The problem is that many stock traders use their 1099-B reports to estimate their taxes and may have underestimated what they really owe.
The culprit is that most broker 1099-Bs are not adequate for filing an accurate tax return, nor were they designed for that purpose. How can that be? The simple fact is that there are different IRS rules for taxpayers than there are for the brokers, mostly related to the wash sale rules.













