Inventory turnover measures how many times inventory is sold and replaced within a specific period (usually annually). It is calculated as Cost of Goods Sold divided by Average Inventory Value. Higher turnover indicates more efficient inventory management.
Inventory TurnoverがAmazonセラーにとって重要な理由
Inventory turnover directly impacts cash flow, storage costs, and IPI score on Amazon. Products that sit in FBA warehouses incur monthly storage fees and long-term storage surcharges, eroding margins significantly.
RIDGEによるInventory Turnoverの分析方法
RIDGE reports include inventory planning with recommended order quantities, reorder points, and turn rate projections based on estimated sales velocity and seasonality patterns.
実践的な例
A product with $120,000 annual COGS and $20,000 average inventory has 6x inventory turnover — meaning inventory fully cycles every 2 months. This is healthy for most Amazon categories.
よくある質問
What is a good inventory turnover rate for Amazon FBA?+
Most successful FBA products aim for 6-12x annual turnover (inventory cycling every 1-2 months). Lower turnover incurs higher storage costs; too high turnover risks stockouts. Optimal turnover depends on lead time and seasonality.
How does inventory turnover affect profitability?+
Higher turnover means less capital tied up in inventory, lower storage fees, and better cash flow. A product turning 12x/year at 25% margin generates better returns than a product turning 3x/year at 35% margin, because capital is deployed more efficiently.