Why I Ignore the Ending Balance and Focus on the Low Water Mark in MCA Underwriting

Why I Ignore the Ending Balance and Focus on the Low Water Mark in MCA Underwriting

In the merchant cash advance space, bank statement analysis is what separates amateur underwriters from the veterans. While brokers and merchants constantly point to impressive ending balances on the last day of the month, I am digging deeper into intraday account activity to find the real story.

Why the Ending Balance is a Vanity Metric

A merchant can easily inflate their ending balance by parking a large wire transfer in the account at 4 PM on the final day of the month. This creates a misleading snapshot that looks healthy on paper but does not reflect the actual cash flow reality throughout the month. I treat the ending balance as a vanity metric because it tells me almost nothing about their daily liquidity stress.

How I Calculate the Low Water Mark

The low water mark represents the lowest point an account balance reaches during a typical business day. This usually occurs in the morning after automatic ACH drafts are processed but before customer deposits clear as collected funds.

To calculate it, I look at the ledger balance at the start of the business day. I subtract all outgoing ACH drafts that typically hit between 6 AM and 9 AM. Crucially, I do not add incoming deposits until they actually clear. If this calculation shows a negative balance, the merchant is technically insolvent for several hours every single day.

Why the Low Water Mark Predicts My Defaults

When I layer a daily repayment obligation on top of an already negative morning balance, the result is almost always an NSF cascade. The account cannot support my daily debit because it is already underwater before the first customer payment arrives.

I see merchants with healthy average daily balances fail all the time because their low water mark is consistently negative. A business might show a $20,000 average daily balance while simultaneously dropping to negative $5,000 every morning at 8 AM. This tells me the merchant is relying on incoming deposits to cover yesterday's obligations. It is a dangerous cycle that any additional debt service will instantly break.

How Merchants Try to Hide the Low Water Mark

Experienced business owners know that underwriters look for intraday cash flow problems. To mask a negative low water mark, some merchants set up automatic sweeps that move money from a savings account into the operating account just before morning drafts hit. This creates the illusion of adequate liquidity.

I detect this by analyzing sweep patterns, examining the exact timing of transfers, and calculating the standard deviation of their daily balances. I also review multiple months of statements to see if the low water mark is improving or deteriorating.

The Bottom Line

A merchant's ending balance is irrelevant to me if the account hits negative five thousand dollars at 8 AM every morning. I ignore the vanity metrics and focus on the low water mark because it reveals the true cash flow health of a business.

When I evaluate an application, the question is not whether the account has money at the end of the month, it is whether the account can survive the morning without going negative.