Skip to main content
Calkulon

SaaS Unit Economics Nasıl Hesaplanır?

learn.whatIsHeading

The SaaS Unit Economics Calculator computes the four most-watched financial health metrics for SaaS businesses: LTV/CAC ratio (customer lifetime value vs acquisition cost), CAC Payback Period (months to recover acquisition spend), Magic Number (sales & marketing efficiency), and Burn Multiple (capital efficiency relative to ARR growth). These metrics are the standard framework VCs use to evaluate SaaS investments and what operators use to gauge whether their go-to-market is healthy.

Formül

LTV = ARPU × Gross Margin / Monthly Churn; LTV/CAC = LTV / CAC; CAC Payback = CAC / (ARPU × Gross Margin); Magic Number = (New ARR × 4) / (Prior Quarter S&M × 3); Burn Multiple = Net Burn / Net New ARR
CAC
Customer Acquisition Cost (currency) — Total S&M spend / new customers acquired
LTV
Customer Lifetime Value (currency) — Expected gross-margin revenue from a customer over their lifetime

Adım Adım Kılavuz

  1. 1Enter CAC (Customer Acquisition Cost) — total sales & marketing spend divided by new customers
  2. 2Enter ARPU (Average Revenue Per User) monthly
  3. 3Enter Gross Margin % (typically 70-85% for SaaS)
  4. 4Enter monthly churn % (typical 2-5% for SMB SaaS, 0.5-2% for enterprise)
  5. 5For Magic Number and Burn Multiple, enter quarterly New ARR, S&M spend, and net burn
  6. 6Calculator computes LTV using simple formula: ARPU × Gross Margin / Monthly Churn
  7. 7Each metric has health benchmarks color-coded: excellent (green), good (lime), concerning (orange), poor (red)

Çözümlü Örnekler

Giriş
CAC $500, ARPU $50/mo, 80% margin, 3% monthly churn
Sonuç
LTV $1,333, LTV/CAC 2.67x (good), CAC Payback 12.5 months (good)
Giriş
CAC $2,000, ARPU $200/mo, 85% margin, 1% churn
Sonuç
LTV $17,000, LTV/CAC 8.5x (excellent), CAC Payback 11.8 months (excellent)
Giriş
CAC $1,500, ARPU $30/mo, 75% margin, 5% churn
Sonuç
LTV $450, LTV/CAC 0.30x (unprofitable!), CAC Payback 67 months (very poor)

Kaçınılması Gereken Yaygın Hatalar

  • ✕Using simple LTV formula when churn is high — formula breaks down above 5% monthly churn; use cohort retention curves instead
  • ✕Confusing CAC payback with CAC payback time — payback months counts only when customer revenue equals CAC
  • ✕Forgetting to include all S&M costs — must include marketing tools, sales tools, payroll, commissions, ad spend
  • ✕Reporting blended CAC instead of paid CAC — organic acquisitions skew CAC artificially low

Sık sorulan sorular

What's a good LTV/CAC ratio?

Industry standard: 3x is healthy, 5x+ is excellent, below 1x means losing money on each customer. Most SaaS companies should target 3-4x — going much higher often means under-investing in growth.

How is Magic Number interpreted?

>1 = scale aggressively (S&M is highly efficient). 0.5-1.0 = scale carefully. <0.5 = fix product-market fit before scaling. The metric was popularized by Scale Venture Partners and is now standard at most SaaS VCs.

What's a healthy burn multiple?

Best: <1 (capital-efficient growth). Good: 1-2. Suspect: 2-3. Bad: >3 (burning capital without commensurate ARR growth). Top SaaS startups achieve <1; many established companies operate at 1-2.

Hesaplamaya hazır mısınız? Ücretsiz SaaS Unit Economics Hesaplayıcıyı deneyin

Kendiniz deneyin →

Ayarlar

GizlilikKoşullarHakkında© 2026 Calkulon