Five numbers do most of the work in an optometry valuation: practice net, optical gross margin, optical capture rate, revenue per comprehensive exam, and non-OD staff cost. They matter because a buyer prices a practice on its earnings, and these are the numbers that decide the earnings. Collections and patient count are the two most watched figures in most practices and they predict the least.

Here is the arithmetic behind that. In the earnings method we use (laid out in how optometry practices get valued), you take 3 years of EBITDA, weight the latest year at one half, the middle at one third, the oldest at one sixth, and multiply by 4.25. As an illustration, say the 3 years were $150,000, $180,000, and $210,000. That is $25,000 + $60,000 + $105,000 = $190,000 weighted, and $190,000 x 4.25 = $807,500. Other buyers use other methods, so treat the 4.25 as ours, not as a market quote.

Now the useful part. On a practice collecting $1 million, one point of net margin is $10,000 of earnings. If it holds across all 3 years, that is $10,000 x 4.25 = $42,500 of value. A point of margin is worth more than most owners think, and it is a lot harder to find in an annual tax return than in a monthly report.

Which KPIs actually predict value?

Start with practice net, because it is the valuation in miniature. BCAT puts well-managed practices at 25% to 35% of collections, ODs on Finance says 27% to 35%, and BizMetricsHQ's panel median is closer to 24%. Mid 20s is normal. Under 20% usually means one of the other four numbers is off, and a buyer will go looking for which one.

Optical gross margin is next, and it is the one that hides best. The published ranges disagree (we land on a working band of 55% to 70%, with everyone agreeing that below 50% is a problem), and most owners cannot say where they sit because optical cost of goods is blended into one supplies line. If your monthly financials cannot show optical cost of goods by itself, that is the first thing to fix. We wrote up why in the two margins inside every practice.

Optical capture has the most room in it. BCAT's benchmark is about 60% on average with well-run dispensaries at 75% or higher. What each point is worth depends on your exam volume and your average optical sale, so run it on your own numbers. Revenue is not earnings, but optical dollars carry the high margin, so capture feeds the first two numbers directly.

Revenue per comprehensive exam is where medical billing and fee discipline show up. BCAT's average is about $285, strong practices run $350 or more, and under $250 reads as a revenue problem instead of a volume problem. And non-OD staff cost, at 18% to 24% of collections in the healthier range (typical practices run higher, up to the high 20s), is the biggest expense you can actually steer.

That is five, and I have not given them equal weight on purpose. If you only watch two, watch practice net and optical gross margin. The other three are why those two move.

What looks like a KPI and is not?

Total collections. A $1.2 million practice that keeps 18 cents of each dollar is worth less than an $800,000 practice that keeps 32, and the top line cannot tell you which one you are.

New patients per month is similar. It is a fine marketing number, but a buyer cares whether those patients are seen at a fee that makes money, and whether they buy glasses from you afterward.

Even net collection rate, which does belong on a dashboard, is a bit different. It tells a buyer whether claims are getting paid. The claim work stays with your billing manager, who owns submissions, denials, and payer follow-up. You ask for the rate every month and ask what is behind any drop.

What a buyer sees that you do not

Owner dependence. If most exams happen in your chair and your schedule is the practice, a buyer is paying for a job. There is no published benchmark I would trust for this, so I will not invent one: look at what share of exams someone else performs, and look at whether that share is going up.

And clean books. A buyer's accountant will discount anything they cannot tie out, and a bank statement that does not match the collections report is the quickest way to start that conversation. Books that close each month, with the bank tied to the collections report your billing manager produces, take away most of what a diligence review would otherwise find.

When this is more than you need

If you collect under about $500,000, or you are not going to sell, borrow, or bring in a partner for years, you do not need a valuation dashboard. Watch practice net, optical margin, and staff cost from a spreadsheet, and compare each to your own number from 6 months ago. Your trend will tell you more than any national median, this article included.

The reason to start earlier than that is the weighting. The latest year counts for half, but the 2 before it count for the other half, so margin you build now is still being paid for in a sale 3 years from now.

If you want to see where your own numbers sit, our Optometry KPI White Paper has the full benchmark set and worked examples, and you can download it free on our optometry page. The longer version of each benchmark above, with the math, is in Optometry Practice KPI Benchmarks: 7 Numbers.

Questions owners ask about this

Which KPI matters most when valuing an optometry practice?

Earnings, meaning what is left after every expense except the cost of the doctors who produce the revenue, stated as EBITDA and weighted toward the most recent year. Practice net as a percent of collections is the monthly version of that. Everything else on the dashboard matters because it moves that number.

Does revenue growth raise what my practice is worth?

Only if the new revenue comes with profit. A practice that grows collections 10% while discounting more and adding payroll can end the year with lower earnings, and a buyer prices the earnings. Look at practice net next to growth before you celebrate either.

How many years of numbers does a buyer look at?

The method we use weights 3 years of EBITDA, with one sixth on the oldest year, one third on the middle year, and one half on the latest. Other buyers and brokers use their own methods, so ask early which one is on the table.

Can I improve these numbers before I sell?

Yes, but a single strong year only gets a fraction of the weight in a 3-year average. Owners who start 2 to 3 years ahead get the full benefit, because the trend is what the buyer is paying for.

Who tracks these numbers inside the practice?

You do, with books that close each month. Your billing manager owns the claim work behind collections. We do not run your receivables, and an outside accountant should not. We tie the bank to the collections report and build the monthly financials the other numbers come from.