E-Invoice and E-Ledger Thresholds in Turkey for 2026

A Turkish company now deals with electronic records from its first day. Since 1 January 2025, every company that keeps balance-sheet books keeps its journal and general ledger as e-Ledger (e-Defter). Since 1 January 2026, a company that is not in the e-Archive system must still issue its invoices as e-Archive invoices, whatever the amount. e-Invoice (e-Fatura) itself still depends on turnover, activity or a direct notice from the Revenue Administration (GİB).

Foreign ownership changes none of these tests. A limited liability company (LLC) or joint stock company (JSC) owned from abroad is measured exactly like a locally owned one. This guide sets out the 2026 thresholds and start dates in the order we check them as an SMMM office, with the official text behind each one. For the incorporation steps themselves, start with our guide to incorporating a business in Turkey.

The Short Answer

• e-Ledger applies to every LLC and JSC. Trading companies are first-class merchants under Tax Procedure Law (VUK) Article 177, and first-class merchants keep balance-sheet books under Article 176. Balance-sheet taxpayers have been inside e-Defter since 1 January 2025; a company that starts business later joins from its start date.
• Invoices are now electronic, whatever the amount. For invoices issued from 1 January 2026, a company outside the e-Archive system must issue them as e-Archive invoices regardless of amount, through the GİB portal or an authorised private integrator. Between two registered e-Invoice users, every invoice must be an e-Invoice.
• e-Invoice has a general test of TRY 3 million. A company whose gross sales revenue reaches TRY 3 million for 2022 or a later year must join from the start of the seventh month of the following year: 1 July for a calendar-year company.
• Online sellers face a TRY 500,000 test. The same lower test applies to businesses that build, manufacture, buy, sell or rent real estate or motor vehicles, or act as intermediaries in those deals.
• Some activities are in scope regardless of turnover, and GİB can bring in a taxpayer it has identified as risky or as having low tax compliance, by written notice with at least three months to prepare.

Where the Rules Come From

Three official texts carry almost everything in this guide:

• VUK General Communiqué No. 509, published by GİB in a consolidated version that includes later amendments. It governs e-Invoice, e-Archive, e-Delivery Note and the other e-documents. Communiqué No. 573 (Official Gazette, 12 November 2024) introduced the amount-free e-Archive rule from 2026, and Communiqué No. 589 (31 December 2025) deferred it to 2027 for simple-method and business-account taxpayers only.
• Electronic Ledger General Communiqué No. 1, as amended by Communiqué No. 5 (Official Gazette, 8 November 2024, No. 32716) and Communiqué No. 6 (Official Gazette, 31 December 2024, No. 32769). Communiqué No. 5 brought all balance-sheet taxpayers into e-Defter.
• VUK Communiqué No. 588 (Official Gazette, 31 December 2025, No. 33124, 5th repeat issue), which raised the fixed penalty amounts by the 2025 revaluation rate of 25.49% for 2026.

e-Invoice Thresholds and Start Dates

The revenue tests measure gross sales revenue (brüt satış hasılatı, or sales plus gross business revenue for mixed businesses). They do not measure profit, bank receipts or net marketplace payouts. In the online-seller row, the text refers to the taxpayer’s gross sales revenue, so a company that sells both online and offline should not test its web sales alone.

What this means for a newly formed company

Communiqué No. 509 does not put a newly formed company into e-Invoice on day one under the revenue tests. The company enters when it meets a test, falls into one of the activity groups above, receives a GİB notice or joins voluntarily, which the Communiqué allows below the thresholds.

There are two restructuring rules worth knowing. If a company that was obliged to use e-Invoice merges, demerges completely or changes its legal form, the resulting company must join no later than three months from the start of the month after the trade registry registration. The same three-month limit applies when a sole proprietorship that was inside e-Invoice converts into a capital company.

Once a company is an e-Invoice user, invoices it issues to and receives from other registered users must be e-Invoices, apart from the Communiqué’s exceptions. GİB publishes the list of registered users on ebelge.gib.gov.tr, so the recipient’s status should be checked when the invoice is issued.

