The 20 Percent Problem: Why Every PE Portfolio Company Is Wasting a Fifth of Its Ad Budget, and How to Find It in 14 Days

Tiger Tracks · Eye of the Tiger · Private Equity · October 2026

Private equity funds are leaning on operating discipline. BDO's 2025 survey found cash preservation rising sharply as a priority, with 39% of fund managers ranking cash flow management as their most impactful lever, up 16 percentage points from before April 2025's tariff announcements [1]. Alvarez and Marsal's 2026 European value creation report found that margin improvement now accounts for roughly half of EBITDA growth in exited European PE investments [2].

Marketing budgets sit squarely in that frame. They are large, they are often managed by habit, and the most common sources of waste are well documented. This guide sets out five of those sources, how each shows up in the data, and a 14-day plan an operating partner can run with a management team.

1. The 20 Percent Figure Is a Heuristic to Test

The 20 percent figure is not a universal constant and is not drawn from a single study. It synthesizes failure modes documented repeatedly in practitioner research: branded search cannibalization [3][4], creative fatigue [5][6] and attribution misalignment [7][8], along with audience overlap and allocation inertia. Some portfolio companies will find far less waste; others will find more. For a skeptical CMO, the right test is practical and rapid: run the diagnostic below against a single brand or business unit and measure the realized savings. That result shows whether a company sits closer to 5 percent, 20 percent or above.

2. Branded Search Often Buys Clicks a Brand Would Get Anyway

When a company already ranks at the top of organic results for its own name, paid bids on branded terms risk buying clicks that would otherwise be free. Seer Interactive's guidance is that if branded terms are taking 20 to 30 percent or more of a paid search budget, it is worth digging in, and that testing is warranted when most of its warning signs apply [3]. Automated campaign types add complexity: Optmyzr's 2025 data study found Performance Max overlapping with Search campaigns across all match types, including exact match, and noted that even with brand exclusions enabled, Performance Max can still trigger ads on fuzzy brand matches [4].

Branded search is not always waste. In Haus's 2025 analysis of branded search incrementality tests, 82% of brands facing three or more competitors on their brand terms measured a statistically meaningful lift, compared with 35% of brands facing low competition [9]. The diagnostic action is simple: pause or isolate branded paid search for a test window and measure net conversions and total traffic. If conversions hold steady and cost drops, the budget can be reclaimed; if competitors are conquesting the brand, the spend may be defending real revenue.

3. Creative Fatigue Shows Up in the Data Before the Budget

Rising cost per click or cost per conversion, falling click-through rates and declining engagement across successive exposures are the telltale signs [6]. Meta's analytics team, studying its own ads data in 2023, estimated that the likelihood of a conversion falls by about 45% after four repeated exposures, and that guidance to add new creative to fatigued ad sets improved conversion rates by about 8% on average in high-fatigue cases [5].

The fix is rarely expensive. Rotate top-performing variants, introduce modest refreshes to imagery and copy, and set a creative-refresh cadence tied to frequency and recency metrics. Because the gains come from existing spend working harder, creative refresh is one of the lowest-friction interventions in the diagnostic.

4. Attribution Models Can Steer Budget to the Wrong Channels

Attribution is both a technical and a political problem. Last-click models give all the credit for a conversion to the final interaction, which can lead to underinvestment in the channels that build awareness [7]. Internal teams then compete for credit instead of collaborating for outcomes, and attribution becomes a tool to validate budgets rather than to find value [8]. For data-driven PE portfolio companies, practitioners recommend pairing attribution with marketing mix models to see how all channels contribute [10].

A focused diagnostic examines tagged conversion paths, compares last-click results with multi-touch views and incrementality tests, and flags where model choice materially changes channel rankings. Where misalignment is found, recalibrate the model or run small holdout tests to reassign budget with confidence.

5. Audience Overlap Inflates Cost and Erodes Engagement

Overlap occurs when the same people are targeted by multiple campaigns, platforms or brands inside a portfolio. In email programs, recipients bombarded by multiple messages are more likely to disengage or unsubscribe, and teams lose time manually suppressing audiences [11]. In paid media, the same overlap means paying more than once to reach the same person. The common root cause is decentralized lists and weak suppression rules.

The fixes are straightforward: centralize identity signals where possible, enforce suppression thresholds across platforms and build a simple overlap dashboard. The objective is not perfect de-duplication but removing the obvious overlap that drives cost inflation and engagement decline.

6. Channel-Allocation Inertia Traps Budget in Legacy Channels

Organizations keep funding the same channels for practical reasons: legacy contracts, organizational incentives and comfort with known performance. Budget guides describe channel legacies that nobody questions and incremental budgeting in which last year's number becomes this year's floor [12], and warn that the biggest allocation mistake is treating an initial split as permanent [13].

