Finance · United States
Ecommerce Cash Flow Forecast Calculator
Enter monthly revenue, cost structure, marketplace payout delay, and planned inventory outlays. The forecast shows month-end cash balance for the next 3 months.
Inputs
Result
- Monthly gross profit (before opex)
- $36,000.00
- Monthly ad spend
- $10,800.00
- Monthly cash-in (after returns & delay)
- $29,440.00
- Month 1 ending cash
- $6,640.00
- Month 2 ending cash
- $2,280.00
- Month 3 ending cash
- -$11,080.00
Cash goes negative (-$11,080.00). Reduce inventory buy, pace ads, or arrange a credit line.
Payout delay is a simplified average — Shopify, Amazon, and Etsy each release funds on different schedules.
Method
Month cash = Opening cash + Payouts received − Ad spend − Inventory buy − Fixed costs − Return refunds.
Frequently asked questions
How often should I forecast?
Weekly is ideal during high-growth months. Monthly is fine for stable operations.
Does this replace an accountant?
No — it's a planning aid. Reconcile with actual bank statements before making capital decisions.
Method and guidance reviewed by the AIFlowBiz Editorial Team.
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Related reading
Educational tool. Not financial, tax, or legal advice. Confirm current marketplace fees and tax rates from official sources.