NYLI MacKay Muni Intermediate ETF (MMIT)

MMIT is an exchange-traded fund that holds intermediate-term municipal bonds — IOUs issued by states, cities, and other local government entities — with the goal of delivering federally tax-exempt income to investors in higher tax brackets.

What exactly is a municipal bond?

A municipal bond is debt issued by a state, city, county, school district, or other local government agency to fund infrastructure, schools, hospitals, and public services. Unlike Treasury bonds, which are issued by the federal government, municipal bonds are exempt from federal income tax. That tax advantage is their whole point. If a municipal bond pays 4%, that 4% arrives tax-free, whereas a taxable bond paying 4% leaves you with less after Uncle Sam takes his cut. For investors in high federal tax brackets — roughly those in the 32% bracket and above — municipal bonds can offer superior after-tax yields compared to Treasury bonds or corporate bonds of similar maturity.

MMIT specifically targets intermediate-term municipal debt, which is typically defined as bonds maturing in 4 to 10 years. That maturity range sits in the middle ground: longer than short-term bonds (which pay less), shorter than long-term bonds (which swing in price more when interest rates move).

How MMIT actually works

MMIT is a passive exchange-traded fund, meaning it aims to track an index of municipal bonds rather than trying to outperform one. The fund holds a portfolio of investment-grade municipal bonds with intermediate maturities, rebalances mechanically, and charges a modest expense ratio for the management. Because it is a fund, not an individual bond, you own a diversified slice of hundreds or thousands of bonds across many states and issuers, which limits your risk if any single municipality runs into trouble.

Like all ETFs, MMIT trades continuously during market hours on an exchange — in this case typically the NASDAQ. You buy and sell shares at market prices, not at net asset value the way you would with a mutual fund at day’s end. For investors who want exposure to municipal debt but do not want to buy and hold individual bonds, an ETF is a flexible way to gain that exposure and exit when needed.

The fund distributes its interest income to shareholders regularly, usually monthly. That income arrives tax-free at the federal level, though it may be subject to state or local tax depending on where you live and where the bonds are issued.

Why hold municipal bonds in an ETF

Individual municipal bonds are illiquid and typically carry high minimum purchases — $5,000 or $25,000 per bond is common. An ETF solves both problems: you can buy a single share on the exchange and exit instantly. The diversification is another advantage. Owning 10 bonds exposes you to 10 risks; owning a fund holding 500 bonds spreads that risk much more thinly.

The tax efficiency of municipal bonds also makes them particularly suited to taxable accounts — IRAs and 401(k)s are already tax-sheltered, so the federal tax exemption adds no value there. If you have money outside retirement accounts and sit in a high federal tax bracket, MMIT can be a way to get meaningful after-tax income while taking less duration risk than a long-term bond fund would.

The real risks

Municipal bonds are not risk-free. The main risks are credit risk (the issuer defaults or its rating falls and bond prices fall with it), interest-rate risk (if rates rise, the fund’s price falls because older, lower-yielding bonds become less attractive), and liquidity risk (though much less acute in an ETF than in an individual bond).

Intermediate bonds face less interest-rate sensitivity than long-term bonds — if rates rise 1%, an intermediate bond typically falls in price less than a long-term bond would. But that sensitivity is real, and in a rising-rate environment MMIT’s net asset value will decline as the bonds in the portfolio lose value.

Default risk in high-quality municipal bonds is historically low, but it is not zero. The 2008 financial crisis and the COVID pandemic both saw municipal bond yields rise sharply, and a few issuers actually defaulted. MMIT mitigates this by holding only investment-grade bonds — the safer tier — but that does not guarantee safety.

How to research MMIT

Start with the fund’s prospectus and fact sheet, which detail its holdings, its index, and its expense ratio. Look at the fund’s composition by bond type (general-obligation vs. revenue bonds), by state (concentration matters), and by maturity ladder. The fund’s average duration and yield relative to Treasury yields will tell you what premium the market is paying for tax-exempt income. For anyone serious about municipal bonds, the Bond Buyer index and individual municipal bond data from FINRA are the benchmarks that tell you whether MMIT’s yields are competitive.