[gunapologist99]

(It's a myth that there's an IRS 7 years 'statute of limitations'. It's far more nuanced than that: https://www.irs.gov/businesses/small-businesses-self-employe... )

However, it's still a reasonable time frame, and also, probably coincidentally, 7 years after the last update on any individual record is how long it will take to essentially reboot your U.S. credit report, so seven years sounds quite reasonable.

[justinclift]

The time frame should (of course) match how long the information will remain valid.

And SSNs are for life aren't they?

So, it's not like the information is going to expire.