What happen If the Tax Professional does not establish basis for an asset that is sold the?

If a tax professional fails to establish the basis for an asset that is sold, the taxpayer may face inaccurate tax reporting, potentially leading to overpayment or underpayment of taxes. Without a documented basis, it becomes challenging to determine the capital gain or loss from the sale, which can result in penalties or audits by tax authorities. Additionally, the taxpayer might miss out on deductions that could lower their tax liability. Ultimately, this oversight can have significant financial implications for the taxpayer.