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法定監査
太陽有限責任監査法人は、法律によって義務付けられた各種の監査を提供しています。
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任意監査(IPO)及び関連サービス
太陽有限責任監査法人は、上場を目指す多くの会社に、豊富な経験に基づき、株式公開準備のための監査を提供しています。
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その他任意監査
太陽有限責任監査法人は、経営者等の依頼に基づく各種の監査を提供しています。
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情報セキュリティ監査
情報セキュリティに係るリスクアセスメントに基づく適切なコントロールの整備状況及び運用状況を検証又は評価して、情報セキュリティの適切性に保証を与え、或いは情報セキュリティの改善に役立つ的確な助言をしております。
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ビジネス税務
永年培ってきた経験とノウハウをベースとしたプロフェッショナルサービスをスピーディ-に提供します。
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プライベート税務
ファミリービジネス(オーナー系企業)に対して、税のみならず民法・会社法など様々な分野において総合的にソリューションを提供します。
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インターナショナル税務
これまで蓄積した知識とグラントソントンのネットワークを活用し、複雑化する国際課税問題に対応します。
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トランザクション税務
デューデリジェンスの初期の段階から、ストラクチャーの実現支援まで、税務がトランザクションに与える影響を考慮し、税務の観点からのみならず、事業価値評価、事業再編等に関わる計画策定から実行まで含めたトータルサポートを提供します。
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M&Aアドバイザリー
高い専門性と豊富な経験を有したプロフェッショナルが、M&Aや事業再編の検討から交渉・実行、及び統合までの様々なプロセスをサポートし、クライアントの成長を支援いたします。
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ビジネスリスクサービス
企業は、ステークホルダーの期待・要求に応え、経営目的を実現するために、有効なガバナンス体制を構築するとともに、適切なリスクテイクを支える環境を整備することが求められています。
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IT&オペレーションズ
データにもとづく製品・サービス品質の向上、規模・範囲の拡大、収益性・効率の改善はクライアントの成長と競争に大きなチャンスをもたらします。
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IPO支援
IPOを実現させるためには、証券取引所が定める上場審査基準を順守し、日本経済を活性化する上場企業としてふさわしい企業経営を行うことが求められます。
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会計アドバイザリー
監査法人での監査経験や事業会社での管理実務等の経験の豊富なプロフェッショナルが、会計・内部統制を中心とした様々なニーズに対応するサービスを提供します。
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フォレンジック&サイバー
最新の調査手法とITテクノロジーを活用し、国内及び海外の不正・不祥事、情報漏洩、サイバー攻撃等の事実解明調査や、これらの防止対策構築の支援を行い、クライアントの社会的価値の確立・維持・向上をサポートします。
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サステナビリティアドバイザリー
企業が高品質なサステナビリティ情報を開示をできるよう、企業に寄り添った支援を提供します。
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中国ビジネス
日本・中国の国境を跨ぐビジネスのパートナーとして、豊富な知識と経験を活かし、最高のサービスを提供します。 我々は、日本と中国のビジネス環境を熟知し、両国の法制度や税制に精通しています。 クライアントのニーズに合わせた的確なアドバイスを提供し、ビジネスの成功に貢献します。
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パブリックセクター
太陽グラントソントンは、パブリックの専門家チームが、パブリックセクターが直面する課題に真摯に向き合い、理解し、最適なプロフェッショナルサービスを提供していきます。
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給与・人事労務
私たちは、事業を展開するにあたって「人」にまつわる給与・人事労務・所得税・在留資格など幅広い分野を横断的・総合的に、グローバルな見地から支援することを目指します。

The quality of AI outputs is improving with a pace too significant for it to be discounted. The oft repeated phrase is that AI and automation is ideal for tasks that are repetitive, follow a specific set of rules, and take a long period of time with manual input. For example, current AI can assimilate information from a Local File and use this to evaluate the comparability of comparable companies based on their business description and other information, providing acceptance and rejection reasons accordingly.
When it comes to transfer pricing, the TNMM (Transaction Net Margin Method) benchmarking studies are an ideal task for AI to tackle, and there are emerging TP specialized AI systems, as well as generalized AI such as ChatGPT that already exist to select companies with comparable functions and risks, thus forming a benchmarked range of profit margins to evaluate the arm’s length nature of intercompany transactions.
