What it means
Banks impose minimum balances because small, active accounts cost money to run. The requirement is a way of saying that a customer either leaves enough deposits to be worth serving or pays a fee that covers the cost directly.
The measurement method matters more than the headline number. Some accounts test the average daily balance across the month, some test the lowest balance on any single day, and the second is far harder to satisfy because one badly timed payment can trigger the fee for the whole month.
For a business, minimum balances create a quiet cash flow constraint. Money parked to satisfy a balance requirement is not available for stock, wages or supplier payments, so it functions as restricted cash even though nothing on the statement labels it that way.
The cost is best expressed as a rate rather than a fee. A $15 monthly fee is $180 a year, and if the balance required to avoid it is $2,500, that is 7.2% a year on the money tied up, which is a genuinely expensive way to hold a bank account.
A related idea is the compensating balance, where a business lending agreement requires the borrower to keep a set deposit at the same bank. It looks like a courtesy but it raises the effective interest rate on the loan, because the borrower pays interest on money it cannot actually use.
In practice
Real-world examples.
Example
A freelance designer keeps $1,500 in a business account with a $2,000 minimum. The $12 monthly fee costs her $144 a year, so she moves to a fee-free account with no balance requirement and no interest.
Example
A restaurant with heavy Friday payroll outflows drops below its lowest daily balance requirement twice a quarter, even though its average balance is comfortably above the threshold. Switching to an account tested on average daily balance eliminates the fee entirely.
Example
A manufacturer negotiating a $500,000 facility is asked to keep $50,000 on deposit with the lender. It calculates that the compensating balance raises the effective interest rate on the borrowed funds by roughly one percentage point and negotiates the requirement down to $20,000.
Formula
Calculation
Two calculations matter: Annual fee cost = Monthly fee x 12, and Effective cost of the tied-up balance = Annual fee / minimum balance required.
A small business current account charges a $15 monthly maintenance fee unless the account holds an average daily balance of at least $2,500.
Annual fee = $15 x 12 = $180. Effective cost = $180 / $2,500 = 7.2% a year.
Now compare the options. Keeping $2,500 idle costs the business 7.2% in avoided fees but earns nothing, whereas paying the $180 fee frees $2,500 that could fund stock generating a 25% gross margin, worth $625 of contribution if turned once. On those numbers the business is better off paying the fee, which is the opposite of most people's instinct.Case study
Seen in the real world.
Waverley Print Studio is a fictional business used here as an illustrative example. It ran three bank accounts: a main operating account with a $5,000 minimum, a payroll account with a $2,500 minimum, and a tax reserve account with a $1,000 minimum, each carrying a monthly fee of $15 to $25 if the balance was breached.
The owner treated the $8,500 of combined minimums as untouchable and repeatedly delayed paper purchases because cash looked tight. In practice the business was paying $660 a year in fees anyway, because the payroll account regularly dipped below its threshold on the day wages cleared.
The illustrative studio consolidated into a single operating account with a $5,000 average daily balance requirement, moved its tax reserve into a fee-free savings account, and released about $3,500 of working capital. It eliminated the whole $660 of annual fees and, more usefully, stopped scheduling purchases around an artificial balance floor.
Watch out
Common mistakes.
- Assuming the minimum balance is tested on the average when it is actually tested on the lowest daily figure. Read the account terms, because the difference decides whether a single large payment triggers a month of fees.
- Treating money held to meet a minimum balance as available cash. It is effectively restricted, and cash flow forecasts that ignore this overstate what the business can actually spend.
- Keeping a large idle balance purely to avoid a small fee. Compare the fee against what the same money could earn or fund elsewhere, because avoiding a $180 fee by freezing $2,500 is rarely the better trade.
Questions
People also ask.
Does a minimum balance requirement apply to every account?
No, and many basic personal and business accounts have no requirement at all, though they may offer lower interest or fewer included services in return.
What is a compensating balance?
It is a deposit a borrower agrees to maintain with the lending bank as a condition of a loan, and it raises the effective cost of borrowing because the borrower cannot use that money.
How do I avoid minimum balance fees?
Consolidate accounts so one balance does the work of several, choose an account measured on average daily balance, or move to a fee-free account and accept lower interest.
From the founder's library
Take it further with the book.
Build your financial confidence beyond this definition. Shihan's full-length guide, Accounting Fundamentals, takes the same plain-English approach and turns it into a complete, practical playbook for non-finance managers, business owners and students - with chapter-end quiz answers and presentation slides included.
25% off with code MMHQ25, applied at checkout. Priced in USD - checkout may show the equivalent in your local currency.
View the book and save 25%