How marketing agencies are valued, and how to build one worth buying

A marketing agency is valued as a multiple of its adjusted earnings, not its revenue. Small owner-run agencies typically trade around 2x to 4x seller's discretionary earnings, and larger agencies with a management team trade around 4x to 7x EBITDA, with the exact multiple set by retainer share, client concentration, owner dependence, margin and growth.

Those drivers are worth fixing even if you never sell. Everything a buyer pays a premium for is something that makes the agency easier to run in an ordinary week. This guide follows one fictional agency, Harbor & Pine, a 14-person content and paid social shop, from a $513,000 valuation to a $2.3 million one over two years.

Why run the agency as if a buyer were reading the books?

Because a buyer asks the questions an owner should be asking anyway. Will this revenue still be here in twelve months? What happens if the biggest client leaves? Does delivery stop when the founder goes on vacation? Is the margin real, or is it a spreadsheet that agrees with itself?

An owner who answers those questions well has an agency that sleeps at night. Retainers make capacity plannable, so hiring follows contracted demand instead of a hunch. A spread client base means no single account dictates terms. A team that runs delivery gives the owner back their calendar. Clean monthly numbers turn "are we doing well?" into a lookup.

The sale price is the scoreboard. The prize is the business you run in the meantime.

SDE or EBITDA: which number will a buyer multiply?

It depends on size and on who does the owner's job after the sale.

Seller's discretionary earnings (SDE) is profit plus the owner's entire compensation plus add-backs. It answers one question: what does a single owner-operator take home from this business? It is the standard for small agencies where the buyer, often an individual or a smaller agency, will step into the owner's role.

EBITDA, adjusted for add-backs, deducts a market salary for whoever performs the owner's function. It answers a different question: what does the business earn if the owner is replaced by an employee? It is the standard once earnings pass roughly $1 million, there is a management layer, and the buyer is a larger agency, a holding company or a private equity backed platform.

The two land in similar places. SDE is a bigger number multiplied by a smaller multiple, because the buyer knows they must fund the owner's job out of it. EBITDA is a smaller number multiplied by a bigger one.

The Verbial marketing agency valuation calculator works the same way. It rebuilds SDE and adjusted EBITDA from your P&L, prices SDE under $500,000 of adjusted EBITDA and EBITDA from $1 million, blending the two in between, and reads a base multiple off a size curve before adjusting for risk. Every Harbor & Pine figure below comes out of the tool, so you can reproduce it.

Which add-backs survive diligence?

Add-backs are costs in the books that a new owner would not carry. They are legitimate, and they are also where most valuation disputes start, because a buyer accepts only the ones with documents behind them.

Here is Harbor & Pine's bridge from reported profit to both earnings figures in year zero, on $1.8 million of revenue.

Three add-backs reliably get rejected. Recurring "one-time" costs, such as a website redesign every year. Below-market salaries that a buyer would have to raise, which are add-backs in reverse. And anything without a paper trail. If you have to explain an add-back from memory, budget for losing it.

The cleanest move is to stop running personal costs through the agency two years before any sale. The add-backs shrink, the reported profit rises, and there is nothing to argue about.

What multiples do marketing agencies sell for?

Public commentary from agency M&A advisors and brokers clusters around the ranges below. Treat them as rules of thumb, not quotes: deal terms vary widely, sellers publicize good outcomes more than bad ones, and higher interest rates since 2023 have pulled multiples down from their 2021 peak.

Two caveats matter more than the ranges. First, a headline multiple usually includes an earnout, so "5x" often means 3.5x in cash and the rest if targets are hit. Second, revenue multiples are a poor shortcut. Two agencies at $2 million of revenue, one at 10% margin and one at 25%, have adjusted earnings of $200,000 and $500,000. No serious buyer prices them the same.

How is the price actually paid?

The headline number is a total. What reaches your bank account at closing is a portion of it, and the split is where a buyer prices the risk they did not want to put into the multiple.

The pattern is consistent. The more the revenue depends on the owner or on one client, the more of the price moves into the earnout. A buyer who worries the biggest account leaves with the founder will happily pay "full price", as long as most of it is contingent on that account staying.

So fixing the drivers changes two things at once: the multiple goes up, and the share paid in cash at close goes up with it.

Which drivers move the multiple?

These are the levers buyers underwrite, in roughly the order they discount for them. The thresholds match the calculator.

