Brokerage statements will not always report the cost basis and/or sales category, even if the information is available right on the 1099-B. The IRS is receiving the 1099-B information from the broker, but is relying on you to report the correct cost basis and category.
To get back to the 1099-B screen:
Federal Taxes > Wages &
Income >
Scroll down to Investment Income, then click Show More
Select Start next to Stocks, Mutual Funds, Bonds, Other
For unreported cost basis:
Make a reasonable estimate, based on old trade confirmations or historical prices from a source such as www.finance.yahoo.com
For unreported sales category:
If you held the security less than one year, use code C (short-term, not reported)
If you held the security more than one year, use code F (long-term, not reported)
