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Commercial Open Source (COSS) Runway, Burn Rate & Default Alive Calculator
Calculate cash runway in months, net monthly burn, burn multiple, and Paul Graham 'Default Alive' status for your Commercial Open Source (COSS) startup.
Interactive Studio
Step 1 · Configure Inputs
Your Metrics & Parameters
Adjust values or drag sliders — outputs recalculate live.
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Engine Methodology
Static Runway = Cash ÷ (Expenses - Revenue) · Dynamic Runway compounds MoM revenue growth against burn
Top-Quartile Benchmark
Projected Startup Runway
Default Alive (∞)
With $34,000 monthly revenue compounding at 8.0%/mo against $49,300 opex, your startup reaches cash-flow break-even before exhausting $476,000 in reserves (Default Alive).
Current Net Burn / Mo
$15,300
$49,300 opex − $34,000 revenue
Static Zero-Growth Runway
31.1 mos
Cash ÷ current net burn
Growth-Adjusted Runway
Default Alive (∞)
Includes 8.0% MoM revenue growth
Burn Multiple
5.63x
Net burn ÷ net new ARR added
Next Step for Founders
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Used by 1,240+ SaaS & AI founders for organic traffic and AI citations.
2026 Reference Data
Industry benchmarks. How your saas & startup finance metrics compare.
| Benchmark Metric | 2026 Standard | Founder Context |
|---|---|---|
| Top-Quartile B2B SaaS LTV:CAC | 4.0x – 6.5x | 3.0x is the standard venture & bootstrapped threshold. |
| Median CAC Payback Period | 6 – 14 months | PLG and self-serve products target < 6 months. |
| Healthy Net Revenue Retention (NRR) | 105% – 125% | Expansion revenue offsets gross logo churn. |
How to use this tool. Three steps from raw inputs to founder-ready output.
- 01
Enter your startup metrics or copy inputs
Fill in the fields in the Commercial Open Source (COSS) Runway, Burn Rate & Default Alive Calculator workspace above, or click "Load Example" to populate verified saas & startup finance benchmark data.
- 02
Review real-time calculations & benchmark grades
Inspect the primary output, supporting unit metrics, and diagnostic rules that update instantaneously in your browser with zero server round-trips.
- 03
Copy the report or deploy your launch plan
Click 'Copy Result' to export the clean Markdown output or code snippet, then launch your product on FoundrList to compound organic traffic and high-DR backlinks.
Formula & methodology. Transparent math with zero black-box assumptions.
Core Calculation
Static Runway = Cash ÷ (Expenses - Revenue) · Dynamic Runway compounds MoM revenue growth against burn
With default 2026 baseline inputs, the Commercial Open Source (COSS) Runway, Burn Rate & Default Alive Calculator produces Default Alive (∞) (Projected Startup Runway). With $34,000 monthly revenue compounding at 8.0%/mo against $49,300 opex, your startup reaches cash-flow break-even before exhausting $476,000 in reserves (Default Alive).
Questions, answered.
Calculate cash runway in months, net monthly burn, burn multiple, and Paul Graham 'Default Alive' status for your Commercial Open Source (COSS) startup. All calculations, scoring rules, and templates run 100% client-side in your browser for instant feedback without sending private startup metrics to a server.
The Commercial Open Source (COSS) Runway, Burn Rate & Default Alive Calculator uses current 2026 SaaS, indie hacker, and venture benchmarks across B2B SaaS, AI products, developer tools, and bootstrapped startups so you can compare your numbers against top-quartile performers.
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Best valueFeature for 30 days
30-Day Featured
A full month at the top of the home page. Live today.
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One-time payment · or $79/month, cancel anytime
- 30 days at the top of the home page
- Everything in Standard Launch
- Priority support
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