How long should you keep your utility bill statements?
The site I went to said if you are writing off your utility bills for taxes, then you need to keep them as tax records. Otherwise, keep 3 months--this establishes residency for mortgage apps, voter registration, drivers license, etc.
Answer You should keep your statements because you need them for when taxes come out. And since you must keep tax-related records for 7 years, you potentially should keep them for that long. Reference the related link below. Other Opinions Since you can only dispute a charge within the first 60 to 90 days of it being entered then it is generally safe to discard statements after the 90 day period for dispute has expired.
Keeping your 401k statements is always a good idea. Weather you are using them to track the past performance of your portfolio, or just to keep for your records. However most 401k record keepers allow you to generate statements online. So if you were to through them out, or misplace them you could generate a new one online, or call your customer service number to have copies of the statements sent to you.
We usually don't need to keep statements from a closed bank account because, once an account is closed, no transactions can be done on it. So even if someone wants to impersonate you, they cannot use the account that you just closed. But it is always a good habit to keep atleast one or two statements of the account that you just closed in order to utilize for future reference purposes for yourself.