Exchange-traded funds (ETFs) offer significant tax advantages over mutual funds, particularly for investors in taxable accounts, due to their unique structure that minimizes capital gains distributions. This efficiency is especially beneficial for U.S. growth stocks, which derive over 95% of their returns from capital gains. However, bond ETFs provide less of a tax edge, as their returns are primarily from income, and during market volatility, bond ETFs may disconnect from their underlying asset values more than mutual funds.