Expands but only at the top not at the bottom so when it's full it will not stand up but tip over. Also the dividers are not fastened to the bottom so small papers (like credit card receipts) could slide under the divider and not be in the divider you expect them to be.
I work from home and save every receipt for business purposes. This folder is perfect. I put receipts in the folder (by month) on a daily basis. I have folders for each year. I can hand those over for accounting and not think twice about them.
This thing is amazing! this revolutionizes the way that bills are handled. Before I just put all of my bills in a shoebox for storing but this way if I ever have to go back and find a bill or paystub for a certain month I just go right too it.
On-line viewing is not sufficient for electronic files. All systems especially financial data require off-site storage for legal backup and recovery. Applies to both corporate small business and personal.