is a standalone windows based pc program designed to calculate disallowed losses resulting from the buying and selling of stocks and options. It was written to satisfy the stringent reporting requirement of large financial institutions, hedge funds and major accounting firms and strictly conforms to the rules set forth in Internal Revenue Code Section 1091(a). Using either an excel worksheet or a csv file as its input, creates an excel workbook containing multiple worksheets that provide all of the reports and supporting data you need to correctly report your Wash Sales and your Constructive Sales.

In addition to the detailed wash sale report which shows the calculation on a lot by lot basis within each security, the program also delivers a number of additional reports. One of these provides those transactions triggering a Tax Unrealized situation; another one, the Warnings Report, shows the specific realized losses that could be lost if a substantially identical position is entered into within the 30 day wash sale period as of a given date. Optional reports cover Straddles, Constructive Sales and 1233 Reclassifications. A copy of the input file used in the calculations and a Summary worksheet are also included in the results workbook.

PS: You can find an example of the complete output workbook with all of its worksheets on our TOOLS & SAMPLES page.

One last note: our installation process doesn't create any hidden files or change the registry settings on your pc. is "installed" using a self-extracting executable that merely copies all of the necessary files to our own directory wemspc on your resident c: drive.