You Can't Run What You Can't See
A CEO I know once told me he realized his company was in trouble when his bookkeeper asked if they could delay payroll by a week. Not because revenue was down — they were actually having their best quarter. The problem was that nobody had been watching the right numbers. Revenue was great. Collections were terrible. By the time he noticed, the cash gap was six figures wide.
You don't need to understand every journal entry in your general ledger. But you do need a handful of metrics that tell you, at a glance, whether the business is healthy, growing sustainably, or slowly heading toward a wall. These ten KPIs are the ones I've found most consistently useful — not an exhaustive list, but a sufficient one.
The Ten That Matter
1. Monthly Recurring Revenue (MRR)
If you run any kind of subscription or contract-based business, MRR is your compass. It tells you how much predictable income you can count on each month.
But the total number alone isn't enough. You need to break it apart. How much is coming from new customers? How much from existing customers upgrading? How much are you losing to cancellations? The net change between these components tells the real story — growth isn't just about adding new logos, it's about whether the water is rising or falling in the bucket.
2. Gross Margin
This one is deceptively simple: what percentage of each revenue dollar is left after you pay the direct costs of delivering your product? For SaaS businesses, healthy margins run 70-85%. For service businesses, 40-60% is more typical.
If this number is declining, something is wrong — either your costs are creeping up, your pricing power is eroding, or you're attracting less profitable work. It's an early warning signal that demands investigation before it becomes an emergency.
3. Customer Acquisition Cost (CAC)
How much does it cost to win a new customer? Add up everything you spend on sales and marketing — salaries, tools, ad spend, commissions — and divide by the number of new customers acquired.
This number grounds your growth conversations. If CAC is $500 and your average customer pays you $50/month, you need ten months just to break even on the acquisition. That's not necessarily bad, but you need to know it.
4. Customer Lifetime Value (LTV)
LTV estimates the total revenue a customer will generate over the full duration of their relationship with you. The magic number is the LTV-to-CAC ratio. Below 3:1 means you're spending too much to acquire customers. Above 5:1 means you're probably underinvesting in growth. Between 3:1 and 5:1 is the sweet spot where your acquisition engine is working efficiently but still has room to be scaled.
5. Burn Rate and Runway
If you're not yet profitable, these two numbers are your survival metrics. Burn rate is how fast you're spending cash. Runway is how many months you can survive at the current pace.
When runway drops below six months, it's time to either start raising money or start cutting costs. Ideally, you'd prefer to start that clock earlier — fundraising takes longer than any founder expects.
6. Operating Cash Flow
This is the amount of actual cash your core business generates from operations. It's different from net income because it strips out non-cash accounting items like depreciation and accounts for changes in working capital.
If your income statement shows a profit but your operating cash flow is consistently negative, something is broken — usually receivables are growing too fast, or you're burning cash on inventory you can't move.
7. Revenue Growth Rate
Track both month-over-month and year-over-year growth. Year-over-year is more reliable because it filters out seasonal noise. Accelerating growth validates your strategy. Decelerating growth is a signal that something needs to change — pricing, market, product, go-to-market approach — before the slowdown becomes permanent.
8. Net Revenue Retention (NRR)
This is the percentage of revenue retained from your existing customer base, including upsells and expansions but accounting for churn. An NRR above 100% means your existing customers are spending more over time — even before you add a single new customer, your revenue still grows. The best companies in the world operate at 120%+ NRR. Below 90%, and you have a leaky bucket that will be very expensive to fill.
9. Accounts Receivable Aging
How long are customers taking to pay? Track the distribution — what percentage of your receivables are current, what percentage are 30+ days late, what percentage are 60+ or 90+?
Growing aged receivables are a flashing warning sign. If a larger and larger share of your revenue is sitting in "over 60 days" buckets, your cash flow problems are about to get much worse.
10. Working Capital Ratio
Current assets divided by current liabilities. Above 1.5 and you're in a comfortable position. Between 1.0 and 1.5, you need to be careful. Below 1.0, you may not be able to cover your bills — and that's a five-alarm situation.
This ratio doesn't change dramatically day to day, but it tends to drift in one direction over time. Watch the trend, not just the snapshot.
The Choice is Yours
Pick the metrics that match your stage. Build a simple dashboard and review it monthly. Focus on the trends, not the snapshots. The companies that thrive aren't always the ones with the best product—they're the ones that pay attention to what the numbers are saying and act before a trend becomes a crisis.