Two cases, currently before different courts highlight long-standing questions around the attribution of profits to permanent establishments. Irish and United Kingdom law on the attribution of profits to branches of non-resident companies remined identical for decades until 2003. In each country, a non-resident company trading through a branch in that country was chargeable to corporation…

The attribution of profits to a permanent establishment is already a complex issue with at least three separate regimes in the tax treaty context- the OECD Authorised Approach under the 2010 OECD version of Article 7 of the OECD Model, the AOA subject to limitations required by the pre-2010 version and that permitted by Article…