There is a risk question that companies are responsible for that I see is glossed over. No, you shouldn’t have to spread your business accounts to limit them to 250k. But you must know it’s not insured above this, just like a money market account is not a guaranteed rate of return or even guaranteed against capital loss. Have lines of credit with alternate banks, or insurance on that additional money.

Or, just like when the market tanks, you suck it up and get back 80% of your capital on deposit because you couldn’t foresee a money market checking account could lose capital even though it’s spelled out on EVERY SINGLE statement and offering letter from the bank.