How are tax audits conducted?

How are tax audits conducted? (Tax Procedure Law, Articles 134 et seq.)

Summary

Tax audits are conducted to investigate, determine, and ensure the accuracy of taxes due (Tax Procedure Law, Article 134). The audit is generally conducted at the tax office ; however, it can be conducted at the taxpayer's workplace upon request and under appropriate conditions (Tax Procedure Law, Article 139). The audit must commence within 15 days of the assignment (Regulation, Article 9/2022 amendment). It is essential that a full audit be completed within one year, and a limited audit within six months; a maximum of six months may be granted as an additional period (Tax Procedure Law, Article 140). While time limits are considered regulatory in most court decisions , the statute of limitations (generally five years) provides a separate safeguard. At the end of the audit, a report and minutes are prepared; these reports undergo review by the Report Evaluation Commission (RDK) (Tax Procedure Law, Article 140). The taxpayer has the right to object to/comment on the minutes , obtain a copy, and request tax confidentiality and proper procedure (Tax Procedure Law, Articles 141, 5). Inviting people to provide explanations before assessment (Tax Procedure Law, Article 370) is an important "early solution" method.

1) Purpose and Legal Basis of Tax Audits (Tax Procedure Law, Articles 134 et seq.)

Legal purpose: Article 134 of the Tax Procedure Law defines the purpose of the audit as " to investigate, determine, and ensure the accuracy of taxes due ." This norm clearly emphasizes that the audit is an administrative process aimed at ensuring correct taxation , not punishment .

Scope (Articles 135-141): The persons authorized to conduct the audit, the location of the audit, the principles to be followed, and the procedure for preparing the minutes/reports are systematically regulated in these articles. In addition, secondary regulations (especially the "Regulation on Procedures and Principles to be Followed in Tax Audits") clarify the details of the application.

2) Where the Inspection Will Be Conducted (Tax Procedure Law, Article 139)

Rule: Inspections are primarily conducted "at the office ". At-site inspections are possible upon request from the taxpayer or tax responsible party , and in cases where it is necessary to examine the required books and documents at the business premises . With the 2022 amendments, the possibility of remote inspections has also been clarified at the regulatory level.

Practical result:

If an on-site inspection is to be requested, reasonable grounds and physical facilities (suitable space that will not hinder work, access to documents, electricity/IT conditions) must be provided.
Remote review processes (e-notifications, electronic ledger and document sharing, video conferencing, etc.) more quickly ; however, privacy/confidentiality rules remain the same.

3) Commencement of Investigation, Time Limits and Extensions (Tax Procedure Law Article 140; Regulation Article 9)

Commencement period: The review must commence within 15 days at the latest after the assignment is given (Regulation Article 9; 2022 amendment). The previous period of 30 days was reduced to 15 days in 2022

Full/Limited review periods: the review begins ;

Full review: maximum 1 year.
Limited review period: maximum 6 months.
Extension of time: In both cases, of up to 6 months may be granted. (Tax Procedure Law, Article 140)

Interpretation in practice: The current tendency of the Council of State is that these periods are mostly regulatory (instructive) ; however, this does not eliminate the statute of limitations (Article 114 of the Tax Procedure Law; generally 5 years). Failure to observe the periods may not be considered sufficient on its own for the annulment of the transaction; additional elements such as the violation of the right to defense may be sought in the specific case .

Warning: Delayed or slow progress in the investigation process and the suspension of the statute of limitations are different matters. referral to the assessment committee do not suspend the statute of limitations if they are taken before the conditions are met or after the deadline has passed; there are Council of State precedents to this effect.

4) Tax Confidentiality and Principles to be Applied During Audits

Tax confidentiality (Tax Procedure Law, Article 5): During the audit process, information and documents confidentiality rules; responsible individuals and institutions confidentiality . Violation may result in both administrative and criminal consequences.

Examination procedure (Tax Procedure Law, Article 140):

A Notice of Commencement of Investigation is prepared; one copy is sent to the taxpayer and one copy to the affiliated units.
During the inspection, actions are taken in a way that does not disrupt the normal flow of work ; maintaining a minimum work order in the workplace is essential
The inspector documents the findings in a report ; these reports are evaluated by the RDK (Regional Audit Board ) for compliance with the legislation.

5) Minutes and Reporting Stage — RDK Process

Minutes (Tax Procedure Law, Article 141): During the audit, events and accounting situations are recorded in minutes . Objections and comments of the parties involved can be included in the minutes; a copy of the prepared minutes is given to the taxpayer. In practice, obtaining this copy and having objections written down clearly, concretely, and legally sound is critical .

Report Evaluation Committee (REC): Inspection reports are reviewed for compliance with legislation by the RECs established within the Tax Audit Board . In case of a dispute, the file may be sent to the Central REC or the Higher REC. This stage is the final "filter" before assessment

6) Request for Explanation (Tax Procedure Law Article 370) — Pre-Assessment “Early Resolution” Mechanism

Procedure: If the tax authorities' preliminary findings indicate that tax evasion may have occurred, the taxpayer may be invited to provide an explanation before an audit begins . The taxpayer provides an explanation regarding the matter; if the explanation is deemed sufficient, the audit/assessment process may be cancelled. Otherwise, the process continues.

