields on five-year Treasuries reached a relative low muni-to-Treasury ratio of 62% as of January 31, 2024. In our view, that makes a long duration position centered on five-year Treasuries attractive, given they could do better than comparable munis in the event of curve steepening. 

2. Seeking opportunity in mid-quality credits 

Our typical hunting ground within the high yield muni funds managed by the team lies in the AA- to B-rated space. But we’ve been shifting our attention to higher rated credits given current spreads and valuations. We’re finding the best relative value in the AA-rated to BBB-rated space and prefer these types of mid-quality credits. 

We’ve been surprised by the resilience in muni bond spreads. High nominal losses for munis in 2022 and parts of 2023 would have usually resulted in a decline in investor demand for munis, leading to spread widening. Yet that hasn’t happened in a meaningful way, even in the face of recent economic softening. This makes the lowest quality parts of the muni market largely unattractive. 

We find spread levels on BB-rated and lower credits to be particularly low. We’re cautious about certain sectors in this bucket, such as tobacco (which involves debt backed by tobacco revenue streams), as valuations appear too low relative to fundamentals, and we would need a better risk premium to allocate more investor capital to the sector. 

Rosy market predictions for rate cuts may collide with the reality of a cautious Fed and lead to a weakening in the market. We believe focusing on higher quality bonds, such as BBB-rated debt, which have relatively limited potential for spread widening, is prudent. 

3. Finding shelter in housing

Housing, senior living and the tax allocation segment are a few of our favored areas of the market. 

Within housing, we favor debt on everything from Freddie Mac guaranteed multifamily bonds to planned amortization class (PAC) notes and California workforce housing debt. We’re finding compelling structures and levels in many parts of the market. For example, we’ve found select AA-rated PAC credits at spreads that are comparable to levels on broader B-rated munis. These bonds, which involve mortgages made to lower income borrowers guaranteed by the federal government, give us the opportunity to move up in credit quality without sacrificing yield.

A mixed bag for fundamentals highlights the need for security selection within senior living bonds; the industry faces operational headwinds from staffing shortages to margin compression, though it could benefit from favorable demand dynamics amid an aging U.S. population. We’ve gravitated toward projects in favorable locations that are often run by not-for-profit issuers that have a religious or other long-term orientation in their market. We believe there is potential for considerable spread tightening on select stronger issuers in the space.

Tax allocation bonds, which are often used to fund infrastructure and redevelopment projects, offer interesting risk-reward tradeoffs. We continue to find opportunities in bonds issued to fund land acquisitions for single-family housing developments, with most of the debt concentrated in projects located in suburban Denver, CO. These bonds offer relatively high yields and we’re comfortable with the risk given strong long-term demand drivers in the region, which we’ve witnessed through on-site research trips. 

4.  Absence of rating can be an opportunity, not a barrier

The unrated debt category may be an anomaly within the broader fixed income market, but it’s a common feature within munis. It’s often interpreted to imply weak credit quality, smaller deal sizing or low liquidity. Still, some of the largest and most actively traded muni bonds fall within this bucket since institutional investors regularly conduct their own research to determine creditworthiness. 

We’re finding opportunities in several large parts of the Puerto Rico market, which is largely unrated. The island, which sought a form of bankruptcy protection several years ago, has been making strides in improving its credit profile. We see the potential for spread tightening, especially if they opt to secure credit ratings on their debt. They have the potential to land relatively strong credit ratings for several borrowing structures, perhaps even reaching into investment grade territory.

On the flip side, we’re cautious about our exposure to unrated issuers in the tobacco space and find their valuations are often out of sync with fundamentals. We’re treading lightly here given declining smoking consumption trends. Our focus on strong credit research helps us uncover relative value and avoid potential pitfalls within the unrated category. 

5.  A good entry point on an absolute and relative basis

The bond market rally in December showed how quickly markets can turn. While yields have declined from their recent highs, they remain historically elevated and still offer opportunity. Average yields on the custom blend high-income muni index have more than doubled from 2.1% in mid-2021 to 4.9% as of January 31, 2024.

What’s more, yields on high-income munis are at times outstripping levels on high-yield corporate bonds on a tax-adjusted basis. For example, the high-income muni custom blend index delivered a tax-equivalent yield of 8.28% for the highest tax bracket compared with average yields of 7.8% on the Bloomberg U.S. Corporate High Yield 2% Issuer Capped Index as of January 31, 2024. That yield advantage extends down into some lower tax brackets as well.

Relative to corporate high-yield bonds, the pickup in yield is striking given that high-income munis feature relatively lower credit risk, limited default risk and relatively stronger diversification from equities. 

Leaning into high income munis 

Given its exposure to both credit and duration, the outlook for high-income munis is positive but somewhat dependent on the path of the economy and monetary policy. With inflation not entirely contained, we believe caution is warranted on future rate expectations. Still, we believe we may be at or near the end of the current rate hiking cycle, which can present an opportunity for bondholders.

For investors looking for ways to add income exposure, high income munis may offer an attractive alternative to the taxable high-yield market. A mix of attractive nominal yields, high duration exposure to capture price appreciation from falling rates, and attractive relative value opportunities could help to drive healthy returns this year. The potential for slowing economic growth and eventual Fed rate cuts make the category’s relatively higher credit quality and duration profile an attractive option for investors seeking strong income opportunities.