Pierce O’Reilly
pierceoreilly.bsky.social
Pierce O’Reilly
@pierceoreilly.bsky.social
Economist. Irish. Head of the Business and International Taxes Unit, Tax Policy Division, OECD. Views own, etc. Reposts are bookmarks
without our amazing comms team, and without the delegates from 100+ countries who work hard (on top of their day jobs) to give us data so that good quality comparative statistics can exist. I don't take it for granted. Thanks a lot to all. End/
November 25, 2025 at 9:31 PM
There is more that can and should be done to support evidence-based work on international tax, but this much would not be happening without my diligent, creative and enthusiastic team, 7/
November 25, 2025 at 9:30 PM
4. Lastly, the release of the BEPS stocktake earlier this year was a good moment for me to reflect on how much more evidence there is on MNE activity compared to 10 years prior. Corporate Tax Stats, and CbCR data in particular, is a key part of having an informed debate about international tax. 6/
November 25, 2025 at 9:30 PM
3. CbCR data point to a rising share of MNE tax revenues in the tax mix – the rising role of MNEs in the CIT mix reflects their rising role in the economy as a whole. This in turn raises the stakes for getting the taxation of MNEs right from a revenue, equity, and efficiency perspective.
November 25, 2025 at 9:28 PM
2. CIT revenues are rising. In a world of rising fiscal pressures there is a continuing need for revenue, and corporate profits are a continuing source of it. We need to do more to understand whether these increases are driven by higher profits or broader tax bases – we are working on it!
November 25, 2025 at 9:28 PM
I suspect, but don’t know for sure, that this may be due to the GMT. If this is the case then this would be a significant impact from the GMT itself before a dollar is in top-up tax would be collected, and indeed one that was foreseen by academics before the GMT was implemented. 3/
November 25, 2025 at 9:27 PM
1. The stablisation of CIT rates is continuing. Each year for the past several years I continue to ask myself whether the stablisation is a brief anomaly before the race to the bottom recommences. So far that is not the case, with rates even rising modestly within the OECD. 2/
November 25, 2025 at 9:26 PM
End november!
October 21, 2025 at 7:21 PM
Facepalm.
October 17, 2025 at 7:44 AM