Industry Benchmarks · Top 10
Top 10 Media Advertising CPM and Revenue per Subscriber KPIs in 2027
Direct answer
CPM is the top media advertising KPI in 2027, followed by revenue per subscriber and ARPU. In Q3 2026 Spotify reported Premium ARPU of €4.95, Netflix reported $12.9B of revenue without a dollar ARM figure, and Roku’s advertising revenue rose 23% to $727 million. No neutral CPM or RPM benchmark was found, so this page gives formulas and says so where figures are missing.
At a glance
| # | Pick | Formula | Best for |
|---|---|---|---|
| 1 | CPM (Cost per Thousand Impressions) | CPM = revenue per one thousand impressions, that is revenue divided by impressions, multiplied by 1,000 (Google Ad Manager Help) | Publishers and streamers selling advertising by the impression, since CPM prices every sale |
| 2 | Revenue per Subscriber (ARM) | Total revenue divided by the number of subscribers (Wikipedia, average revenue per user article); for a subscription service, use subscription revenue and paying subscribers | Subscription news, streaming and audio businesses judging what each paying account is worth |
| 3 | Premium ARPU (Average Revenue per User) | Total revenue divided by the number of subscribers (Wikipedia, average revenue per user article) | Services that want one number showing the effect of price rises and plan mix on each paying account |
| 4 | RPM (Revenue per Thousand Impressions) | Page RPM = (Estimated earnings / Number of page views) * 1000 (Google AdSense Help) | Publishers comparing earnings per thousand page views across sites, sections and ad layouts |
| 5 | Ad Fill Rate | Total fill rate = (# Total impressions) / (# Total ad requests) (Google Ad Manager Help) | Ad operations teams checking how much of the available inventory actually serves an ad |
| 6 | Sell-Through Rate | Sell-through rate = (reserved impressions / forecasted impressions × 100) (Google Ad Manager Help) | Sales teams selling reserved, sponsorship or guaranteed ad inventory |
| 7 | Viewability Rate | Viewable Rate = Viewable Impressions / (Viewable Impressions + Non-Viewable Impressions); the guideline’s example is 300 viewable of 500 measured, a 60% rate | Advertisers and publishers who need a shared definition of an ad that was actually in view |
| 8 | Subscriber Churn | Customers lost in a period divided by customers at the start of the period, multiplied by 100 (Wikipedia, churn rate article) | Any subscription news, streaming or audio business, since every sign-up only pays off if the customer stays |
| 9 | Advertising Revenue Growth | Advertising revenue in the period against the same period a year earlier, the basis Roku and Spotify report it on | Ad-supported media comparing their own growth with the market |
| 10 | Subscriber Lifetime Value (LTV) | (Avg Monthly Revenue per Customer * Gross Margin per Customer) ÷ Monthly Churn Rate (Wikipedia, customer lifetime value article) | Subscription media deciding how much to spend to win a subscriber |
Pick by what you want
Best overall
CPM (Cost per Thousand Impressions)
Best for subscriptions
Revenue per Subscriber (ARM)
Best for pricing power
Premium ARPU (Average Revenue per User)
Best for publishers
RPM (Revenue per Thousand Impressions)
Best for ad ops
Ad Fill Rate
Best for retention
Subscriber Churn
The ranking
1
CPM (Cost per Thousand Impressions)
Answrs VerdictThe ad-pricing KPI.
Formula: CPM = revenue per one thousand impressions, that is revenue divided by impressions, multiplied by 1,000 (Google Ad Manager Help)Denominator choice: Google lists three Ad Exchange eCPM versions: revenue per 1,000 ad requests, per 1,000 responses served, or per 1,000 impressions; the further down the delivery chain the denominator sits, the higher the CPMSpotify, Q3 2026: Music advertising growth was driven by more impressions sold, partly offset by softness in pricing; the deck gives no CPM figurePublished benchmark: None found: IAB’s April 16, 2026 digital ad revenue release publishes no CPM figures, and no neutral source cited here does
CPM is revenue per thousand impressions, and it prices every ad sale. Spotify said in Q3 2026 that music advertising grew on more impressions sold, partly offset by softer pricing, but no source cited here publishes a CPM average.
