The phrase "minimum daily balance" refers to the smallest amount of money you need to have in your account each day. It is a requirement set by the bank or financial institution to avoid fees or qualify for certain benefits. Full definition
No monthly service charge with minimum daily balance of $ 2,500 or more. (public.websteronline.com)
The bonus is a draw for this account and so is the low, minimum daily balance requirement of $ 100 to waive the $ 15 monthly maintenance fee. (gobankingrates.com)
The last thing you want to do is open a free account and be hit with minimum daily balances and fees that make it feel like you're losing money instead of saving it. (policygenius.com)