On September 10, 2026, Ireland's Office of the Revenue Commissioners published eBrief No. 135/26, updating Tax and Duty Manual Part 20-01-04 on the capital gains tax (CGT) group relief provisions in Section 617 of the Taxes Consolidation Act 1997. The revision adds guidance on how to classify foreign entities that sit inside a group structure when deciding whether an intra-group asset transfer qualifies for no-gain/no-loss treatment under s.617.
The change bears directly on CGT and M&A tax teams at Irish holding companies and inbound multinationals that use Ireland as a holding-company platform. Where a foreign entity stands between an Irish transferor and an Irish transferee, or itself receives or transfers an asset, its classification now has explicit Revenue guidance, and getting it wrong means the relief can fail and CGT can crystallise on a transfer the group expected to defer.
What changed in TDM Part 20-01-04?
Section 617 TCA 1997 lets a company transfer an asset to another company in the same 75% group as if the transfer produced neither a gain nor a loss. The CGT that would otherwise arise is deferred, rolling the base cost forward until the asset leaves the group through a disposal to a non-group party. TDM Part 20-01-04 is Revenue's operating manual for that provision, and the September 10, 2026 eBrief No. 135/26 update does not amend the statute. It adds administrative guidance on one eligibility condition: which foreign entities count as a qualifying group member for the relief.
Which foreign entities does the classification affect, and why does it matter?
The new content addresses foreign entities that are part of a group relying on s.617, where the question is whether the entity is a company that can act as transferor or transferee for the relief. The established Irish analysis turns on whether the foreign entity is fiscally opaque, meaning it is itself subject to tax in its country of residence on its own profits, or fiscally transparent, meaning its jurisdiction taxes the members rather than the entity. An entity that is transparent for Irish tax purposes is generally not a qualifying company for group relief, so a transfer to or from it cannot take no-gain/no-loss treatment under s.617.
Before this update, the s.617 manual did not address foreign entity classification at this point. The revision closes that gap, giving tax teams Revenue's position on how to apply the opaque-or-transparent analysis in the s.617 context, and making it harder to argue the classification was simply unresolved.
| Step | Check against the updated s.617 manual |
|---|---|
| 1 | Determine whether the foreign entity is opaque (taxed as an entity in its home jurisdiction) or transparent (members taxed). |
| 2 | If transparent, it is not a qualifying company: s.617 no-gain/no-loss relief does not apply to a transfer to or from it. |
| 3 | If opaque, confirm it still meets the 75% group membership and Irish charge-to-tax requirements. |
| 4 | Document the classification against TDM Part 20-01-04 before filing the return that claims the relief. |
What should tax teams do before the next intra-group transfer?
The directly exposed groups are Irish holding companies with foreign intermediate holdings, and multinationals using Irish companies within a wider group that includes foreign partnerships, hybrid entities, or entities whose tax classification is not obvious. Before the next transfer, confirm the classification of every foreign entity in the chain under the updated manual, check that both transferor and transferee remain qualifying companies for s.617, and document the analysis in case of Revenue enquiry.
A transfer that claimed relief on the assumption a foreign entity qualified, when the entity is in fact transparent, leaves the group with an unexpected CGT charge plus interest. Because the manual is administrative guidance rather than new law, it can be relied on from its September 10, 2026 publication date, but it also signals how Revenue will treat classifications on audit going forward.
Obsidian's continuous, per-jurisdiction real-time monitoring surfaces the moment Revenue publishes a manual update like this one, before it reaches practitioner notes.
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Next steps: pull the current group chart and flag every foreign entity in any chain that has used, or plans to use, s.617 relief; re-run the opaque-or-transparent classification against the updated TDM Part 20-01-04; brief the M&A and compliance teams so that no intra-group transfer is signed off on a stale classification assumption.
