B2B SaaS Funnel & Unit Economics

Calculate your B2B SaaS unit economics and visualize your marketing funnel. Compare key metrics like LTV & CAC against industry benchmarks.

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LTV

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CAC

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LTV/CAC Ratio

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Tips to Improve Each Metric

Marketing Team / Agency Costs

Reduce without losing output

  • →Start with a fractional CMO or growth agency before committing to full-time hires.
  • →Track cost-per-qualified-lead per channel to justify where headcount adds real value.
  • →Invest in content and SEO early to reduce long-term dependency on paid channels.

Investment in Paid Media Ads

Spend smarter, not more

  • →Run small A/B tests on creatives and copy before scaling any campaign budget.
  • →Pause channels where CAC exceeds LTV immediately — don't wait for month-end reviews.
  • →Reinvest at least 10–15% of MRR back into paid acquisition once you find a channel that works.

CPC — Cost Per Click

Lower cost, same quality

  • →Improve ad relevance and Quality Score on Google — a higher score directly lowers your CPC.
  • →Target long-tail keywords with lower competition and higher intent.
  • →Retargeting campaigns typically have 2–3× lower CPC than cold-audience campaigns.

Invalid Clicks Rate

Protect your ad budget

  • →Use IP exclusion lists in Google Ads to block known bots and competitor IPs.
  • →Enable a click-fraud protection tool (e.g., ClickCease, TrafficGuard) to automate filtering.
  • →Review placement reports regularly and exclude bot-heavy display and content networks.

Organic Visitors

Build a free traffic engine

  • →Create SEO content targeting high-intent queries like "best [category] software for [ICP]".
  • →List your product on directories like G2, Capterra, and Product Hunt to earn backlinks and referrals.
  • →Optimize Core Web Vitals and page speed — technical SEO has compounding returns.

Visitor → Trial Conversion Rate

Turn more visitors into leads

  • →Add social proof (customer logos, testimonials, case study numbers) above the fold.
  • →Reduce signup friction: fewer form fields and remove the credit card requirement from trials.
  • →Use exit-intent overlays with a targeted offer for visitors who are about to leave.

Trial → Paid Conversion Rate

Convert more free users to paying

  • →Send a targeted onboarding email sequence in the first 7 days guiding users to their "aha moment".
  • →Offer a live demo or success call before the trial expires for high-intent accounts.
  • →Add in-app upgrade prompts triggered when users hit a trial limit or reach a value milestone.

Average MRR per Customer

Increase revenue per seat

  • →Introduce higher pricing tiers with features your best customers are already asking for.
  • →Add usage-based upsells: more seats, API calls, storage, or advanced integrations.
  • →Offer annual plan discounts — they increase upfront cash and signal commitment from customers.

Average Paid Months per Customer

Keep customers longer

→Build a proactive customer success program — reach out to at-risk accounts before they churn.
→Track and shorten time-to-value: the faster users succeed, the less likely they are to leave in month 1.
→Run quarterly business reviews with high-value customers to reinforce ROI and surface expansion opportunities.

Mastering SaaS Unit Economics

Building a sustainable B2B SaaS business requires more than just a great product; it requires a math equation that works. This calculator helps you visualize your marketing funnel and understand the unit economics that determine your startup's viability.

The Funnel: Traffic to Revenue

Traffic Sources & Conversion

Your growth engine starts with Visitors. We separate Paid (Ads) from Organic traffic because they have different costs. The efficiency of your funnel is measured by conversion rates: Visitor-to-Trial and Trial-to-Paid. Small improvements here compound significantly over time.

The Golden Metrics

CAC (Customer Acquisition Cost)

How much do you spend to get one customer? This includes ad spend, tools, and team salaries. If your CAC is too high, you burn cash too fast.
Formula: (Marketing Spend + Salaries) / New Customers

LTV (Lifetime Value)

How much is a customer worth? LTV is the total revenue you expect from a single customer before they churn. Higher retention (longer lifespan) and higher pricing (MRR) drive this up.
Formula: Average MRR × Average Lifespan (Months)

The LTV:CAC Ratio

This ratio tells you if your business model is scalable. A 3:1 ratio (3x return on spend) is the industry benchmark for a healthy SaaS.

  • < 1:1: You lose money on every customer.
  • 3:1: Healthy growth.
  • > 5:1: You might be under-investing in growth.