My broker used the adjusted stock price to calculate cost basis of stock purchased through the dividend reinvestment program and this was reported to the IRS. My quarterly statements show the actual stock price. Since I sold the stock at a loss (based on the quarterly statement stock price) but the adjusted stock price is lower creating a gain instead of a loss I will be paying more tax if I used the cost basis shown in the broker statement. The stock I sold goes back more than 10 years and I don't really want to fix every quarterly reinvestment price, but the capital gain difference I estimate is substantial. My "broker's" response (Computershare) is to suggest I get the help of a Tax advisor to understand cost basis instead of explaining why they used adjusted stock price. Any suggestions?
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