Most founders track revenue. It is the number that goes in the headline — the milestone they announce, the metric they watch obsessively. But revenue is one of the least informative numbers in a business. It tells you how much came in. It does not tell you how much stayed, how efficiently it was earned, or whether the business is actually getting stronger.
Here are the 10 financial metrics that genuinely matter — the numbers that, tracked consistently, tell you whether your business is healthy, sustainable, and worth investing in.
1. Gross Profit Margin
Formula: (Revenue − Cost of Goods Sold) ÷ Revenue × 100
Gross margin is the percentage of revenue that remains after paying for the direct costs of delivering your product or service. It tells you how efficiently you convert revenue into profit before fixed costs. A declining gross margin is one of the earliest and clearest signals that something is wrong with your business model.
Target benchmarks: 50–70% for service businesses, 30–50% for product businesses.
2. Net Profit Margin
Formula: Net Profit ÷ Revenue × 100
After all costs — direct, indirect, fixed, and variable — how much of each pound or dollar of revenue is profit? Net margin is the ultimate measure of business efficiency. A business growing revenue at 30% while net margin shrinks is growing itself into a problem.
3. Monthly Recurring Revenue (MRR) or Revenue Consistency
For subscription businesses, MRR is the gold standard metric. For non-subscription businesses, track revenue consistency: what percentage of your revenue comes from predictable, returning sources versus unpredictable one-off transactions?
A business with 70% recurring revenue is structurally healthier than one with equivalent total revenue that comes entirely from new client acquisition every month.
4. Cash Runway
Formula: Cash balance ÷ Monthly net cash outflow
How many months can your business survive if revenue stopped today? This is not a hypothetical crisis metric — it is operational intelligence. Know your runway. Update it monthly. Do not let it fall below three months without a plan.
5. Accounts Receivable Days (DSO)
Formula: (Accounts Receivable ÷ Revenue) × Number of days
Days Sales Outstanding measures how long it takes to collect payment after a sale. A DSO of 45 means it takes 45 days on average to collect what you are owed. High DSO is a cash flow risk — and a signal that your collections process needs attention.
Target: Under 30 days for most businesses. If you are regularly above 45, start chasing payments more aggressively.
6. Customer Acquisition Cost (CAC)
Formula: Total sales and marketing spend ÷ Number of new customers acquired
How much does it cost to acquire one new customer? This number is only meaningful in context — specifically, in relation to the revenue that customer generates over their lifetime. A CAC of £500 is excellent if customers generate £5,000. It is catastrophic if they generate £300.
7. Customer Lifetime Value (LTV)
Formula: Average revenue per customer × Average customer lifespan
LTV is the total revenue a customer generates before they stop buying. The relationship between LTV and CAC determines whether your business model is sustainable. Most investors and advisors look for an LTV:CAC ratio of at least 3:1.
8. Churn Rate
Formula: Customers lost ÷ Customers at start of period × 100
How many customers are you losing each month? Even a 5% monthly churn rate means you are replacing half your customer base every year — and growing becomes an exercise in filling a leaking bucket. For subscription businesses especially, churn is often the most important metric in the entire business.
9. Burn Rate
For businesses not yet profitable, burn rate is how much cash you are consuming each month. Gross burn is your total monthly costs. Net burn is total costs minus revenue. Both matter. Know both.
Burn rate combined with cash runway gives you your operating timeline — the window within which you need to reach profitability or secure additional funding.
10. Revenue per Employee
Formula: Total revenue ÷ Number of full-time equivalent employees
This is a simple but powerful measure of business efficiency. As you add people, does revenue grow at least proportionally? If revenue per employee is declining as you hire, you have a productivity or capacity utilisation problem. Benchmarks vary by industry: £100k+ per employee is a reasonable floor for most service businesses.
Building your monthly dashboard
Tracking these 10 metrics does not require expensive software. A well-structured spreadsheet, updated within the first week of each month, gives you everything you need. The discipline of collecting the data is more valuable than the tool you use to store it.
Set up a simple dashboard. Review it monthly. Track trends, not just snapshots. A metric that is improving is a signal to double down. One that is declining is a signal to investigate before the problem compounds.