You should receive a 1099-B from your broker for the sales (usually in February). When you enter that into TurboTax it will create a schedule D (capital gains and losses) that will calculate the deduction. Be sure to enter your cost basis for the securities when the interview asks. You can add any commissions paid to the cost basis (i.e. the higher the cost basis the greater the loss and the larger the deduction).
**Disclaimer: This post is for discussion purposes only and is NOT tax advice. The author takes no responsibility for the accuracy of any information in this post.**
