📝 Executive Summary
Investors choosing between the iShares 5-10 Year Investment Grade Corporate Bond ETF (IGIB) and the iShares National Muni Bond ETF (MUB) must prioritize tax status over headline yield. While IGIB offers a higher 4.9% dividend yield, MUB provides federal tax-exempt income that often benefits high-bracket investors in taxable accounts. The optimal choice depends on the investor's specific tax bracket and the type of account holding the assets.