Key points:

Since the deadlines are short when a request for explanation arrives , swift action is necessary.
In practice, requests for explanation an explanation fee and a 30-day payment ; the conditions are defined in Article 370 and secondary regulations.

7) The Taxpayer's Main Rights

Requesting that the investigation be conducted in accordance with proper procedure (notification of commencement, location, duration, working schedule).
Requesting respect for tax confidentiality (Tax Procedure Law, Article 5)
Having objections/comments recorded in the minutes and obtaining a copy (Tax Procedure Law, Article 141).
Request for workplace inspection (if applicable) or remote inspection (2022 amendments).
Evaluating avenues such as reconciliation, reduction of penalty (Tax Procedure Law Article 376), invitation to explain (Article 370), and repentance (Article 371)
Review the report and pursue legal avenues (settlement, correction/complaint, lawsuit). The report will not proceed to the tax assessment stage without passing through the RDK (Radio and Television Supreme Council).

8) Taxpayer's Obligations

Submission of books and documents: They must be submitted within the legal timeframe and within the required scope. Failure to submit them ex officio assessment ; furthermore, it may result in tax loss and/or irregularities. (If the actions fall under Article 359, a separate criminal process may be initiated.)
Access to electronic records and systems: Ensuring access to e-Ledger, e-Invoice, e-Archive, and ERP records.
Adherence to workplace order: Avoiding unnecessary delays in inspections; organizing the workflow in a way that does not disrupt it.
Providing accurate information and cooperating: Responding to information requests in a timely manner; incorrect/incomplete information increases the risk of new penalties and tax assessments.
Up-to-date notification addresses: Compliance with e-notification and KEP (Registered Electronic Mail) processes.

9) Statute of Limitations, Time Limits, and Inferences from Judicial Precedents

Statute of Limitations (Tax Procedure Law, Article 114): The general period is 5 years , but there are provisions for suspension/extension in certain cases. The effect of referral to discretionary proceedings on suspending the statute of limitations depends on the conditions ; actions taken after the expiration of the period do not suspend it
Review periods (Tax Procedure Law Article 140): These are considered regulatory in many decisions ; therefore, cancellation of the tax assessment may not always be possible. However, the outcome may change if the impact on the right of defense and specific procedural violations are proven.

10) 10 Frequently Encountered Themes in Practice — Strategy Notes

The commencement notification was not received/the notification was incorrect: Procedural deficiency; this should be raised in the defense.
The request for an on-site inspection was rejected: The reason for the rejection should be requested in writing; the appropriate conditions should be concretely stated.
Delay in submitting books and documents: Risk of ex officio assessment; if submission is difficult/force majeure, immediate written notification and proof are required.
The minutes are being signed blank: It is absolutely essential objections/remarks be added; a copy should be made.
RDK stage: The taxpayer does not participate directly; however, the legal arguments must have been included in the file during the reporting phase.
Remote monitoring: Electronic data sets (e-ledger, ERP logs) ready ; access permissions should be planned in advance.
Invitation to explain: Early resolution window; technical explanation + possibility of correction; timelines are very short.
As the statute of limitations approaches, steps such as referral to discretion and notification of the dates .
Allegations of forged documents (SMİYB): Risk of falling under Article 359; criminal law aspects and evidentiary standards are evaluated separately.
Claim of expiration of the statute of limitations: This alone may not be sufficient; of causality and of the right to defense .

11) Practical Examples of "Comments" That Can Be Written in Minutes (Tax Procedure Law Article 141)

“This report does not include all the documents submitted at the request of the investigating officer dated … ; the remaining documents will be submitted by … date. It is reserved that the factual findings may change with the documents to be submitted.”

“ We do not agree with the legal opinions regarding the findings under review . In particular, we believe that the explanations requested under the headings… were not taken into consideration for… reasons. Our counter-arguments are detailed in the attached letter. A copy of the minutes has been delivered to us .”

“ We have not been notified in writing. We hereby register our objections to the inspection being conducted remotely/in the office, despite the fact that we have provided the necessary conditions to avoid disrupting the work schedule.”

12) 7-Step Action Plan When a Request for Explanation Receives

the time frame (notification + response) immediately.
List the items that were identified under headings .
data sets (e-ledger, e-invoice, reconciliation, bank, inventory).
Write down the legal basis for the dispute (law, circular, ruling, case law).
Alternative scenario: If there is an error, correction and payment (explanatory surcharge, etc.).
Set a goal to resolve the problem before starting the investigation .
your response with supporting documents and in a timely manner ; keep records of delivery and receipt.

13) RDK and Beyond — Pre-Assessment/Post-Assessment Procedures

of the RDK (Regional Assessment Committee) stage , tax/penalty notices are served. Following this stage, settlement (pre-/post-assessment), penalty reduction (Article 376), and legal action are considered. The GIB (General Directorate of Taxation) guidance documents summarize the process.

