Does Client Media Count as Your Agency's Revenue? Your Contract Decides, and So Does Your Conduct

By Craig S. Cody, CPA, Certified Tax Coach.

Here's the answer up front. Client media running through your books is your revenue for tax purposes only if you're the principal on that media. If your contracts make you your client's agent, and your conduct matches the contracts, the media is your client's money passing through your hands, and it doesn't belong in your gross receipts.

The test isn't what your P&L looks like. It's who controlled the media before the client got it, who was on the hook to the vendor if the client didn't pay, and where the money sat in between.

Why does that matter? Because a $6 million fee agency that places $28 million of media shows $34 million of gross receipts if that media is counted, and $6 million if it isn't. There's a line at $32 million that decides whether you can file on the cash method and whether your interest expense is fully deductible. Most agency owners have never heard of it, and a generalist CPA has no reason to know that media is the thing that crosses it.

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I've spent 23 years reading agency returns, and my firm works with more than 70 marketing and advertising agency owners every month. No other kind of business has this problem in this shape. Here's how it works, what the contract has to say, and the part the contract can't do for you.

Why Does Media on the Books Matter for Tax?

Because of one number: $32,000,000.

Section 448 of the tax code says a corporation or partnership can use the cash method only if its average annual gross receipts over the prior three tax years don't exceed that figure, for tax years beginning in 2026. Pass the test and you can pay tax on what you've actually collected rather than on what you've invoiced. The same test decides whether you're exempt from the Section 163(j) limit on deducting business interest.

Fail it because of money that was never yours, and you lose both. You're back on the accrual method, paying tax on receivables your clients haven't paid, and your interest deduction is capped.

Two more things about the test that catch agencies specifically.

It aggregates. Everyone treated as a single employer under the controlled-group and affiliated-service-group rules counts as one taxpayer. If you've set up an affiliated media-buying entity, its receipts and yours are tested together, and you'll have to run the affiliated-group analysis before you even get to the media question.

It's a three-year average. One big media year doesn't fail you by itself. Three of them do. Which means the fix, if you need one, has to be in place before the third year, not discovered when the return is due.

What Does "Gross Receipts" Actually Mean Here?

The regulation defines it as total sales, net of returns and allowances, plus all amounts received for services, plus investment income. It excludes two things by name: repayments of loans, and sales taxes that are legally imposed on the customer where the business merely collects the tax and remits it.

Read that last exclusion again, because it's the shape of the whole argument. Money you collect on someone else's behalf and pass along, where the legal obligation is theirs and not yours, isn't your receipt. The regulation says so about sales tax. It says nothing about media.

So the media position doesn't come from a line in the regulation. It comes from a general principle of tax law that money you hold as someone's agent isn't your income, and from a case that happens to be about advertising.

In 1950 the Tax Court decided Seven-Up Co. v. Commissioner. Seven-Up's bottlers paid into a national advertising fund that the company administered. The IRS said those contributions were Seven-Up's income. The court disagreed: the money was a trust fund the company held as agent for the bottlers, restricted to buying advertising for them, and the company was a conduit for passing it to the advertising agency. Even the fact that Seven-Up commingled the fund with its own cash didn't change its character.

That's the case. But notice what carried it. Not a label. The court looked at what everyone intended, what the money was restricted to, who bore the risk, and what actually happened to the funds. Which brings us to the accounting test, because it asks the same questions.

What Makes an Agency a Principal Instead of an Agent?

The accounting standard, ASC 606, frames it as one question: did you control the media before it transferred to your client? If you did, you're the principal and you report the full amount as revenue. If you didn't, you're the agent and you report only your fee.

The standard gives three indicators of control, and no single one decides it.

• Primary responsibility for fulfilling the promise. If the ad doesn't run, who owes the client a remedy: you, or the platform?
• Inventory risk. Did you buy media before you had a client for it? Are you holding unsold inventory, or an upfront commitment you signed before any client authorized it?
• Discretion in setting the price. Do you decide what the client pays for the media, or do you pass through the vendor's net cost and charge a separately stated fee?

Here's the honest part, and it belongs in the same breath as everything above. Gross can be correct. An agency that buys inventory on its own account, owns the vendor relationship, eats the shortfall when a campaign underdelivers, and sets the price it resells at is a principal. Plenty of media agencies genuinely are. The media is their revenue and the position is right.