The 2026 e-Archive Rule

Before 2026, a company outside the e-Archive system only had to use e-Archive for larger invoices: in 2025, for invoices above TRY 3,000 including taxes. For invoices issued from 1 January 2026, the amount no longer matters. Section IV.2.4.3 of Communiqué No. 509 requires those invoices to be issued as e-Archive invoices through the GİB e-document portal or an authorised private integrator, apart from the exceptions in the Communiqué. Simple-method taxpayers and taxpayers that keep business-account books (işletme hesabı) have until 1 January 2027, but that relief does not reach an LLC or JSC.

The same section sets the penalty for getting it wrong. If a paper invoice is issued or accepted instead of an e-Archive invoice, the VUK Article 353 penalty applies for each paper invoice, separately to the issuer and to a recipient that is a registered taxpayer rather than a final consumer.

When e-Ledger Starts and How Filing Works

Who is in scope

Communiqué No. 5 added balance-sheet taxpayers to the mandatory e-Defter list. Those already keeping balance-sheet books joined on 1 January 2025. A taxpayer that starts business, restarts, changes class or loses an exemption on or after that date joins from that date. A company with a special accounting period joins from the start of its period beginning in 2025. Because every trading company is a first-class merchant, a new LLC or JSC keeps e-Defter from its start date, whatever its revenue, and long before any e-Invoice test applies to it.

GİB’s own e-Defter summary adds two warnings. It opens the e-Defter account of a taxpayer that has not joined on time ex officio, from the date the obligation started. And ledgers kept on paper after that date are treated as never kept.

What is kept electronically

The journal and the general ledger are kept as e-Defter. Communiqué No. 6 allows the inventory book (envanter defteri) to be kept in e-Defter optionally and lets GİB make it mandatory by an announcement on edefter.gov.tr, so check the current position before the year-end close. For how these books fit with the Ministry of Trade’s electronic corporate books, see our guide to official books and the company seal.

To join, a legal entity needs a financial seal (mali mühür) or Digital Tax Office or e-Government (e-Devlet) credentials, and its ledgers must be kept with software that has GİB’s compatibility approval.

Upload deadlines for a company

Under Communiqué No. 1 as amended by Communiqué No. 5, a corporate taxpayer must create, sign or seal and upload its monthly e-Defter and berat files:

• by the end of the 14th day of the fourth month after the month concerned, so January’s files are due by 14 May; and
• for the last month of the accounting period, by the end of the 14th day of the month after the month in which the corporate tax return is due.

A company may instead choose, in the first month of each accounting period (or the month it starts business), to upload by temporary-tax period. In that case the files for each month of the period are due by the 14th day of the month after the month in which the corporate provisional tax return is due. The months after the third provisional period follow the corporate tax return calendar instead, and the choice stays in force for later accounting periods unless it is changed within the notification month. Standards, technical guides and other e-Defter rules are announced on edefter.gov.tr, so check it before each deadline rather than relying on last year’s calendar.

Choosing the Technical Route

Communiqué No. 509 offers three ways to use e-documents: the GİB portal, an authorised private integrator, or direct integration of the company’s own system after GİB approval. The portal is built for users without their own integrated systems, and GİB may limit which documents can be issued through it. A private integrator is common, but it is a commercial choice, not a legal requirement. The obligations to issue correctly, store and present the documents stay with the company whichever route it uses.

e-Delivery Note (e-İrsaliye) has its own scope. Among others, e-Invoice users whose gross sales revenue reaches TRY 10 million for 2021 or a later year must move to it from the seventh month of the following year, and some sectors, such as iron and steel under customs tariff chapters 72 and 73, are in scope regardless of turnover. Other e-documents have separate rules that are outside this guide.

Penalties in 2026

The VUK penalty amounts below are the 2026 figures in the table attached to Communiqué No. 588.

