How many years must a taxpayer keep records that support a claim for a loss from worthless securities or a bad debt deduction?

A taxpayer must keep records to support a claim for a loss from worthless securities or a bad debt deduction for seven years. This period aligns with the IRS guidelines, which recommend retaining records that substantiate any information on a tax return. For claims associated with bad debts or worthless securities, maintaining records for seven years is essential, particularly because these types of claims can be complex and may require detailed proof of the loss and its legitimacy. This duration allows taxpayers to respond to any inquiries from the IRS if needed and ensures they have the necessary documentation to substantiate their claims within the specified timeframe.