The Income Inclusion Rule and Undertaxed Payments Rule
The Income Inclusion Rule and Under-Taxed Payments Rule are the core of the global minimum tax concept.
The Income Inclusion Rule and the Undertaxed Payments Rule are together known as the GloBE rules (Global anti-Base Erosion Rules).
The key to both of these rules is the calculation of the new GloBE effective tax rate.
The most important aspects of this calculation are as follows:
- The starting point for the calculation is accounting figures based on IFRS or an accepted alternative (US GAAP, HK GAAP etc). Swiss GAAP FER and/or Banking GAAP are not expected to be accepted alternatives.
- For groups that do not currently prepare accounts using one of the accepted alternatives there is expected to be an option to utilise the group accounting standard (if locally accepted by the relevant body, e.g. Swiss GAAP FER) with adjustments made for any material differences between the accounting standard used, and IFRS. This will of course require the taxpayer to assess and document the differences.
- The numerator for the effective tax rate calculation will be a measure of covered taxes which will include not only income taxes but a range of other taxes on profits, profit distributions or equity. It is currently expected, that also deferred taxes will be part of these covered taxes with certain limitations that will require monitoring and adjustments.
- The denominator for the calculation will be a new definition of covered income calculated from group consolidated accounts with a number of adjustments specified by the OECD.
MNEs will need to calculate their effective tax using these new rules on a jurisdictional basis and compare the effective tax rate that they have calculated to the 15% minimum that has been endorsed by theOECD and Inclusive Framework.
The income inclusion rule works by requiring a parent company to tax any profits in its subsidiaries that have not been taxed at the minimum rate. For example if Switzerland adopts the income inclusion rule (as expected) then a Swiss parent company with a subsidiary in Hungary that has an effective tax rate of 9% would pay a top up tax of 6% of the Hungarian profits – the payment would be made here in Switzerland to the Swiss tax authorities.
The under-taxed payment rule would work by allowing the Swiss tax authorities to tax payments made by a Swiss entity to undertaxed foreign entities (I.e. entities in locations where the group has a GloBE effective tax rate of less than 15%. For example if a Swiss subsidiary made payments to a sister company in Bermuda (tax rate 0%) then the Swiss tax authorities would be allowed to tax the profits of Bermuda at the new minimum rate of 15% - subject to cap. Switzerland would apply this additional tax unless Bermuda’s profits were already taxed in another country through an application of the subject to tax rule or the income inclusion rule (or unless Bermuda perhaps introduces a 15% corporate tax for large entities in response to the new rules – as Ireland has indicated it will).
Another important implication of the undertaxed payments rule is that foreign tax authorities will be able to tax the Swiss profits of Swiss headquartered groups if their GloBE effective tax rate for the Swiss operations is less than 15% (as calculated under the new rules). This will happen unless or until Switzerland amends its tax law – for example by introducing a new 15% domestic minimum tax for the largest groups.
A final important aspect of the income inclusion rule and the under-taxed payments rule is the order in which they apply. Because the income inclusion rule applies first, and because the undertaxed payments rule only applies to profits that have not already been caught by the income inclusion rule, it is likely that the income inclusion rule will have a much larger impact on most Swiss headquartered groups.