Tax Loss harvesting+ is the practice of selling a security that has experienced a loss. By realizing, or harvesting a loss, investors are able to offset taxes on both gains and income. The sold security is replaced by a similar one, which helps maintain an optimal asset allocation and expected returns. While Betterment tracks your TLH+ losses within your account and displays them to those who have enabled the feature, the IRS requires Betterment to report total gain and loss figures from all ...