Quick answer: Buyers value a marketing or advertising agency on adjusted EBITDA measured against net revenue, which excludes pass-through media and production costs that the agency passes on to clients. They look at retainer versus project mix, client tenure and concentration, the strength of senior strategic and creative leaders, platform dependence and exposure to media payables. Reported billings overstate an agency’s size, so confusion between gross and net numbers is the most common early error.
Key points
- Measure the agency by net revenue, not billings. Pass-through spending on media or production inflates billings and understates the true margin.
- Retainers and long-tenured clients are valued above project work. Buyers test notice periods, scope changes and how often clients review their agencies.
- Senior people carry the relationships. Buyers ask who the client trusts, who the strategic leaders are and what would happen if they left.
- Agencies can carry hidden credit exposure. Obligations to media vendors for campaigns that clients have not paid for are a working capital and debt-like issue.
The first question: which revenue?
An agency’s top-line number can mean very different things. Gross billings include everything the agency invoices clients, including media purchases and other third-party costs. Net revenue is what the agency keeps for its own services: fees, commissions and mark-ups on production. Two agencies with the same net revenue can differ enormously in billings.
Buyers analyze the business on net revenue. A margin calculated on billings looks tiny and is not comparable to anyone else’s. A margin on net revenue is the figure that matches how agencies and their buyers think. Accounting presentation also varies: depending on whether the agency acts as principal or agent, pass-through costs may be recorded gross or net, which changes reported revenue without changing the economics.
Public-market reference data
The January 2026 data for the advertising group, covering 52 US-listed firms, shows an enterprise value to EBITDA multiple of 12.0x and an EBITDA margin of 14.1%.[1][2]
Public-company reference data, United States, as of January 2026[1][2]
| Damodaran industry group | US-listed firms | EV / EBITDA | EV / EBIT | EBITDA margin | Gross margin |
|---|---|---|---|---|---|
| Advertising | 52 | 12.0x | 20.9x | 14.1% | 36.2% |
The multiples cover companies in each group that have positive EBITDA; the margins come from the same author's separate margin dataset for the same industry groups. Most private companies are smaller, less liquid and less diversified than these public companies, so private-company transaction multiples differ, and often sit below them. The Advertising group includes large agency holding companies and digital advertising businesses, so it is a loose proxy for an independent agency.
The group includes large agency holding companies and digital advertising businesses, with scale and diversification that independent agencies lack. The margin should be read with the net revenue question in mind, since public companies report in different ways. The guide to valuation multiples explains how buyers use such data.
What buyers examine
Revenue model. Monthly retainers, project fees, performance-based compensation and commissions have different predictability. Buyers separate them, review contract terms such as notice periods and see how often scope changes.
Client tenure and concentration. Clients tend to review their agencies periodically. Buyers want the length of each relationship, the history of reviews and losses, and the share of net revenue and profit from the largest clients. The customer concentration guide explains how this is priced.
Senior leadership and talent. The strategic and creative leaders define the agency’s reputation and hold the relationships. Buyers ask how many people each client knows and what happens if a leader leaves. The key-person risk guide covers the issues.
Utilization and staffing costs. Revenue per employee, billable utilization, use of freelancers and the cost of talent show whether margins are sustainable. Buyers also ask how the agency prices work that new tools can do faster.
Platform and channel dependence. Search, social, programmatic and marketplace channels all have owners with their own rules. An agency with certifications and results on a platform may benefit, but it also depends on it.
Media payables and credit exposure. In some arrangements an agency is liable to media vendors for campaigns whether or not the client has paid. Buyers review payables, receivables and the contract terms that govern who bears the risk.
Intellectual property and work product. Ownership of creative work, rights granted to clients and the use of third-party assets, music or talent are examined.
Adjustments and quality of earnings
In addition to the owner items in the add-back guide, agencies attract questions on revenue recognition for multi-month campaigns, accruals for unbilled work, treatment of freelancer costs, new business pitch costs and the stability of pass-through margins. The quality of earnings guide shows how these are tested.