However, the use of AI is not yet widely adopted, and there remain concerns over how accurately AI can consistently judge comparability without being fooled by “marketing speak” from company information on websites and annual reports, as well as potentially unclear and occasion inaccurate information on commercial databases widely used by TP practitioners. If AI can perform judgements quickly and accurately, questions relating to the human professional’s role, and how tax authorities may utilize AI will inevitably arise. Furthermore, all Japanese listed companies have extensive disclosed corporate overview information and financial information systematically listed in the company annual reports due to the financial services agency requiring high quality corporate disclosures available online. This information is generally only available in Japanese, representing a language barrier for the human professional, which can be overcome by AI. This is also the case for annual reports disclosed in other markets, but the fact that Japan company annual reports always have the same specific information items disclosed (further explained in chapter 3 of this article), means that the qualitative analysis of comparables can be particularly easily standardized in the Japanese market. This is unlike disclosures in other markets where information provided can vary from company to company.
1. AI and qualitative analysis
When selecting comparable companies, it is not necessarily a simple choice of accepting companies that seem largely similar and rejecting those that deal with dissimilar functions or products. Depending on the industry, there may be few companies that are directly comparable, and a loosening of comparability standards for products or functions may be necessary. For example, with a confectionary distribution company, a drinks distribution company could be considered to have comparable functions and risks, but an alcohol distribution company could be argued to be less comparable, given the particular risks and licensing requirements related to alcohol. Further, a benchmarked set should ensure that it supports the taxpayer profit results and pricing policy, but should also be robust and defensible to tax authority scrutiny.
A benchmarked set that only chooses companies that are almost identical to the tested party, but which do not support the tested party pricing or profit results are of little value, and nor is a benchmarked set that supports the tested party profit results but falls apart under tax authority scrutiny. In these cases, the transfer pricing professional must disseminate the relevant comparable company information and make judgments accordingly, with clearly documented logical and consistent rationale for the acceptance or rejection of each company reviewed. This is the task that AI must undertake.
2. Exploiting AI to its potential
In order to perform the above explained judgments, a nuanced understanding of AI prompting is of primordial importance. AI can perform certain arduous and repetitive tasks extremely well when accurately prompted, but can still be prone to “hallucinations” or making judgments that do not take into account certain factors that the human professional may assume as a given to consider. Further, one must consider the information that the AI is disseminating - if company websites are used, these will often provide persuasive messages on how the company provides a full suite of services or products and offers unique value, in order to persuade customers and investors accordingly. However, this may not provide an accurate account of the actual economic characterization of the potential comparable, and any evaluation must collate and process the information with an understanding of what the company actually does. There must therefore be careful consideration on how the AI makes such judgments.
For example, if the tested party is a limited risk distributor of PC products, performing a certain level of local marketing, but primarily following the instructions and strategy of the overseas affiliate, it may be prudent to prompt elimination of a distributor that has any proprietary technology or trademark that may generate a higher level of value add. However, further scrutiny is also required to investigate whether any proprietary assets genuinely represents a significant influence on excess profits or losses. It may be the case that AI can learn these considerations over time and incorporate it in future strategies, but it will be key for human professionals to ensure that AI maps out its rationale clearly for each comparable, tailored to the tested party in question, as well as review each judgment made for consistency and defensibility in a tax audit. One great advantage is of course that if an additional consideration needs to be made during a qualitative analysis, AI can repeat this with all other remaining companies in a fraction of the time, but must once again be reviewed by TP professionals to ensure that judgments made are not only accurate, but practicable for the requirements of the particular situation at hand.
3. Characteristics of Japan market benchmarks and AI's potential role
Such considerations may be particularly easy to transparently perform in benchmarking studies of Japanese listed companies. This is because the company annual reports (Yuka Shoken Hokokusho, or “Yuho” for short) provide the same information in a set format for each company. Therefore, in a Japanese benchmarking study, it is possible to check the following items to inform judgment of comparability. (Not an exhaustive list)
- Sales per segment
One can evaluate whether a certain product or functional segment is dominant or not. In this way, if a non-comparable segment has negligible sales, this can be easily checked and evidenced. Occasionally, some companies do not report segmented profits, and instead report all activities under “one single segment”. - Transaction reliance
It is necessary for Japanese listed companies to report the level of sales with significant customers. If the majority of sales are to one or two customers, losing those customers will have a significant impact on profit fluctuations, and could constitute a significant risk that renders the company non comparable. - Manufacturing costs
While the business description of some companies may not explicitly refer to extensive manufacturing, the manufacturing costs may constitute a high proportion of sales. This can be easily checked in a Yuho and form a clear reason for rejection of a company. - Sales in different geographic markets
The level of sales to markets in and outside Japan must be reported - if the majority of sales are to non-Japanese customers, this could also form a rationale for rejection.
