"We've moved to e-Fatura (Türkiye's e-Invoice system); how do we automate our invoicing and reconciliation processes now?" For many finance teams that completed e-transformation as a compliance project, this is the question on the table today. The timing matters, too. Under the rule updated by Communiqué Serial No. 589, published in the Resmî Gazete (Türkiye's Official Gazette) of December 31, 2025, invoices issued by taxpayers that are not included in the e-Arşiv Fatura (e-Archive Invoice) application must be issued as e-Arşiv Fatura from January 1, 2026, regardless of the amount. For taxpayers whose commercial income is determined under the simplified procedure (basit usul) and for those who keep books on a business-account basis (işletme hesabı esası), this date was set as January 1, 2027.
In short, the scope of the mandate has widened with every amendment, and for a growing number of businesses the electronic document has become the standard way of invoicing. This article summarizes the framework of the mandate from the official text, then focuses on how e-document data can be used to reconcile orders, dispatch notes and invoices.
The framework: who uses which document?
e-Fatura was introduced by VUK (Tax Procedure Law) General Communiqué Serial No. 397 and has been in use since March 5, 2010. Today, the text that consolidates the rules, with its amendments, is VUK General Communiqué Serial No. 509. According to the communiqué, e-Fatura is not a new type of document; it has the same legal status as a paper invoice.
Section IV.1.4 of the communiqué lists the groups that are required to switch to e-Fatura. These include taxpayers whose gross sales revenue exceeds the threshold set in the communiqué; those licensed by EPDK (the Energy Market Regulatory Authority) and manufacturers or importers of goods on the ÖTV (Special Consumption Tax) List (III); e-commerce intermediaries and sellers above a certain revenue level; fruit and vegetable commission agents and merchants; health service providers and suppliers under contract with SGK (the Social Security Institution); real estate and motor vehicle businesses above a certain revenue level; certified hotels; and charging network operators. A taxpayer that exceeds the revenue threshold in an accounting period of 2020 or later must switch to e-Fatura from the beginning of the seventh month of the following year. For the current amount of the threshold, and for your own situation, you need to check the text of the communiqué.
The document type is determined by the buyer. If both parties are registered in the e-Fatura application, invoices between them are sent and received as e-Fatura; for buyers that are not registered, an e-Arşiv Fatura is issued. On the dispatch note side, too, e-İrsaliye (electronic dispatch note) is mandatory for certain groups. These groups include those registered in e-Fatura whose revenue exceeds a certain level, as well as taxpayers in sectors such as iron and steel, mining, sugar and fertilizer.
The applications can be accessed in three ways: the e-Belge (e-Document) portals of GİB (the Turkish Revenue Administration), the systems of private integrators authorized by GİB, and the company integrating its own system directly with GİB. This choice matters for automation. The portal method offers the basic functions, whereas getting data to flow automatically into the accounting and ERP systems generally requires integration.
Why is an e-document a data asset?
For e-Fatura, GİB adopted UBL-TR, an international XML-based standard that describes commercial processes with tags. In other words, the invoice that reaches you is not an image but a machine-readable record with defined fields. The fields that stand out for reconciliation are:
- Universal Unique Identification Number (ETTN): The number that makes each invoice unique. When written into the accounting record as a key, it helps prevent duplicate entries.
- Order and dispatch note references: The UBL-TR Invoice guide shows that order information (OrderReference) and one or more dispatch notes (DespatchDocumentReference) can be attached to the invoice. These fields are optional; whether they are filled in depends on the practice between the parties.
- Acceptance, rejection and return responses: In the Commercial Invoice scenario, the buyer can accept or reject the invoice with an application response. Invoicing under this scenario depends on the explicit consent of the parties. The seller records the incoming response by matching it with the invoice; for a return invoice, the BillingReference field can link the return invoice to the relevant sales invoice.
There is one limit worth knowing as well. The same guide leaves procurement, ordering, catalog and payment transactions outside the scenario, assuming these processes are carried out externally. In other words, e-Fatura does not build an end-to-end process on its own. Linking the order, the delivery, the invoice and the payment to one another is left to the company's own process and system design. This is exactly where the opportunity begins.
A practical path: reconciliation with e-document data
The steps below are a general method derived from the framework in the sources; each organization needs to adapt it to its own systems and obligations.
- Take an inventory of documents and channels. List which e-documents (e-Fatura, e-Arşiv, e-İrsaliye) you send and receive, how you access them, and how the data enters your ERP. Every point where data is transferred by hand is a first candidate for improvement.
- Process the XML, not the PDF. Instead of re-keying an incoming invoice from its image, take the structured data directly. Use the ETTN as the record key to prevent the same invoice from being processed twice.
- Set a reference rule with suppliers. Add a clause to your purchasing contracts and supplier guidelines requiring the order number and dispatch note information to be written into the relevant invoice fields. The three-way match between order, delivery and invoice depends on this data being present.
- Connect acceptance and rejection responses to the workflow. If you use the Commercial Invoice scenario, make sure rejection responses automatically land with the responsible unit and acceptance responses are matched to the invoice record.
- Rule-based matching, human-approved exceptions. Let invoices whose amount, quantity and reference match proceed automatically. Those that do not match should go to a specialist together with the reason; report the causes of exceptions regularly so the process can be improved.
- Measure the baseline today. Record the automatic match rate, the number of exceptions and the period-end close time at the outset. We covered which finance processes pay back faster, and how to prioritize them, in our finance automation article.
- Monitor the regulations. The rules can change; follow the announcements on ebelge.gib.gov.tr and the simplified-procedure and business-ledger side that comes into effect in 2027. Verify your obligations with your certified public accountant (mali müşavir) and your legal department.
Conclusion
e-Fatura started out as a compliance requirement; today it is one of the regular, structured data sources in the hands of finance teams. With the right process design, the ETTN, the order and dispatch note references and the application responses form the groundwork for rule-based reconciliation. What is decisive is that these fields are populated with a discipline shared with suppliers, and that data flows into systems without manual transfer.
Why logistics experience matters in e-document reconciliation. In a business that moves goods, the order, the dispatch note and the invoice meet at the warehouse dock, so three-way matching is only as reliable as the receiving and shipping routines behind it. One of Orient Global's consultants brings more than 30 years in operations, logistics and supply chain. At a technology distribution company of roughly one billion dollars in scale, he ran logistics, warehousing, technical service and administrative operations end to end, building and leading teams of 100+ people and delivering lasting gains in operational performance through KPI-driven programs. He has also managed nationwide warehouse and transport operations across leading retail, logistics and distribution organizations. An industrial engineer, he now brings that supply-chain discipline to SMEs through AI and automation. Meet our consultants.
From Orient Global's perspective, mapping the incoming invoice flow end to end and starting with a single matching rule could be a measurable first step in this transformation.
This article is for general information purposes only and does not substitute for legal advice.
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