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A credit analyst sees ABB, AMB and ADB on different credit memos and cannot tell whether they mean the same thing or how the borrower's balance compares with the proposed EMI.
ADB averages the closing balance of every day in the period. AMB or ABB averages month-end or a few sampled dates per month. Both are then compared with the proposed EMI and the balance on EMI dates.
Six or twelve months of statements, a fixed set of sample dates per month if the lender's policy uses sampling, and the proposed EMI amount and debit date.
An average balance figure, a ratio of average balance to EMI, and a list of days when the balance fell below the EMI.
ABB (average bank balance), AMB (average monthly balance) and ADB (average daily balance) all describe the typical balance a bank account carries. ADB averages every single day; AMB and ABB usually average month-end figures or a few sampled dates. Lenders compare the result with the EMI they are about to approve, to see whether the account can carry it.
How do ABB, AMB and ADB differ?
The three terms overlap, and different lenders use them differently. The table shows the common meaning.
| Term | How it is usually calculated | How a lender uses it |
|---|---|---|
| ADB (average daily balance) | Sum of each day’s closing balance divided by the number of days | Most complete picture of the funds the account holds |
| AMB (average monthly balance) | Average of month-end balances, or of the daily balances inside one month | Quick monthly trend across 6 or 12 months |
| ABB (average bank balance) | Average of the closing balance on sampled dates, such as the 5th, 15th and 25th | Fast check that the account holds funds on typical EMI dates |
Banks use similar averages for a different job. A savings or current account may carry a minimum-balance rule measured as MAB (monthly average balance) or AQB (average quarterly balance). That rule decides whether the bank levies a charge. It says nothing about repayment capacity, so do not mix the two figures up in a credit note.
Why is the balance on EMI debit dates more telling than the monthly average?
An EMI is debited on one day, not across the month. If the account holds ₹60,000 on the 25th but only ₹4,000 on the 5th, a 5th-of-month EMI will be returned even though the monthly average looks healthy.
Common reasons an average misleads:
- A large customer receipt lands late in the month and lifts the average.
- Salary or sales money is moved out within a day or two of arriving.
- Funds are parked just before month-end and withdrawn after it.
- A one-off credit, such as a loan disbursal or asset sale, inflates a single month.
This is why many analysts read the average together with the lowest balance in each month and the balance on the proposed EMI date.
Worked example: a good average with a bad day
An applicant runs a small trading business and asks for a loan with an EMI of ₹14,500, debited on the 5th. The lender’s policy samples four dates in the month. The closing balances are:
| Sample date | Closing balance |
|---|---|
| 5th | ₹9,500 |
| 12th | ₹42,000 |
| 20th | ₹61,000 |
| 28th | ₹18,000 |
| Total | ₹1,30,500 |
ABB = ₹1,30,500 ÷ 4 = ₹32,625.
₹32,625 is more than twice the ₹14,500 EMI, so the average looks comfortable. But on the 5th, the EMI date, the balance was only ₹9,500. That is ₹5,000 short of the EMI. If this pattern repeats, the debit would be returned for insufficient funds, with a return charge and a mark on the borrower’s record.
An analyst who sees this would check the other months. If the 5th is low in most of them, options include moving the EMI date closer to when receipts arrive, or reducing the loan amount.
What should a new analyst check alongside the average?
- The lowest closing balance in each month.
- The balance on the proposed EMI date in every month.
- The number of days the balance stayed below the EMI amount.
- Whether one or two large credits explain most of the average.
- Returned debits, which show the account has already run short.
What to read next
The next step is to calculate ADB properly, day by day: how to calculate average daily balance from a bank statement. To see how balance behaviour sits among other statement signals, read bank statement analysis accuracy signals and building a synthetic balance sheet from an MSME bank statement.
TransactIQ reads Indian bank statements for lenders and returns balance behaviour among its 40+ engineered credit signals. See the bank statement analyzer page.