I have used this product for organizing my tax papers for several years. Each divider is for a form or topic on the 1040. As the receipts come in they are placed in the binder. It certainly makes filling out the form much easier since the paperwork is already together.
This product is absoultely terrible. I bought as a required supply for elementary school. It completely fell apart in less than a week. I finally found a wire bound plastic version at WalMart for HALF the price and it's still going strong after two months. I had purchased two so that my student would have a backup halfway through the school year. I took the second one back immediately. Don't waste your money or your time. I only gave it 1 star because it wouldn't let me give it zero stars.
We have been using this since my daughter was very young in school. Each subject gets a different folder all in one place. She is still using it now that she is in college.
It is perfectly good but beware upon removing the packaging card which is attached to the spiral: if one pulls that card off the portfolio with any kind of force the plastic spiral spine goes with it and not the folders! With a few minutes work the portfolio can be put back together but take it easy and avoid the extra work.