Yes, but only if you purchased shares with the same dollar amount for any period of time.  Even if you changed the dollar amount, this feature can still help you.  On the input page, scroll down to the Systematic Investment gray box and click on the plus sign.  You only need to enter the start date of your purchase, the end date, the frequency with which these purchases occurred and the dollar amount.  If you changed the dollar amount after a period of time, you can open a second row and enter the information to reflect the second start and end dates, frequency and dollar amounts.  After you are done, click Calculate.  You will see that Netbasis has identified and displayed all of the tax lots for your to review and then click Get My Report to Calculate the cost basis.