What the result shows
How long the cash in your bank could cover the current monthly shortfall, and how that window changes if sales rise or ad spend jumps.
Ecommerce Cash Runway Calculator
Test how long your cash could last
Use monthly cash coming in and going out. Include stock purchases only if they are already in your monthly costs.
Cash runway at the current pace
24.0 months
Calculate to see the calendar date. Use the shorter scenario below as the earlier date to protect cash or arrange funding.
- Runway if revenue rises 10%
- Cash-positive
- Runway if ad spend rises 25%
- 10.7 months
- Current monthly cash shortfall
- $5,000
Stronger-sales date: No cash-out date at this pace
Higher-ad-spend date: Calculate to see the calendar date
Know when to protect cash.
How it is calculated
Subtract monthly cash received from monthly fixed costs, variable costs, and ad spend. Divide current cash by that monthly shortfall.
How to use it
Plan around the shortest runway. If it is too short, test a lower ad budget, delay a stock order, collect cash sooner, or arrange funding before the gap appears.
What this result leaves out
The estimate treats every month as the same. Tax, debt, supplier deposits, seasonal stock buys, payout delays, and one-off payments can shorten the runway.
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Stop rebuilding the same calculation every week.
Nummbas brings sales, costs, products, ads, and cash flow into one view so the numbers change when the business does.