Go ifPublishers and streamers selling advertising by the impression, since CPM prices every sale
Skip ifYou need an industry-average CPM; no neutral dated benchmark is published in the sources cited
Why #1 over #2: It is the price on every impression sold, which is why it ranks first.
2
Revenue per Subscriber (ARM)
Answrs VerdictThe per-account revenue KPI.
Formula: Total revenue divided by the number of subscribers (Wikipedia, average revenue per user article); for a subscription service, use subscription revenue and paying subscribersNetflix label: Netflix’s Q3 2026 shareholder letter, dated October 20, 2026, defines ARM as average revenue per membershipNetflix, Q3 2026: Revenue grew 12% year over year to $12.9B (11% F/X neutral), driven primarily by subscription revenue from more memberships and higher pricingNetflix ARM figure: Not published: the letter cites ARM growth as a goal but gives no dollar ARM figure or membership count
Revenue per subscriber shows what each paying account is worth. Netflix reported $12.9B of Q3 2026 revenue, up 12%, driven by memberships and pricing, but its letter gives no dollar ARM figure.
Go ifSubscription news, streaming and audio businesses judging what each paying account is worth
Skip ifYou need Netflix’s own per-member dollar figure; its Q3 2026 letter does not state one
Why #2 over #3: It prices the subscription side directly, which ARPU does only per user.
3
Premium ARPU (Average Revenue per User)
Answrs VerdictThe price-and-mix KPI.
Formula: Total revenue divided by the number of subscribers (Wikipedia, average revenue per user article)Spotify, Q3 2026: Premium ARPU of €4.95, up 9.3% year over year (7.5% constant currency), driven by price increase benefits and partly offset by product and market mix; reported October 22, 2026Spotify revenue base: Premium revenue of €4,487 million, up 17%, on 306 million Premium subscribers, up 9%Roku, Q3 2026: Roku’s November 2, 2026 shareholder letter reports Platform revenue and Streaming Hours and gives no ARPU figure
ARPU is revenue divided by subscribers. Spotify reported Premium ARPU of €4.95 for Q3 2026, up 9.3%, on price increases partly offset by mix, and Roku gives none.
Go ifServices that want one number showing the effect of price rises and plan mix on each paying account
Skip ifYou compare companies directly; each defines revenue and users its own way and Roku gives no ARPU
Why #3 over #4: It is the best published example, but each company defines it differently, so it ranks below the general measure.
4
RPM (Revenue per Thousand Impressions)
Answrs VerdictThe publisher-yield KPI.
Formula: Page RPM = (Estimated earnings / Number of page views) * 1000 (Google AdSense Help)CPM versus RPM: RPM measures what the seller earned per 1,000 units of its own traffic, while CPM is revenue per 1,000 impressions; Google’s eCPM article shows the denominator can be ad requests, responses served or impressionsPublished benchmark: None found: no neutral, dated RPM benchmark for publishers appears in the sources cited hereRoku, Q3 2026: More than 80% of in-stream video ad impressions were delivered programmatically; Roku gives no RPM figure
RPM shows publisher yield per 1,000 page views. Google defines Page RPM as estimated earnings divided by page views times 1,000, and no neutral RPM benchmark is published in the sources cited.
Go ifPublishers comparing earnings per thousand page views across sites, sections and ad layouts
Skip ifYou want an industry RPM to compare against; none is published in the sources cited
Why #4 over #5: It measures the seller’s own traffic, where CPM measures impressions sold.
5
Ad Fill Rate
Answrs VerdictThe inventory-use KPI.
