SaaS Metrics Dashboard

Frequently Asked Questions

What are the most important SaaS metrics?

Top 5: MRR/ARR (revenue), Net Revenue Retention (>100% is healthy), Gross Margin (>75% for SaaS), CAC Payback (<12 months), and Rule of 40 (Growth + Profit Margin >40%). These cover growth, retention, efficiency, and profitability.

What's the Rule of 40?

Growth Rate (%) + Profit Margin (%) ≥ 40% indicates a healthy SaaS business. A company growing 50% with -10% margin = 40 (passing). Below 40 means either growth is too slow or burn is too high. Top public SaaS companies often hit 50-60.

What's the difference between MRR and ARR?

MRR (Monthly Recurring Revenue) = predictable monthly subscription revenue. ARR (Annual Recurring Revenue) = MRR × 12. ARR is preferred for annual-contract SaaS; MRR for month-to-month. Both exclude one-time fees, professional services, and overage charges.

What is Net Revenue Retention?

NRR = (Starting MRR + Expansion - Contraction - Churn) / Starting MRR. NRR >100% means existing customers grow more than they churn - a key sign of product-market fit. Best-in-class SaaS: 120%+. Below 90% suggests a leaky bucket that's hard to grow profitably.

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How This Calculator Works

This tool computes the full panel of SaaS health metrics that investors and operators scrutinise, all from a handful of inputs: monthly recurring revenue (MRR), active customers, monthly gross and expansion percentages, customer acquisition cost (CAC), gross margin, year-over-year growth and net margin. From those it derives ARR, ARPU, gross and net revenue retention (GRR and NRR), lifetime value, the LTV/CAC ratio, CAC payback period, and the Rule of 40 - then assigns an overall health verdict from unsustainable to excellent. Rather than judging any single number in isolation, it shows how the metrics interact, because a great LTV/CAC ratio paired with a 36-month payback still spells trouble for a cash-constrained company.

Formula / Method

ARR = MRR × 12. ARPU = MRR ÷ customers. GRR = (1 − gross churn) × 100. NRR = (1 − gross churn + expansion) × 100. LTV = (ARPU × gross margin) ÷ monthly gross churn. LTV/CAC = LTV ÷ CAC. CAC payback (months) = CAC ÷ (ARPU × gross margin). Rule of 40 = YoY growth % + net margin %. Health is "excellent" when LTV/CAC ≥ 3, NRR ≥ 110% and Rule of 40 ≥ 40; "healthy" at LTV/CAC ≥ 2 and NRR ≥ 100%; "watch" at LTV/CAC ≥ 1; and "unsustainable" below that.

Worked Example

MRR $50,000, 250 customers, 2% monthly gross churn, 1.5% expansion, CAC $1,200, 78% gross margin, 60% growth, −15% net margin. ARR = $600,000; ARPU = $200; GRR = 98%; NRR = (1 − 0.02 + 0.015) × 100 = 99.5%. LTV = ($200 × 0.78) ÷ 0.02 = $7,800, so LTV/CAC = $7,800 ÷ $1,200 = 6.5×. Payback = $1,200 ÷ ($200 × 0.78) ≈ 7.7 months. Rule of 40 = 60 + (−15) = 45 - above the bar. Strong LTV/CAC and Rule of 40 here, though NRR just under 100% means churn slightly outpaces expansion and is the metric to fix.

Common Mistakes

Mixing monthly and annual churn - LTV uses the monthly rate; plugging in an annual figure inflates LTV roughly twelvefold.

Computing LTV from revenue rather than gross profit - always apply gross margin first.

Reporting NRR while ignoring GRR - expansion from a few accounts can mask heavy logo churn underneath.

Celebrating a high LTV/CAC while payback runs past two years - the ratio says "profitable eventually," payback says "but not soon enough to fund growth."

Treating Rule of 40 as a target to game - cutting growth to lift margin (or vice versa) misses the point of balanced, efficient scaling.

Tips & FAQ

What do the key metrics mean? ARR is annualised recurring revenue; GRR is revenue retained excluding expansion (target 90%+); NRR includes expansion (best-in-class 120%+); LTV/CAC should reach 3.0+ since anything below 1 destroys value. What is the Rule of 40? Growth % plus profit margin % should equal or exceed 40 - premium-multiple public SaaS companies consistently clear it, and below 20 signals trouble. What is a good CAC payback? The SaaS median is around 15 months, top quartile under 12, and over 24 indicates capital inefficiency. 2024 benchmarks? NRR median 102% (top quartile 120%+), gross margin 75–80%, annual churn 5–7% for SMB and under 1% for enterprise. How do I improve? Reduce churn (even a 1-point cut can roughly double LTV), drive expansion through upsell and cross-sell, lower CAC with referrals and product-led growth, and move upmarket to lift ARPU and unit economics.

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