Inventory Optimization: A Practical Guide to Carrying Cost and Working Capital

Build an inventory decision model from your own demand, lead-time, carrying-cost, and service-policy data. The formulas below support analysis; they do not promise a business outcome.

Inventory Review Areas

  • Inventory value Establish the recorded value by SKU, location, and ownership status.
  • Aging and movement Separate active, slow-moving, excess, and inactive stock using your own policy.
  • Carrying-cost inputs Document the financing, storage, risk, insurance, and tax assumptions used in planning.

Buyer-input cost model

Model carrying-cost changes from your assumptions

Enter four assumptions from one consistent inventory scope and annual period. Inputs start blank, and nothing is estimated until you choose Calculate estimates.

Your assumptions

  • Average inventory value Currency amount

    Use the recorded average value for the SKUs, locations, and period in scope.

  • Annual carrying-cost rate Percent

    Use your documented annual financing, storage, risk, insurance, and tax rate.

  • Modeled inventory change Percent

    Enter the percentage decrease you want to examine as an assumption, not a promised reduction.

  • Annual software cost assumption Currency amount

    Use a documented annual cost in the same currency as the inventory value.

Calculate estimates

Reset blank model

Estimated results from your assumptions

Estimated current carrying cost from your assumptions
Not calculated
Estimated inventory change from your assumptions
Not calculated
Estimated carrying-cost change from your assumptions
Not calculated
Estimated net benefit from your assumptions
Not calculated
Estimated ROI from your assumptions
Not calculated

Unavailable because the annual software cost denominator is not positive.

Formula explanations

Current carrying cost
Average inventory value × annual carrying-cost rate
Modeled inventory change
Average inventory value × modeled inventory-change percentage
Carrying-cost change
Modeled inventory change × annual carrying-cost rate
Net benefit
Carrying-cost change − annual software cost assumption
ROI
Net benefit ÷ annual software cost assumption × one hundred; available only when annual software cost is greater than zero

How to use this estimate

  • Every result is an estimate calculated only from the visitor's assumptions. It is not a quote, forecast, benchmark, or customer result, and the model does not guarantee an outcome.
  • The model does not account for implementation time, taxes, financing changes, service-level effects, stockouts, write-offs, or other operating costs unless you include them in your assumptions.
  • Validate modeled changes against accounting and inventory records before using them in a purchasing decision.
  • The calculation runs in this browser. Completion measurement sends the model identity, page path, release, and presentation locale, but no entered values or calculated results.
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