The core venture metrics are ARR, net new ARR, gross retention, net retention, CAC, CAC payback, LTV/CAC, burn multiple, and cash runway. Different stages emphasise different metrics. At Seed, investors look at top-line growth and early retention signal. At Series A, they focus on gross retention, CAC payback, and growth efficiency. At Series B, net retention and burn multiple dominate the conversation.
Metrics are the evidence that your business is working. The wrong metrics make you look good on a slide; the right ones prove the business can scale. This pillar guide covers the core startup metrics investors track, how to define them without gaming, and how to report them to boards and shareholders.
Investors use metrics to answer three questions: is the business growing fast enough to justify the valuation, is the business retaining customers well enough to scale, and is the business using cash efficiently enough to reach its next milestone? Every metric should ultimately answer one of these three questions. Vanity metrics that do not answer these questions are noise.
For subscription businesses, the core revenue metrics are MRR, ARR, net new ARR, and revenue growth rate. MRR is monthly recurring revenue as of the last day of the month. ARR is MRR multiplied by 12. Net new ARR is the change in ARR period over period, broken into new, expansion, contraction, and churn. Revenue growth rate is usually expressed as month-over-month, quarter-over-quarter, or year-over-year.
Gross retention measures customers who stayed, excluding any expansion. Net retention includes expansion, so it can exceed 100 percent. World-class SaaS businesses hit gross retention above 90 percent and net retention above 110 percent. Retention cohorts by signup month show whether your product is getting stickier over time; a flattening cohort curve is the single strongest signal that retention is real.
CAC is all sales and marketing spend divided by new customers acquired in the period. Fully-loaded CAC includes salaries, commissions, tools, and ad spend. CAC payback is CAC divided by gross margin per customer per month; sub-12 months is excellent, 18 to 24 is acceptable, 30+ is a red flag. LTV/CAC ratio should be above 3 for a sustainable business.
The burn multiple measures how much cash you burn to generate each dollar of net new ARR. Burn multiple under 1 is excellent, 1 to 2 is good, 2 to 3 is acceptable at early stage, 3+ is a red flag. The Rule of 40 states that revenue growth rate plus profit margin should exceed 40 percent for a healthy SaaS business; used to benchmark growth stage companies.
Lagging indicators (ARR, churn) tell you what already happened. Leading indicators (pipeline, activation, engagement) predict what will happen next. Every board dashboard should have both. Leading indicators are especially important for early-stage boards because lagging indicators are too slow to guide decisions.
Define every metric in writing. Agree the definition with your board at the first meeting. Track the same metric the same way every period. Never retroactively recalculate a metric without disclosing the change. Maintain a metrics dictionary as a Notion page or wiki, linked from every investor update and board deck.
Common questions founders ask about this topic.
Investors prioritise ARR, net revenue retention, gross margin, magic number, rule of 40, and payback period. ARR shows scale, net retention shows product love, and the rule of 40 shows you are balancing growth and efficiency.
A ratio of 3:1 is the long-standing benchmark. At 1:1 or 2:1 you are losing money on growth; above 5:1 you are under-investing in sales and marketing. Always pair the ratio with a payback period under 18 months.
Net revenue retention equals the recurring revenue from the cohort of customers you had 12 months ago, adjusted for upgrades, downgrades, and churn, divided by the recurring revenue that same cohort was paying 12 months ago. Best-in-class SaaS hits 120 per cent or more.
Rule of 40 says growth rate plus profit margin should exceed 40 per cent. It rewards companies that balance growth and efficiency. Public SaaS trading at premium multiples consistently score above 40; laggards score below 20.
Monthly for financials and sales pipeline, quarterly for deep dives on cohorts and unit economics, and real-time for runway and cash. Board members want the same numbers every month, in the same format, so they can spot trends.
Metrics are the nervous system of a company. Founders who run metric-driven companies ship faster, fundraise easier, and spot problems earlier. The path from gut-feel operations to a full metrics stack runs through five steps, each taking two to four weeks to implement.
Every company has one metric that predicts long-term value. For a SaaS business it is typically net revenue retention. For a marketplace it is gross merchandise value. For a consumer app it is weekly active users. Pick the one number that, if it grows for twenty-four months, means the business is winning. Everyone on the team should know it without checking.
A funnel is the sequence of steps a prospect takes from stranger to paying customer. For SaaS the typical funnel is visitor, lead, sign-up, trial, paid, retained. Measure conversion at every step and diagnose drop-offs. Companies that instrument every stage catch problems six months before revenue reveals them.
Cohort analysis groups customers by the month they started paying and tracks them over time. Retention curves show whether product love is growing or decaying. A retention curve that flattens above eighty per cent after month twelve indicates product-market fit. A curve that keeps declining means churn is eating growth.
Every metric in your operations dashboard should map to an assumption in your financial model. If retention is ninety per cent in the model and eighty-five in operations, the model is wrong and fundraising will fail. Closing the gap between operational metrics and model assumptions is the single highest leverage activity for any founder who plans to raise capital.
