Key implementation point
UK rebranded all three rules — MTT, DTT, UTP — departing from OECD model rule labels.
Implementation detail
- 01 UK uses distinct nomenclature: MTT (IIR), DTT (QDMTT) and UTP (UTPR) — not the OECD standard labels.
- 02 DTT applies to UK constituent entities of in-scope MNE groups, topping up to 15% on UK profits.
- 03 UTP (UTPR) deferred by one year: effective for accounting periods beginning on or after 31 Dec 2024.
- 04 Transitional safe harbour: UK CbCR-based simplified ETR test available for qualifying periods.
- 05 HMRC published detailed guidance including a Pillar Two manual updated through 2025.
Enacted legislation
Finance (No.2) Act 2023
Official sources & further reading
Track United Kingdom rules against your live MNE
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