Per the IRS:

Period of Limitations that apply to income tax returns 1. Keep records for 3 years if situations (4), (5), and (6) below do not apply to you. 2. Keep records for 3 years from the date you filed your original return or 2 years from the date you paid the tax, whichever is later, if you file a claim for credit or refund after you file your return. 3. Keep records for 7 years if you file a claim for a loss from worthless securities or bad debt deduction. 4. Keep records for 6 years if you do not report income that you should report, and it is more than 25% of the gross income shown on your return. 5. Keep records indefinitely if you do not file a return. 6. Keep records indefinitely if you file a fraudulent return. 7. Keep employment tax records for at least 4 years after the date that the tax becomes due or is paid, whichever is later.

These rules officially apply to business, but they're a decent rule of thumb for personal (W2 employment) as well.

When I got paper bills, I would only keep them up to two years.

I usually keep them for 2 years. That's only because I do budget payments, I keep the full last cycle for household utilities. Other shit like cellular, I don't bother.

I just learned that if you don't keep an Apple purchase receipt, they can brick your device permanently on a whim with no recourse.

The older the better. Make sure you list them in your will.

I keep all my vehicle work. That includes oil changes. I would keep bills for 3 years then toss them.

10 years is a good rule by larger corps, which I have followed for a couple reasons.

You like to be reminded of how much they are stealing from you through inflation?