Tax-Equivalent Yield: Why High Yield Munis Can Outperform

Key Takeaways:

• Tax-equivalent yield adjusts a muni bond’s tax-free income to show what a taxable bond would need to yield to match it after taxes.
• For investors in a high federal tax bracket, high yield munis can offer meaningfully higher after-tax income than corporate high yield.
• Triple tax-free status in certain states pushes the advantage even further, making high yield munis a compelling income tool for tax-sensitive portfolios.

What Is Tax-Equivalent Yield and Why Does It Matter?

Tax-equivalent yield (TEY) is the pre-tax yield a taxable bond would need to offer in order to match the after-tax income of a tax-exempt municipal bond. It’s the standard way to compare munis and taxable bonds on a level playing field.

This matters because a muni bond yielding 4% isn’t directly comparable to a corporate bond yielding 5%. Once you account for the taxes owed on the corporate bond’s income, the muni may actually deliver more cash to the investor. TEY makes that comparison explicit.

How Is Tax-Equivalent Yield Calculated?

The formula is straightforward: divide the muni yield by (1 minus the investor’s marginal tax rate). For example, a 4% muni yield for an investor in the 32% federal bracket produces a TEY of 5.88%. That means a taxable bond would need to yield at least 5.88% to deliver the same after-tax income.

The higher the tax bracket, the more valuable the tax exemption becomes, and the higher the TEY climbs.

Tax-Equivalent Yield by Federal Tax Bracket

Assumes a 4% muni yield for illustrative purposes. TEY = Muni Yield / (1 - Federal Tax Rate).

How Do High Yield Munis Push Tax-Equivalent Yield Even Higher?

High yield munis start with a higher base yield than investment grade munis, which amplifies the TEY advantage. A high yield muni yielding 5% in the 35% bracket produces a TEY of 7.69%, a level that many corporate high yield bonds struggle to match consistently.

Because the tax exemption applies to the full coupon, the absolute dollar benefit of tax-free status grows as the yield increases. This makes the high yield segment of the muni market particularly attractive for income-focused investors in higher brackets.

Why Corporate High Yield Often Loses to Munis on an After-Tax Basis

Corporate high yield bonds may offer higher nominal yields, but that income is fully taxable at federal (and often state) rates. For an investor in the 35% bracket, a 7% corporate yield shrinks to roughly 4.55% after federal taxes alone. A high yield muni yielding 5% keeps the full 5%.

This after-tax gap is why many advisors and high-net-worth investors increasingly view high yield munis as a core income allocation rather than a niche holding.

What Is Triple Tax-Free Status and Who Benefits Most?

Municipal bonds issued within an investor’s home state are often exempt from federal, state, and local income taxes. This triple tax-free status can push TEY significantly higher, especially in high-tax states like California, New York, and New Jersey.

For a New York City resident in the top federal bracket who also faces state and city income taxes, the combined marginal rate can exceed 50%. In that scenario, a 4% triple tax-free muni has a TEY above 8%, making it extremely difficult for taxable alternatives to compete.

How to Access High Yield Muni Exposure

The VanEck High Yield Muni ETF (HYD) tracks the ICE Broad High Yield Crossover Municipal Index, providing broad exposure to the U.S. dollar-denominated high yield, long-term, tax-exempt municipal bond market. For investors seeking a shorter-duration option, the VanEck Short High Yield Muni ETF (SHYD) focuses on the 1 to 12 year maturity range within the same high yield muni universe.

Both funds offer a straightforward way to access the tax-equivalent yield advantage of high yield munis within a diversified, index-based framework.

ICE Broad High Yield Crossover Municipal Index (MHYX) is intended to track the overall performance of the U.S. dollar denominated high yield long-term tax-exempt bond market.