Startup Financial Modeling

This walks you through building realistic 3-5 year financial models for startups, focusing on cohort-based revenue projections, detailed cost breakdowns across COGS/S&M/R&D/G&A, and cash flow analysis. It covers different business models (SaaS, marketplace, e-commerce) with specific formulas and metrics like CAC payback, LTV ratios, and burn multiple. The three-scenario framework (conservative/base/optimistic) is solid for both fundraising decks and actual cash management. Most useful when you need to move beyond a napkin sketch into something with monthly detail, headcount planning, and runway calculations. The templates give you concrete starting points rather than making you reverse-engineer what investors expect to see.

skills.sh installs: 281
GitHub stars: 39.4K
last updated: Jun 3, 2026

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Install

$ npx -y skills add sickn33/antigravity-awesome-skills --skill startup-financial-modeling --agent claude-code

Installs into .claude/skills of the current project.

Files

Startup Financial Modeling

Build comprehensive 3-5 year financial models with revenue projections, cost structures, cash flow analysis, and scenario planning for early-stage startups.

Use this skill when

Working on startup financial modeling tasks or workflows
Needing guidance, best practices, or checklists for startup financial modeling

Do not use this skill when

The task is unrelated to startup financial modeling
You need a different domain or tool outside this scope

Instructions

Clarify goals, constraints, and required inputs.
Apply relevant best practices and validate outcomes.
Provide actionable steps and verification.
Use the examples below; no separate implementation playbook is bundled.

Overview

Financial modeling provides the quantitative foundation for startup strategy, fundraising, and operational planning. Create realistic projections using cohort-based revenue modeling, detailed cost structures, and scenario analysis to support decision-making and investor presentations.