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The Evidential Value of Commercial Ledgers: Under What Conditions Are They Conclusive Evidence / Discretionary Evidence?

The Evidential Value of Commercial Ledgers: Under What Conditions Are They Conclusive Evidence / Discretionary Evidence?

Under what conditions is something considered "close to conclusive evidence" / under what conditions is it considered discretionary evidence?

Commercial ledgersare often crucial evidence in proving commercial disputes, determining the "fate of the case." However, the most common mistake in practice is assuming that commercial ledgers always conclusive proof , or conversely, that they are never sufficient on their own . The correct approach is as follows:

  • Commercial ledgers are, as a rule, documents ; however, when the conditions in Article 222 of the Code of Civil Procedure are met , especially when used as evidence in favor of a party, they acquire probative value very close to that of conclusive evidence , as the contrary can only be refuted by "a document or other conclusive evidence" .

  • If the necessary conditions are not met, ledger entries discretionary evidence ; the judge will consider them alongside other evidence and may not definitively conclude them on their own.

1) Legal Framework: Norms Determining Whether a Notebook Constitutes "Evidence"

a) Article 222 of the Code of Civil Procedure: "Presentation of commercial books as evidence"

Article 222 of the Code the court's decision to order the submission of accounting books in commercial cases, the conditions under which books are considered evidence, whether the books favorable or unfavorable consequences, and where reliance is exclusively placed on the opposing party's books . This article forms the backbone of the probative value of commercial accounting books.

b) Turkish Commercial Code Articles 64 and subsequent articles: Obligation to keep accounting records

The manner in which accounting records should be kept , the fundamental principles they should adhere to, and the standard of examination by a "third-party expert" are framed in Article 64 of the Turkish Commercial Code (TTK). This constitutes the material basis for the "procedural compliance" assessment required in Article 222 of the Turkish Code of Civil Procedure (HMK).

c) E-ledger / certificate / closing approval system

In electronic ledgers, the "approval" process certification and technical procedures; deadlines and

2) “Conclusive Evidence” or “Close to Conclusive Evidence”? Correct Terminology

In practice, the phrase "commercial ledgers are conclusive evidence" is frequently used. However, although Article 222 of the Code of Civil Procedure does not directly contain the phrase "conclusive evidence," the systematic structure of the article implies the following:

  • the ledger the evidentiary requirements in favor of the claimant, then proving the contrary with a document or other conclusive evidence becomes relevant; this elevates the ledger from an ordinary "discretionary document" with high binding force .

Therefore, the correct and reliable statement is:
"When commercial ledgers are used as evidence in favor of a party under Article 222 of the Code of Civil Procedure, they acquire probative value close to conclusive evidence, as the contrary can only be refuted by conclusive evidence."

The procedure is determined by the circulars of the Revenue Administration . In litigation, the strength of e-ledger evidence is directly related to the existence of an acquittal and compliance with the procedure

3) Conditions for Commercial Ledgers to be Accepted as Evidence in Favor of the Claimant (The Heart of Article 222 of the Code of Civil Procedure)

a merchant their own accounting records as evidence in their favor , the following thresholds are generally sought together under Article 222 of the Turkish Code of Civil Procedure:

3.1. The dispute being of a commercial nature and the submission mechanism being implemented

The court may order the submission of the parties' accounting records in commercial cases, either on its own initiative or upon request.

3.2. Keeping the books “properly”

The book as evidence in his favor:

  • According to the law, it must be kept complete and in accordance with the procedures

  • Having opening and closing approvals ,

  • The ledger entries corroborate each other .

In practice, the first page of expert reports usually begins with this checklist: "Are the ledgers in order, are the certifications complete, and are the records consistent?"

3.3. The "opposing party's ledger" threshold: The most critical point of evidence in favor of the defendant

In most cases, simply having accurate ledgers is not enough to constitute evidence in your favor. The central issue in the argument for evidence in your favor is whether the opposing party's ledger entries, which meet the same criteria, contradict your own records , or whether the opposing party fails to present their ledgers. This point is clearly emphasized in Supreme Court rulings: in most cases, it is not considered possible to accept the opposing party's own ledger entries as evidence in their favor without examining the opposing party's ledgers .

3.4. The principle of indivisibility:

Commercial ledgers are considered "whole" when evidence is presented in their favor; records cannot be selected and isolated solely based on aspects supporting the owner. Therefore, if you intend to rely on evidence in your favor, the risk of unfavorable entries from the outset.

4) Commercial Ledgers Used as Adversarial Evidence Against the Defendant: Risk Area

Business ledgers are a double-edged sword:

  • Improperly kept, incompletely certified, or internally contradictory ledgers often against their owner .

The logic of Article 222 of the Code of Civil Procedure encourages honest merchants to adhere to proper procedures; irregularities, on the other hand, place the burden of proof on the accountant.

Typical examples of unfavorable outcomes:

  • The ledger initially showed a "debt," but later claimed there was "no debt.".

  • It is stated that the invoice has been disputed, yet it has been recorded in the ledger.

  • The defense that the payment has been made, even though the current account balance clearly shows a debit.

In cases like these, the ledger might not act as "evidence in favor," but rather admission against the defendant .


