The 5 numbers every agency owner should watch

Agencies drown in vanity metrics — impressions, followers, "engagement." None of those tell you whether your business is healthy. Five numbers do. If you can rattle these off at any moment, you're running the agency. If you can't, the agency is running you.

1. Monthly Recurring Revenue (MRR)

The sum of your active retainers. It's the heartbeat of a retainer business — predictable revenue you can count on next month. Watch the direction, not just the number: MRR growing means new business is outpacing churn; MRR flat while you're "busy" is a warning sign.

2. Net profit margin

Revenue minus everything it costs to run — payroll, expenses, and commissions. A lot of agencies are shocked the first time they see this, because "we're always busy" and "we're actually profitable" are not the same thing. Healthy agencies keep a real eye on margin and defend it, rather than chasing top-line revenue that leaves nothing behind.

3. Customer Acquisition Cost (CAC)

What it costs, on average, to win a client — sales commissions, sales salaries, and marketing spend, divided by the clients you signed. Most owners have no idea what theirs is. Once you do, you can answer the question that decides your growth: can we afford to acquire more clients, and how fast?

4. LTV : CAC ratio

Lifetime value of a client divided by what it cost to acquire them. This single ratio tells you if your growth engine works. A rough rule of thumb: below 1× you're losing money on every client; around 3× is healthy; well above that and you can safely spend more to grow. It's the difference between growth that compounds and growth that quietly bankrupts you.

5. Cash collected

Not invoiced — collected. Profit on paper doesn't make payroll; cash in the bank does. Agencies fail with a full pipeline and empty accounts because clients pay late. Track what you've actually collected versus what you've billed, and chase the gap relentlessly.

You don't need a finance team to know these. You need them in one place, updating themselves, so you can glance at them on a Monday morning and know exactly where you stand.

Try it with your own numbers: Agency profit calculator (free, no sign-up).