A cash reserve protects the business when revenue slows, a customer pays late, equipment fails, or an opportunity requires quick action. A generic rule is useful only as a starting point.
Calculate the operating base
List the monthly cash obligations that continue even when sales decline: payroll, rent, insurance, essential software, debt payments, taxes, and minimum owner compensation. Separate essential costs from spending that could be paused.
Adjust for risk
A business with recurring contracts, many customers, low overhead, and a reliable credit line may need less reserve than a seasonal company dependent on two large customers. Longer customer payment terms and volatile margins increase the need for cash.
Choose a target range
Many businesses begin with three months of essential obligations and work toward six months when risk is higher. The right target depends on the company rather than an industry slogan.
Build the reserve deliberately
- Open a separate reserve account.
- Transfer a fixed percentage of collections or profit each month.
- Define what qualifies as an emergency.
- Create a written replenishment plan for any withdrawal.
Review the target quarterly. As payroll, debt, seasonality, and customer concentration change, the reserve should change too.