How to build a 3-year revenue model investors respect
Start from unit economics, not from a percentage of TAM. Define your inputs clearly: average contract value, sales cycle length, win rate, monthly churn, and expansion rate. For SaaS, build from seats times ACV times quarterly growth assumptions. For marketplaces, start from GMV times take rate with clear supply and demand ratio assumptions. Show your math. The model exists to demonstrate that you understand your business, not to predict the future with precision.
SaaS: seats × ACV × growth rate, with churn and expansion modeled
Marketplace: GMV × take rate, with supply/demand ratio inputs
Hardware: unit economics per device including BOM reduction curve
Unit economics every investor expects to see
Customer acquisition cost should be fully loaded — include marketing spend, sales salaries, and overhead allocated to acquisition. Lifetime value is annual contract value divided by churn rate, or gross margin times average customer lifetime. Payback period is CAC divided by ACV times gross margin. The magic number for SaaS is net new ARR divided by prior-quarter sales and marketing spend. Show each calculation. Benchmarks vary by stage: good looks different at pre-seed versus Series A.
CAC: include all sales and marketing costs, not just ad spend
LTV: use gross margin, not revenue, for an honest calculation
Payback: under 18 months is strong for most SaaS businesses
The use of funds slide most founders get wrong
Break your use of funds into meaningful categories — engineering, sales, marketing, and operations — with approximate percentages. Then connect each category to a milestone. The $3M you are raising should buy you specific proof points: reaching $1.5M ARR, hiring the VP of Sales, launching in two new markets. Show your runway calculation explicitly. Investors read your use of funds slide to understand whether you think clearly about priorities and whether you have the 18 months of runway they expect.
Breakdown by category with approximate percentages
Milestone mapping: what each allocation unlocks
Runway math: months to next raise shown explicitly