12-Month Revenue Forecast Builder
Revenue projections are the backbone of every fundraising deck and financial model. This calculator lets you build a bottom-up 12-month revenue forecast with multiple product categories, compound growth rates, and investor-ready output.
Define your product categories below, set growth assumptions, and instantly see your projected monthly and annual revenue.
Inputs
Category 1: Untitled
Results
Enter at least one category with starting units and price per unit to see the projected results.
Building a Revenue Forecast for Your Startup
A bottom-up revenue forecast is one of the most critical components of any startup financial model. Unlike top-down estimates that start with market size and assume a capture rate, bottom-up models build revenue from fundamental unit economics: how many units you sell, at what price, and how those numbers grow over time.
This calculator uses a compound growth model for each product category. For each month, units are calculated as starting units multiplied by (1 + monthly growth rate) raised to the power of the month index. The same formula applies to price. Revenue for each month equals units multiplied by price, and the total forecast sums all 12 months across all categories.
Why multiple categories matter: Most startups have more than one revenue stream. A SaaS company might have subscription revenue, onboarding fees, and usage-based charges. An e-commerce business might sell products across different price tiers. By modeling each category independently, you capture how different parts of your business grow at different rates, giving investors a more credible and granular view.
The implied month-over-month growth rate shown in the results is the geometric mean growth rate that would produce the same ratio of Month 12 to Month 1 revenue. This is the number investors focus on most -- early-stage startups typically need to demonstrate 15-20% MoM growth to be considered for venture funding. A 10% monthly growth rate compounds to roughly 3x annual growth.
Tips for a credible forecast: Ground your starting units in real data -- current customers, signed contracts, or pipeline with conversion rates applied. Use growth rates that reflect historical trends or comparable companies, not aspirational targets. Separate price increases from volume growth so investors can see which lever drives your revenue expansion. A well-built 12-month forecast tells investors you understand your business mechanics at a granular level.