Form 1099-B, Proceeds from Broker and Barter Exchange Transactions, is an information return that brokers and other financial institutions must file with the IRS and provide to their clients. It reports the details of the transactions, including the sale or exchange of capital assets, the proceeds received, and the cost basis of the assets. A substitute statement is a document that a taxpayer may receive instead of a Form 1099-B if the original form was not provided or was lost. The substitute statement must contain the same information as the Form 1099-B and is used to report the capital gains or losses on Form 8949.