Non-Interest-Bearing Deposits

Customer bank accounts that do not pay interest, serving as a highly profitable, low-cost source of funding for banks.

Non-interest-bearing deposits are customer funds held in checking or transactional accounts that do not pay any interest yield. These deposits represent the most valuable and lowest-cost funding source a commercial bank can secure, as the bank pays nothing to the depositor for the right to hold and deploy these funds. For investors, the proportion of non-interest-bearing deposits in a bank's total deposit mix is a prime indicator of franchise strength and customer loyalty. When interest rates rise, banks with a high percentage of these deposits can keep their overall funding costs low, preserving or expanding their net interest margins. This is because they do not have to raise deposit rates to retain these core transactional accounts, which are typically tied to primary operational relationships. If customers begin migrating these funds into high-yield savings accounts, money market funds, or other interest-bearing alternatives, the bank's funding costs rise. This phenomenon, known as deposit migration, can compress profitability. Investors monitor this metric closely during monetary tightening cycles to assess how well a bank can defend its low-cost funding base.

Bank A has $100 billion in total deposits. Of this total, $35 billion is held in corporate checking accounts that pay 0% interest, while the remaining $65 billion is in interest-bearing savings accounts and certificates of deposit. The proportion of non-interest-bearing deposits is calculated as $35 billion / $100 billion = 35% of the total deposit base.