SaaS Financial Forecast & Budget Planner (Excel) – 3-Year Forecasting Model for Startups

Description
This downloadable Best Practice is a 3‑year SaaS financial model and dashboard built in Excel for early‑stage and growth‑stage subscription startups. It is fully driver‑based: you only edit the yellow input cells on the Assumptions sheet (starting customers, Basic/Standard/Premium mix, ARPU, monthly growth, churn, upsell, pricing, payment fees, cost to serve per customer, OPEX, CapEx, funding, and opening cash), and the entire model updates automatically.

A detailed 36‑month Revenue sheet calculates new, churned, and active customers, ARPU, MRR, cost to serve, payment fees, total cost, gross profit, and revenue split by plan every month. The model then builds all three core financial statements: a monthly Income Statement (revenue, COGS, gross profit, OPEX, EBITDA, interest, tax, net income), a Cash Flow Statement (cash from operations, CapEx, financing, cash runway), and a Balance Sheet (cash, receivables, fixed assets, payables, equity, retained earnings) with an automatic balance check.

On top of this, a KPI Summary and SaaS Performance Dashboard consolidate the results into the metrics founders and investors care about: MRR, ARR, MRR growth, churn, net revenue retention, gross margin, EBITDA and net income margins, CAC and blended CAC, LTV, LTV/CAC ratio, CAC payback, burn rate, profitability status, cash balance, and total assets. The dashboard provides 36‑month charts for MRR, active customers, CAC vs LTV, LTV/CAC, gross margin, revenue by plan, net profit, and cumulative cash so you can quickly assess growth, efficiency, and financial health.