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The latest evidence points to rapid growth in paid creator advertising, but there is no single global “influencer marketing market size” or universal ROI figure. The Interactive Advertising Bureau (IAB) projected $37 billion in U.S. creator-economy ad spend for 2025, up 26% year over year, and expected $44 billion in 2026. That is an advertising-spend projection—not total creator income or every form of influencer activity. Surveys and effectiveness data show rising budgets, broad use of creator content in paid media, and stronger long-term than short-term returns in one UK effectiveness database, with results depending heavily on objective, attribution method, creative quality and time horizon.
The headline influencer marketing statistics for 2026
| Statistic | Source, date and population | What it measures |
|---|---|---|
| $37 billion projected U.S. creator-economy ad spend in 2025; 26% annual growth | IAB, 2025 outlook | Intentional U.S. advertising spend placed with or around creators; not all creator-economy revenue |
| $44 billion expected U.S. creator-economy ad spend in 2026 | IAB, 2025 outlook | Projection, not a finalized 2026 result |
| 80% planned to increase creator budgets in 2026 | Northwestern University Medill/Retail Analytics Council, June 2026 survey of 209 senior marketing decision-makers | Reported budget plans among organizations already investing in creator marketing |
| 91% had an always-on creator-program component | Northwestern, June 2026 | 62% reported a hybrid model and 29% a fully continuous model |
| 77% said creator content outperformed traditional branded ad creative | CreatorIQ with Sapio Research, May 2026 survey of 100 U.S. and U.K. marketing leaders | Marketer-reported comparison, not a randomized causal test |
| Short-term influencer ROI index: 99 versus 100 for all channels | IPA, 2025; 59 UK campaigns | Relative effectiveness index, not a cash-return multiple |
| Long-term influencer ROI index: 151 | IPA, 2025; 18 UK campaigns | Relative long-term effectiveness index |
| 75% of brands had room to scale influencer investment | Circana, June 22, 2026 release | Marketing-mix-modeling and proprietary retail-data analysis; detailed sample is not stated in the public release |
These figures are not interchangeable. They cover different countries, populations, definitions and methods, so a survey percentage should not be presented as a market total or as independently measured sales lift.
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How much are brands spending on influencer marketing?
IAB’s U.S. creator-advertising projection
IAB estimated U.S. creator-economy advertising at $37 billion in 2025, a 26% year-over-year increase. Its outlook expected the figure to reach $44 billion in 2026. IAB compared the 2025 growth rate with 5.7% for the broader media industry.
The same IAB series reported $13.9 billion in 2021 and $29.5 billion in 2024, meaning measured U.S. creator advertising more than doubled over that period. IAB also reported that 48% of ad spenders considered creators a “must buy”.
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IAB’s measure is deliberately narrower than total creator-economy or influencer-industry revenue. It does not automatically include affiliate commissions, subscriptions, tips, merchandise or incidental advertising placements. The $44 billion number is therefore a forecast for a defined U.S. ad-spend category, not a global 2026 market-size fact.
What brands say they will do with budgets
In Northwestern Medill’s June 2026 survey of 209 senior marketing decision-makers, 80% said their organization planned to increase creator budgets in 2026. A quarter expected increases above 10%, while 3% planned cuts. Because respondents were already investing in creator marketing, these percentages describe active buyers rather than every advertiser.
How companies are using creator programs
Always-on activity is now common
Northwestern’s respondents reported that 91% of creator programs had an always-on element: 62% used a hybrid of campaigns and continuous activity, and 29% operated fully continuously. The remaining 9% were mostly campaign-based.
Common campaign goals
IAB’s 2025 advertiser survey listed these creator-campaign goals:
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- 43%: awareness
- 41%: reaching new audiences
- 35%: reputation or trust
- 32%: online sales or conversions
Overall ROI was the top creator-campaign KPI for 40% of IAB respondents. A stated goal is not proof that the campaign achieved it, so goals and measured outcomes should be reported separately.
Creators in paid social advertising
Northwestern found that 92% of surveyed organizations ran creator content in social advertising. Seventy-three percent did so directly, and respondents that boosted creator content typically allocated 11%–40% of influencer budgets to boosting.
AI and operating infrastructure
Among Northwestern’s respondents, 93% had invested in AI and 84% intended to invest again in 2027. These are adoption figures for the surveyed organizations, not estimates for all marketers.
What outcomes do brands report?
Upper-funnel and sales-related effects
Northwestern respondents most often reported impacts on brand sentiment (60%) and awareness (58%); 49% reported a sales impact. These are answers to a reported-impact question, not an independently measured percentage increase in sales.