Formula: Total fill rate = (# Total impressions) / (# Total ad requests) (Google Ad Manager Help)Ad requests: Total ad requests are the sum of unfilled impressions and the total code served countPublished benchmark: None found: no neutral, dated fill rate benchmark appears in the sources cited hereRoku, Q3 2026: More than 80% of in-stream video ad impressions were delivered programmatically; that is the share sold by programmatic channel, not a fill rate
Fill rate is total impressions divided by total ad requests. Roku said more than 80% of its in-stream video ad impressions were delivered programmatically, which is not a fill rate, and no benchmark exists in the sources cited.
Go ifAd operations teams checking how much of the available inventory actually serves an ad
Skip ifYou need a benchmark to judge a fill rate against; none is published in the sources cited
Why #5 over #6: It shows unused inventory, but it says nothing about price.
6
Sell-Through Rate
Answrs VerdictThe reserved-inventory KPI.
Formula: Sell-through rate = (reserved impressions / forecasted impressions × 100) (Google Ad Manager Help)Terms: Forecasted impressions are the total projected impressions, reserved impressions are those held by existing line items, and available impressions are forecasted impressions that are not reservedNetflix, 2026 forecast: Netflix now expects 2026 ad revenue of about $2.7B versus about $3B previously, citing a slightly slower than expected rollout of some ad product capabilitiesPublished benchmark: None found: no neutral, dated sell-through benchmark appears in the sources cited here
Sell-through rate is reserved impressions over forecasted impressions. Netflix now expects about $2.7B of 2026 ad revenue versus about $3B before, citing a slower ad product rollout.
Go ifSales teams selling reserved, sponsorship or guaranteed ad inventory
Skip ifYou sell only programmatic inventory with no reservations
Why #6 over #7: It matters only where inventory is reserved ahead of time.
7
Viewability Rate
Answrs VerdictThe in-view KPI.
Standard definition: A display impression is viewable when at least 50% of its pixels are on screen for at least one continuous second; video needs 2 continuous seconds (MRC Viewable Ad Impression Measurement Guidelines, Version 1.0 Final, June 30, 2014)Formula: Viewable Rate = Viewable Impressions / (Viewable Impressions + Non-Viewable Impressions); the guideline’s example is 300 viewable of 500 measured, a 60% rateLarge ads: For display units of 242,500 pixels or more, equal to a 970 x 250 ad, a viewable impression may be counted at 30% of pixels for one continuous second if disclosedPublished benchmark: None found: the guideline defines the standard but gives no viewability rate benchmark, and no neutral rate is cited here
Viewability follows the MRC and IAB standard of 50% of pixels in view for one continuous second for display and 2 seconds for video. The guideline is dated June 30, 2014 and gives no average rate.
Go ifAdvertisers and publishers who need a shared definition of an ad that was actually in view
Skip ifYou need an average viewability rate; none is published in the sources cited
Why #7 over #8: It is the one KPI here with a neutral standard definition, but it does not measure revenue.
8
Subscriber Churn
Answrs VerdictThe retention KPI.
Formula: Customers lost in a period divided by customers at the start of the period, multiplied by 100 (Wikipedia, churn rate article)Netflix, Q3 2026: Globally and in the US, churn improved year over year and was better than forecast; the letter gives no churn rateSpotify, Q3 2026: The deck gives no churn rate; it reports 306 million Premium subscribers, up 9% year over yearPublished benchmark: None found: Wikipedia’s only figures are illustrations, such as 50 of 500 customers lost in a month giving 10%
Churn is customers lost divided by customers at the start. Netflix said churn improved year over year in Q3 2026 and beat its forecast, without giving a rate.
Go ifAny subscription news, streaming or audio business, since every sign-up only pays off if the customer stays
Skip ifYou need a public churn benchmark; the filings and sources cited here give none
Why #8 over #9: It drives lifetime value, but no public benchmark exists in the sources cited.
9
Advertising Revenue Growth
Answrs VerdictThe ad-demand KPI.
