Four SaaS Metrics Every Early-Stage Founder Must Track to Stay Healthy

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A practical guide for SaaS founders argues that vanity metrics like page views and total signups obscure the true health of a business. The four metrics that matter most are Monthly Recurring Revenue (MRR), Customer Acquisition Cost (CAC), Lifetime Value (LTV), and runway, each answering a critical question about growth and sustainability. MRR must be broken into components — new, expansion, reactivation, contraction, and churn — because a flat or growing headline number can hide dangerous customer losses. CAC should be fully loaded to include salaries, tooling, and agency fees, not just ad spend, and paired with a payback period target of under 12 months for B2B SaaS. Together, these four metrics give founders the clarity needed to make confident early-stage decisions before cash runs out.

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