Electronic records are the way to go. Hire a student for the summer to start scanning, starting with the most recent prior year. We did this and went back ten years. All the paperwork was then shredded. We did keep the paper records of a very few clients who had really complex histories, but now all original docs are returned to the client when the return is completed. We also keep original docs with sigs for POAs. We offered clients with massive old files the opportunity to retrieve them if them desired--only one did. It is so easy to find things in the electronic file cabinet--no digging in file drawers, where something is always misfiled, no need to refile anything. Client needs W2s for the past three years? Print them out in a minute. IRS notice and your response? Right there under the year in question. The back room is now usable instead of being lined with filing cabinets, and no one has to muster the courage to go down in the basement.