Cash transactions do not, so spending, receiving, and if one is crazy storage can be done without institutions.
That hypothetical $10k transaction for instance only sets alarm bells off if it’s an abnormal transaction for an individual account.
Someone doing a cash business is going to do stuff like that so much, it’s a drop in the bucket and no one cares. Coin shops, check cashing places, certain types of convenience stores and restaurants, etc.
If they manage the cash themselves instead of a cash drop, such as if they are a dispensary and are unbanked, a given dollar bill can circulate a very long time before touching a bank, depending on which parts of the economy it touches.
The reality is it isn’t super hard to launder funds apparently, so it ends up back in a bank somewhere soon, but with the intermediary transactions hidden.
Do you mean bank transfer?
Let’s say I buy a legal widget for $10K and I pay cash and I don’t plan to treat it as a business expense. On my side, I’m done, and any alarm that might be invoked is the problem of the seller, and probably dependent on their compliance with weakly enforced regulations.
For some classes of widget I might want a receipt, but definitely not for all. You can easily spend that much on a birthday dinner with your friends, if that’s your thing.
I don’t think anybody is arguing that cash is “entirely separated from financial institutions” but — even above $10K — it allows for the possibility (not the guarantee) of transaction privacy.
Devon Zuegel talks with EconTalk host Russ Roberts about the crazy world of money and finance in Argentina. When inflation is often high and unpredictable, people look for unusual ways to hold their savings. And when banks are unreliable because of public policy, people look for unusual ways to keep their savings safe and to make financial transactions. Welcome to Argentina, where Zuegel finds surprising applications of cryptocurrency for solving problems.
https://www.econtalk.org/devon-zuegel-on-inflation-argentina...
So, no, cash isn't entirely separated from financial institutions.