What it means
Large or geographically spread businesses often bank locally for collections, because local branches, local clearing systems and local card acquirers are faster and cheaper for taking money in. That convenience creates a fragmented picture, with cash sitting in many institutions and nobody holding the full view.
The concentration bank solves the fragmentation. It is chosen to be the destination for all those flows, and the other banks become depository banks whose job is simply to collect and forward funds upward on a defined schedule.
Choosing the concentration bank is a genuine commercial decision rather than an administrative one. Treasurers weigh the quality of the bank's reporting and payment platform, its credit appetite for the group's borrowing, its geographic reach, its cut-off times, and the counterparty risk of holding a large balance in one institution.
Transfer mechanics drive a surprising amount of the cost. Wire transfers move money the same day but cost several dollars each, while automated clearing house transfers cost cents and take a day, so most structures use cheap batch transfers routinely and reserve wires for genuine same-day needs.
The main nuance is concentration risk in the other sense of the word. Putting every dollar into one bank simplifies management but creates a single point of failure, so many groups keep a secondary banking relationship and a tested contingency plan for redirecting flows.
In practice
Real-world examples.
Example
A franchise restaurant group nominates one national bank as its concentration bank and instructs all 60 franchisee deposit accounts to sweep there each night. Head office funds the weekly supplier run from a single balance rather than moving money between banks manually.
Example
A logistics company that collects cash in three countries appoints a concentration bank with branches in each, so local collections are swept into country accounts and then into one regional header account. Reporting that used to take two days now arrives in one file each morning.
Example
A university spins out its commercial subsidiaries and keeps its existing relationship bank as the concentration bank for all of them. The treasurer negotiates a better deposit rate on the pooled balance than any single subsidiary could have obtained alone.
Formula
Calculation
Annual transfer cost = number of depository banks x transfers per bank per year x cost per transfer.
A national services group collects through 25 local depository banks and currently instructs one same-day wire from each bank every business day. Wires cost $12 each and there are 250 business days in the year.
Daily wire cost: 25 x $12 = $300.
Annual wire cost: $300 x 250 = $75,000.
The treasurer reviews the timing and concludes that only two of the accounts ever need same-day movement. Switching the rest to next-day automated clearing house transfers at $0.35 each gives:
Daily cost: 25 x $0.35 = $8.75. Annual cost: $8.75 x 250 = $2,187.50.
Annual saving: $75,000 - $2,187.50 = $72,812.50, at the cost of one extra day of float on most of the flows.Case study
Seen in the real world.
The following case is illustrative and fictional. Ardenway Retail Group, an invented chain of 48 garden centres, had banked with whichever institution was nearest to each site since the 1990s and held accounts across nine different banks.
Every Friday a finance assistant spent most of the day logging into nine portals, reading balances into a spreadsheet and instructing wires to head office. In this fictional account, the treasurer calculated that the manual process cost around $46,000 a year in transfer fees and staff time, and produced a cash position that was already stale by the time the board saw it.
Ardenway ran a tender, appointed a single concentration bank, and moved the other eight to automated overnight sweeps. The fictional result was one consolidated statement each morning, a materially smaller transfer bill, and a finance assistant redeployed onto supplier payment terms, which turned out to be worth more than the fee savings.
Watch out
Common mistakes.
- Choosing the concentration bank purely on transaction pricing. Reporting quality, cut-off times and the bank's willingness to lend to the group usually matter far more over a full cycle.
- Using same-day wires for every sweep by default. Most flows do not need same-day settlement, and the difference between wire and batch pricing can run into tens of thousands of dollars a year.
- Ignoring deposit protection and counterparty limits once the balance is concentrated. A pooled balance can easily exceed any protection scheme, so the credit quality of the chosen bank becomes a board-level question.
Questions
People also ask.
Is the concentration bank different from a concentration account?
Yes. The concentration account is the account itself, and the concentration bank is the institution that holds it and receives the incoming sweeps.
Can a company have more than one concentration bank?
It can, and larger groups often run one per currency or per region, with a further layer that consolidates those header accounts.
What happens if the concentration bank has an outage?
Flows are redirected to a backup relationship, which is why treasurers keep a secondary bank with live accounts and a documented switch procedure rather than a dormant arrangement.
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