As of August 31, 2026, Nielsen has made “key enhancements” to its television ratings methodology, including updates to the total number of TV users in the U.S., its measurement of co-viewing, and a more accurate collection from its Big Data + Panel-only model, which was formally introduced during the 2025-2026 season.
According to the service, the overall goal is to provide more accurate ratings for the 2026-2027 television season, though it notes that these changes will not guarantee higher ratings for any individual series, network, or streaming service.
“We are relentless in our pursuit of delivering the most accurate measurement possible for our media and advertising clients,” said Karthik Rao, CEO, Nielsen. “We’ve spent months working hand in hand with them and industry experts to make Big Data + Panel even more accurate.”
In January, the service’s ratings sample incorporated data from the Advertising Research Foundation’s DASH TV Universe Study, resulting in significant gains in viewing share for broadcast and cable, though part of the implementation caused an uproar in the industry ahead of the then-planned February release of its monthly Gauge report, resulting in a delay in its full implementation. Additionally, the latest update is said to correct timing delays in survey data.
Other enhancements as outlined by Nielsen, with oversight by the Media Ratings Council (MRC), include:
- Co-Viewing: The co-viewing enhancement integrates Nielsen’s proprietary wearable measurement devices more effectively. These are worn on Nielsen panelists’ wrists and resemble smartwatches. The wearables capture audio from TV-related events, including shows and movies, while enabling more passive measurement without requiring a formal login. Because this measurement is more passive, including these devices in the service’s measurement process will provide a more accurate picture of how many people are watching a given program.
- Latency Adjusted DASH UE (Universe Estimate): While Nielsen adopted the ARF’s DASH Universe Estimates into its measurement earlier in 2026, this enhancement improves accuracy by correcting timing delays in survey data. Universe estimates are, as the name implies, an approximation of the total number of households or persons in a particular category – in this case, media consumption capabilities of U.S. homes. While previous DASH UEs were based on 2024 survey data, Nielsen is now updating them to reflect more recent trends in consumer behavior.
- Household Demographic Assignment Model (HDAM) Enhancement: HDAM is a machine-learning tool used to determine the demographic makeup of households from Big Data providers. This update improves the process to ensure the data is more representative and does not artificially skew toward older residents.
- Integrated Weighting: Nielsen improved its weighting process to combine panel and Big Data more effectively, leading to more consistent, accurate, and reliable viewing numbers.
- Hispanic Methodology Enhancement: Nielsen now combines data from two surveys—the American Community Survey, conducted by the U.S. Census, and the National Hispanic Enumeration Survey—to better estimate the Spanish-language universe. This helps the company create a more accurate and representative picture of Spanish-speaking households.
- ACR Monitored Tuning Adjustment: This update improves the method Nielsen uses to account for differences between the sources Nielsen’s ACR (Automated Content Recognition) providers measure and the sources Nielsen measures in its panel. This improves the accuracy of the sources measured from Nielsen’s ACR providers.
- Provider B Householding: Improves the model Nielsen used to group Big Data devices into individual households for one of its ACR Big Data Providers. This results in more accurate household information from that provider.
This week, the service also announced significant enhancements to its Streaming Content Ratings (SCR) collection, reducing the long-standing streaming ratings data delivery delay by up to 80%, from 28 days to just 11 days, thereby better aligning streaming insights with the reporting speed of linear TV.
“While Nielsen has made a number of material improvements to streaming measurement over the years that have broadened and deepened platform and program coverage, this may be the most significant enhancement to Streaming Content Ratings since its launch in 2017,” said Brian Fuhrer, Senior Vice President, Product Strategy and Thought Leadership. “As the speed of change across the media landscape increases, providing our clients with more immediate, up-to-date audience data helps them keep pace with the consumer.”
The 2026-2027 broadcast television season, as measured by Nielsen, officially starts on Monday, September 21, 2026.