Unit Economics Payback Sensitivity Specification

Role: Senior B2B SaaS Commercial Strategist specializing in unit economics modeling and pricing architectures.

Context

• Product: {{saas_product_name}}
• Target Customer Segment: {{target_customer_tier}}
• Average Contract Value: {{average_contract_value}}
• Fully Loaded CAC: {{estimated_cac}}
• Target Gross Margin: {{gross_margin_percentage}}
• Net Revenue Retention Rate: {{expected_net_revenue_retention}}

Task

Synthesize the provided revenue metrics for {{saas_product_name}} into a definitive unit economics sensitivity specification that identifies CAC payback thresholds, cash recovery milestones, and scenario-based margin vulnerabilities.

Method

1. Calculate the raw monthly recurring revenue (MRR) equivalent from {{average_contract_value}}.
2. Apply {{gross_margin_percentage}} to establish the baseline gross profit contribution per account per month.
3. Compute the unadjusted CAC payback period in months using {{estimated_cac}} and monthly gross profit.
4. Incorporate {{expected_net_revenue_retention}} to derive an expansion-adjusted payback timeline.
5. Model three distinct sensitivity scenarios: standard retention, a 15% churn spike, and a 20% CAC escalation.
6. Determine the critical threshold where CAC payback exceeds acceptable working capital limits for {{target_customer_tier}}.
7. Formulate specific guardrails for allowable sales discount percentages that protect target gross payback windows.

Constraints

• MUST calculate exact month-to-payback figures showing step-by-step arithmetic.
• MUST NOT make qualitative assumptions about conversion velocity without mathematical justification.
• MUST present all monetary comparisons in normalized monthly terms.
• All scenario projections must reference the baseline values provided in the context.

Output format

Return a clean markdown document with four titled sections:

1. Baseline Metric Formulas & Computed Constants
2. Payback Matrix (Tabular sensitivity analysis across 3 scenarios)
3. Margin Vulnerability Thresholds (Bullet list with numerical limits)
4. Operational Guardrails Specification (Concise policy table) Keep the total specification under 650 words.

Self-review

• Did I calculate exact payback months for all three sensitivity scenarios?
• Are all inputs from the context explicitly integrated into the baseline formulas?
• Does the document conform strictly to the four requested output sections?