Thanks to all on this distinguished panel I am learning more and more about taxable accounts. I have a two part question about 100,000 investment I have recently opened at Vanguard. I am currently in the 15% tax bracket. If at some point next year for example I realize a 10,000 long term capital gain can I then reinvest back into these positions? I believe then that my new cost basis would be 110,000 and no tax due on the gain because the sale added to my income would keep me in the 15% tax bracket? Secondly are dividends added to my cost basis? What if they are realized?