Your client in the 25% federal income tax bracket lives in a state where his earnings place him in the 6% bracket for state income tax purposes. If he were to purchase a 4% bond issued by a political subdivision of another state, his total tax-equivalent yield would be

Slightly more than 5.33%.

Explanation:

In case when the municipal bond owned by an individual i.e. issued is not for interest free tax rate but also it is non tax on that particular state

So here the tax-equivalent yield is

= Purchase bond percentage ÷ (1 - tax rate)

= 0.04 ÷ (1 - 0.25)

= 5.33%

Hence, his total tax-equivalent yield is 5.33% i.e. calculated by applying the above formula

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