Real-World Example
A high-income investor in California may choose to invest in a California municipal bond that is triple tax-exempt, meaning the interest income is exempt from federal, state, and local income taxes. This can provide a higher after-tax yield than a taxable bond with the same nominal yield.
Rhyme
"Muni bonds, a tax break delight, for high-income folks, they're just right. Federal and state, taxes they evade, a wise investment choice, they've made."