I can see why you are confused. The rule is that for you to consider your dividends or interest tax exempt the FUND not how much you received, has to be invested more than 50% in a combination of US obligations and your state municipal obligations. You can find that percentage in the information accompanying your tax form from the brokerage. I can’t see your original post as I write this, but my recollection is the your fund did not have more than 50% in those obligations and if that is true, your income from that fund is not tax exempt.
