What the IRS expects of electronic records
The IRS allows businesses to keep records electronically and has published guidance on it. Revenue Procedure 97-22 addresses electronic storage systems, including systems that image paper records, and Revenue Procedure 98-25 addresses records kept in machine-sensible form, such as accounting system data.
In broad terms, that guidance looks for records that are accurate and complete, kept in a way that lets them be retrieved and read, and protected against unauthorized changes. It also expects you to be able to produce legible copies when asked. If you intend to scan paper and discard the originals, read the guidance with your tax professional first, because the details matter.
Retention periods depend on the record and the situation. Our companion article on how long to keep business records summarizes the general periods the IRS describes.