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Cac Ltv Calculator
CAC'ı geri kazanmak için gereken brüt kârlı gelir ay sayısı.
Edinme maliyeti, değere göre yüksek. Elde tutma veya marjı iyileştirin.
- < 1x — her müşteride zarar ediliyor
- 1–3x — zor durumda, birim ekonomisi sağlıksız
- 3–5x — sağlıklı SaaS hedefi
- > 5x — muhtemelen büyümeye yetersiz yatırım yapılıyor
LTV/CAC ratio is the single most-watched unit-economics metric for SaaS and subscription businesses. Customer Acquisition Cost (CAC): total sales + marketing spend divided by new customers acquired in the same period. Lifetime Value (LTV): total gross profit a customer generates across their entire relationship — calculated as ARPU (Average Revenue Per User) × Gross Margin × Customer Lifetime (months, typically 1 / monthly churn rate). The ratio LTV/CAC tells you whether you're building a sustainable business: under 1 means you lose money on every customer (existential problem); 1-2 is concerning; 3+ is healthy; 5+ may suggest under- investing in growth (you could spend more on acquisition and still profit). Most successful SaaS companies maintain 3-5x LTV/CAC during growth stage, with the ratio compressing as scale increases.
The calculator takes CAC (blended sales + marketing per customer), monthly ARPU, gross margin %, and either explicit customer lifetime in months OR monthly churn rate (lifetime = 1/churn), then outputs LTV, LTV/CAC ratio, and tier assessment. Example: $500 CAC, $50/mo ARPU, 75% gross margin, 24-month customer lifetime → LTV = $50 × 0.75 × 24 = $900; LTV/CAC = $900 / $500 = 1.8x. Concerning ratio — you're recouping CAC but not building substantial profit per customer. Improving this ratio: lower CAC (better marketing efficiency), raise ARPU (pricing increases, expansion), reduce churn (better retention extending lifetime), or improve margin (cost optimization).
Sophistication beyond the basic ratio: (1) Use ACTUAL gross margin, not GAAP gross margin. Include hosting costs, payment processing fees, customer-success-team costs allocated proportionally, third-party data costs, support costs. Many SaaS calculations use 80% margin assumption when true gross margin is 65-70%. (2) Consider NPV-discounted LTV at scale. A customer contributing $100/month for 5 years isn't worth $6,000 today — discount at your cost of capital (15-20% for early-stage; 8-12% for mature). (3) Cohort-level analysis beats average. Average LTV/CAC of 3x might mask: 5x LTV/CAC for enterprise + 1x for SMB. Decide where to grow based on cohort economics, not blended numbers. (4) Bessemer SaaS benchmarks: top quartile maintains LTV/CAC above 5x; median around 3x; concerning below 1.5x. (5) Pair with CAC payback period (months to recover CAC from gross profit). LTV/CAC tells you if customers are profitable; payback tells you how fast capital recycles. Both matter for healthy unit economics.
Nasıl Kullanılır
- Enter blended CAC (total S&M spend / new customers in same period).
- Enter ARPU (Average Revenue Per User per month).
- Enter gross margin % (true margin including hosting, processing, support — typically 65-80% for SaaS).
- Enter customer lifetime in months OR monthly churn rate (lifetime = 1/churn).
- Read LTV, LTV/CAC ratio, and tier assessment vs benchmarks.
Ne Zaman Kullanılır
- Investor pitch decks — LTV/CAC is one of the headline unit-economics numbers.
- Quarterly board reporting — assessing trajectory of growth quality.
- Comparing customer segments — SMB vs enterprise often have very different ratios.
- Pricing decisions — modeling how price increases affect ratio.
- Marketing budget approval — justifying acquisition spend with healthy LTV/CAC math.
Ne Zaman Kullanılmaz
- Single-month or very small samples — CAC and LTV are stable only with sufficient cohort data (100+ customers, 6+ months).
- One-time-purchase businesses — LTV concept doesn't apply cleanly; use CAC vs first-purchase value or repeat-purchase economics.
- Marketplace / transactional businesses — different unit-economics framework needed.
- Brand new products — early CAC is artificially high (Google Ads always starts inefficient); wait for stabilization.
Yaygın Kullanım Senaryoları
- Onboarding a colleague who needs the same calculation/conversion
- Verifying a number or output before passing it on
- Quick calculation during a typical workday
- Pre-decision sanity-check on inputs and outputs
Sık Sorulan Sorular
What's a healthy LTV/CAC?
3-5x is the healthy zone. Below 1x: losing money on every customer (urgent fix). 1-2x: concerning, may indicate broken unit economics. 3-5x: healthy, growth-friendly. Above 5x: may suggest under-investment in growth (you could spend more on acquisition and still profit). Bessemer Venture Partners SaaS benchmarks: top quartile 5x+; median 3x; concerning below 1.5x. Track over time — direction matters as much as level.
How do I calculate LTV correctly?
LTV = ARPU × Gross Margin × Customer Lifetime. ARPU: monthly recurring revenue per user. Gross margin: include all customer-cost-of-goods (hosting, processing, support, third-party data, allocated CS team costs) — typically 65-80% true margin for SaaS, lower than the 90% some calculators assume. Customer lifetime: 1 / monthly churn rate. So 5% monthly churn = 20-month lifetime. LTV represents gross profit per customer across their entire tenure.
Should I use gross or net LTV?
Gross LTV (revenue × margin × lifetime) is the standard for unit-economics analysis. Net LTV (subtract ongoing customer costs from gross) gets used in some contexts but is harder to allocate. Most reported LTV/CAC ratios use gross. Be consistent across reporting periods; don't mix gross and net.
What if my LTV/CAC is too high?
Counter-intuitively a problem. LTV/CAC of 8x might mean you're leaving growth on the table — could spend 2-3x more on acquisition while still maintaining healthy ratio. Top-of-funnel constraints (limited market reach, brand awareness gaps) often hold back companies with high ratios. Test whether you can scale acquisition spend before the ratio drops below 3x. Many investors look for 3-5x as the sweet spot of efficient growth.
How do I improve LTV/CAC?
Four levers: (1) Reduce CAC — better marketing efficiency (organic channels, referrals, content, SEO), reduce sales overhead per close, target higher-converting segments. (2) Increase ARPU — pricing increases, premium tiers, add-ons, expansion. (3) Reduce churn — improve onboarding, customer success investment, fix product gaps. (4) Improve gross margin — cost optimization, scale efficiencies, automation. Pricing is often the highest-leverage; small increases flow mostly to margin without affecting CAC.
How does this differ from CAC payback?
LTV/CAC: total profit per customer relative to acquisition cost (long-term economic question). CAC payback: months to recover CAC from gross profit (short-term capital recycling question). Both matter. Healthy: 3-5x LTV/CAC + 12-24 month payback. LTV/CAC alone might be high but with very long payback (capital tied up too long). Payback alone might be short but with low LTV/CAC (you recover quickly but don't make much). Track both for full picture.