Working Capital Tied in Inventory Formula
How apparel executives calculate the working capital locked in inventory — the CFO-level view of inventory productivity.
What Working Capital Tied in Inventory measures
This is the dollar amount of working capital effectively locked in inventory given how long inventory is held before selling. It is the finance-led translation of inventory turns into a balance-sheet view.
Working Capital = Average Inventory at Cost × (Days Held ÷ 365)It is the calculation CFOs use to frame inventory discipline as a cash-cycle decision, not a merchandising preference.
Worked apparel example
Average inventory at cost of $450K held an average of 90 days.
Working Capital = $450K × (90 ÷ 365) = $110.9K
At any given moment, roughly $111K of working capital is locked in inventory that will convert to cash in the next 90 days. Shorten days held to 60 and working capital locked drops to ~$74K — $37K released for other uses.
$110,959 of working capital is effectively locked in inventory for this period. Shorter days held = faster cash cycle; every day matters at scale.
Why it matters at scale
For a $50M revenue apparel brand with 4× turns, average inventory at cost is roughly $6M. Every 10 days reduction in average days held releases ~$165K of working capital. At 20% growth targets, that's money that can fund the next tranche of buy without debt or dilution.
Failure modes we see
Inventory productivity framed only as turns or GMROI. Merchandising thinks in turns; finance thinks in working capital. Without the working-capital view, merchandising decisions that slow turns (heavier buys, longer hold) look fine in the merchandising dashboard and invisible in the P&L impact.
How RetailNorthstar handles working capital
Working capital locked is a live view at department and class level. Decisions that extend days held — chase orders, markdown holds, aged inventory not written down — all get the working-capital translation attached.
Related formulas
- Inventory Turns — the velocity framing
- GMROI — margin-adjusted productivity
- Weeks of Supply — the weekly operational version
See working capital locked in inventory live — so merchandising decisions are always framed in cash-cycle terms, not just turns.
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