In 2025, McKesson completed a corporate carbon footprint assessment and publicly disclosed its greenhouse gas (GHG) emissions according to the GHG Protocol, covering Scope 1 (direct emissions from owned or controlled sources), Scope 2 (indirect emissions from purchased energy) and Scope 3 (indirect emissions across the value chain).
McKesson has also provided a category-level breakdown for 7 out of 15 Scope 3 emissions categories, offering greater transparency into its value chain emissions.
| Metric (tCO2e) | 2025 | 2024 | 2023 | 2022-2019 |
|---|---|---|---|---|
Total Scope 1 | 72,223a | 79,848a | 79,293b | |
Total Scope 2 | ||||
Market-Based | 119,935a | 152,129a | 140,215b | |
Location-Based | 130,370a | 153,783a | 140,582b | |
Total Scope 3 | 36,077,096a | 32,569,160a | 28,980,752b | |
Total Scope 1 Revenue Intensity (tCO2e/$M) | 0.2011a | 0.2584a | 0.2866b |
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In 2025, the total operational greenhouse gas (GHG) emissions of McKesson amounted to 202,593 metric tons of CO2 equivalent. This figure includes both direct emissions from owned or controlled sources (Scope 1) and indirect emissions from purchased energy (Scope 2).a
Compared to 2024, the total operational greenhouse gas (GHG) emissions of McKesson decreased by 13.29%, showing that the company has made progress in taking action to reduce the climate impact of its operations.a
In 2025, the total Scope 1 emissions of McKesson were 72,223 metric tons of CO₂ equivalent (tCO₂e).a
Since 2019, McKesson's Scope 1 emissions have decreased by 54.02%, reflecting a declining long-term trend in Scope 1 emissions over time.ac
Compared to the previous year (2024), McKesson's Scope 1 emissions decreased by 9.55%, highlighting the company's efforts to lower direct emissions from assets it owns or controls.a
In 2025, McKesson reported Scope 2 greenhouse gas (GHG) emissions of 119,935 tCO₂e using the market-based method and 130,370 tCO₂e using the location-based method.a
Compared to the previous year (2024), McKesson's Scope 2 emissions (Location-Based) fell by 15.22% in 2025, showing that the company has made progress in taking action to reduce the climate impact of its energy consumption.a
In 2025, McKesson reported its Scope 2 emissions using the market-based method and using the location-based method.a
In 2025, McKesson reported 36,077,096 metric tons of CO₂ equivalent (tCO₂e) of Scope 3 greenhouse gas (GHG) emissions, representing indirect emissions across its upstream and downstream value chain.a
The 2025 disclosure of McKesson includes a breakdown across 7 of the 15 Scope 3 categories defined by the GHG Protocol, matching the level of disclosure in 2024, demonstrating consistent Scope 3 emissions reporting coverage year over year.a
In 2025, McKesson reported total Scope 3 emissions of 36,077,096 metric tons of CO₂ equivalent (tCO₂e).a
Approximately 100% of these emissions originated from upstream activities such as purchased goods and capital goods, while 0% came from downstream activities like product use, distribution, and end-of-life treatment.a
Since 2019, McKesson's Scope 3 emissions have increased by 53,654.95%, reflecting a rising long-term trend in Scope 3 emissions over time.ad
Compared to the previous year (2024), McKesson's Scope 3 emissions increased by 10.77%, suggesting that the company faced challenges in reducing emissions across its value chain.a
In 2025, McKesson reported emissions for 7 out of the 15 Scope 3 categories defined by the GHG Protocol.a
This partial disclosure allows for some insight into the company's indirect impacts.
In 2025, the largest contributors to McKesson's Scope 3 emissions were:a
In 2025, McKesson reported Scope 1 greenhouse gas (GHG) emissions of 72,223 tCO₂e and total revenues of USD 359,140 millions. This translates into an emissions intensity of 0.2 tCO₂e per millions USD.a
In 2025, McKesson reported a Scope 1 emissions intensity of 0.2 tCO₂e per millions USD. Compared to the peer group median of 0.73, this places the company below its industry benchmark, indicating it is more carbon-efficient than most competitors.a
In 2025, McKesson ranked 5 out of 22 companies in its industry peer group, based on Scope 1 emissions intensity (measured in tCO₂e per millions USD).a
This places McKesson among the top performers, with one of the lowest emissions intensities relative to peers.a
In 2025, McKesson reported a total carbon footprint of 36,279,689 metric tons of CO₂ equivalent (tCO₂e) across Scope 1, Scope 2, and Scope 3 emissions. This represents a 10.6% increase compared to 2024, suggesting a rise in emissions across its operations or value chain.a
The largest contributor to McKesson's total carbon footprint was Scope 3 emissions, accounting for 99.44% of the company's total carbon footprint, followed by Scope 2 emissions at 0.36%.a