Funnel net contribution (monthly)
A three-stage funnel with percentages on sliders—classic demand-gen ROI storytelling. Multi-step + slider-heavy configs are exactly what teams ask AI to prototype before embedding with Calclet.
Example scenario
A vertical SaaS marketer measures eighteen thousand five hundred GA4 sessions/month touching pricing pages while CRM captures three point five percent visitor-to-lead conversion after bot scrubbing and Salesforce duplicate merges for marketing-qualified handoffs. Inside ninety-day pipeline cycles twenty-two percent of those leads close net-new annual contracts at forty-eight hundred dollars blended ACV pulled from finance’s trailing-quarter cohort average versus ramp-heavy discounts. Paid search plus LinkedIn demand-gen invoices forty-two hundred dollars monthly while modeled gross bookings hit roughly six hundred eighty-three thousand seven hundred sixty dollars before subtracting media—net contribution lands near six hundred seventy-nine thousand five hundred sixty dollars estimated monthly net new revenue minus ad spend at defaults without layering sales commissions or services attach.
Funnel net contribution (monthly)
Visitors → leads → customers minus media spend
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How to model funnel net contribution with the wizard
- On top of funnel, input monthly site visitors aligned to the same analytics definition your CRM uses—excluding employees—then slide visitor-to-lead conversion (%) using marketing-qualified leads divided by eligible sessions.
- On sales efficiency, slide lead-to-paying-customer (%) using closed-won counts divided by qualified leads inside your funnel SLA window—not closed-lost recycle counts.
- Type average contract value ($) from finance’s net-new ARR per logo divided by customers won—blend annual deals into ACV when subscriptions renew annually.
- On spend, input monthly paid media spend ($) only—compare estimated monthly net new revenue minus ad spend against fully loaded growth spend offline before defending budget.
B2B funnel conversion planning bands (segment-dependent)
- Visitor-to-lead conversion on gated enterprise journeys
- Often lands roughly mid-single-digit percentages when counting legitimate forms versus spam—product-led freemium flows behave differently
- Lead-to-opportunity and opportunity-to-close cascades
- Complex sales typically quote teens-to-twenties percent win rates from qualified pipeline stages rather than raw inbound curiosity—definitions shift KPIs materially
- CAC payback versus immediate-month contribution
- Subtracting only monthly paid spend yields directional contribution—finance models amortize people-cost CAC and onboarding drag separately
Best use cases
- Forecasting and scenario planning
- Client education and pre-qualification
- Budget and performance decision support
Frequently asked questions
Does visitor-to-lead conversion include demo requests from outbound SDR touches?
Only if those sessions hit your web analytics numerator consistently. Mixed attribution blends inflate conversion—segment inbound organic versus paid separately when diagnosing wizard assumptions.
Why multiply averages instead of summing weekly cohort revenue?
This wizard trades fidelity for scenario speed—finance-grade forecasts stage cohort timing with lag curves. Use outputs as directional sensitivity before layering revenue recognition delays.
Should average contract value use GAAP revenue or booked ARR?
Match whichever denominator feeds lead-to-customer math. ASC 606 recognition smooths cash while booked ARR spikes when prepay lands—pick one definition leadership already trusts.
Can I subtract agencies or creative retainers from contribution?
Current formula only subtracts monthly paid media spend ($). Layer agency fees and tooling into an adjusted monthly spend figure or treat them as fixed OpEx outside this headline metric.
Glossary
Scenario modeling
Testing multiple assumptions to estimate possible outcomes before execution.
Commercial intent
User behavior indicating readiness to buy, subscribe, or request a quote.
Related calculators
Category: Demand generation & funnel forecastingTopics: Marketing funnel economics, Pipeline contribution modeling, Paid media net contribution
Last reviewed: 2026-05-07
Reviewed by: Calclet Growth Team