A tool that will munge basic stock activity (buy/sells) with the input (as CSV). Most brokerage apps should already let you export your activity via CSV.

• Wash Sales
• Capital gains/losses after selling a share or all shares of a stock
  • All shares (current data below shows this scenario)
  • Partial sells (long-term goal)

Ideally, each input CSV will have its own detail similar to this:

Partial Apex Clearing sample:

Ideally, each security will have been aggregated and will have its own detail similar to this: