How to use this calculator
Enter opening cash, MRR, monthly expenses, and annual prepaid revenue. The calculator converts prepaid revenue to a monthly cash contribution and estimates burn and runway.
#738 · Business Tool
SaaS Cash Flow Calculator
Use this SaaS Cash Flow Calculator to estimate monthly net cash flow, burn rate, runway, and ending cash. It helps SaaS founders understand how long current cash can support growth and operations.
Calculator
Business inputs$
$
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Ad space
What the result means
Runway shows how many months the business can operate at the current burn rate. Positive cash flow means runway pressure is lower.
Cash inflow = MRR + prepaid revenue ÷ 12. Net cash flow = inflow − expenses. Runway = opening cash ÷ monthly burn.
Prepaid annual revenue improves cash timing but does not always equal monthly revenue recognition.
Example calculation
With $500,000 cash, $60,000 MRR, $100,000 expenses, and $120,000 prepaid revenue, monthly inflow is $70,000 and burn is $30,000.
Tips for better results
- Extend runway before fundraising pressure appears.
- Reduce burn multiple by improving net new ARR.
- Use prepaid plans carefully for cash timing.
FAQ
What is a good SaaS runway?
More than 12 months is generally safer, while less than 6 months creates funding risk.
How do I calculate burn rate?
Subtract cash inflow from monthly expenses. If expenses exceed inflow, the difference is burn.
What is burn multiple?
Burn multiple compares cash burned to net new ARR and shows capital efficiency.
How much cash should a startup keep?
A startup should keep enough cash to fund operations, growth experiments, and unexpected delays.
How do I extend runway?
Reduce burn, increase MRR, collect prepaid revenue, slow hiring, or improve pricing.
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SaaS and service modules
| Module | Included |
|---|---|
| Main Result | Yes |
| Summary | Yes |
| Interpretation | Yes |
| Status | Yes |
| Health Score | Yes |
| Automatic Recommendation | Yes |
| Industry Benchmark | Yes |
| Example Calculation | Yes |
| FAQ 5 | Yes |
| Related Calculators 4 | Yes |
| Internal Link Cluster | Yes |
| SaaS KPI | Yes |
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