Which principle of health financing involves spreading risk across a population?

• A. Pooling spreads risk.
• B. Prepayment funds services before illness (e.g., payroll tax).
• C. Protection from financial risk.
• D. Out-of-pocket payments.

Answer: (A)

Spreading risk across a population is achieved through pooling, a fundamental principle of health financing. By collecting contributions from many people into a single pool, the financial burden of illness is shared rather than borne by individuals alone. This means most people contribute at manageable, predictable costs, while the relatively few who need extensive care are supported by the pool. The effect is financial protection for individuals and greater fairness in access to care.

Prepayment is a common way to build that pool—funding services before illness, such as through payroll taxes—so the system can cover care when needed. However, the core idea is pooling itself: combining resources to distribute risk. Protection from financial risk is the outcome pooling enables, while out-of-pocket payments work against pooling by shifting cost pressure directly to individuals at the point of care.