Capital Group Municipal Income ETF (CGMU)

What exactly are municipal bonds, and why would I own them?

Municipal bonds are debts issued by U.S. state and local governments — states, cities, counties, school districts, water authorities, hospital systems, and highway commissions all issue them to fund projects ranging from roads and bridges to schools and stadiums. When you buy a municipal bond, you are lending money to that government and receiving interest payments in return. The defining feature that makes municipal bonds distinctive is tax treatment: the interest you receive is exempt from federal income tax, and often exempt from state and local income tax too if you are a resident of the issuing state.

That tax break is powerful for high-income taxpayers. If you are in the 37 percent federal tax bracket and a municipal bond yields 4 percent, that is equivalent to a taxable bond yield of roughly 6.3 percent — because you do not have to surrender 37 cents of every dollar earned to the federal government. A retiree or a wealthy investor who does not need the full economic return because a large chunk would vanish to taxes may rationally prefer a 4 percent tax-free muni yield to a 6 percent taxable yield. Capital Group’s Municipal Income ETF, trading under the ticker CGMU, holds a diversified portfolio of these bonds specifically for investors pursuing that tax advantage.

How does CGMU choose which bonds to own?

CGMU is actively managed, which means Capital Group’s fixed-income analysts research individual municipal bond offerings and decide which ones belong in the fund. Municipal bonds are not all the same. Some are backed by revenues from a specific project (a toll road, a water system, a hospital); others are backed by the general taxing power of a state or city. Some are investment-grade (low default risk); some are lower-rated. The fund restricts itself to investment-grade securities — bonds rated BBB- or higher by the rating agencies — which means CGMU is not a high-yield muni bond fund and avoids the riskiest issuers.

The portfolio typically holds 200 to 300 different bonds across dozens of states and types of issuers. That diversification protects against concentration risk — if one city faces a fiscal crisis and defaults on its bonds, CGMU’s single holding in that issuer represents only a small percentage of the fund. Capital Group’s team watches for issuers showing signs of fiscal stress and can exit those positions before the market reprices them downward. That active management is the theory; the practice depends on how well the managers actually execute.

Who should own CGMU, and who should avoid it?

Municipal bonds make sense for high-income earners in high tax brackets. A person in the 24 percent federal tax bracket might find little or no advantage in tax-free muni yields versus taxable bonds, because the tax savings are modest. Someone in the 37 percent bracket finds the advantage compelling. State and local income taxes deepen that advantage for residents — a California or New York resident who owns California or New York munis effectively gets both federal and state tax-free treatment.

CGMU is not ideal for tax-deferred accounts like IRAs or 401(k)s, because the tax-exemption provides no benefit inside a vehicle that already shields you from taxes. Inside a Roth or traditional retirement account, owning CGMU would be irrational when higher-yielding taxable bonds are available.

What risks should I watch?

The most obvious risk is credit risk: a municipal issuer that loses revenue or faces sudden costs could default on its bonds. The COVID-19 pandemic created short-term revenue shocks in many municipalities; a severe recession could do the same. CGMU limits that risk by owning only investment-grade bonds, but investment-grade is not risk-free — even AAA-rated municipalities face interest-rate risk if rates rise sharply.

Interest-rate risk is actually the biggest risk in CGMU. If interest rates rise substantially, the market value of the fund’s holdings falls, because newly issued bonds will offer higher yields and make the existing lower-yielding bonds less valuable. If you need to sell CGMU shares before the bonds mature, you might take a loss. A long-term holder who simply collects the income and holds to maturity does not face this issue; it only matters if you need liquidity.

Liquidity is the third consideration. The municipal bond market is less liquid than the Treasury market or corporate bond markets. Selling a large position can move prices against you. CGMU’s size and Capital Group’s market presence help, but it is worth understanding that this is not an asset class where you can instantly move a billion dollars.

Lastly, the tax-exemption itself could theoretically be at risk — if Congress changed the tax code, the advantage would evaporate. That is a low-probability but non-zero risk.

How do I evaluate whether CGMU is adding value?

Start by comparing CGMU’s yield to the yield on a broad taxable bond fund, then adjust for your own marginal tax rate. If CGMU yields 4 percent and a taxable bond fund yields 5.5 percent, and you are in the 27 percent federal tax bracket, the after-tax yields are roughly equivalent — 4 percent free versus 4.015 percent after tax. At that point, CGMU’s active management needs to earn its fee or the position does not make sense.

Look at the fund’s credit quality. What percentage of the portfolio is AA and above versus A or BBB? A portfolio weighted toward AAA and AA bonds is safer but will probably yield less; one weighted toward BBB bonds will yield more but carries more risk. The fund’s holdings should match your personal risk tolerance.

Check the portfolio’s average maturity. A fund of long-maturity bonds will be more volatile when rates change than a fund of short-maturity bonds. If you need stability, shorter maturity is better; if you can tolerate volatility and want higher yields, longer maturity is reasonable.

Finally, compare CGMU to passive municipal bond indices and to other active muni managers. If CGMU trails its benchmark consistently, the active management is not paying for itself. If it outperforms, that supports the higher fee.