https://home.capitalone360.com/rates https://www.simple.com/policies/rates/
I'd be better off just playing the market at that point (or using something like betterment/wealthfront to hold most money).
Simple is nice because the interface/app are solid and they have incredible customer service. The only other thing I'd want from them is a decent rewards credit card.
I am baffled by anyone who peaks their checking account beyond 30-40k.
I'm sure CapitalOne has "budget tools" marked off of some internal checklist but imagine it's pretty crappy.
Giving up a few bucks a month in exchange for a great budgeting tool is the reason I use Simple.
The only thing which has worked is the Simple app that by opening it tells her exactly how much money she can spend without sabotaging her savings goals.
I would use it, but I can't because I have a working US visa and they only let you make an account if you're a US citizen.