The Small-Firm Discount: Why Size Moves the Multiple

Two businesses in the same industry, in the same market, can trade at very different multiples for one reason: size. A business doing 500k euro of EBITDA does not sell for the same multiple as one doing 5m euro. It sells for meaningfully less. This is the small-firm discount, and understanding it is worth more than any single negotiating tactic.

The numbers

Across the European lower mid-market, EBITDA multiples rise with size in a fairly consistent pattern. Recent adviser surveys put it roughly like this:

EBITDA	Typical multiple
200k euro	around 3.9x
500k euro	around 4.4x
1m euro	around 5.1x
2m euro	around 5.5x
5m euro	around 6.3x
10m euro	around 7.2x

The pattern is not an accident. It is risk, priced.

Why smaller means cheaper

A smaller business is more fragile in exactly the ways buyers fear. It leans harder on one owner, one or two big customers, and a thin management team. Any single shock, a lost account, a departure, a bad year, lands harder on a small base. So a buyer pays less per dollar of earnings, because each dollar is less certain to repeat. The average multiple you read in a headline is usually an overestimate for a genuinely small business.

What it means if you are buying

The discount is your friend. Buying at the small end and growing into the next size band is one of the most reliable value-creation levers there is: the same business, larger and de-risked, is worth a higher multiple on exit, before you have changed anything about the market. This is the arithmetic under most buy-and-build theses.

What it means if you are selling

If you are two or three years from selling, growth is often the highest-return investment you can still make, not because bigger is vanity, but because size moves you up the multiple curve and reduces the risks that drive the discount. Reducing customer concentration, building a second line of management, and cleaning up the numbers do the same thing from the other direction.

Where diligence meets the discount

The discount is only defensible if the earnings are real. A small business's adjusted EBITDA is more sensitive to soft add-backs and to owner dependency than a large one's, so the same rigour that sets the multiple, verifying the numbers to source, testing the add-backs, mapping the owner's grip, is what determines whether you are paying 4.4x on solid earnings or 4.4x on a number that will not hold. Deal OS reads the data room and produces a brief where every figure traces to its source and contradictions are flagged with both sides cited, so the earnings you apply the multiple to are the ones that survive. See it on a synthetic deal in the sample brief, or run a real CIM through it for a one-time $99 with the CIM Pass, credited to your first month if you continue.

Frequently asked questions

What is the small-firm discount in M&A? It is the tendency for smaller businesses to sell at lower EBITDA multiples than larger ones in the same sector, because smaller firms carry more concentrated and less durable risk.

Why do smaller businesses have lower multiples? They depend more on the owner, a few customers, and a thin team, so their future earnings are less certain, and buyers pay less per dollar of less-certain earnings.

How do I move up the multiple curve? Grow EBITDA and reduce the risks that drive the discount: customer concentration, owner dependency, and unclean numbers. Size and durability together lift the multiple.

See what a cited, contradiction-flagging brief looks like on a sample deal at Deal OS.