NOTE: Banks have a maximum of $250k in insured deposits
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...
See post related post that covers this, additional options, and HN user comments here:
How to Insure Your Money When You’re Banking over $250K (2022)