Recurring share matters because a retainer is a forecast a buyer trusts. A drawdown retainer renewing for its third year is worth more than a project of the same size, because the project has to be sold again. See retainer vs project vs hourly billing for how the models compare.

Concentration matters because a buyer is paying for several years of earnings, and one client leaving takes a third of them. The detail on measuring and reducing it is in agency client concentration risk.

Margin matters twice. Net margin sets the earnings being multiplied, and gross margin on labor tells the buyer whether that net margin is durable. An agency at 22% net with 38% gross margin is usually under-investing in overhead it will need later, and diligence finds it. Measure it per client using contracted revenue and absorbed labor cost, as set out in client profitability for marketing agencies.

Clean monthly numbers do not appear in the multiple directly. They decide how much of everything else a buyer believes. Diligence on an agency that closes its books monthly takes weeks. Diligence on one that rebuilds the year in a spreadsheet takes months, and every unexplained gap becomes a price reduction or a bigger holdback.

What does two years of fixing the drivers look like?

Harbor & Pine in year zero: $1.8 million of revenue, 45% on retainers, the rest a mix of launches and one-off campaigns. The largest client, a consumer brand the founder brought in personally, is 34% of revenue and the top five are 65%. The founder still writes strategy for most accounts, does about 45% of delivery hours and closes 90% of new business. Nobody below the founder runs a department. The books are cash basis, reconciled at year end, and clients are on month-to-month terms. Gross margin on labor is 44%, and adjusted EBITDA is 14% of revenue.

Over two years the owner does four things. Converts project clients to retainers at renewal and moves them onto 60 to 90 day notice terms. Wins new retainer clients in its strongest vertical so the big account shrinks as a share without being lost. Hires a delivery director and moves every account's day-to-day relationship to the team. Reprices the two retainers running under the 40% gross margin floor, and moves the books to a monthly accrual close.

Revenue grew 33%. Value grew about four and a half times. Adjusted EBITDA doubled, and the multiple on SDE nearly tripled, because almost every risk a buyer would have discounted for in year zero was gone by year two. The range also narrowed, from 25% either side to 18%, because accrual books leave a buyer less to guess.

The terms change with it. Illustratively, a year zero offer at the midpoint might pay under half at close and put 40% into a three-year earnout tied to the big client renewing. The year two offer pays most of the price at close because there is far less to hedge. The calculator estimates the share paid at close from the same risk factors: about 45% in year zero and about 80% in year two.

Now the part that matters if Harbor & Pine never sells. Adjusted EBITDA went from $252,000 to $504,000, after paying the owner a market salary. They stopped doing 45% of delivery. The agency no longer has a client who could halve its profit with one email. Those were the reasons to do the work. The valuation is a side effect.

What should you fix first?

Fix in the order that compounds, not the order that feels urgent.

Start with the numbers, because every other fix needs them to prove it worked. Close the books monthly on an accrual basis, recognize retainer revenue in the month it is earned (see revenue recognition for retainers), and calculate margin per client from contracted revenue, never hours times rate. A buyer will rebuild this anyway. You might as well run on it.

Then margin. Repricing a retainer under the 40% gross margin floor raises earnings immediately and raises the base multiple with them. It is the fastest lever on the table.

Then founder dependence, because it takes the longest. A buyer wants to see two clean quarters where the team ran delivery and the numbers held. Hiring a delivery lead, moving client relationships, and letting the utilization rate of the owner fall toward 10 to 25% is a nine-to-twelve month project at best.

Concentration and recurring share move together, through new business. Win retainer clients in your strongest niche and the largest account shrinks as a share without being put at risk. The playbook for that is in how to scale a marketing agency.

Process documentation comes last, not because it matters least but because it is easiest to write once the delivery team, rather than the founder, is already running the work. Then it describes what actually happens.

What to do this month

• Rebuild last year's profit into adjusted earnings using the add-back table above, and mark which add-backs have documents behind them.
• Run your numbers through the agency valuation calculator and note which factor costs you the most multiple.
• Calculate your retainer share of revenue and your largest client's share for the last twelve months.
• Pull the owner's delivery hours for the last quarter and divide by total delivery hours.
• List every client under 40% gross margin on labor and pick a reprice, rescope or exit date for each.
• Stop running personal costs through the agency from next month.
• Put a date on the calendar two years out, and decide what each driver should read by then.

Verbial shows margin per client from contracted revenue and absorbed labor cost, utilization by person and department, and retainer pacing every month, so the numbers a buyer asks for are the ones you already run the agency on.