So for individual people, this affects... maybe 5%. It certainly affects small companies, but those are entities that we, as a society, expect to have good financial advisors. (It turns out that many of them do not.)
Every bank and credit union I've ever dealt with has prominently placed the FDIC or NCUA insurance terms on their paperwork, website and physical doors. When you sign up for an account with a brokerage/bank, they are always explicit about what accounts, if any, are protected savings and which are unprotected investment accounts.
It is insurance only for those in-the-know.
The letters "CFO" are pronounced "those in the know".
Doing a cash sweep is NOT rocket science and there are lots of services that can do it for you.
A company can also project forward and ladder treasury instruments to mature at the right times to provide liquidity. T-{notes,bills,bonds} are issued by the US government and thus have at least as much resiliency as the SDIC.
If you're an owner and you need over 250k to be liquid on daily to weekly timescales, but hiring a three people to manage manage your bank accounts sounds unaffordable, you should find a 3rd party that can do that "cash sweep" thing for you.
Beyond 3 years it makes sense to spread it among Index fund, gold ETF etc., depending on your need, risk appetite etc., But then we are venturing into "investment" and not "safe keeping".
https://www.treasurydirect.gov/marketable-securities/treasur...
On your own account, once you reach $250k in cash (not pensions or home equity etc) you're basically in the financial 1% and you're sort of expected to be either sophisticated or speak to a "wealth management" firm.
As a business it's more complicated in the intermediate zone before you can hire a Treasury Officer to deal with this, which is basically patio11's argument.
Just don’t exceed the insured amount in a single bank, and if you do need to have more than $250k in cash… either open a second account at a different bank or donate it.
Putting money in the stock market is not the answer for everyone and their savings.
So if you have $1M parked in one account then you're at risk. $250K parked in 4 accounts caries zero risk.
Joint accounts are covered at 500k
When a revocable trust owner names five or fewer beneficiaries, the owner's trust deposits are insured up to $250,000 for each unique beneficiary
So 4 people = $1m
https://www.fdic.gov/resources/deposit-insurance/brochures/i...