Overcoming inertia takes a cadence of small reallocations backed by clear hypotheses and rapid measurement. Prioritize tests large enough to be informative but small enough to limit downside, and revisit allocation every quarter with fresh data and clear criteria for continuing, scaling or halting a channel.

7. A 14-Day Diagnostic Plan for Operating Partners

The plan below focuses on decision-grade evidence and rapid handoffs rather than a long consulting engagement.

The fastest start is a single brand-level test: pause or isolate branded paid search for a short window, refresh creative on the worst-performing channel and run a small holdout to check attribution assumptions. That cadence supports the PE priorities of preserving cash and accelerating revenue while keeping disruption to the management team low [1]. How quickly it produces savings depends on data access and the team's capacity to act.

8. Success Is Measured in Reclaimed and Redeployed Budget

Success is not a single percentage. It is a set of operational outcomes: reclaimed budget that funds growth experiments, measurable improvement in conversion efficiency, clearer attribution-informed budgeting and reduced audience fatigue. Track a small set of KPIs: total marketing spend, cost per incremental conversion (using holdouts where possible), creative refresh cadence and the engagement that follows, and overlap reduction. Document the playbook and hand off runbooks to the internal team so the gains persist after the diagnostic ends.

Conclusion

Waste in a marketing budget rarely announces itself. It hides in branded clicks that would have come anyway, in creative that wore out months ago and in attribution models that reward whatever is easiest to count. Whether a portfolio company's figure is 5 percent or 25 percent, the way to find it is the same: test, measure and reallocate on evidence. Automated bidding and AI-driven analysis can surface the signals faster, but deciding what to pause, what to protect and what to fund is a judgment call for people who understand the business. That is the Human-Led, AI-Augmented advantage.

References

1. BDO USA. (August 12, 2025). Private Equity Anticipates Accelerating Deal Activity, BDO Report. https://www.bdo.com/insights/press-releases/private-equity-anticipates-accelerating-deal-activity-bdo-report
2. Alvarez and Marsal. (May 18, 2026). European Private Equity Value Creation Report 2026. https://www.alvarezandmarsal.com/thought-leadership/european-private-equity-value-creation-report-2026
3. Seer Interactive, Hunsaker, B. (June 21, 2025). Are You Cannibalizing Your Own Branded Search? https://www.seerinteractive.com/insights/are-you-cannibalizing-your-own-branded-search
4. Optmyzr, Vallaeys, F. (July 31, 2025). Is Performance Max Cannibalizing Your Search Campaigns? Our New Data Study Says... Probably. https://www.optmyzr.com/blog/is-pmax-cannibalizing-search/
5. Analytics at Meta. (May 10, 2023). Creative Fatigue: How advertisers can improve performance by managing repeated exposures. https://medium.com/@AnalyticsAtMeta/creative-fatigue-how-advertisers-can-improve-performance-by-managing-repeated-exposures-e76a0ea1084d
6. Funnel. (September 18, 2025). Ad fatigue: what it is, why it kills ROI and how to prevent it. https://funnel.io/blog/ad-fatigue
7. Tallwave, LoBosco, S. (October 28, 2024). 4 scary mistakes you're making with your marketing attribution model. https://tallwave.com/blog/marketing-attribution-model-mistakes/
8. Channel99. (June 2, 2025). Attribution Deep Dive Series Part One: Marketing Attribution Is a Mess. How Did It Get So Bad? https://www.channel99.com/articles/marketing-attribution-is-a-mess-how-did-it-get-so-bad
9. Haus, Horner, T. (September 29, 2025). When Is Branded Search Worth the Investment? https://haus.io/blog/when-is-branded-search-worth-the-investment
10. Scale Marketing. (September 24, 2024). 5 Challenges (and Solves) for Data-Driven Private Equity Firms. https://www.scale-marketing.com/blog/challenges-for-data-driven-private-equity-firms/
11. Deselect. (April 29, 2025). Managing Audience Overlap: A Critical Imperative for Higher Education Marketing. https://deselect.com/blog/managing-audience-overlap-a-critical-imperative-for-higher-education-marketing/
12. Digital Applied. (April 17, 2026). Marketing Budget Allocation Guide 2026: By Channel. https://www.digitalapplied.com/blog/marketing-budget-allocation-guide-2026-by-channel
13. Cometly. (March 3, 2026). How to Allocate Your Marketing Budget Across Channels: A Data-Driven Step-by-Step Guide. https://www.cometly.com/post/marketing-budget-allocation-across-channels

Published by Tiger Tracks. Eye of the Tiger Intelligence Series.