The IRS recommends taxpayers keep their returns and any supporting documentation for three years after the date of filing.You may want to keep records on assets such as stocks, bonds or your house longer than the statute of limitations suggests.
Here is a TurboTax article that provides additional information https://turbotax.intuit.com/tax-tools/tax-tips/General-Tax-Tips/How-Long-Do-Federal-and-State-Tax-Re...