Tax law isn't bound by the accounting standard. But the facts the standard asks about are the same facts a revenue agent will ask about. I've seen tax returns where the P&L shows gross revenue and the return shows gross less the media spend. Totally incorrect. That's two stories on the same facts, and no contract fixes it. Pick one answer and hold it everywhere.

What Does the Contract Have to Say?

Ten things. Your lawyer drafts the language. My job is to tell you what each provision has to do and what breaks it.

1. Appoint the agency as agent, in those words. The master services agreement should say the agency acts solely as the client's agent for planning, negotiating, placing and administering media, that it doesn't resell media to the client, and that it acquires no interest in the inventory. Agency status has to be stated, not implied. That last part is doing real work: it negates the control test and the inventory-risk indicator at the same time.

2. Name the client to the vendor. Every insertion order or broadcast order should identify the client by name, with the agency disclosed as agent. An undisclosed-principal arrangement is close to indefensible on these facts. If a particular vendor relationship requires the client to stay anonymous, carve that spend out and treat it as principal. Don't try to make one theory cover both.

3. Sequential liability. The agency is liable to the vendor only for amounts it has actually received from the client for that media; the client stays liable for the rest. This is the single most important provision, because it removes commitment risk, which is the indicator that most often pushes an agency into principal treatment. The 4A's has published this standard since 1991, and it sits in the 4A's and IAB standard terms for digital media.

Here's what the clause can't do. A survey of 300 advertising executives fielded in 2020 found that only 14% believe sequential liability is the industry standard, and 77% said media companies treat agencies as principals at least occasionally. A vendor that refuses sequential liability is a vendor where you're the principal, on that spend, no matter what your MSA says. So the MSA should also oblige the agency to include the provision in every purchase authorization and to try to get the vendor to acknowledge it. Where the vendor won't, the position is different, and you should know that going in.

4. Client approval before placement, with no discretion. The agency commits the client to nothing without prior written approval of the plan, the flight dates and the estimated net cost, and has no discretion to place outside an approved plan. Discretion in price and selection are principal indicators. This negates both.

5. Bill media at net cost, and state the fee separately. Media invoiced at the agency's actual net cost, without markup, as its own line. The agency's compensation stated separately, as a commission or a fixed fee, and identified as the only compensation the agency receives on that media. Vendor invoices available to the client on request. A single blended number on the invoice tells an examiner you set the client's price. Never blend. And a fee is cleaner than a commission, because a commission is still a percentage of a number you might be seen to control.

6. Client money held as client money. Clients fund media before the flight starts. The agency holds those funds in a segregated account for the benefit of the client and the vendors, applies them only to that client's media, and treats them as something other than general assets. This is the provision most agencies skip and the one that helps most, because it's the Seven-Up fact pattern written into the contract.

It's also the provision where conduct has to match. A segregated account you sweep into operating cash is worse than no clause at all. If you're going to front media out of working capital, don't write this one. Write sequential liability harder instead.

7. Cancellation and short-rate charges land on the client. On the same terms the vendor imposes on the agency, with the agency obliged to give notice of deadlines. If the agency eats cancellation charges, it's carrying the risk of the inventory.

8. Rebates and vendor incentives, disclosed. Any rebate, volume discount, added-value credit or other consideration a vendor pays the agency that's attributable to a client's spend is either credited to the client or disclosed to the client in writing and kept as additional compensation. Records kept by client. Ten years ago the ANA commissioned a study of media transparency and found that cash rebates tied to spend were pervasive while the advertisers paying for the media didn't know about them or didn't receive them. Since then, silence on rebates reads as undisclosed agency discretion, which is a principal indicator and, separately, a client-relations landmine. Pick a branch and disclose it.

9. Records and audit. Vendor invoices, insertion orders and proof of performance kept for a set period and available to the client on reasonable notice.

10. Rights held for the client. Whatever rights exist under the media purchase authorizations are held by the agency for the client's benefit and assigned to the client on request or on termination. Media that belongs to the client if you disappear was never yours.

What Breaks the Position Even When the Contract Is Right?

The contract is half of it. Here's the half that shows up in a bank statement.

• Paying vendors out of operating cash well ahead of client funding, while the MSA recites sequential liability. You've taken the commitment risk the clause says you didn't.
• Vendor contracts in the agency's name only, with no client identified on the insertion order.
• Upfront or annual commitments the agency signs before any client authorization exists. That's inventory risk by definition.
• Blended invoices, or a "media management" line that isn't tied to a disclosed net cost.
• Gross presentation in the financial statements or the bank package while the return takes a net position. You've told two different stories to two different readers, and both of them keep copies.
• An affiliated media-buying entity, which also pulls the aggregation rules into the test before you've even asked the media question.

