[beh9540]

SARs are required to be reported for all daily cash deposits greater than $10K by the Bank Secrecy Act.[1]

Cash heavy businesses could easily hit this level, as well as large transactions that are perfectly legal, so you wouldn't want to stop doing business with a customer, just because they deposited a large amount of cash.

[1] https://www.occ.treas.gov/topics/supervision-and-examination...

[wemblee]

I mentioned this above on another comment but you're confusing SARs and CTRs.

[vmception]

and the threshold is not inflation linked, or location linked. it is just a 50 year misused law that has successfully spent the last half-century stigmatizing the concept of having money to move in the minds of people without money who want it.