Or for one year, if tossing right away makes you nervous.

Keep opening paperwork for all retirement accounts, insurance accounts, etc.

Something else I heard recently was that you should keep a copy of your insurance policies (home and car) until the statute of limitations runs out. I think that varies from state to state but maybe not. So if you could be sued for something for up to 3 years after the incident date, you should keep your policies for at least 3 years.

I kept everything pertaining to the IRS and ended up putting past years information organized in a box in the filing cabinet. Someone here wrote that suggestion and it works for me.

Since I move so often, I have had way more than most people of accounts that have been opened and closed. But when I culled everything, I kept the earliest statement for all closed accounts as well as the last one I could find. At least, I feel I've kept a record just in case. I'm sure I'll never need any of it but having them makes me feel safer.

I got lucky in that a local company was doing free shredding one Saturday and they shredded everything for me.

The link below is an example of my personal file for the iphone I was lucky enough to get.