Cash Cycle Stress Test

Model how much working capital you need to keep one SKU in stock across a full reorder cycle. Every number on screen is computed directly from your inputs, no external data.

Order economics

Unit COGS (USD)Units per POSell price (USD)Units sold per day

Cycle inputs

Supplier net terms (days)Inbound to FBA (days)Amazon payout cycle (days)Monthly operating expenses (USD)

Working capital needed for one cycle$7,950Covers the PO and 99 days of operating expenses.

PO outlay$3,000500 units × $6

Cycle length99 daysOutlay to last payout

Sell-through time50 daysAt current sales velocity

Reorders per year3.7If you reorder back-to-back

First payout in49 daysFrom cash outlay to first Amazon payout

Gross profit per cycle$9,495Revenue $12,495 − COGS

Gross profit ignores Amazon fees, returns, ads, and storage. Use the RAS Engine for a fee-loaded margin estimate on a real ASIN. This tool isolates the cash-cycle mechanics only.