Divides total sales-and-marketing spend by the number of new customers acquired in the same period to produce a blended acquisition cost. Startups and growth teams use CAC to evaluate marketing channel efficiency, optimize ad spend, and benchmark against LTV. Numbers never leave your device — every calculation runs locally in your browser.
Compute CAC payback months — how fast customers repay acquisition cost. Prove 12-month payback to investors — free, local, no signup.
Projects customer lifetime value as average order value × yearly purchase frequency × lifespan in years, with total orders and annual value shown. SaaS founders and e-commerce operators use LTV to determine acquisition budgets and forecast revenue.
Model SaaS unit economics — ARPU, CAC, churn, opex, and COGS sliders with LTV:CAC health bands and a 12-month projection. Price the Growth tier that converts — free, local, no signup.
Measures return on investment by comparing net gain or loss against the original cost, expressed as both a percentage and a dollar amount. Essential for marketing campaign evaluation, equipment purchase decisions, real estate investment analysis, and comparing investment opportunities.
Compare buy net cost against rent total over a timeframe you set, from home price, down payment, mortgage rate, and monthly rent. Figures never leave your device — every calculation runs locally in your browser.
CAC = (marketing + sales spend) ÷ new customers in the same period. Example: $50,000 spend for 500 customers = $100 CAC. The tool shows the marketing-vs-sales percentage split with 4 presets (SaaS Startup, E-commerce, Enterprise B2B, Mobile App) and a 10-entry history.
Ad spend plus salaries, tools, agency fees, and content production. Ad-only CAC of $40 becomes $100+ fully loaded — the version investors and the LTV:CAC ratio actually use.
Payback = CAC ÷ monthly gross profit per customer. Example: $100 CAC ÷ ($50 × 80%) = 2.5 months. Under 12 months is healthy for SMB SaaS; enterprise tolerates 18+ on annual contracts.
Both. Blended ($100) sets budgets; channel splits reveal waste — e.g., paid search at $60 vs events at $400. Kill or fix the $400 channel instead of averaging it away.
Usual causes: experimental spend on a new channel, sales hiring ahead of ramp (cost now, customers later), or a denominator dip from seasonality. Compare 3-month rolling CAC before reacting.
Last updated October 2026