That means many investors will have to sell assets at a loss, going against one of the most basic investing rules, to buy low and sell high. How tax loss harvesting works Investors who have sold assets at a loss this year from a brokerage account can use that to offset or even completely erase any capital gains taxes owed. If your losses exceed your capital gains or you didn't have any, you can deduct up to $3,000 of income from your federal tax bill. Evercore ISI in a Nov. 6 note made a list of such stocks that it sees as good buying opportunities if you sold a similar name for tax loss harvesting. Because of this, it may make sense to consult both a tax professional and a financial advisor to ensure you're using tax loss harvesting as efficiently as possible.

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