Average Daily Balance: Why It Matters More Than Ending Balance in Lending

Ending Balance vs. Average Daily Balance

The ending balance shown on a bank statement is just the balance on the last day of the statement period. It can be misleading — a borrower might have a $15,000 ending balance because they just received their paycheck, but their balance might routinely drop to $200 mid-month.

Average daily balance, by contrast, represents the typical balance maintained throughout the month — a much more accurate measure of financial health.

How Average Daily Balance Is Calculated

Average daily balance is calculated by adding up the account balance at the end of each day during the statement period and dividing by the number of days:

ADB = Sum of daily balances ÷ Number of days in period

For example, in a 30-day month where the account has $5,000 for 15 days and $500 for 15 days: ADB = ($75,000 + $7,500) ÷ 30 = $2,750

Why Average Daily Balance Matters for Lenders

• Reveals whether the borrower consistently maintains adequate funds
• Shows how long after paycheck the account is depleted
• Indicates whether the borrower lives paycheck to paycheck
• Provides context for NSF events (did they occur at near-zero balance periods?)

Healthy Average Daily Balance Benchmarks

• Personal loans: ADB should exceed 1-2 months of proposed payment
• Business loans: ADB should exceed 1 month of total debt service
• Mortgage: ADB should demonstrate consistent cash management ability

How StatementScrub Calculates ADB

StatementScrub automatically calculates average daily balance, lowest balance during the period, and ending balance for every analyzed statement, giving lenders the complete balance picture in seconds.