CMOs are the only C-suite leaders who must constantly sell the value of their own function. That's a tax on time, attention, and political capital, all paid before the actual marketing begins.

No CFO has been asked to justify why finance exists. No CRO has been asked to justify why revenue matters. Every C-suite executive defends their decisions. But only the CMO is forced to defend the function itself. This is The CMO Tax (a term I first heard from Karl Van den Bergh, CMO of Illumio). 

The Tax Is Invisible

What makes the CMO Tax insidious is that it doesn’t show up in any budget or org chart.

It shows up as meeting prep for board presentations designed to defend rather than inform. It shows up as stakeholder management with peers who treat marketing as a support function. It shows up as measurement frameworks built to prove, rather than improve, marketing. And it shows up as the cognitive load of knowing your function's existence is subject to scrutiny no other C-suite leader faces.

A 2024 study by Bospar, CMO Huddles, and Redpoint, surveying more than 120 B2B marketing leaders, found 67% report these challenges impacting their wellbeing, with 80% exercising less and 70% taking less time off. Sustained institutional doubt takes a measurable personal toll.

The Evidence

The 2018 CMO Survey, conducted with the American Marketing Association, Duke University, and Deloitte, found that 59.9% of marketers felt pressure from their CEO or board to prove the value of marketing. Not their results. The function itself.

More recently, Boathouse's fifth annual CEO study found overall CEO confidence in the CMO role declined to 43%, with overall CMO A-grades dropping to just15%.

And McKinsey, in partnership with the Association of National Advertisers, found that CEO-CMO misalignment actually increased by 20% between 2023 and 2025, with CMOs increasingly being repositioned as executors of strategy rather than creators of it. 

Why The CMO Tax Persists

The CMO Tax has structural roots. 

First, the title itself: Marketing is the only C-suite function named after an activity rather than an outcome. The CFO owns financial health. The CRO owns revenue. The COO owns operational performance. The CMO owns... marketing. When every other C-suite title implies a business outcome, a title named after the activity invites other executives to ask: what is this actually for? Some CMOs have begun addressing this by rebranding as Chief Market Officers, signaling a mandate for market ownership rather than marketing management. 

Another reason: Every executive has been a consumer of marketing. Nobody questions the CFO's financial models on the grounds that they use a bank account. But exposure to advertising and brand gives most C-suite executives a sense of familiarity with marketing that they don't feel about finance or engineering. And that familiarity tends to understate the actual discipline. 

But the hardest reason is the inherent complexity of marketing. B2B buying is a non-linear system involving six to sixteen people, months of anonymous research that begins long before any vendor contact, and brand impressions formed months or years earlier. These variables interact and compound in ways that produce outcomes but resist attribution. When a deal closes, you can see the result. You almost never know which specific marketing touches tipped the decision.

This is not a data problem that better tracking tools can solve. Other functions can point to a direct causal link between effort and outcome. Sales has bookings with dates. Finance has auditable cash flow. Product has adoption metrics with traceable causality. Marketing's leading indicators (brand awareness, content engagement, account reach) connect to revenue through a complex chain that takes quarters, sometimes years, to establish. Confident attribution claims (this campaign produced that deal) are largely a fiction the industry tells itself to satisfy a demand for precision the underlying system cannot support.

The quarterly reporting cycle has no patience for that reality. Brand is where the distortion is sharpest: it operates over years, shapes decisions formed well before any sales conversation begins, and produces no metric that can appear meaningfully in a quarterly forecast. Research by Binet and Field consistently links brand investment to stronger profit, market share, and more durable long-term growth, but none of that shows up next quarter, so the budget gets cut. CMOs reach for measurable proxies: MQLs, cost-per-lead, marketing-sourced pipeline. Those metrics are legible to marketers and opaque to everyone else in the room, reinforcing the perception of marketing as a separate function rather than a peer alongside finance and revenue. The company that underinvests in brand is responding to a system that cannot see it. The tax doesn't just consume time and attention; it cuts the investments that would, over time, reduce it.

What Reduces The Tax

The most powerful variable is CEO alignment. McKinsey's research found that companies placing marketing at the core of their growth strategy are 2X as likely to achieve 5+% annual growth. The CMO Tax is substantially lower in companies where the CEO shows that marketing matters with budget allocation, organizational positioning, and board-level framing of marketing's role. For CMOs evaluating opportunities, whether the CEO genuinely believes marketing creates enterprise value is an important test. Without that conviction, it will be hard to build the necessary trust.

