CAC Calculator · free, no spam
CAC Calculator · free, no spam
The diagnostic your CFO will keep. Timing-aligned methodology, peer benchmarks by ARR tier, and the only public calculator that models the CAC reduction from agentic AI deployment.
Your CAC of $15,000 is 18% above the $10M to $40M ARR mid-market median.
Per-customer cumulative cash position from acquisition through month 24. Breakeven is where the cohort turns profitable.
| Channel | Spend | Customers | CAC |
|---|---|---|---|
| Paid (Google + LinkedIn) | ... | ||
| Outbound (SDR + cold email) | ... | ||
| Organic (SEO + content) | ... | ||
| Partner / Co-marketing | ... | ||
| Referral | ... |
Tick or untick hidden cost categories above to see the gap.
Which lever moves your CAC payback the most. Ranked by months saved per 10% improvement.
| Metric | Series A | Series B | Series C | IPO-track | You |
|---|
No other CAC calculator models this. Across 2025 to 2026 evidence, agentic deployment across the 4 Pillars compresses CAC by 30% to 50% in fully-implemented programmes. Select the Pillars to deploy.
Customer Acquisition Cost is the fully-loaded sales and marketing investment required to win one new customer. For B2B SaaS at $10M to $40M ARR, CAC is the single most-watched unit economics input in board reviews.
A rising CAC compresses runway. A falling CAC accelerates Rule of 40 compliance and unlocks expansion capital. Above all else, your CFO and board members will be tracking this.
The above is basic CAC. World-class operators run three additional refinements: timing alignment (matching spend to the preceding 134-day sales cycle), New vs Blended Ratio split, and a hidden cost audit. All three are available in Mode 2 and Mode 3 of this calculator.
The right answer depends on ARR tier and ACV segment. The post-2023 efficiency reset has tightened acceptable CAC payback significantly.
| ARR Tier | Median CAC Payback | Median LTV:CAC | Diligence Yellow Flag |
|---|---|---|---|
| Sub-$1M ARR | 21 months | 2.4x | over 24 months |
| $1M to $10M ARR | 16 months | 3.1x | over 18 months |
| $10M to $50M ARR | 13 months | 3.6x | over 14 months |
| $50M+ ARR | 11 months | 4.2x | over 12 months |
| Public SaaS | 9 months (75th pct) | 4.7x | over 13 months |
No other CAC calculator models this. Across 2025 to 2026 evidence from Landbase, PromptPartner, Martal, MatrixLabX, and DigitalApplied, agentic deployment across the 4 Pillars of GTM compresses CAC by 30 to 50% in fully-deployed programmes. Outbound CAC alone falls up to 70% with AI SDR plus speed-to-lead automation.
| Pillar Deployment | CAC Reduction Range | Source Evidence |
|---|---|---|
| Pillar 1 · Agentic outbound + AI SDR | 40 to 70% on outbound CAC | Landbase, PromptPartner, Martal 2026 |
| Pillar 1 · AI content production | 6 to 15% on content-line CAC | MarketBetter, Improvado 2026 |
| Pillar 2 · Nurture + proposal automation | 15 to 25% on conversion CAC | PromptPartner, DigitalApplied 2026 |
| Pillar 3 · Pre-sale CS automation | 10 to 20% on blended CAC | DigitalApplied 2026 |
| Pillar 4 · RevOps + routing AI | 10 to 15% on blended CAC | MatrixLabX, BenchmarkIt 2025 |
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Divide total sales and marketing spend for a period by the number of new customers acquired in that period. For accurate results, match S&M spend to the period preceding new customers by the length of your sales cycle (134 days median for B2B SaaS in 2026). Include fully-loaded costs: salaries, commissions, tools, overhead, content amortisation.
For B2B SaaS in 2026, excellent CAC is under $150 per customer for SMB segments. For mid-market ($15K to $100K ACV), CAC payback under 14 months is the benchmark. For enterprise ($100K+ ACV), CAC up to $5,000 is acceptable if LTV:CAC stays above 3:1. Median CAC payback across B2B SaaS is 15 months.
The accepted standard is 3:1 (three dollars of lifetime value per dollar of acquisition cost). For $10M to $50M ARR SaaS, the median is 3.6x. Above 4:1 is excellent but may signal underinvestment in growth. Below 2:1 indicates immediate intervention is required.
CAC payback is the number of months required to recover acquisition cost from a customer. Formula: CAC divided by (Monthly ARPU × Gross Margin). 2026 benchmark for $10M to $50M ARR SaaS is 13 months median. Series B and C investors treat payback over 14 months as a yellow flag, over 18 months as red.
Agentic deployment across the GTM stack reduces CAC by 30 to 50% in fully-deployed programmes. Sources include up to 70% lower outbound CAC from AI SDR (Landbase 2026), 40 to 50% reduction from speed-to-lead automation (PromptPartner), 10 to 20% reduction from pre-sale CS automation (DigitalApplied).
Six categories most commonly omitted: sales engineering, pre-sale customer success, content amortised over its useful life, sales training and enablement, T&E for sales teams, and overhead allocation. Including these typically raises reported CAC by 20 to 40%.
New CAC Ratio measures S&M spend against New Customer ARR only. Blended CAC Ratio includes both new and expansion ARR. The median New CAC Ratio rose 14% in 2024 to $2.00 per $1 of new ARR. Companies with strong expansion motions show healthier blended metrics despite tough new-logo economics.
We diagnose the exact Pillar deployment sequence that compresses your CAC by 30 to 50% in two quarters. One call, one outcome. Either we map your deployment, or we tell you exactly who to hire instead.