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Does Hong Kong's global minimum tax (Pillar Two) affect my SME?

No, unless your group is very large. The global minimum tax and Hong Kong minimum top-up tax apply only to multinational groups with annual consolidated revenue of EUR 750 million or more in at least two of the four preceding fiscal years. They apply from fiscal years beginning on or after 1 January 2025.

What it is. Pillar Two sets a 15% minimum effective tax rate on large multinational groups in each jurisdiction where they operate. Hong Kong enacted the law on 6 June 2025: the GloBE rules (an income inclusion rule and an undertaxed profits rule) plus a Hong Kong minimum top-up tax (HKMTT) to collect any top-up tax on low-taxed Hong Kong entities itself.

Who is in scope. Only an in-scope MNE group: one with annual consolidated revenue of EUR 750 million or more in at least two of the four fiscal years immediately before the current year. If your group is below that, the rules do not apply to you at all.

When. The IIR and HKMTT apply for fiscal years beginning on or after 1 January 2025.

Administration. Part 4AA entities of in-scope groups must register for a group code, file top-up tax returns, and are required to e-file profits tax returns from 2025/26. The IRD launched top-up tax return filing under the Pillar Two Portal on 26 October 2026.

For a typical SME: nothing to do for Pillar Two. Other rules, such as the FSIE regime and transfer pricing, are separate and have their own tests. If your company is a subsidiary of a large foreign group, ask the group's tax team whether your entity is a constituent entity.

  • Inland Revenue Ordinance (Cap. 112), Part 4AA and Schedules 61–64

Sources

Applies to Fiscal years beginning on or after 1 January 2025 · Last reviewed 29 October 2026

General information for business owners, not legal, tax or professional advice. Rules change, so check the sources or ask a licensed professional before you act.

    Does Hong Kong's global minimum tax (Pillar Two) affect my SME? | OCTIS