I'm not in the enviable position of needing to allocate huge multiples of the FDIC limit, but this has been a learning experience. I knew that for individuals, you could use the FDIC limit multiple times, by having joint/single accounts at the same bank. I now know that does NOT apply to business accounts.

I will likely open accounts with a couple banks in the coming months, so that I can shuffle things around if needed. I was already looking at ways to get higher yields, and I guess I will diversify while I'm at it.

I'd be curious to know what folks are doing who have to manage 10-20x the FDIC limit. Seems like we're all now on notice that bank runs are a thing, and it would be irresponsible to put all your eggs in one basket.