It doesn't matter. IRA withdrawals are taxed at ordinary income rates, regardless of the type of investments in the IRA. That's why there is little or no advantage to holding tax-exempt investments in an IRA. This website gives a more detailed discussion: https://www.fool.com/investing/general/2015/02/24/2-investments-to-avoid-in-your-ira.aspx
**Answers are correct to the best of my ability but do not constitute tax or legal advice.