In a separate question about where creator recommendations influence the business, conversion and loyalty each scored 55%. Those responses should not be merged with the 49% sales-impact figure because the questions measure different things.
Trust signals consumers value
Northwestern’s respondents said creators were the most-trusted source for 44% of their audiences, compared with 34% for social-media ads and 22% for celebrities. The trust behaviors they associated with effective creators were clear product information (62%), transparency about paid relationships (60%), category expertise (54%) and honest comparison (51%).
Does influencer marketing deliver ROI?
It can, but the answer changes with the outcome window, the benchmark and the measurement model. The strongest quantified comparison in the supplied evidence comes from the IPA effectiveness databank.
IPA short-term results
IPA’s 2025 UK analysis gave influencer activity a short-term ROI index of 99, against an all-channel average of 100, based on 59 campaigns. Influencers generated 4.5% of short-term sales in that analysis. An index of 99 means performance was close to the all-channel benchmark; it does not mean £0.99 returned for every £1 spent.
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IPA long-term results
For 18 UK campaigns, IPA reported a long-term influencer ROI index of 151 and a 6.2% long-term sales contribution. It also reported a 3.35 long-term multiplier for influencer activity, compared with 3.27 for linear television. These findings come from a much smaller campaign base than the wider IPA databank, which covers 220 campaigns from 144 brands, 36 sectors and 28 markets, representing more than £133 million in influencer spend.
IPA notes substantial variation between campaigns and identifies brand–influencer fit and creative quality as important factors. The results support testing long-term effects rather than judging every program solely on immediate conversions, but they do not establish a universal influencer ROI multiple.
What does creator content do compared with traditional ads?
CreatorIQ with Sapio Research surveyed 100 marketing leaders in the United States and United Kingdom in May 2026. 77% said creator content outperformed traditional branded ad creative, including 43% who said it performed significantly better.
In respondents’ assessments, creator content outperformed traditional creative on click-through rate (65%), conversion rate (58%) and CPM efficiency (50%). These are reported marketer comparisons, not results from a randomized experiment that isolates creator content as the only difference.
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Only 57% said creator marketing was fully integrated into the same measurement framework as broader paid media. The main barriers were separating creator-driven paid performance from other creative (58%), securing usage rights (54%) and integrating with paid-media systems (52%).
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.How consumers discover and evaluate creator-led recommendations
Sprout Social’s 2026 research surveyed 2,250 consumers in the United States, United Kingdom and Australia, along with nearly 300 social professionals. It found that 17% of consumers checked a creator’s follower count before deciding whether to engage.
The same report found that 40% discovered products or services through employee-generated content monthly, while 61% believed companies should provide extra compensation when employees promote the company on social media. Employee advocacy is related to creator-style content but is not the same as paid influencer marketing, so these figures should not be added to influencer-spend totals.
Why influencer measurement is still difficult
Different measurement methods answer different questions
Northwestern reported brand-lift measurement at 61% and data-driven attribution at 30% among its respondents. Brand lift can estimate changes in awareness or perception; attribution attempts to assign outcomes across touchpoints. Neither method alone captures every long-term brand effect or proves causality in every campaign.
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Tool sprawl and rights management
Northwestern found that 86% of respondents used two or more tools, only 11% used one consolidated platform, and 90% wanted less complexity. CreatorIQ’s barriers—performance separation, usage rights and paid-media integration—show why a campaign can have good content but weak reporting.
Quick Recap
A practical framework for reading an ROI claim
- Define the geography and population. A U.S. ad-spend projection, a UK campaign database and a U.S./UK marketer survey cannot be combined into one number.
- Name the spend definition. State whether the figure covers paid creator advertising, total influencer fees, boosted media or a broader creator-economy category.
- Separate objective from outcome. Awareness, sentiment, conversions and loyalty require different success measures.
- State the time window. Short-term sales and long-term brand contribution can point in different directions.
- Identify the method. Label survey perception, brand lift, attribution, marketing-mix modeling, databank index or sales multiplier rather than calling all of them ROI.
- Document rights and amplification. Usage terms, paid boosting and platform placement affect both cost and reported performance.
What the 2026 evidence means for marketers
- Budget growth is real in the measured U.S. creator-advertising category, but the IAB projection should not be quoted as global influencer revenue.
- Always-on programs and creator assets in paid social are becoming standard among active creator marketers.
- Creator content may be valuable as paid creative as well as organic reach, but perception surveys do not replace controlled testing.
- Evaluate immediate conversions and delayed brand effects separately; the IPA data show why the time horizon matters.
- Require every performance claim to include its sample, geography, benchmark, metric and measurement method.
- Plan for usage rights, platform integration and consolidated reporting before scaling spend.
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