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2026 Edition
General corporate tax
Tier 3
20 firms ranked
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Tier 1

Arntzen Grette
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BAHR
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Deloitte
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EY
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PwC
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Thommessen
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Wiersholm
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Tier 2

Advokatfirmaet Bull AS
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Brækhus
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DLA Piper
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KPMG
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Schjødt
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Selmer
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Tier 3

BDO
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CMS Kluge
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Haavind
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Ræder Bing
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Wikborg Rein & Co
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Tier 4

SANDS Advokatfirma DA
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Simonsen Vogt Wiig
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Indirect tax
Tier 2
15 firms ranked
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BAHR
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Brækhus
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Deloitte
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EY
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KPMG
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PwC
9 practice areas
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Selmer
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Thommessen
8 practice areas
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Tier 2

Arntzen Grette
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BDO
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DLA Piper
8 practice areas
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Schjødt
3 practice areas
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Wiersholm
8 practice areas
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Tier 3

Advokatfirmaet Bull AS
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Haavind
6 practice areas
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Transactional tax
Tier 3
15 firms ranked
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Tier 1

Arntzen Grette
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BAHR
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Deloitte
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EY
9 practice areas
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PwC
9 practice areas
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Selmer
8 practice areas
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Thommessen
8 practice areas
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Wiersholm
8 practice areas
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Tier 2

Advokatfirmaet Bull AS
5 practice areas
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DLA Piper
8 practice areas
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Haavind
6 practice areas
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KPMG
9 practice areas
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Ræder Bing
7 practice areas
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Tier 3

BDO
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Brækhus
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Transfer pricing
Tier 3
11 firms ranked
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Tier 1

BAHR
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Deloitte
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EY
9 practice areas
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KPMG
9 practice areas
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PwC
9 practice areas
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Thommessen
8 practice areas
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Wiersholm
8 practice areas
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Tier 2

Arntzen Grette
8 practice areas
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DLA Piper
8 practice areas
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Tier 3

BDO
5 practice areas
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Selmer
8 practice areas
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The OECD’s project was up for debate as Matt Williams spoke to ITR following BDO’s tax strategist survey, which uncovered increased complexity and costs among multinationals
Rising demand for specialist expertise has fuelled the growth in tax partner headcounts, Cain Dwyer found; in other news, Switzerland has been urged to reconsider pillar two
A new focus on early intervention and increased AI use is transforming how tax authorities are approaching TP audits, though capacity-constrained jurisdictions risk falling behind
Significant changes include an update to profit markers and an alteration to how an ‘inbound distributor’ is defined
New hires from rivals are reportedly being axed from the firm, following a steep decline in profits
New reforms represent the most seismic shift in Canadian TP legislation since its enactment and a clear inflection point for MNEs, ITR has heard
Partners are divided on Italy vs PDM D’s analytical depth, evidentiary standards, and what the judgment signals for future intra-group financing cases
The expanded firm will comprise roughly 8,500 employees, including 550 partners; in other news, Paul Hastings and Macfarlanes made senior tax hires
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