What is The Global Media Sustainability Framework (GMSF)?

Global Media Sustainability Framework (GMSF) is a shared set of rules for calculating the carbon footprint of a media campaign, so a TV ad, a digital display buys, and an out-of-home poster can all be measured the same way. The phrase that matters is consistent methodology. GMSF is not a carbon calculator itself, and it doesn't tell you your emissions are low. It's the rulebook that calculators use, so different tools stop giving different answers to the same question. It's aligned with the IPCC Framework and the Greenhouse Gas Protocol and established standards like the Greenhouse Gas Protocol and ISO 14067, which is what lets media emissions feed into an organisation's broader Scope 3 reporting rather than sitting in a separate, incompatible silo.

What problem is the GMSF solving?

Before GMSF, there was no agreed way to compare emissions between media channels or suppliers. Up until now, there has been no consistent, agreed industry-wide measurement framework. That meant two media agencies could measure the same campaign and get different numbers, not because the campaign changed, but because the maths did. Each media channel has its own methodology within the same structured framework, because a billboard, a video ad, and a print run don't produce emissions in the same way or at the same stage. Rather than just estimating one number for a whole campaign, the GMSF breaks emissions down across the full lifecycle of media activity: planning, buying, delivery, and consumption. GMSF exists to close that gap, not to lower emissions by itself. The GMSF emphasises:

·        consistent, comparable emissions calculations across channels and suppliers,

·        transparent, verifiable reporting,

·        measurement across the full lifecycle of media activity,

·        and alignment with recognised carbon accounting standards.

Does using the GMSF mean a company is more sustainable?

No. The framework is voluntary and does not impose legally binding obligations, and it only looks at carbon. It gives you a consistent way to measure and report, but the reduction work, the sourcing decisions, the media mix choices, the supplier pressure, still must happen afterwards. Adopting the framework is a measurement decision, not a performance claim.

What does it cover, and what's still missing?

As it stands, the framework covers media channels representing 95% of global media spend, spanning Digital, TV, Out-Of-Home advertising and Print, with Audio and Cinema guidance still to follow later in 2026. So, it's close to comprehensive, but not there yet, a useful distinction if someone tells you their measurement is "GMSF-compliant."

The bigger picture

At ZeroBees, we help media organisations understand and align with GMSF, supporting credible action and working beyond carbon.

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Need support on your sustainability journey?

ZeroBees helps media businesses make sustainability more useful - across carbon, GMSF, claims, AI governance and client conversations. We turn complex data and emerging expectations into clearer decisions, stronger evidence and more confident teams. Book a discovery call to see how we could support your Responsible Media journey.

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