The form in which tax records are stored？
Storage of tax records (including, for example, bank statements, tax returns, insurance policies, etc.) can be achieved by means of scanning, electronic documents, cloud backup, etc.
How long tax records need to be stored is sufficient？
Federal law requires keeping copies of tax returns and supporting documents for three years. However, if the IRS believes that you have significantly underreported income (25% or more), or believes there may be indications of fraud, it may go back six years in the audit. To be on the safe side, please use the following guidelines.
Note: When backing up, keep your files confidential to avoid identity theft.