Illustrative example: Why billings mislead
An agency has gross billings of $30,000,000, of which $24,000,000 is media passed through to clients. Its net revenue is $6,000,000, and its EBITDA is $1,200,000. On billings, the margin is 4 percent and the agency looks like a low-margin intermediary. On net revenue, the margin is 20 percent. A buyer who values the agency at an illustrative 6.0x EBITDA offers $7,200,000, and the seller’s story is better told in terms of net revenue and the profit it produces. The numbers are invented to show the distinction and are not benchmarks.
Structure of the deal
Agency deals often use earnouts linked to net revenue or profit for a year or two, as the earnout guide describes, because buyers know that clients can leave and talent can move. Working capital matters too, since receivables and media payables can be large. The working capital peg guide explains how the target is set. Key employees are often asked to sign retention agreements and non-solicitation covenants.
Who buys agencies
Strategic buyers include larger agencies and holding companies adding capabilities, industries or regions, consultancies, and technology companies building service arms. Private equity firms assemble platforms of independent agencies. Some clients, particularly large brands, hire agency talent in-house. Each buyer values different things: a strategic buyer may pay for capabilities and client access, while a financial buyer looks for stable earnings and room to grow.
Preparing for a sale
- Prepare net revenue and gross billings by client, with a clear reconciliation between them.
- Document retainer terms, notice periods and the history of client reviews.
- Summarize the roles of senior leaders in each major relationship.
- Analyze utilization and staffing costs.
- Review media payables, client credit and contract terms on liability.
- Confirm ownership of creative work and rights granted to clients.
The professional services series covers related industries.
Frequently asked questions
Why do buyers ask for net revenue?
Billings include the cost of media and other items bought on the client’s behalf, which the agency passes through with little or no margin. Net revenue, sometimes called fee income or gross income, shows what the agency earns for its own work. It is the measure against which margins and sizes are compared.
How do buyers view project-based creative work?
As less predictable than retainers. Projects depend on new wins each year and on the client’s budget cycle. Buyers examine the pipeline, repeat project rates and the share of revenue from clients who have used the agency for several years.
Does dependence on a single ad platform matter?
Yes. An agency that builds its results on one platform is exposed to changes in its rules, fees and algorithms, and to the platform’s relationship with the agency. Buyers ask about platform certifications, spending by platform and the agency’s ability to move clients to other channels.
Are agency earn-outs common?
They are used often, because clients can leave quickly and buyers want sellers invested in retention. Terms commonly link payments to revenue, net revenue or profit over a period. Sellers should understand how the measure is defined and who controls the accounts after closing.
Need a valuation you can use in a sale or acquisition decision?
The Impetus Group prepares transactional valuations from the standpoint of strategic and financial buyers. A valuation is a standalone engagement with its own scope and fee, and it can be the first step before a sale or acquisition process.
Related guides
- Customer Concentration and Valuation: How Buyers Price the Risk: Why buyers pay less for businesses that depend on a few customers, how they measure concentration, and what owners can do to reduce the discount before a sale.
- Key-Person Risk: How Owner Dependence Affects Valuation: How buyers measure owner dependence, why it lowers value and shapes deal structure, and what an owner can change in the years before a sale to reduce it.
- Quality of Earnings Report: What It Is and What Buyers Test: A quality of earnings report tests whether a company’s reported profit is real and repeatable. See what buyers examine, how it affects price and how sellers prepare.
- Net Working Capital Peg: How the Working Capital Adjustment Works: The working capital peg sets the level of working capital a seller must leave in the business at closing. See how it is calculated, negotiated and adjusted.
More in professional and white-collar services
- Engineering and architecture firms: How buyers value engineering and architecture firms: backlog, utilization and multiplier, work in process, licensed ownership rules, liability and deal structure.
- Accounting and tax firms: How accounting and tax practices are valued: recurring fees, client retention, service mix, seasonality, staff and succession, ownership rules and deal structure.
Sources
- Enterprise Value Multiples by Sector (US), data as of January 2026. Aswath Damodaran, NYU Stern School of Business. Accessed October 8, 2026.
- Operating and Net Margins by Sector (US), data as of January 2026. Aswath Damodaran, NYU Stern School of Business. Accessed October 8, 2026.
This guide is general education. It is not a valuation opinion, appraisal, investment advice, or legal or tax advice. How these guides are made.