My wife used payroll deduction to purchase stock in a DSPP and has been in th plan since 2001. We sold a lareg portion of the stock in Dec 2018. How do I determine cost basis for the sale (FIFO), to determine Capital Gains. Which forms do I have to fill out for IRS. On the turbotax worksheet there is no stock plan labeled DSPP but there are four other choices(ESPP, NQSOor ISO, Restricted stock, or RSU), which one would I use?
Any guidance would help