14) Example Folder Structure for Review Files (Suggested Application)

00-Notifications (announcement of commencement, written notices, envelopes/KEP records)
01-Authorization and representation (signature circular, power of attorney, information security)
02-Ledgers and documents (e-ledger certificates, e-invoices, e-archives, IRS, MUT)
3-Banking & Finance (statements, POS transactions, loans, exchange rate tables)
4-Stock & Logistics (inventory, counting, production recipes)
5-Contracts & Rulings (opinions, intra-group, dealership)
6-Explanation & Defense (response to the request for explanation, technical notes)
7-Minutes (annotated copies)

15) Frequently Asked Questions (FAQ)

Q1) The review period has expired; will the tax assessment be automatically cancelled?
The general tendency is that the periods in Article 140 of the Tax Procedure Law regulatory ; however, they can be effective when raised in conjunction with a violation of the right to defense and other procedural deficiencies. The statute of limitations, on the other hand, is a separate safeguard.

S2) I submitted the ledger/document late; what will happen?
This may give rise to grounds for ex officio assessment; furthermore, penalties for tax evasion/irregularity may be imposed. Actions under Article 359 (e.g., concealment, destruction) are a separate and more severe regime.

S3) Can I request an on-site inspection?
Yes; it is possible within the framework of Article 139 of the Tax Procedure Law. In addition, the remote inspection practice has been strengthened since 2022.

S4) I received an invitation to explain; if I accept, will the investigation be completed?
It depends on the case. If the explanation is deemed sufficient, the investigation/assessment may not be initiated; otherwise, the process continues. Don't miss the deadlines.

S5) Does referral to discretion suspend the statute of limitations? It can suspend it if the conditions are met; however, actions taken after the deadline will not suspend it. In this specific case, the verification of dates is critical

16) “Checklist” — Things to do as soon as the review begins

Record the date and type of notification (e-notification/KEP/mail)
Request copies of the commencement notice and assignment letters
Clarify the scope and timelines of the review in writing
an inventory of ledgers and documents ; have e-ledger certificates and ERP reports ready.
in-person/remote work; write down the reason.
Include a statement of objection/comment in each report ; make copies .
presented before the RDK (rulings, official notices, case law) in the file.
a deadline schedule ; check critical dates.
a request for an explanation , prioritize it; prepare a technical explanation as quickly as possible.

17) Sample “Invitation to Explain” Response Template (Short)

Subject: Response to your request for explanation under Article 370 of the Tax Procedure Law. Explanation: The reason for the discrepancy in the item numbered … during the … period is; (i) differences in accounting classification and timing ; (ii) the processing of inventory transfer slips and return records on different dates. Evidence: e-Ledger journal/general ledger printouts, bank/POS statements, inventory movement reports, current account reconciliations, … Legal Basis: Articles 134 et seq. of the Tax Procedure Law, General Circular No. …, private ruling dated …. Conclusion-Request: We request that our explanations be deemed sufficient and that the matter not be referred for review/assessment ; otherwise, we request that we be given the opportunity to make corrections

18) Dispute Resolution Strategy — Appeal & Litigation Headings

Procedural objections: Lack of commencement notification, irregularities in on-site/remote inspection, failure to provide a copy of the minutes, restriction of the right to defense.
Main objections: the difference in tax base with evidence, the principle of economic approach, reliance on private rulings, case law.
Statute of limitations/period: The legal effect of the dates of referral to the court of appeal and notification.
Proportionality in penalties: The distinction between culpability and smuggling; the difference between cases falling under Article 359 and minor violations.

19) Quick Summary of Critical Points Based on Resources

Purpose (Tax Procedure Law, Article 134): Correct taxation.
Location (Tax Procedure Law Article 139): The main rule is office; workplace/remote possibilities.
Commencement (Regulation Article 9): Within 15 days of assignment
Duration (Tax Procedure Law Article 140): Full examination 1 year, limited examination 6 months (+ a maximum of 6 additional months).
Minutes (Tax Procedure Law Article 141): Writing down objections/comments and obtaining copies.
RDK: Reports pass through the RDK filter.
Request for Explanation (Article 370): Early solution window before investigation.
Statute of limitations & discretion: Conditions do not stop the process before/after it occurs.

20) Conclusion and Professional Advice

Tax audits procedural and evidentiary discipline simultaneously. The three most critical aspectsare:

Time and notification management,
Minutes strategy (objection/review, copy),
To leave strong legal and technical counter-evidence in the file before the RDK ( Rights and Conditions Commission ).

Modern tools such as requests for explanation and remote review , when used correctly, offer the possibility of early and low-cost resolution. Statute of limitations and time limit disputes should be evaluated on a case-by-case basis; building a defense based on procedural and substantive integrity is often more effective than expecting automatic dismissal

taxpayer, RDK, tax law, VUK

Single Blog Title