Customer Acquisition Cost (CAC) Optimizer

Analyze, benchmark, and reduce your customer acquisition cost across every channel.

modbender Updated Sep 9, 2026 12 repo stars

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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

---name: customer-acquisition-cost-cac-optimizerdescription: Analyze, benchmark, and reduce your customer acquisition cost across every channel.--- # 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) 1. **Kill underperforming channels** — Bottom 20% of channels by CAC efficiency → pause immediately 2. **Tighten ICP targeting** — Narrow ad audiences to best-fit segments (often cuts CAC 20-40%) 3. **Optimize landing pages** — A/B test headlines, CTAs, form length (10-30% conversion lift) 4. **Activate referral program** — Existing customers are your cheapest channel ($150-$600 vs $2K+ outbound) 5. **Fix lead scoring** — Sales time on bad leads = wasted CAC. Score ruthlessly. ### Medium-Term (90 days) 6. **Build content moat** — SEO compounds. Every ranking page reduces future CAC 7. **Automate nurture sequences** — Drip campaigns convert leads without sales time 8. **Partner channel deals** — Revenue share with complementary products 9. **Product-led growth hooks** — Free tier, trials, freemium → organic conversion 10. **Retargeting optimization** — 70% cheaper than cold acquisition ### Strategic (6+ months) 11. **Brand building** — Strong brand = lower CAC across every channel 12. **Community** — User communities generate organic referrals 13. **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: 1. **CAC Summary** — Overall CAC, trend (up/down), LTV:CAC ratio 2. **Channel Breakdown** — Table ranked by efficiency (best CAC first) 3. **Benchmark Comparison** — How you stack up vs industry 4. **Top 3 Reduction Opportunities** — Specific, actionable, with estimated impact 5. **90-Day Roadmap** — Prioritized actions with expected CAC reduction % --- *Built by [AfrexAI](https://afrexai-cto.github.io/context-packs/) — AI context packs for business operations ($47/pack)* **More tools:** - [AI Revenue Calculator](https://afrexai-cto.github.io/ai-revenue-calculator/) — Find where you're losing money - [Agent Setup Wizard](https://afrexai-cto.github.io/agent-setup/) — Deploy AI agents in minutes - [Context Pack Store](https://afrexai-cto.github.io/context-packs/) — Industry-specific AI agent configs

modbender/skill-library-mcp/tree/main/data/afrexai-cac-optimizer commit dcbdec60b2

Frequently asked questions

npx skillmds@latest add modbender/customer-acquisition-cost-cac-optimizer