Every one of these is a decision made during the year. None of them can be fixed in March.

What Should Be in the File?

Whatever you conclude, write it down while it's happening.

A short memo per client engagement: which indicators are present, which contract sections support the position, and the resulting treatment of that client's media in gross receipts. Then, once a year, the Section 448 computation showing the aggregated group on both bases, gross and net, with the difference.

If the gross figure is anywhere near $32 million, that file is what keeps this from becoming an argument you have to reconstruct three years later from memory, in front of someone who's already decided.

What If You Really Are the Principal?

Then the media is your revenue, and the plan changes rather than ending.

You may lose the cash method once the three-year average crosses the line, which means paying tax on invoices your clients haven't paid. You may lose the full interest deduction. Those are real costs, and they belong in your planning conversation the year before they hit, not the year they do. I've written about the accrual-to-cash decision as one of the five levers for agencies past $1 million in agency gross income, and the timing of that change is where the money is.

One more thing that doesn't change either way. Agency gross income, what's left after the pass-throughs, is the number you run the agency on. That was true before you read this and it's true whether the tax return says gross or net. The tax label decides what the IRS sees. It doesn't decide what your margin is. The full map of the decisions that set an agency owner's bill, this one included, is in my tax planning guide for marketing and PR agency owners.

Who This Is For, and Who It Isn't

This is for owners of marketing, advertising and PR agencies with meaningful client media moving through their books: enough that the gross figure is a multiple of the fee figure and the $32 million line is within sight.

It isn't for the agency that doesn't touch media. If your clients contract directly with the platforms and you've never written a vendor a check on a client's behalf, you don't have this problem, and you can spend the hour on your salary instead.

And it isn't a substitute for the lawyer who drafts your MSA. The ten provisions above describe what the contract has to accomplish. The language is theirs to write.

Frequently Asked Questions

Does client media spend count toward my agency's gross receipts for tax purposes?

Only if your agency is the principal on that media. If your contracts appoint the agency as the client's agent, name the client to the vendor, limit the agency's liability to funds received, and the agency's conduct matches, the media is the client's money passing through and isn't the agency's gross receipt. If the agency buys inventory on its own account, sets the price and carries the risk, it is.

What is the Section 448 gross receipts test for 2026?

A corporation or partnership meets the test if its average annual gross receipts for the three prior tax years don't exceed $32,000,000, for tax years beginning in 2026. Passing it allows the cash method and exempts the business from the Section 163(j) interest limitation. Receipts of affiliated businesses treated as a single employer are aggregated.

What is sequential liability in advertising?

A contract term under which the agency is liable to a media vendor only for amounts the client has actually paid the agency for that media, and the client remains liable for the rest. The 4A's has published it as a standard since 1991. It isn't universally accepted by vendors, so it has to be included in each purchase authorization and acknowledged where possible.

Is it wrong for an agency to report media as revenue?

No. Gross reporting is correct for an agency that controls the media before it reaches the client: buying inventory, owning the vendor relationship, setting the resale price and carrying the risk. The problem is inconsistency, not gross reporting itself: a financial statement that says gross and a tax return that says net on the same facts.

Can my agency switch to the cash method if we're under $32 million?

Generally yes, through a formal accounting method change on Form 3115 with a catch-up adjustment in the year of change. It's a timing benefit, not a permanent one, and it's covered separately in the five levers article.

What should the agency keep on file to support agent treatment?

A memo per client engagement identifying which control indicators are present and which contract provisions support the treatment, plus an annual Section 448 computation showing the aggregated group's gross receipts on both a gross and a net basis. Written contemporaneously, not reconstructed later.

Let's Talk

None of this is a trick. It's the difference between being the person who spends a client's money for them and the person who sells them something. Both are legitimate. Only one of them puts $28 million on your return.

If you want to know which one you are, that's a specific answer, and it takes reading your MSA and your last three years of receipts side by side. Book a Free Tax Analysis and send both.

Book a Free Tax Analysis

Filing a return isn't a tax strategy. Let's talk.

Craig S. Cody is a CPA, Certified Tax Coach, and retired NYPD Lieutenant. His firm works with more than 70 marketing and advertising agency owners every month, helping them keep more of what they make through proactive tax planning.

This article is general education, not advice for your specific situation. Confirm your own facts with your advisor before acting.