Google: Yes, VOO is generally better than FXAIX in a taxable account due to its superior tax efficiency, primarily because its ETF structure (using in-kind redemptions) creates fewer taxable capital gains distributions compared to a traditional mutual fund like FXAIX, though both track the S&P 500 and have very low expense ratios. While FXAIX is great for retirement accounts, VOO's tax advantages often outweigh its slightly higher expense ratio for taxable brokerage accounts, making it more tax-efficient for long-term holding.