Minimum Cash Balance

A gym has enough cash today to buy new equipment, but rent and payroll are due before customers renew memberships, and spending the whole bank balance could leave it unable to meet those bills. A minimum cash balance helps set a limit for discretionary decisions.

The floor should reflect the business's actual timing and risks, such as payroll, rent, tax, debt payments, seasonal sales and how late customers usually pay. A steady subscription company may need a different buffer from a project contractor with uneven receipts.

Australia's business.gov.au guide recommends planning cash flow, keeping records and using cash flow statements to see whether bills can be paid, and SCORE discusses building an emergency fund. These are planning references, not a universal mandated minimum.

A simple starting method is weeks of essential outflows, so if core cash costs are $80,000 per week and management chooses six weeks of cover, the illustrative floor is $480,000. Define what counts as available cash, because restricted deposits or client money may be on the balance sheet but unavailable for ordinary operations, and cash held in another country or currency can carry transfer and exchange constraints.

A revolving credit line may be a fallback, but it is not identical to cash in the bank, so check whether it is committed, available and subject to covenants. Forecast by week or day when timing is tight, starting with opening cash, adding realistic collections and subtracting planned payments.

Compare each period's lowest projected balance with the floor, not only the month-end total, and use conservative assumptions for receipts because an invoice due next Tuesday may be paid late while payroll has a firm date. Stress-test what happens if the largest customer delays and a repair bill arrives at the same time.

The floor should trigger a response plan, which may include collecting overdue receivables, postponing a nonessential purchase, negotiating payment terms or arranging finance early. Set escalation thresholds before cash reaches zero, so finance alerts management when the forecast comes within a specified margin of the minimum.

Holding too much idle cash has a cost too, since money not invested in needed equipment or used to reduce expensive debt may lower returns, so the right level balances safety with opportunity. Revisit the minimum after expansion, new debt, a large customer loss or seasonal change, and document the reason for each change so the floor does not move simply to make a forecast look acceptable.

Minimum cash is distinct from cash runway, which asks how long available cash lasts at a projected burn rate, and from a lender's covenant, which may require a minimum liquidity ratio or cash amount under specified definitions. A sole owner should separate business and owner money before drawing excess cash after a strong month, and a dashboard can show actual cash, restricted cash, the chosen floor, the lowest forecast balance, the expected date of any breach and the owner of the response, with any reserve account judged by genuine access to the funds when bills fall due.