If you get down to only one share, then you're broke. Hopefully you made it to SS age. Otherwise, VTSAX pays about 1.8X% dividend. So if you're looking at a majority of your income by selling shares, it's only slightly more than the dividend yield. So while majority is the correct term, it's closer to a 50/50 split. Not that it matters. Whether you're taking 4% in dividends, selling 4% in capital gains, or some combination in between, the net effect on your portfolio is exactly the same.