Tier 2 source16 answers cite this
David Skok, "SaaS Metrics 2.0"
David Skok, "SaaS Metrics 2.0" is a tier 2 source on AskedWell — Established editorial reference. Cook’s Illustrated, King Arthur, Serious Eats class. It's cited in 16 cooking, fermentation, and baking answers. Click any answer below to read the cited claim in context.
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what is… · business
What is monthly recurring revenue (MRR)?
MRR is the predictable monthly revenue from active subscriptions, normalized to a monthly basis. For SaaS, MRR is THE growth metric — it isolates subscription health from one-time fees, refunds, and timing noise. New MRR + Expansion MRR − Churn MRR − Contraction MRR = Net New MRR.
Why we cite it here: Canonical SaaS metrics framework including MRR component breakdown
what is… · business
What is annual recurring revenue (ARR)?
ARR is the annualized value of all active subscription contracts at a point in time. Simply: MRR × 12. ARR is the standard SaaS valuation metric at scale ($1M+ ARR companies report ARR; below that, MRR is more useful). Public SaaS typically values at 5-15× ARR depending on growth rate + retention.
Why we cite it here: Canonical ARR + NRR framework; Net Revenue Retention threshold definitions
what is the difference between… · business
What is the difference between CAC and LTV?
CAC (Customer Acquisition Cost) is what you SPEND to get one customer. LTV (Lifetime Value) is what that customer is WORTH to you over time. The CAC:LTV ratio is the canonical SaaS health metric — 1:3 is the benchmark, <1:1 means burning money, >1:5 usually means under-investing in growth.
Why we cite it here: Canonical CAC:LTV framework + 1:3 benchmark origin
what is the difference between… · business
What is the difference between MRR and ARR?
MRR (Monthly Recurring Revenue) is the monthly value of active subscriptions. ARR (Annual Recurring Revenue) is MRR × 12 — the annualized run-rate. Use MRR for early-stage / SMB / monthly-billed SaaS (sensitive at small scale). Use ARR for enterprise / annual-contract SaaS / valuation conversations (smoother at large scale).
Why we cite it here: Canonical SaaS metrics framework; MRR/ARR usage guidance by stage
what is… · business
What is customer lifetime value (LTV)?
LTV (Lifetime Value, sometimes CLV) is the total profit one customer generates over their entire relationship with you. Formula: ARPU × Average Customer Lifetime × Gross Margin. For healthy SaaS, LTV should be ≥3× CAC. Best-in-class: ≥5×. Most founders overstate LTV by 2-5× using revenue not gross profit.
Why we cite it here: Canonical LTV calculation methodology including gross-profit vs revenue distinction
what is… · business
What is churn rate?
Churn rate is the % of customers (or revenue) you LOSE in a given period. Customer churn = customers lost / customers at period start. Revenue churn = MRR lost / MRR at period start. For SaaS, healthy monthly churn is <3% (SMB) or <1% (enterprise). High churn destroys LTV multiplicatively.
Why we cite it here: Canonical churn definitions + impact on LTV
what ratio of… · business
What ratio of CAC to LTV is healthy?
The canonical SaaS health benchmark is 1:3 (David Skok, Bessemer). Below 1:1 = burning money. 1:2 = marginal. 1:3 = healthy. 1:4-1:5 = strong but possibly under-investing in growth. Above 1:5 = either undermonetized OR understated CAC OR inflated LTV — investigate the inputs.
Why we cite it here: Canonical 1:3 CAC:LTV benchmark origin + methodology
what ratio of… · business
What ratio of R&D spending to revenue is normal?
R&D-to-revenue ratio varies by sector. SaaS typical: 25-50% in growth stage, dropping to 15-25% at maturity. Pharmaceuticals: 15-20%. Hardware tech: 6-10%. Consumer products: 1-5%. Public-tech-company average across sectors: ~14%. R&D-heavy companies trade short-term margin for long-term product moat.
Why we cite it here: SaaS-specific R&D investment framework + relationship to growth
what ratio of… · business
What ratio of sales to marketing spend should you target?
The Magic Number — net new ARR added / total Sales+Marketing spend — measures growth efficiency. Healthy Magic Number is 0.75-1.0+ (1× means each $1 of S+M spend produces $1 in new ARR within 4 quarters). Within S+M budget allocation: PLG (50/50 ratio) · enterprise sales-led (70-80% sales) · SMB marketing-led (60-70% marketing).
Why we cite it here: Sales productivity benchmarks + GTM motion frameworks
what is the difference between… · business
What is the difference between churn rate and retention rate?
Churn rate is the percentage of customers or revenue LOST in a period; retention rate is the percentage KEPT. For simple logo counts they are exact complements (retention = 100% − churn). For revenue they are NOT: expansion from existing customers can push net revenue retention above 100% while gross logo churn stays positive.
Why we cite it here: Canonical churn/retention definitions + the "negative churn" concept
what is the difference between… · business
What is the difference between CAC and CPA?
CAC (Customer Acquisition Cost) is total sales and marketing spend divided by new PAYING CUSTOMERS, across all channels, fully loaded with salaries and tools. CPA (Cost Per Acquisition) is spend divided by a single conversion ACTION — a lead, signup, or trial — usually per ad campaign and counting media spend only. CAC is a unit-economics metric; CPA is an ad-optimization metric.
Why we cite it here: Fully-loaded CAC definition + the LTV:CAC framework
what is… · business
What is gross margin?
Gross margin is revenue minus cost of goods sold (COGS), expressed as a percentage of revenue. It measures how much of each sales dollar survives the direct cost of producing or delivering the product. SaaS targets 70–85%; gross margin sets the ceiling on LTV, CAC payback, and the Rule of 40.
Why we cite it here: Gross margin inside LTV + CAC-payback formulas
what is… · business
What is net margin?
Net margin (net profit margin) is net profit divided by revenue, as a percentage — what remains after ALL costs: COGS, operating expenses, interest, and tax. It is the true bottom-line profitability. Net margin is always less than or equal to gross margin, because it subtracts everything below the gross line.
Why we cite it here: Why high-gross-margin SaaS runs negative net margin during growth
what is… · business
What is contribution margin?
Contribution margin is revenue minus all VARIABLE costs — the amount each sale "contributes" toward covering fixed costs and then profit. Formula: (revenue − variable costs) ÷ revenue. It is a different cut from gross margin: gross isolates COGS, contribution isolates variable cost. It drives break-even and per-unit pricing decisions.
Why we cite it here: Why high per-subscriber contribution margin drives SaaS scalability
what is the difference between… · business
What is the difference between gross margin and net margin?
Gross margin is profit after only direct costs (COGS), as a percentage of revenue. Net margin is profit after ALL costs — COGS plus operating expenses, interest, and tax. Gross margin measures product/delivery efficiency; net margin measures whole-business profitability. Net margin is always ≤ gross margin; the gap is everything below the gross line.
Why we cite it here: High gross margin vs negative net margin during growth
what is… · business
What is ARPU?
ARPU (Average Revenue Per User) is total revenue divided by number of users over a period. Formula: revenue ÷ active users. A SaaS earning $50,000/month from 1,000 users has a $50 ARPU. It feeds the LTV formula (LTV = ARPU × gross margin ÷ churn) and reveals whether growth comes from more users or more revenue per user.
Why we cite it here: ARPU as the top input to the LTV formula
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