Searching for these figures is a simple, repetitive, time consuming, but important job. Such analysis could easily be performed and output by AI, and potentially lead to a certain level of standardization of review methods with Japanese listed companies. This is particularly true as all Yuho reports are formatted in easily readable text, so the issue of reviewing annual reports with text that may be misread by AI is minimized. This may also be particularly relevant for bilateral and unilateral APA applications which are relatively popular in the Japan market, as this can provide a certain level of clarity and objectivity to the review of any TNMM benchmark utilized in an APA application that may need to be accepted by one or two sets of competent authorities.
Unlike other markets, Japanese transfer pricing reports tend not to use “off the shelf” standard benchmarking studies often, unless part of a larger set of global documentation. This is in part due to the ability to review detailed information in the Yuho report, as well as the tax authority’s view that Japan is a market with unique characteristics, which lends to more tailored benchmarking for each company. However, with the potential of increased efficient systemization of Yuho review by AI, which can also fully document the rationale for acceptance or rejection of a comparable company, it may be more feasible to generate sets of often used benchmarking studies and request AI to verify it against the functional analysis of a similar company, and fine tune accordingly.
An additional factor is that the universes of companies used for Japanese benchmarking searches are generally smaller than those of many other jurisdictions, due to the fact that only Japanese companies are generally accepted by the Japanese tax authorities, eliminating the need to evaluate other APAC comparable companies. Despite this, quantitative screening criteria are still used to filter out companies that may have excessive R&D expenses, or have consistent operating losses. However, some filters such as revenue levels do not always have a fully explainable rationale as to how they affect function/risk comparability and profit margins, and instead may be used mainly to reduce sample size for manual qualitative review. However, with the increased efficiency of AI, this may lead to less use of quantitative screenings with murky rationale, as qualitative review of numerous companies will be far less time consuming with AI, assuming that the appropriate prompts as explained above can be effectively applied. Alternatively, with AI easily being able to calculate multiple different financial ratios from the profit and loss statements or balance sheet, AI may facilitate the use of more rational quantitative screens which could be deployed more efficiently.
Given the potential advances explained above, could the Japan tax authorities use AI in their tax audits, or even to generate sets of “secret comparables” using a black box of prompts? In many jurisdictions, including Japan, the tax authorities have extremely strict confidentiality requirements when receiving company information, and have strict procedures in place to ensure that company information is not leaked. Indeed, the Japan tax authorities generally do not correspond with companies or tax advisers by email for this very reason. Due to this, it will likely be highly challenging for the Japanese tax authorities to directly use AI for benchmarking analyses, directly based on company information, However, it is an undeniable possibility that AI could be used generally by the tax authorities to enhance their benchmarking analysis capacity, and for example generating a set of secret comparables based on general criteria based on their current understanding of the taxpayer’s functions and risks, without having to use company information. Further, if information encryption and security of AI highly advances over the coming years, while the Japan tax authorities may still be hesitant to adopt AI, there may be tax authorities in other jurisdictions that may be more willing to adopt AI-based benchmarking, leading to differences in benchmarking approaches between tax authorities in tax audits or bilateral APA applications. While the use of AI by tax authorities remains to be seen, the possibility prompts taxpayers and advisers to get the first mover advantage on maximizing the use of AI accordingly.
4. Conclusion
The use of AI in benchmarking is inevitable, and like many other fields, TP professionals will have to understand how to maximize the use of AI and develop nuanced promoting skills. In the future, with the current exponential development curve, it is likely that AI will be able to provide an efficient analysis and description of the functions and risks of a tested party, and accurately delineate the comparability of comparable companies, providing consistent rationale for a benchmarking study. Currently, this is reliant on tax professionals providing the correct information and prompts to AI, such as an accurate description of the functional analysis of the tested party, which AI is currently not always able to accurately analyse with 100% accuracy at this time. While AI is likely to replace much of the base-level benchmarking analysis that professionals currently perform, it will be the role of human professionals to direct and tailor the use of AI accordingly. In order to do so, the analysis performed by AI must be underpinned by an understanding of the facts and circumstances of each client business, as well as the context of the analysis (whether the benchmarking study is for a local file, tax assessment or bilateral APA etc.) for which the pragmatic input of the human professional will remain essential.
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