A board-grade dashboard has six to ten metrics, updated monthly, with a sparkline, a target, and a variance call-out. Send it to the board every month on the same day. Consistency earns trust. Inconsistency invites micromanagement.
Expect investor questions about growth rate, net revenue retention, gross margin, payback period, magic number, rule of forty, and burn multiple. Each has a standard definition and a best-practice target. Memorise the definitions and learn the targets for your stage and sector. An investor who has to explain how to calculate net revenue retention has already lost interest in your company.
Raise Ready offers a KPI dashboard template, a cohort analysis workbook, and a monthly board update template. The dashboard ships with formulas pre-wired so you only need to paste in your monthly numbers. The cohort workbook auto-plots retention curves. The board update template mirrors what top SaaS boards expect to see every month.
Founder metrics fall apart when the team uses the same name for subtly different calculations. The sales team might count a trial as a customer while finance counts only paying signups. Marketing might compute CAC using blended spend while the board expects a paid-only number. A clean metrics definition document solves ninety per cent of this drift and is one of the fastest returning investments an early finance team can make.
Monthly recurring revenue is the recognised recurring income from active subscriptions at the end of the month, excluding setup fees, usage overages, and one-off services. Annual recurring revenue is the forward-looking twelve-month view of the current MRR run-rate, calculated as MRR multiplied by twelve. ARR is not the same as the revenue line on the P&L because the P&L includes non-recurring revenue and collects cash on a different timing basis. The ARR number is the one used in board packs and investor updates, and it should be computed directly from the subscription system rather than back-calculated from the P&L.
LTV is the total gross profit a customer generates over the life of the relationship. The correct formula is the average revenue per account per month multiplied by gross margin percentage divided by the monthly churn rate. Founders frequently omit the gross margin multiplier, which inflates the LTV number by two to three times and triggers immediate credibility loss in diligence. LTV is also not a projection of future value; it is a backwards-looking calculation on the cohorts that have completed their revenue life.
CAC is the total sales and marketing spend in a period divided by the number of new customers acquired in that period. The total spend must include all marketing tools, agency fees, sales team salaries, and sales commissions. It should exclude customer success costs, which are a retention cost, not an acquisition cost. Blended CAC uses all customers regardless of acquisition source. Paid CAC uses only customers acquired through paid channels. Investors will ask for both, and the gap between them tells the story of how dependent the business is on paid growth.
A healthy LTV to CAC ratio is three or higher. Below three the business is spending too much to acquire customers relative to the value they generate. Above five the business is likely underinvesting in growth and leaving market share on the table. The ratio alone is insufficient; pair it with the CAC payback period, which should be under twelve months for SMB customers and under eighteen months for mid-market. Enterprise customers with longer contracts can tolerate twenty-four months.
Cohort retention tracks the percentage of customers from a given signup month who are still active in each subsequent month. A healthy SaaS cohort flattens after twelve to eighteen months at fifty to eighty per cent depending on the segment. A cohort that continues to decline at a constant rate is leaking customers from the core product, not just the early adopters, and needs immediate attention. Net dollar retention adds upgrade and expansion revenue on top and should exceed one hundred per cent for the healthiest businesses.
A North Star metric is the single number that captures the value the product delivers to customers. For a marketplace it might be paid transactions per week. For a content app it might be weekly active readers. For a SaaS tool it might be weekly active teams. The North Star is not a financial metric; it measures the product, not the business. Pick one and tie every weekly team update to it. When the North Star diverges from financial metrics, the product is leaking value before revenue catches up.
Full worked examples for each of these formulas live in the metrics pillar article library. Pair the glossary entries above with the specific playbook articles for the metric your board is asking about.
Gross margin is revenue minus cost of revenue, expressed as a percentage of revenue. Cost of revenue includes hosting and infrastructure, payment processing, third-party data or API costs that scale per customer, direct customer support, and any cost of goods for physical products. It does not include general support overhead, customer success salaries beyond the direct portion, or marketing. A SaaS business targeting Series A should show gross margin above seventy per cent. Marketplaces can operate at twenty to thirty per cent if the take rate is the right shape. Physical goods businesses land in the thirty to fifty per cent range.
Cash collected is not the same as revenue recognised. A one-year contract worth twelve thousand pounds paid up front is twelve thousand pounds of cash but one thousand pounds per month of recognised revenue. The distinction drives the P&L shape during diligence and decides how the investor values the business. Founders who model cash as revenue confuse the story and undermine their own numbers in diligence. Use a proper subscription ledger from day one, even if the accounting package is a basic one.
At seed, investors want to see the trajectory more than the absolute numbers. A growing ten thousand pounds of MRR with strong cohort retention is more compelling than a flat fifty thousand pounds of MRR with a leaky cohort. At Series A, the benchmarks start to matter: three hundred thousand pounds of ARR, LTV to CAC above three, net dollar retention above ninety per cent, and a CAC payback of twelve months or less. At Series B, the bar rises sharply: a million plus of ARR, retention above one hundred per cent, and visible product-market fit across more than one customer segment.