I recently sold stock I held in a private company. They do not issue 1099-Bs. In TurboTax Premier Windows desktop edition, I was able to enter the capital loss via the 'Step by Step' process. However, upon reviewing the "1099-B Wks (No Financial Institution)" form, I noticed a checkmark for "Yes" in the "Taxpayer must mail in a statement with more details" at the bottom of the form.
The only cost basis evidence I have is a spreadsheet showing historical share prices. I also took a picture of the stock certificate before I turned it in to the company when I sold the stock. The image of the certificate has the number of shares and date acquired but no price (cost basis). I calculated the capital loss based on the date of the stock certificate and the price of the stock on the date sold based on the spreadsheet of price history.
Questions:
1. What details do I need to 'mail' in to the IRS and what address do I mail it to?
3. Is the spreadsheet of historical prices and the stock certificate image sufficient proof for the IRS?
Many thanks!