5) When is it Definitive Evidence? (The Power of the Book diminishes when the conditions are changed)

The main circumstances under which a commercial ledger is reduced to the level of discretionary evidence are:

5.1. Procedural deficiencies / lack of certification / record inconsistencies

If the standards required by Article 222 of the Code of Civil Procedure are not met, the claim that the ledger serves as evidence in favor of the plaintiff is weakened.

5.2. The issue of "one-sided recording" appearance and supporting documents

There is a fact, debated in legal doctrine but powerful in practice, that the argument for evidence in one's favor becomes fragile in most courts when it is not supported by documentary evidence (invoices, delivery notes, contracts, bank statements, delivery receipts, email correspondence, etc.). This debate becomes even more significant in the application of Article 222/5 of the Code of Civil Procedure.

5.3. If the counter ledger could not be examined

This is one of the most critical thresholds in determining the evidentiary value of the ledger. Reaching a conclusion based solely on one side's ledger, without seeing the opposing ledger, often increases the risk of invalidating the judgment.


6) Avoiding the Presentation of Ledgers: A Mechanism That Shifts the Burden of Proof

6.1. Article 220 of the Code of Civil Procedure – Sanction for failure to submit documents

Commercial ledgers are often subject to the "document" submission regime in court proceedings. When it is determined that the submission of the ledger is mandatory and lawful, refusal to submit it procedural consequences .

6.2. Article 222/5 of the Code of Civil Procedure – Reliance solely on the opposing party's ledger

Even if one of the parties is not a merchant, the merchant's exclusively makes the presentation of evidence extremely critical; failure to present evidence whether the claim should be considered proven . This area, if properly structured in practice, provides significant advantages.

6.3. The Supreme Court's line of reasoning: "There is no evidence in favor of the defendant without examining the counter-argument" and the consequences of avoiding presentation

The Supreme Court's approach, particularly in commercial debt/objection cancellation cases, is clear: In most cases, it is not accepted that the accounting records of the party relying on should be considered "evidence in favor" without examining the opposing party's accounting records.
Furthermore, it is emphasized that the sanctions under Article 220 of the Code of Civil Procedure should be applied in cases of unjustified refusal to present accounting records.

 The Evidential Value of E-Ledgers: Certificate, Time Stamp, Closing Logic

In the e-ledger system, "compliance with the procedure" is often discussed in terms of the following three points:

  1. Creating the ledger within the required period ,

  2. receipt of certificate / existence of certified certificate,

  3. Ensuring that the technical processes replacing the closing approval are carried out in accordance with the regulations.

This area of the Revenue Administration ; the deadlines and the closing-approval logic are detailed in the circulars.

Practical conclusion:
The debate over the "evidentiary value" of e-ledgers often begins with the question of "are there proper procedures and authorization?" before even considering "are there records?". If the procedures are lacking, the records can easily be reduced to the level of discretionary evidence.


8) Litigation Strategy: Roadmap to Follow When Relying on Commercial Ledgers

The following strategy significantly reduces the risk of losing the file through a "ledger dispute":

8.1. Before the trial: Prepare your notebook to meet the "evidence in favor of" standard

  • Confirmation/approval, record consistency, period integrity check

  • Filing of supporting documents (invoice/delivery note/contract/bank records)

  • Archiving of certificates and technical logs in the e-ledger

8.2. Within the lawsuit: Be sure to establish the "counterbook" maneuver

If the aim is to obtain evidence in favor of the plaintiff, then by interim decision:

  • submission of the relevant period ledgers by the other party,

  • comparative examination by an expert ,

  • to determine the consistency/inconsistency of the records
    .

8.3. In case of refusal to present: Invoke Article 220 of the Code of Civil Procedure

The case is broken here when the other party says "I'm not submitting it." If there is an unjustified avoidance:

  • Article 220 of the Code of Civil Procedure sanctions,

  • If necessary, the oath-taking mechanism and procedural consequences
    should be requested.

 Frequently Asked Questions

1) Does a commercial ledger alone prove a debt?

It depends on the circumstances. If the conditions of Article 222 of the Code of Civil Procedure are met and the obstacle of counter-bookkeeping is overcome, the commercial ledger very strong evidence; if the conditions are not met, the judge discretionary assessment.

2) What happens if the other party doesn't present their ledger?

Depending on the situation, sanctions under Article 220 of the Code of Civil Procedure are applied; furthermore, if the claim relies exclusively on the opposing party's ledger under Article 222/5 of the Code of Civil Procedure, the consequences may be even more severe.

3) If the ledgers are fraudulent, will they still be useful?

An improperly kept ledger often cannot be used as evidence in your favor; however, evidence against you in the case.

4) Is an e-ledger as strong evidence as a traditional ledger?

Yes; however, what is decisive is not so much the "registration" itself, but rather the certificate and procedural compliance.

5) What does it mean to say "conclusive evidence"?

In practice, according to Article 222 of the Code of Civil Procedure, this means that the party wishing to challenge the entry in the ledger of refutation with conclusive evidence .

6) Is the approach that "there is no evidence in favor without examining the opposing ledger" really that important?

Yes. Especially in cases such as those concerning the cancellation of commercial receivables/objections Supreme Court rulings consider the examination of counter-books to be critical.


Commercial ledgers have the potential to be "one of the strongest pieces of evidence" in commercial litigation; however, this power is not automatic . The source of this power lies in the procedural compliance required by Article 222 of the Code of Civil Procedure , the consistency of the records , exceeding the threshold for counter-ledgers , and the correct application of sanctions for avoidance of submission.

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