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

Yields on municipal bonds have widened notably relative to corporate bonds over the past two months on a taxable-equivalent basis, a shift that has drawn attention to the relative value of tax-exempt debt. Because muni interest is generally exempt from federal income tax, comparing it directly with corporate yields requires an adjustment that accounts for an investor's tax bracket. When that adjustment is applied, the gap between the two has become more pronounced.

For investors in higher tax brackets, the after-tax math can look more favorable than it has in some time. Still, tax-equivalent yield is only one input in the decision. Credit quality varies widely across issuers, and municipal bonds can carry risks — including interest-rate sensitivity and, in some cases, liquidity constraints — that corporate bonds do not.

What to watch: whether this spread persists or compresses as issuance and demand shift, and how individual tax circumstances affect the comparison. Any decision should rest on the investor's own bracket, time horizon, and risk tolerance rather than on yield alone.