Cash Concentration

Cash concentration is the practice of gathering funds held across a company's many bank accounts, often belonging to different subsidiaries, regions or business lines, into a single central account, usually called the header or concentration account. The central treasury team can then see and use the group's cash in one place: to pay debts, invest surpluses, fund accounts that are short and reduce reliance on borrowing.

It is one of the core tools of cash management and corporate treasury. Cash concentration usually means physically moving money, which distinguishes it from notional pooling, where balances stay in their accounts and are only combined for calculating interest. It is often delivered through automated sweeping arrangements and forms the basis of a physical cash pool.

A company sets up a structure of accounts, typically with one header account and many participant accounts beneath it. At set times, usually at the end of each business day, the bank or the company's systems move money between them according to agreed rules:

• Zero balancing. Each participant account is brought back to zero. Credit balances move up to the header, and debit balances are covered from it. The participant accounts are known as zero balance accounts.
• Target balancing. Each account is swept to a set target, leaving a working balance for local needs, with the excess or shortfall moved to or from the header.
• Threshold sweeps. Money moves only when a balance passes an upper or lower limit, which reduces the number of transfers.

Within one bank, these transfers are simple book entries. Where accounts are held at different banks, the company or its treasury system initiates transfers, for example by ACH in the United States or by SEPA credit transfer in Europe, often based on balance reports received each morning, an approach used in multi-bank cash management.

• Visibility and control. Treasury knows how much cash the group has and where it is, which supports forecasting and decision-making.
• Lower borrowing costs. Surpluses in one unit fund deficits in another instead of the group borrowing externally while holding idle cash elsewhere.
• Better returns. Larger central balances can be invested more effectively, for example in money market funds or deposits.
• Reduced fees and risk. Fewer large balances spread across banks limits exposure to any one bank and simplifies controls.

These gains improve liquidity management and support a stronger working capital position across the group.

Because money moves between separate legal entities, each sweep creates an intercompany loan between the participant and the header account owner. Companies must record these positions, charge interest at market rates to satisfy transfer pricing rules, and reconcile them through intercompany reconciliation. Some countries restrict cross-border cash concentration through currency controls, withholding taxes on interest, thin capitalisation rules or limits on lending between companies. Directors of subsidiaries may also have duties to ensure that sweeping their company's cash to a parent does not harm its creditors. Banks typically require cross-guarantees or a cash management agreement setting out how the structure works and who is liable.

Multinationals often build concentration in layers: local pools in each country or currency, which then feed regional or global header accounts. Each currency is usually concentrated separately, because converting currencies daily would create foreign exchange costs and risk. Some groups combine physical concentration in some currencies with notional pooling in others, or use an in-house bank that holds the header accounts and lends to subsidiaries. Treasury teams run these structures through a treasury management system that tracks balances, intercompany positions and interest.

Cash concentration concentrates risk as well as cash. If the header account bank fails or an operational error stops sweeps, the whole group can be affected. Local units may resist losing control of their funds, and badly set target balances can leave accounts short for payroll or supplier payments. Legal and tax complexity grows with the number of countries involved, and errors in intercompany interest or documentation can lead to tax disputes. Companies therefore review concentration structures regularly, test their bank arrangements and keep contingency funding in place. Simpler arrangements, such as an account sweeping agreement between two accounts or a bank sweep account into an investment product, serve smaller businesses with similar aims.