Is your group in scope?

Your Bahrain entities are within DMTT if all three apply:

1. They are constituent entities of a multinational group (or of a large domestic group).
2. The group’s consolidated revenue was EUR 750 million or more in at least two of the four preceding fiscal years.
3. They are not excluded entities, such as certain government entities, international organisations, pension funds and investment funds meeting the conditions.

The revenue test is applied to the whole group, not to each entity. A small Bahrain branch or subsidiary of a large group is in scope even if it has no local profit.

Key dates and obligations

How the top-up tax is calculated

1. Start with the financial accounts of each Bahrain constituent entity, using the permitted accounting standard (the local standard, or the consolidated group standard where the conditions are not met).
2. Adjust to GloBE income: remove excluded dividends and equity gains, adjust for policy disallowed expenses, and align intra-group pricing.
3. Calculate covered taxes: current and deferred taxes attributable to Bahrain, including withholding taxes that must be allocated correctly between jurisdictions.
4. Compute the jurisdictional effective tax rate: covered taxes divided by GloBE income for all Bahrain entities combined.
5. Apply the substance-based income exclusion (a return on payroll and tangible assets) to reduce excess profit.
6. Top-up tax = (15% − effective tax rate) × excess profit, allocated to each Bahrain entity.

Where groups get it wrong

• Assuming a zero-tax jurisdiction means a simple 15% bill. The substance-based income exclusion and safe harbours can materially reduce the liability.
• Misallocating withholding taxes suffered on income from other countries, which changes the jurisdictional rate.
• Missing the registration deadline because group tax teams abroad are unaware of Bahrain’s local rules.
• Data gaps: GloBE needs data that ordinary Bahrain statutory accounts do not produce. Build the data pack early.
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How GSPU helps

• Scoping memo: constituent entities, excluded entities, safe-harbour eligibility and first-year exposure.
• NBR registration for each Bahrain constituent entity.
• Advance payment calculations each quarter, using the prior-year or current-year method.
• Annual DMTT return: full GloBE computation, reconciliation to the financial statements and filing.
• Group coordination: we work with your ultimate parent’s Pillar Two team and GSPU’s offices in the UAE and Oman, which run their own DMTT and Pillar Two regimes.
• 2027 readiness: how DMTT interacts with Bahrain’s proposed 10% corporate income tax.