Check cash reserves, expected payments and upcoming expenses to estimate any shortfall. Start with a completed job sheet, supplier quotes and a crew schedule. Each example below uses hypothetical values you can replace.
Which calculator should you use?
| Tool | What it answers | What to check |
|---|---|---|
| Days of Operating Cash | Translate cash on hand into days of average operating payments. | This excludes future receipts and uses historical average payments, so it differs from net-burn runway. |
| Cash Runway | Estimate the time until cash is exhausted under constant net burn. | Profit recognition and payment dates differ. Use cash receipts and payments here, not invoice revenue alone. |
These tools answer different questions and may use different units. Choose the tool that measures what you need; a larger result does not necessarily mean a better outcome.
Days of Operating Cash
Translate cash on hand into days of average operating payments.
Cash days = cash / (period payments / period days)
Show example inputs and result
| Available unrestricted cash | 24,000 |
|---|---|
| Operating payments in period | 36,000 |
| Days in period | 90 |
Result: 60 days.
This excludes future receipts and uses historical average payments, so it differs from net-burn runway.
Open days of operating cashCash Runway
Estimate the time until cash is exhausted under constant net burn.
Runway = available cash / (outflow − inflow)
Show example inputs and result
| Available unrestricted cash | 50,000 |
|---|---|
| Monthly cash outflow | 20,000 |
| Monthly cash inflow | 15,000 |
Result: 10 months.
Profit recognition and payment dates differ. Use cash receipts and payments here, not invoice revenue alone.
Open cash runwayUse the results in your plan
For a commercial janitorial business, review shift staffing, supplies, and supervision across the complete workflow. Use one consistent period and delivery unit: a contract visit. Compare the assumptions with recorded outcomes after delivery, then update the estimate.
Explore all relevant commercial janitorial calculators