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SaaS Churn & Burn Radar

SaaS Churn & Burn Radar turns churn, CAC, and operating burn into a clear cash-runway forecast. It models how many customers you lose each month, how many you add, and how that compounds into MRR, gross profit, and cash. Use it to see the month when cash hits zero, the churn impact on MRR, and the net cash flow that dictates survival. This is ideal for founders planning hiring, pricing, or acquisition spend and for finance leads who need a quick view of how growth bends under churn pressure. All calculations run client-side, so your numbers stay private while you stress-test scenarios in seconds. Method details for SaaS Churn & Burn Radar: The result model exposes each formula and equation, applies deterministic calculation steps, uses explicit decimal rounding, and keeps unit assumptions visible so outputs are auditable.

Inputs

Advanced Settings

Revenue growth from upsells/cross-sells on existing customers. Offsets churn. Top SaaS: 2-5%.

Expected monthly increase in operating burn (hiring, infrastructure scaling).

Monthly change in new customer acquisition rate. Positive = accelerating, negative = decelerating.

All calculations run locally in your browser.

Results Snapshot

Survival Runway

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Churn & Burn Score

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Monthly Net Cash Flow

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MRR Lost to Churn

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Customer LTV

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CAC Payback (months)

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LTV:CAC Ratio

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Annual Net Revenue Retention

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MRRCash

Projected over the selected horizon.

Disclaimer: This calculator provides simplified projections for planning purposes. Actual SaaS metrics are influenced by seasonality, market conditions, pricing changes, and competitive dynamics. LTV assumes constant churn rate. Consult your finance team for detailed financial modeling.

How to Use This SaaS Churn & Burn Calculator

  1. Enter starting cash, current MRR, and ARPA to estimate active customers.
  2. Add churn rate, gross margin, operating burn, and CAC assumptions.
  3. Set the projection horizon and run the forecast to see survival date and score.
  4. Review the MRR and cash trajectories to judge whether growth compounds or leaks.

Why This Model Works

Churn compounds silently; translating it into cash impact helps teams course-correct early. This model rolls forward customers monthly and converts churn into revenue loss so runway planning stays grounded.

By combining churn, CAC, and operating burn in one timeline, you can compare growth strategies on equal footing and align pricing, hiring, and acquisition targets before the runway narrows.