Unitary Taxation

Tax Cooperation Policy Brief No. 36, 26 October 2023

Beyond the Two Pillar Proposals

A Simplified Approach for Taxing Multinationals

By Sol Picciotto, Muhammad Ashfaq Ahmed, Alex Cobham, Rasmi Ranjan Das, Emmanuel Eze, Bob Michel

This paper puts forward an alternative to the proposed multilateral convention under Pillar One of the BEPS project, by building on and going beyond the progress made so far. A new direction was signalled in 2019 by the G-24 paper proposing a taxable nexus based on significant economic presence, combined with fractional apportionment. The resulting measures agreed under the two Pillars entail acceptance in principle of this approach, and also provide detailed technical standards for its implementation. These include: (i) a taxable nexus based on a quantitative threshold of sales revenues; (ii) a methodology for defining the global consolidated profits of MNEs for tax purposes, and (iii) detailed technical standards for defining and quantifying the factors that reflect the real activities of MNEs in a jurisdiction (sales, assets and employees).

The time is now right to take up the roadmap outlined by the G-24. The work done shows that technical obstacles can be overcome, the challenge is essentially political. This paper aims to provide a blueprint for immediate measures that States can take, while engaging in deliberation at national, regional and international levels for a global drive towards practical and equitable reforms. Unitary taxation with formulary apportionment is the only fair and effective way to ensure taxation of MNEs where economic activities occur, as mandated by the G20. It can ensure that MNE profits are taxed once and only once, provide stability and certainty for business, and establish a basis for international tax rules fit for the 21st century.

* Also available in French, Spanish, Portuguese and Arabic.



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