Banky team Reviewed editorial answerIt's a minimum amount that might be required to open an account, calculate interest, or avoid a fee; these three things don't have to be the same.
When comparing two accounts, ask specifically, "What's the minimum for what?" instead of relying on a single figure in the advertisement.
The figures, fees and limits in this answer vary by bank and change over time — confirm them with your bank or the official source before acting.