Gains:
- Ability to place a tax question in the hierarchy of law, secondary legislation and administrative interpretation and use artificial intelligence only as a guiding screening tool
- Ability to confirm each legislation article, notification and ruling number given by artificial intelligence from the official source (Official Gazette, GIB, legislation portal)
- Ability to prevent the risk of repealed or changed provisions by checking the currentness and effective date of the legislation
Tax legislation research leads to a question "what should I do?" It is a matter of finding out from the right source which rule is valid when giving your answer. This is the riskiest and most AI-accelerated area of the profession. Risky because an inaccurate or outdated source leads directly to misrepresentation; It can be accelerated because the legislation is very broad and AI can scan long texts and provide guidance in seconds. The main principle of this unit is one: artificial intelligence shows you where to look, but the official source tells you what is true.
Recognizing the regulatory hierarchy
Proper research begins with knowing that there is a hierarchy of sources. When you ask a question to artificial intelligence, you must place the answer in its place in this hierarchy.
- Law: The ultimate source. For example, VUK (Tax Procedure Law, the law establishing the procedural and formal rules of taxation), GVK (Income Tax Law), KVK (Corporate Tax Law), VAT (Value Added Tax Law). Whatever the law says is the basis.
- Presidential Decision / Council of Ministers Decision: Regulations determining rates and some limits. This is where rate changes often occur.
- Communiqué: Secondary legislation explaining how the administration will implement the law (for example, VAT General Application Communiqué). The details of the application are here.
- Circular: A collective statement made by the administration on a certain subject.
- Special order (mukteza): The written opinion given by the administration to a specific taxpayer's concrete question. It only binds that taxpayer directly but shows the direction of implementation.
- Judicial decision: Council of State and tax court decisions. It shows how the interpretation is shaped in a dispute.
Tip: When asking a question to the artificial intelligence, "label its answer according to the legislative hierarchy: is it a statutory provision, notification, or ruling?" say. This allows you to see the weight and confirmation priority of the output.
Safe research step by step
- Clarify the question. An ambiguous question produces an ambiguous answer. "How is VAT on exports?" instead of "What are the conditions and refund procedure for VAT exemption in service exports?" Concrete as.
- Create a draft roadmap for artificial intelligence. Which law articles, which notification sections, which document types may be relevant? This is a starting map, not a conclusion.
- Open each reference from the official source. See the article of the law directly from the legislation portal, the notification from the Official Gazette, and the ruling from the Revenue Administration ruling system.
- Check for updates. Check whether the article has changed, whether the notification is in force or not, and whether the rate is for that year.
- If there is a conflict, resolve it according to the hierarchy. The notification cannot be interpreted as contrary to law; The specification is not a general rule.
The most dangerous form of hallucination: made-up reference
The most devastating hallucination in taxation is the reference to a non-existent article or ruling as if it were real. The model can produce extremely convincing numbers such as “VUK duplicate 257” or “Circular no. 2020/13”. Sometimes these numbers are real, sometimes they are completely made up, sometimes they are real but irrelevant. Do not accept any of them without seeing them.
Reference type
Where to confirm
Pay attention to what
article of law
Official legislation portal
Current text of the article and date of amendment
notification
Official Gazette archive
Effectiveness and repeal, if any
circular
GIB website
Subject and date harmony
circular
GIB tax system
The reality of the number and the subject match exactly
judicial decision
Official decision banks
Finalization of the decision and its precedent value
three mini cases
Case 1 — Fake circular masquerading as real. A financial advisor asks a depreciation question to artificial intelligence. The model says "Istanbul VDB's circular numbered 62030549-125[6-2019/…] approves this practice." When the consultant searches in the Revenue Administration system, such a ruling does not appear. The reference is fabricated. This 10-minute confirmation prevents a future assessment and a fine of 95,000 TL.