• Paper instead of a required e-document (VUK Article 353/1): 10% of the amount that should have appeared on the document, with a floor of TRY 17,000 for the first detection in a calendar year. The floor rises for later detections under the Law’s Table 2 (TRY 35,000, 53,000, 70,000, 87,000, then 170,000). The total for one document type in a calendar year is capped at TRY 17,000,000.
• Worked example: a company issues a paper invoice for TRY 250,000 when an e-Archive invoice was required. 10% of TRY 250,000 is TRY 25,000, which is above the TRY 17,000 floor, so the issuer faces TRY 25,000 for that first detection. A business customer that accepted the paper invoice faces its own penalty under the same article. Article 353/1 spares a buyer its penalty if, before the administration learns of it, the buyer reports to the tax office within five business days after the document was due that the required document was not issued; check promptly with your adviser whether that route fits your case.
• Failing to meet e-document obligations: Communiqué No. 509 rests on VUK Articles mükerrer 242 and mükerrer 257. Article mükerrer 355 penalises breaches of obligations imposed under those articles; for a trading company, a first-class merchant, the 2026 amount is TRY 35,000, and it is doubled if the company still does not comply within a further period given after the penalty.

Not every paper document is penalised. Communiqué No. 509 lists cases where no special irregularity penalty applies: failures in GİB’s systems, documented failures or planned maintenance of the company’s or its integrator’s systems, a broken or stolen financial seal while a replacement is obtained, and paper issuance that GİB itself has permitted. Force majeure under VUK Article 13 is also excluded. Problems that come from the company itself do not count. A penalty can also be reduced under VUK Article 376 when the company accepts it and pays on time; our guide to tax audit preparation in Turkey explains that route.

A Setup Checklist for a New Company

1. Record the triggers. Write down the start date, the activity codes, any licence or SGK contract, and the gross sales tests that could apply. Note the exact paragraph of Communiqué No. 509 behind each date.
2. Arrange credentials early. Obtain the financial seal or confirm Digital Tax Office access, and decide who in Turkey operates it. Plan this before the first invoice is due, especially when the managers live abroad.
3. Pick compatible e-Defter software and an e-document route. Check that the software has GİB approval and that the integrator, if any, is authorised.
4. Configure invoicing. Set the e-Invoice and e-Archive scenarios, export, VAT exemption and withholding cases, returns and cancellations, and the registered-user lookup.
5. Elect the e-Defter upload schedule in the first month and diarise the 14th-day deadlines.
6. Reconcile monthly. ERP, integrator, accounting and GİB status reports should agree before the ledger is closed.
7. Keep the evidence for at least ten years. TTK Article 82 requires books and supporting documents to be kept for ten years from the end of the calendar year of the last entry, longer than the five years in VUK Article 253, and e-Defter files must be kept in the company’s own IT systems within Turkey. An integrator contract does not move that duty away from the company.

Our monthly accounting guide shows how these steps fit into the regular closing cycle, and our overview of e-Invoice and e-Ledger for foreign companies explains the systems in plainer terms.

Official Sources Used for This Review

• Revenue Administration: consolidated VUK General Communiqué No. 509
• Revenue Administration: Electronic Ledger General Communiqué No. 5 and No. 6
• Revenue Administration: e-Defter transition summary
• Revenue Administration: VUK General Communiqué No. 588 and VUK Article 353
• Revenue Administration: Tax Procedure Law No. 213

e-Invoice and e-Ledger Support for Foreign-Owned Companies

Celikel CPA sets up the e-Defter, e-Archive and e-Invoice file for newly formed and existing foreign-owned companies, tracks the thresholds each year and keeps the monthly ledger and upload calendar. We work with clients of every nationality. Consultations, correspondence and reports are in English (or Turkish, if preferred); official applications are made in Turkish. See our accounting services in Turkey or contact us with your planned activity and sales channels.

Reviewed against official sources available on 19 October 2026. Thresholds, penalty amounts and deadlines change, so confirm the current position before filing.