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This site contains the Commissioner’s interpretation of tax law, our Work Programme for the year, and where you can provide feedback on any new work underway or apply for a binding tax interpretation. Publications on this Tax Technical website are correct at the date of issue. Read more
This site contains the Commissioner’s interpretation of tax law. Read more

CSUM 26/02 Disputant’s claim struck out due to failure to follow the disputes process

16 Apr 2026 Case summaries / 2026

The disputant filed a challenge proceeding against tax assessments where the disputant had failed to issue a Notice of Response (NOR) within the response period and, later, had failed to challenge the Commissioner’s refusal to treat a late NOR as having been issued within time. The disputant’s claim was struck out as the TCRA had no jurisdiction to hear the claim as the statutory preconditions for commencing a challenge were not met.

CSUM 26/03 Taxpayers’ appeal against evasion shortfall penalties dismissed

16 Apr 2026 Case summaries / 2026

Six appellants (four brothers and two brothers-in-law) appealed a Taxation and Charities Review Authority (Authority) decision upholding the Commissioner of Inland Revenue’s (Commissioner) assessments and imposition of evasion shortfall penalties. The appellants abandoned their appeal against the underlying income tax and Working for Families Tax Credits (WfFTC) reassessments, leaving only an appeal on whether the Commissioner had proved evasion for the purposes of s 141E.

The High Court held that the Commissioner had the onus of proving that in taking their respective tax positions, each appellant intentionally avoided the payment of income tax in circumstances where he knew he was or may be under an obligation to pay. The Judge upheld the Authority’s findings that the absence of records and implausible explanations given, meant that the evasion shortfall penalties were correctly imposed, and the appeal was dismissed.

TDS 26/03 Sale and subdivision of land

09 Apr 2026 Technical decision summary / 2026
This item summarises a private ruling about a sale and subdivision of land, a “lowest price” clause in the sale and purchase agreement, and whether there was any financial arrangement income or loss.

Volume 38 No 3 Tax Information Bulletin April 2026

01 Apr 2026 TIB / Volume 38 - 2026

ITR37 2026 International tax disclosure exemption

31 Mar 2026 Determinations / International tax / Disclosure exemptions / 2026

This determination sets out which interests in foreign companies and foreign investment funds for the year ended 31 March 2026 the Commissioner of Inland Revenue does not require a person to disclose for the administration of the international tax rules.

IS 26/09 Shortfall penalties – reductions and other matters

27 Mar 2026 Interpretation statements / 2026

This interpretation statement is relevant where the Commissioner imposes a shortfall penalty for not taking reasonable care (s 141A), an unacceptable tax position (s 141B), gross carelessness (s 141C), an abusive tax position (s 141D), or evasion or similar act (s 141E). 

It discusses when a shortfall penalty is reduced (or increased), what happens when a taxpayer could be liable for more than one penalty and the assessment, payment and disputing of shortfall penalties.

There is separate guidance on the threshold requirements for a shortfall penalty (that there be a “tax position” and a “tax shortfall”) and the shortfall penalties provided in s 141A, 141B, 141C, 141D and s 141E of the Tax Administration Act 1994.

IS 26/05 Shortfall penalty for taking an unacceptable tax position

27 Mar 2026 Interpretation statements / 2026

This interpretation statement explains the meaning of “unacceptable tax position” in relation to the shortfall penalty for taking an unacceptable tax position in s 141B of the Tax Administration Act 1994.

IS 26/07 Shortfall penalty for taking an abusive tax position

27 Mar 2026 Interpretation statements / 2026

This interpretation statement (IS) explains the meaning of “abusive tax position” in relation to the abusive tax position shortfall penalty.  The IS also discusses relevant case law and provides several practical examples for clarity.

There is separate guidance on the shortfall penalties provided in s 141A, 141B, 141C and s 141E of the Tax Administration Act 1994, the threshold requirements for a shortfall penalty (that there be a “tax position” and a “tax shortfall”) and reductions and other matters that may be relevant when a  shortfall penalty is imposed (Related Publications).

IS 26/06 Shortfall penalty for gross carelessness

27 Mar 2026 Interpretation statements / 2026

This interpretation statement explains the meaning of gross carelessness in s 141C of the Tax Administration Act 1994.  It discusses the circumstances that could be relevant in determining whether someone has been grossly careless and how to distinguish gross carelessness from lower levels of negligence.  It also discusses relevant case law and provides several practical examples for clarity.

IS 26/05 FS 1 Income tax – Unacceptable tax position shortfall penalty - fact sheet

27 Mar 2026 Fact sheets / 2026

This fact sheet accompanies interpretation statement IS 26/05: Shortfall penalty for taking an unacceptable tax position, which explains meaning of “unacceptable tax position” for the shortfall penalty for taking an unacceptable tax position in s 141B of the Tax Administration Act 1994.