Beyond CEO alignment, our research at The B2B CMO Project (via in-depth interviews with more than 50 senior marketing leaders) found a consistent pattern among those who have earned genuine C-suite trust: they operate as business executives first and marketers second.

That means knowing the CFO's cost of capital concerns before walking into a conversation about marketing investment, leading executive updates with customer or market insight rather than campaign performance, and replacing marketing-specific dashboards with pipeline velocity, win rate, net revenue retention, and customer acquisition cost. MQLs become internal operational tools at best, not board-level scorecards. Karl Van den Bergh takes this even further, running marketing metrics like a forecast call, with over-assigned targets and a sales-style forecast cadence. The goal is predictability, delivering on the short-term number consistently enough that the CFO stops questioning the function and starts trusting the leader.

The report documents five specific behaviors practiced by high-credibility CMOs: surfacing problems before being asked, delivering wins the whole company can see, building deep knowledge of every peer's business challenges, owning the customer voice at the executive level, and executing on commitments without exception. Credibility accrues through business contribution, not marketing advocacy.

The CMO who delivers on the short-term number first earns the political capital to invest in the longer-term work (“pipeline is permission”). The CMO who asks for brand investment before establishing execution credibility loses that argument almost every time. The right to lead strategically is earned through business contribution.

Conclusion

The CMO role is too important to remain in this condition. Marketing, done well, is how companies attract buyers, win deals, and retain customers: the mechanism of growth, not incidental to it. The CMO Tax costs companies the full value of what strong marketing leadership can deliver when leaders aren't spending their time and energy on justification.

The path forward is structural: organizational, relational, and behavioral. CMOs who understand this stop trying to solve a structural problem through marketing advocacy and start doing what every other C-suite executive does to earn institutional standing: putting the business first.

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Sources

"67% report challenges impacting their wellbeing, with 80% exercising less and 70% taking less time off" Underground Recession: The Hidden Strain on B2B CMOs. Bospar, CMO Huddles, and Redpoint. June 2024. Survey of 121 B2B CMOs. https://bospar.com/press-release/new-report-reveals-the-hidden-recession-is-taking-its-toll-on-cmos/ 

"59.9% of marketers felt pressure from their CEO or board to prove the value of marketing" The CMO Survey, August 2018, conducted with the American Marketing Association, Duke University's Fuqua School of Business, and Deloitte. https://www.ama.org/marketing-news/a-fetching-new-title-for-the-cmo/ 

"CEO-CMO misalignment increased 20% between 2023 and 2025" and "CMOs increasingly repositioned as executors of strategy rather than creators of it" McKinsey & Company / Association of National Advertisers (ANA), June 2025. Survey of more than 100 Fortune 1000 C-suite executives. Primary: https://www.mckinsey.com/capabilities/growth-marketing-and-sales/our-insights/the-cmos-comeback-aligning-the-c-suite-to-drive-customer-centric-growth

"Overall CEO confidence in the CMO role declined to 43%" Boathouse, 5th Annual CEO Study on Marketing and the CMO, April 2026. Survey of 150 CEOs, conducted January 6–26, 2026.  https://www.boathouseinc.com/insights/the-boathouse-fifth-annual-ceo-study 

"A buying decision involves six to sixteen people" Gartner reports 6–10 decision-makers for complex B2B purchases. The upper range reflects enterprise deal complexity. Gartner source: https://www.gartner.com/en/sales/insights/b2b-buying-journey 

"Twice as likely to achieve greater than 5% annual growth" McKinsey & Company, published in Harvard Business Review, March 2024. "Put Marketing at the Core of Your Growth Strategy." https://hbr.org/2024/03/put-marketing-at-the-core-of-your-growth-strategy 

"Research by Binet and Field consistently links brand investment to lower customer acquisition costs, higher win rates, and more durable growth" Les Binet and Peter Field, The Long and the Short of It, Institute of Practitioners in Advertising, 2013. Analysis of 996 advertising effectiveness case studies across 700 brands. IPA publication page: https://ipa.co.uk/knowledge/publications-reports/the-long-and-the-short-of-it  Accessible summary: https://www.marketingweek.com/les-binet-brand-performance/ 

The B2B CMO Imperative, The B2B CMO Project, 2026. https://www.b2bcmoproject.com/research 

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