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Retail inventory method calculator

Estimate what your stock is worth at cost without a full count. Use the same period for every number.

Cost-to-retail ratio
Ending inventory at retail
Ending inventory at cost

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The math

  • Cost-to-retail ratio = (beginning inventory at cost + purchases at cost) ÷ (beginning inventory at retail + purchases at retail).
  • Ending inventory at retail = beginning inventory at retail + purchases at retail − sales.
  • Ending inventory at cost = ending inventory at retail × cost-to-retail ratio.

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