Formula: Advertising revenue in the period against the same period a year earlier, the basis Roku and Spotify report it onRoku, Q3 2026: Advertising revenue grew 23% year over year to $727 million, the ninth consecutive quarter of double-digit growthSpotify, Q3 2026: Ad-Supported revenue grew 10% year over year to €482 million (9% constant currency)IAB, full year 2025: Digital ad revenue reached $294.6 billion, up 13.9%; display $81.6B (up 9.8%), digital video $78 billion (up 25.4%) and podcast $2.9B (up 17.6%); release dated April 16, 2026
Advertising revenue growth compares a period with a year earlier. Roku’s rose 23% to $727 million in Q3 2026, Spotify’s Ad-Supported revenue rose 10%, and IAB reported digital ads up 13.9% in 2025.
Go ifAd-supported media comparing their own growth with the market
Skip ifYou need a pricing or yield view; growth alone mixes volume and price
Why #9 over #10: It shows demand, but it mixes volume and price.
10
Subscriber Lifetime Value (LTV)
Answrs VerdictThe payback KPI.
Formula: (Avg Monthly Revenue per Customer * Gross Margin per Customer) ÷ Monthly Churn Rate (Wikipedia, customer lifetime value article)Illustration: Wikipedia’s worked example: $100 average monthly spend * 25% margin ÷ 5% monthly churn = $500 LTV; it is an illustration, not a media benchmarkMedia companies: Not published: the Q3 2026 materials from Spotify, Netflix and Roku cited here give no LTV figureLink to other KPIs: LTV combines revenue per subscriber with churn, which is why it ranks as a derived KPI
Lifetime value divides monthly revenue times margin by monthly churn. Wikipedia’s example gives $500 from $100 monthly spend, a 25% margin and 5% churn, and no media company cited here reports LTV.
Go ifSubscription media deciding how much to spend to win a subscriber
Skip ifYou need a published LTV benchmark; none exists in the sources cited
How we ranked these
We ranked KPIs on how directly they price media advertising or subscriptions and how clearly a primary source defines them, using Spotify’s Q3 2026 shareholder deck, Netflix’s Q3 2026 letter, Roku’s Q3 2026 letter, the MRC and IAB viewable impression guideline, IAB’s April 2026 revenue release, Google’s Ad Manager and AdSense help pages and Wikipedia definitions. SEC EDGAR and some investor sites refused automated requests, so figures come from the companies’ own investor pages. Where no neutral benchmark exists, the page says so. Facts are taken from each maker's own published information; check the official site before you buy.
Questions people ask
What is the most important media advertising KPI in 2027?
CPM, revenue per thousand impressions, prices every ad sale. No neutral CPM benchmark is published in the sources cited, so compare against your own history and formula, not an industry average.
What is Spotify’s ARPU?
Spotify reported Premium ARPU of €4.95 for Q3 2026, up 9.3% year over year, on 306 million Premium subscribers, in its October 22, 2026 shareholder deck.
Does Netflix report revenue per subscriber?
Its Q3 2026 letter reports $12.9B of revenue, up 12%, and mentions average revenue per membership, but gives no dollar ARM figure.
What counts as a viewable ad impression?
The MRC and IAB guideline counts a display impression when at least 50% of pixels are in view for one continuous second, and video when they are in view for 2 continuous seconds.
IAB-reported digital ad revenue, 2025 at a glance
Podcast2.9 $ billions
Digital video78 $ billions
Display81.6 $ billions
All digital advertising294.6 $ billions
Official sites
- CPM (Cost per Thousand Impressions) · support.google.com
- Revenue per Subscriber (ARM) · s22.q4cdn.com
- Premium ARPU (Average Revenue per User) · s29.q4cdn.com
- RPM (Revenue per Thousand Impressions) · support.google.com
- Ad Fill Rate · support.google.com
- Sell-Through Rate · support.google.com
- Viewability Rate · iab.com
- Subscriber Churn · en.wikipedia.org
- Advertising Revenue Growth · iab.com
- Subscriber Lifetime Value (LTV) · en.wikipedia.org
Sources
Prices, specs and availability change; confirm on the official site before you buy.