afrexai-cac-optimizer
// Analyze, benchmark, and reduce your customer acquisition cost across every channel.
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updated:March 4, 2026
SKILL.mdreadonly
Customer Acquisition Cost (CAC) Optimizer
Analyze, benchmark, and reduce your customer acquisition cost across every channel.
What This Does
- Calculates true CAC (fully loaded — not just ad spend)
- Breaks down CAC by channel, segment, and cohort
- Benchmarks against industry standards
- Identifies the cheapest acquisition paths
- Models payback period and LTV:CAC ratio
- Generates a CAC reduction roadmap
How to Use
Tell your agent:
- "Calculate our CAC for last quarter"
- "Break down acquisition cost by channel"
- "What's our LTV:CAC ratio?"
- "Build a plan to cut CAC by 30%"
CAC Calculation Framework
True CAC Formula (Fully Loaded)
CAC = (Sales Costs + Marketing Costs + Overhead Allocation) / New Customers Acquired
Include:
- Ad spend (paid search, social, display)
- Content production costs
- Sales team comp (base + commission + benefits)
- Marketing team comp
- Tools & software (CRM, analytics, ad platforms)
- Agency/contractor fees
- Event/sponsorship costs
- Allocated overhead (office, IT, management time)
Exclude:
- Customer success / retention costs (that's your retention CAC)
- Product development
- General admin not tied to acquisition
CAC by Channel
| Channel | Typical B2B SaaS CAC | Typical B2C CAC | Payback Period |
|---|---|---|---|
| Organic Search (SEO) | $200-$500 | $15-$50 | 6-12 months |
| Content Marketing | $300-$800 | $20-$80 | 8-14 months |
| Paid Search (Google) | $500-$2,000 | $30-$150 | 3-8 months |
| Paid Social (LinkedIn) | $800-$3,000 | $40-$200 | 4-10 months |
| Paid Social (Meta) | $300-$1,500 | $10-$80 | 2-6 months |
| Email / Nurture | $100-$400 | $5-$30 | 1-4 months |
| Referral Program | $150-$600 | $10-$50 | 1-3 months |
| Partner / Channel | $400-$1,200 | N/A | 3-6 months |
| Outbound Sales | $2,000-$8,000 | N/A | 6-18 months |
| Events / Conferences | $1,500-$5,000 | N/A | 6-12 months |
Industry Benchmarks (2026)
| Industry | Median CAC | Good | Great | LTV:CAC Target |
|---|---|---|---|---|
| B2B SaaS (SMB) | $1,200 | <$800 | <$400 | 3:1+ |
| B2B SaaS (Mid-Market) | $5,500 | <$4,000 | <$2,500 | 3:1+ |
| B2B SaaS (Enterprise) | $15,000 | <$12,000 | <$8,000 | 5:1+ |
| Ecommerce (DTC) | $45 | <$30 | <$15 | 3:1+ |
| Fintech | $3,500 | <$2,500 | <$1,500 | 4:1+ |
| Healthcare SaaS | $6,000 | <$4,500 | <$3,000 | 4:1+ |
| Professional Services | $2,000 | <$1,500 | <$800 | 5:1+ |
| Construction Tech | $4,000 | <$3,000 | <$2,000 | 4:1+ |
LTV:CAC Health Check
| Ratio | Status | Action |
|---|---|---|
| <1:1 | 🔴 Burning cash | Stop spending. Fix product-market fit or pricing. |
| 1:1 - 2:1 | 🟡 Unsustainable | Optimize channels. Cut worst performers. |
| 3:1 | 🟢 Healthy | Standard target. Keep optimizing. |
| 4:1 - 5:1 | 🟢 Strong | Consider investing more in growth. |
| >5:1 | 🔵 Under-investing | You're leaving growth on the table. Spend more. |
Payback Period
Payback Period (months) = CAC / (Monthly Revenue per Customer × Gross Margin %)
Target by stage:
- Seed/Series A: <18 months
- Series B+: <12 months
- Profitable company: <6 months
CAC Reduction Playbook
Quick Wins (30 days)
- Kill underperforming channels — Bottom 20% of channels by CAC efficiency → pause immediately
- Tighten ICP targeting — Narrow ad audiences to best-fit segments (often cuts CAC 20-40%)
- Optimize landing pages — A/B test headlines, CTAs, form length (10-30% conversion lift)
- Activate referral program — Existing customers are your cheapest channel ($150-$600 vs $2K+ outbound)
- Fix lead scoring — Sales time on bad leads = wasted CAC. Score ruthlessly.
Medium-Term (90 days)
- Build content moat — SEO compounds. Every ranking page reduces future CAC
- Automate nurture sequences — Drip campaigns convert leads without sales time
- Partner channel deals — Revenue share with complementary products
- Product-led growth hooks — Free tier, trials, freemium → organic conversion
- Retargeting optimization — 70% cheaper than cold acquisition
Strategic (6+ months)
- Brand building — Strong brand = lower CAC across every channel
- Community — User communities generate organic referrals
- Product virality — Built-in sharing, team invites, network effects
Cohort Analysis Template
For each acquisition cohort (monthly):
- Cohort size (new customers)
- Total acquisition spend
- CAC per customer
- Month 1 revenue
- Month 3 cumulative revenue
- Month 6 cumulative revenue
- Month 12 cumulative revenue
- LTV at 12 months
- LTV:CAC at 12 months
- Payback month achieved (Y/N, which month)
- Retention rate at 12 months
Flag: Any cohort where LTV:CAC < 2:1 at 12 months
Output Format
Present results as:
- CAC Summary — Overall CAC, trend (up/down), LTV:CAC ratio
- Channel Breakdown — Table ranked by efficiency (best CAC first)
- Benchmark Comparison — How you stack up vs industry
- Top 3 Reduction Opportunities — Specific, actionable, with estimated impact
- 90-Day Roadmap — Prioritized actions with expected CAC reduction %
Built by AfrexAI — AI context packs for business operations ($47/pack)
More tools:
- AI Revenue Calculator — Find where you're losing money
- Agent Setup Wizard — Deploy AI agents in minutes
- Context Pack Store — Industry-specific AI agent configs