The accounting assumption that a business will continue to operate indefinitely is the going concern assumption.
It means financial statements are prepared on the expectation that the entity will remain in business for the foreseeable future, rather than liquidating immediately. “Indefinitely” is a useful quiz shorthand; accounting standards usually frame the period as the foreseeable future, often including at least 12 months.
This assumption affects measurement. Assets are generally recorded on the basis that the business can use them and recover their value through normal operations, while liabilities are settled in the ordinary course. A company that bought five-year equipment, for example, would normally depreciate it over its useful life instead of valuing it as if it were being sold tomorrow.
Going concern does not mean a business is guaranteed to survive. Auditors consider warning signs such as recurring losses, loan defaults, or an inability to meet obligations. If liquidation becomes likely, financial statements may need a liquidation basis instead. Periodicity concerns reporting time periods, while the economic entity assumption separates the business from its owner.