Penalty tax on digital errors: A Nordic perspective

A Swedish court would likely approach the issue differently. Rather than focusing on the nature of the error and the taxpayer’s intent, the analysis would centre on whether it was, or should have been, apparent to the Tax Agency that the information was incorrect. If so, the authority would be required to investigate further and no penalty should arise.

The different approaches illustrate that, while the outcome might well have been the same, the legal reasoning follows different paths.

Background
Caiano AS used the standard accounting program Maestro to complete its 2021 business tax return. An employee accidentally selected the wrong option in a dropdown menu ("Fetch from securities register" rather than "Fetch from account plan") in post 0815, resulting in a NOK 155.6 million deduction being applied incorrectly and taxable income being understated. The Tax Authorities imposed penalty tax of NOK 6.85 million under The Tax Administration Act ("Taa") § 14-3 (1). The sole question before the Supreme Court was whether the exception for "obvious calculation or writing errors" in Taa. § 14-4 (b) applied.

Legal framework
Taa. § 14-4 (b) provides that penalty tax shall not be imposed where incorrect or incomplete information is attributable to "obvious calculation or writing errors" (Nw. åpenbare regne- eller skrivefeil). Two cumulative conditions must be met: (i) the error must have the character of a calculation or writing error, and (ii) it must be obvious to the tax authorities. The provision is a continuation of the Tax Administration Act of 1980 § 10-3 nr. 2 (b) and should be understood consistently with earlier case law (Rt-1997-1117 Schultz; Rt-2006-593 Eksportfinans; Rt-2006-602 Gezina).

Majority reasoning (3–2 split decision)
The majority held that unintentional keyboard or click errors in digital filing, such as selecting the wrong dropdown option, must be equated with traditional writing errors. The decisive criterion is a discrepancy between the filer's intention and what was actually entered, not the medium used. This is consistent with the legislature's intent that the concept should develop through case law as technology evolves.

The error was "obvious" even though the tax authorities did not know that the Wilson investment was accounted for under the equity method. The structure of the business tax return requires that every item on page 4 (corrections) has a corresponding entry on page 2 (accounts). Post 0815 lacked any plausible matching entry, the entire amount in post 8005 was already fully accounted for by posts 0816 and 0830. An examiner applying ordinary
diligence could not have avoided concluding that something was wrong. Crucially, it is not required that the authorities also understand what the error consists of.

Minority reasoning (2 judges)
The minority agreed on the technology-neutral interpretation but concluded the error did not qualify for exemption from penalty tax. Selecting an option from a dropdown requires multiple deliberate steps and presents as a conscious active choice, not a slip of the pen. Furthermore, the filer's witness evidence suggested she had subjectively assessed the entries as correct, indicating a material assessment error rather than a pure unintentional keystroke. Extending the exception to such errors would create difficult line-drawing problems for tax administration.

Conclusion and key reflections

1. Digital filing errors are writing errors. Wrong checkbox or dropdown selections are now clearly within Taa. § 14-4 (b), provided the entry was unintentional. The principle applies regardless of whether the filer is blameworthy, the exception operates independently of the unexcused-fault rule in Taa. § 14-3 (2).
    
2. Intention is the decisive criterion. The core question is whether the entered value matches what the filer intended to enter. Errors caused by misunderstanding tax rules or factual circumstances ("assessment errors") remain outside the exception.
    
3. The "obvious" threshold focuses on discoverability, not comprehensibility. Tax authorities must be unable to avoid detecting that an error exists, but they need not identify what it is. A structural inconsistency in the return suffices.
    
4. Practical significance is growing. With mandatory digital filing (since 2016) and mandatory use of standardized accounting programs (since 2021), dropdown and checkbox errors are becoming the primary form of inadvertent mis-filing, making this ruling increasingly relevant in practice.
    
5. A narrow dissent signals doctrinal tension. The 3–2 split reflects genuine uncertainty about whether the exception should cover errors that involve multiple active steps, even if ultimately unintentional. The boundary between an inadvertent mistake and an assessment error will probably continue to be litigated.
    
6. The Supreme Court's assessment of the obvious criterion indicates that the result could have been the same if the court had considered whether there was a failure to disclose information that could be sanctioned according to the Loffland standard, cf. Rt. 1992 p. 1588 Loffland.

Reading the Caiano case prompted us to consider how it might have been decided by a Swedish court applying Swedish law. While the ultimate outcome may not necessarily have differed, the legal reasoning and analytical path to that outcome almost certainly would have.

At a high level, the Norwegian and Swedish systems are similar. Put simply, if a taxpayer provides incorrect information in a tax return, including by omitting relevant information, and this results in too little tax being assessed, administrative tax penalties may be imposed. Such penalties are generally decided by the Tax Agency and may be appealed to the courts. In Norway, these matters are heard within the ordinary court system, whereas in Sweden they are dealt with by the administrative courts. Accordingly, had Caiano been litigated all the way to the highest instance in Sweden, it would have been decided by the Supreme Administrative Court.

There are other procedural differences but let us leave those aside and focus on the substantive rules. As we understand the Caiano case, it was not disputed that the taxpayer had provided incorrect information. The issue before the Norwegian Høyesterett ultimately boiled down to whether the incorrect information resulted from what could be characterised as a clerical or writing error and, if so, whether it was obvious that the information in the tax return was incorrect.

Because the relevant Swedish rules are framed differently, a Swedish court would approach the matter in another way. Once it had established that the taxpayer had provided incorrect information, the court would proceed directly to the question whether it was, or should have been, apparent to the Tax Agency that the information provided could not serve as a basis for a decision. In other words, the Swedish rule focuses on whether it is obvious, or ought to be obvious, that the information provided is, put simply, incorrect. Whether this stems from a writing error or some other cause is of secondary importance.

Moreover, unlike what appears to be the case in Norway, the taxpayer’s intention in providing the incorrect information is generally of limited relevance at this stage. If the Swedish court finds that the information was obviously incorrect, the Tax Agency’s duty to investigate further is triggered. In turn, this means that the taxpayer is not deemed to have provided incorrect information for purposes of the tax penalty rules, and the matter ends there.

If, on the other hand, the court concludes that it was not obvious that the information was incorrect, it must go on to consider whether there are grounds for a full or partial remission of the tax penalty. At that stage, factors such as the taxpayer’s intention and the circumstances surrounding the error may become relevant.