Case 2 — Discontinued notification. An expert receives the decision of a notification regarding VAT refund from artificial intelligence and implements it. However, that provision was changed with the next notification. The model mistook the old text for "current" text. The return file is rejected with missing documents. The right way was to confirm the final version of the notification in the Official Gazette.
Case 3 — Good handling. A CPA gives a 120-page Council of State decision to the artificial intelligence and says, "deduce the legal justification of this decision and which articles of the Tax Procedure Law it is based on, and do not add any article that is not mentioned in the decision." The model summarizes the rationale in 10 points. The CPA compares each article with the decision text and determines the precedent value with his own judgment. Reading that would take hours is reduced to minutes, and no errors occur.
Weak prompt / Strong prompt
Weak prompt:
How much is the exemption for rental income, according to which law?
No period, no source; The model gives an old amount from its memory and perhaps a made-up item.
Powerful prompt:
Your role: tax research assistant. Task: Find out which article of the ITL is based on the exemption to be applied in residential rental income and in which regulation it is included. Rules: - DO NOT tell me an exact amount; State that the amount varies from year to year and mark "must be confirmed from the official source of the relevant year". - Show only the substance/basis structure; If you are making up numbers, state so. - Label anything you are unsure of as "must be verified". Format: reference material + list of official sources to be verified.
The second prompt takes the model out of guesswork and directs you directly to the right resource.
The following template is a standard framework for safely researching any regulatory question:
Subject: [concrete tax question]Period/year: [which taxation period]Requested: 1) relevant law articles, 2) relevant notification/circular, 3) precedent ruling direction, if any, 4) official sources to be confirmed.Restrictions: number making; amount/rate giving, "varies by year"; If you are not sure, mark it as "must be verified".
A check prompt to use when confirming the output is also useful:
Below is a summary of the legislation. For each line, specify:- Is this a statutory provision, notification, ruling, judicial decision?- Can this claim be verified, or does it run the risk of fabrication?- From what official source should I confirm?[SUMMARY: ...]
And for validity check:
Evaluate whether the following provision is up-to-date:- Is this provision still in force, could it have changed?- If you are not sure, say "the validity must be confirmed from the official source".- Specify the dated regulation on which it is based.[JUDGMENT: ...]
Common mistakes
- Mistaking the specification as a general rule. The ruling only binds the relevant taxpayer; It does not automatically apply to every situation.
- Using without seeing the reference. No matter how convincing the trick is, it must be viewed from the official source.
- Skipping the update. An article may have changed or a notification may have been abolished; The date should be checked.
- Confusing the hierarchy. It is an error of interpretation to elevate the notification or ruling above the law.
- Trusting a single source. A critical issue must be supported by multiple sources and, when necessary, judicial decision.
In summary
Tax legislation research is the area that artificial intelligence accelerates the most, but should be used most carefully. The model summarizes long texts and guides you; But only the official source tells what is correct and up to date. Every law article, notification, ruling and decision must be opened and confirmed verbatim, its up-to-dateness must be checked and it must be placed in its place in the legislative hierarchy. The fabricated reference is the most devastating hallucination in taxation; The only antidote is to see the source with your own eyes.
Application task
Choose a real legislative question from your own work (e.g. the condition of an exception). Get a roadmap from artificial intelligence with the powerful prompt template. Then, open and confirm each reference given by the model (article, communiqué, ruling, if any) from the official source and fill in a table: is the reference found in the official source (yes/no), is it up-to-date, does it overlap with the subject. Note whether at least one reference turns out to be made up or outdated.
checklist
- [ ] I made the question concrete and periodic.
- [ ] I have labeled the AI output according to the regulatory hierarchy.
- [ ] I have opened every law article, notification and ruling verbatim from the official source.
- [ ] I have checked the currentness and effective date of each provision.
- [ ] I eliminated made-up or irrelevant references.
- [ ] I supported the critical issue with multiple sources.
- [ ] I recorded the verification results in the verification trace.