Tax-free bond yields are in a sweet spot. Get in before it’s too late.

Municipal bonds have become notably more attractive relative to corporate debt on a taxable-equivalent basis. Over the past two months, the yield advantage that tax-free municipals offer has widened substantially, meaning investors in higher tax brackets may now receive more after-tax income from a muni than from a comparable taxable corporate bond.

The shift matters because municipal interest is generally exempt from federal income tax, so its value depends on an investor's marginal rate. When the taxable-equivalent yield spread widens, it signals that the market is pricing munis cheaply relative to corporates — often a function of supply, demand, or shifting rate expectations rather than a change in credit quality.

What to watch: whether this spread persists or compresses, and how it interacts with your own tax situation and time horizon. Widened spreads can reflect opportunity, but they can also reflect market stress. As always, the after-tax math varies by investor, so the comparison is a starting point for research, not a conclusion.