The biggest change to TV Ratings in 20 Years is coming… here’s why.

The biggest change to TV Ratings in 20 Years is coming… here’s why.
  • World-first data to better reflect the way we watch
  • OzTAM data supplied at 11:35am AEDT daily
  • New Reach and National Audience numbers
  • No more Overnight preliminary supplied
  • No more city by city breakdowns supplied*
  • No separate Multichannel figures*
  • No separate Subscription TV figures*

Television ratings are being overhauled from Monday by OzTAM in the biggest shake-up in two decades.

A Top 30 will be sent to trade media at 11:35am daily (with no press embargo) designed to reflect “the way we watch” by abandoning Linear Overnight numbers.

The changes address issues around Linear Overnight numbers only telling part of the story and to improve on a Total TV figure which so far has been released early afternoons.

Now it will also include Reach….

New OzTAM data will include:

  • Total TV National Reach (the number of national viewers who have seen at least 1 minute of a television show via Linear or BVOD such as 7Plus, 9Now, 10Play etc)
  • Total TV National Audience (an Average of above)
  • BVOD National Audience (the number of national viewers who have seen at least 15 seconds via BVOD)
  • Demographics: Total Ppl, Ppl 25-54, Ppl 16-39, Grocery Shoppers (18+)

OzTAM will also issue Total TV Consolidated 7 Top 30 programs to show how programmes have lifted in the past 7 days as well as Total TV ‘When Watched’ weekly cumulative reach every Tuesday.

Although Survey does not commence until Sunday February 11 the new changes will take effect from Monday.

This will mean later publication of figures every day and the end of some data results.

OzTAM will also be removing some Reports from their website to avoid incorrect Year on Year comparisons.


Why are the daily Overnight TAM and STV reports and the daily rolling FTA C7 TPR distributed to journalists ceasing?
Understanding the true picture of Total TV performance requires a Total TV view.
Total TV reach figures provide the most accurate picture of all-screen program consumption and campaign performance over time.
The move to Total TV reach-based reports supports the industry’s move towards VOZ as currency.
Ceasing production of the multiple separate reports currently emailed to journalists with data licence agreements in favour of the new VOZ Total TV website reports will streamline and simplify reporting practices and minimise confusion between the various datasets.

How do reach and audience figures differ?
Reach is the sum of unique (individual) viewers who have watched at least one minute of a program or daypart across its total duration. This means an individual is only counted once if they have viewed at least one minute (broadcast TV) and/or 15 seconds (BVOD) of the program.
Reach differs to audience, which is the sum of all individuals watching each minute of a program/daypart divided by the duration of the program/daypart to give an average minute audience across the duration of the event being analysed.

Why is broadcast TV based on a viewing threshold of 1-minute and BVOD on 15-seconds for reach results?
1-minute reach is the decades long industry accepted standard for broadcast TV reach.
15-second reach for BVOD represents the unique count of people who have watched at least 15 seconds of the program. This count provides a television reach-like number.
15 seconds also reflects the fact that online broadcast video is premium content which enjoys high viewer engagement rates.
The 15-second BVOD standard reinforces the Australian television industry’s commitment to a measurement metric whereby to ‘count’ the content must be of sufficient duration to capture the consumer’s attention.

Why aren’t historical audience reports on the OzTAM and VOZ websites any longer?
To avoid confusion and not-like-for-like comparisons:
o Reach and audience-based reporting are different calculations
o Also, viewing aggregation rules – notably for ’spill viewing’ at a national level – have been updated in the latest VOZ Total TV website reports. Refer to following question for TAM vs VOZ differences.

How do we report correctly from the new reach-based VOZ reports?

Here are some sample sentences for how to accurately report from the new VOZ data:

“On Monday 15th January 2024, 12.329 million people nationally were reached by broadcaster content either via broadcast linear TV or BVOD.”
“10.475 million people nationally watched at least 1 minute of broadcast TV on the 15th January 2024.”
“Across the 7 days from 8th January to 14th January, 6.691 million people nationally watched at least 15 seconds of BVOD.”
“The program with the highest Overnight Total TV reach on 15th January was 2024 AUSTRALIAN OPEN D2-NIGHT with 2.424 million people.”
“Seven News had a reach of 2.243 million people across broadcast TV and BVOD nationally last night.”
“In the Consolidated 7 rankings for 8th January 2023, HOME AND AWAY on Seven ranked 5th with a national Total TV reach of 1.393 million people, a national Total TV audience of 936,000 and 174,000 for national BVOD.”
“Gladiators on 10 launched with a national Total TV reach of 1.349 million people and an average Total TV audience of 556,000.”

OzTAM is jointly owned by Seven, Nine and 10 Networks.

* Full panel results are available to OzTAM subscribers such as networks, agencies etc.