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Inventory Systems

Perpetual vs. Periodic Inventory Systems

Companies use either a perpetual or periodic inventory system to track inventory. A perpetual system continuously updates inventory balances, while a periodic system updates inventory only at the end of the accounting period.

Note
Most modern businesses use perpetual inventory systems because technology allows real-time inventory tracking.
Summary
Perpetual systems provide continuous inventory information, while periodic systems determine inventory balances only after physical counts.