What it means
Businesses with branches, franchises, subsidiaries or several payment processors tend to accumulate bank accounts. Each of those accounts holds an idle buffer, and collectively those buffers can add up to a large sum earning nothing while the parent company is simultaneously drawing on an overdraft.
A concentration account fixes that by physically or notionally moving balances upward each day. Physical concentration transfers the actual cash to the central account; notional pooling leaves the money where it is but lets the bank calculate interest on the combined net balance across the group.
The reason finance teams care is straightforward: cash that is visible is cash that can be used. With one balance to look at, a treasurer can pay down revolving debt, place surplus funds on overnight deposit, or fund payroll without arranging a short-term facility.
The mechanics usually involve zero-balance accounts feeding the concentration account. Each local account is swept to nil (or to an agreed minimum) at the end of the day by a standing instruction, and any local payment that clears the next day is automatically funded back down from the centre.
The nuance is governance. Sweeping cash between legal entities creates intercompany loans that must be documented, priced and disclosed, and in regulated sectors such as law or financial advice, client money must never be pooled with corporate cash.
In practice
Real-world examples.
Example
A dental group with 22 practices sweeps each practice's takings into a concentration account every evening. Head office now funds supplier payments from one balance instead of chasing eleven managers to move money before payment run day.
Example
An e-commerce brand collects through four payment processors, each settling into its own account. Automated daily transfers into a concentration account let the finance lead see the true cash position by 9am rather than reconciling four statements.
Example
A construction firm with project-specific accounts uses notional pooling so that a site running a temporary deficit is offset against sites in surplus. The bank charges interest only on the net position, cutting overdraft interest sharply without moving any actual cash.
Formula
Calculation
Cash released by concentration = (sum of local buffers held before pooling) - (central buffer required after pooling). Annual benefit = cash released x the rate you earn or the borrowing rate you avoid.
A retail chain runs six regional accounts, each holding a $40,000 operating buffer so that local payments never bounce.
Buffer held before pooling: 6 x $40,000 = $240,000.
After introducing daily sweeps into a concentration account, the treasury team models the combined outflow variability and concludes a single central buffer of $90,000 is enough.
Cash released: $240,000 - $90,000 = $150,000.
The company's revolving credit facility costs 4.5% a year, and the released cash is used to pay it down.
Annual benefit: $150,000 x 4.5% = $6,750. That is a permanent saving with no change to sales, staffing or pricing.Case study
Seen in the real world.
What follows is an illustrative, fictional case. Bellmoor Care Group, an invented operator of 14 residential care homes, held a separate current account for each home because that was how the business had grown, one acquisition at a time.
Each home manager kept what felt like a comfortable cushion, and the group treasurer estimated that around $310,000 sat idle across the network at any moment. At the same time the group was paying interest on a $500,000 overdraft at head office, which the board found difficult to defend once it was written down on one page.
In this fictional turnaround, the group moved to zero-balance accounts sweeping nightly into a concentration account, leaving each home with a small imprest float for petty cash. The overdraft was reduced, daily cash reporting replaced monthly guesswork, and the treasurer could finally answer the chief executive's question about how much cash the group actually had without opening 14 statements.
Watch out
Common mistakes.
- Sweeping cash between separate legal entities without documenting the intercompany loans. Auditors and tax authorities will treat undocumented transfers as a problem, and in some jurisdictions as a distribution.
- Pooling client or trust money with company money. Regulated firms must segregate client funds, and a concentration sweep that catches those balances is a serious compliance breach.
- Setting the central buffer using an average rather than the worst plausible day. Concentration reduces total buffer needs but does not eliminate the need to cover a spike in outflows.
Questions
People also ask.
Is a concentration account the same as cash pooling?
Not quite. Concentration usually means physically sweeping cash into one account, while cash pooling can also be notional, where balances are combined only for interest calculation.
Does concentration work across currencies?
It can, through multi-currency pooling structures, but cross-border and cross-currency arrangements bring withholding tax, exchange control and transfer pricing considerations that need specialist advice.
Do small businesses need one?
Usually not. The structure earns its keep once you have several accounts with meaningful idle balances or you are borrowing at head office while cash sits unused elsewhere.
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%