

Average Daily Balance (ADB) is the average amount of money held in an account over a billing or statement period, calculated by adding the closing balance for each day and dividing by the number of days.
Banks in India often use ADB to determine whether a savings or current account meets minimum balance requirements, and credit card issuers use a similar method to calculate interest charges on revolving balances.
To calculate ADB, the bank sums the end-of-day balance for every day in the period and divides the total by the number of days in that period, rather than relying on a single point-in-time balance.
Understanding ADB helps businesses avoid penalty charges for non-maintenance of minimum balances and better plan cash positioning across multiple accounts.