What is e-Adisyon (e-check)? Türkiye's 2026 mandate and transition guide

Friday night, a full dining room in Istanbul. A server takes the order at the table, sends it to the kitchen, the guests ask for the bill, and a receipt or invoice is issued at the till. The first link in that chain — the order check, or adisyon — was for years written by hand or printed from a simple cash register. Heading into 2026, Türkiye is digitizing that link for the food-and-beverage sector: e-Adisyon is the electronic, tax-authority-linked version of the paper order check. So what is e-Adisyon, who does it cover, and how does a venue prepare?

This guide covers e-Adisyon from the ground up — what it is, who falls in scope and the direction of the 2026 mandate, how the system works, how it relates to e-Fatura and e-Arşiv, the transition steps, and what a venue should prepare in advance. Because tax dates and thresholds change periodically, we explain the mechanism rather than quoting fixed numbers; always confirm your own business's current obligation with Türkiye's Revenue Administration (GİB) or your accountant (mali müşavir).

1Order / check2e-Adisyon (digital)3POS / e-Arşiv4Record & archive

What is e-Adisyon?

e-Adisyon is the electronic form of the paper adisyon — the order check used in table-service food-and-beverage venues — created, stored, and reported to GİB digitally. It is part of Türkiye's broader e-transformation (e-belge) programme and carries the same legal standing as the paper version; the only difference is that the document lives digitally rather than on paper.

One common misconception is worth clearing up right away: e-Adisyon is not an invoice. It records the order and supports service tracking, but the actual sales document is still an e-Fatura, an e-Arşiv invoice, or a receipt from a new-generation payment recording device (ÖKC). In other words, the adisyon documents "what was ordered" while the invoice documents "what was paid" — the two complement each other.

e-Adisyon is not an invoice; it is the digital record of the order — but keeping that record cleanly is what firms up both the invoice and any future audit.

Who is in scope, and the 2026 direction

The e-Adisyon obligation mainly targets table-service food-and-beverage businesses taxed on a real basis (gerçek usul): restaurants, cafés, bars, patisseries, and similar venues. As a general rule, the requirement is tied to businesses already inside the e-Fatura or e-Arşiv system; some self-service-oriented formats may fall outside it.

Scope has been widening in phases each year, and the 2026 direction follows the same path: progressively more hospitality businesses are drawn into the e-belge system and therefore into e-Adisyon. GİB typically notifies affected taxpayers in writing or via ebelge.gib.gov.tr and grants a reasonable preparation window. Understanding how e-Fatura and e-Defter thresholds are set makes it easier to see where your business sits in this chain.

Let us be explicit: because the exact turnover threshold, sector split, and effective date can change over time, we do not quote them as fixed numbers here. The safest approach is to verify whether your venue is currently in scope — and, if so, its transition date — through GİB or your mali müşavir. This matters especially for foreign-owned venues, where such obligations are easy to overlook.

How e-Adisyon works

The workflow maps onto a venue's daily rhythm. An order is taken, the e-Adisyon is created electronically, the food is served, and when the bill is requested, payment is collected and the sales document is issued. Throughout, the e-Adisyon sits as the digital record of the order and is ultimately linked to the invoice that closes it.

Technically, e-Adisyon connects to the ÖKC/POS at the point of sale and to the e-Fatura/e-Arşiv flow. The document references the related invoice's universal unique identifier (ETTN) or the ÖKC device serial number, so "which order check linked to which invoice" stays traceable. The invoicing step at the end of service completes as the adisyon closes.

An e-Adisyon document typically carries:

• Business details: trade name and tax identification number.
• Order details: date and time, table number, line items, and amounts.
• Tax details: the VAT-inclusive amount and tax totals.
• Link reference: the related e-Fatura/e-Arşiv ETTN or the ÖKC serial number.

A concrete example helps: a table of four sits down, the server enters the orders on a tablet or handheld, and an e-Adisyon opens at that moment. When a dessert is added later, the adisyon updates. When the bill is requested, the total is finalized, payment is collected, and the issued e-Arşiv invoice or ÖKC receipt is linked to that adisyon. Every step — from opening the order to payment — converges on a single digital trail that eases both daily operations and month-end reconciliation.

The benefits of e-Adisyon

The word "mandate" tires most operators, yet e-Adisyon's practical benefits show up quickly in day-to-day operations. The most visible win is losing the paper; the real value, though, is in cleaner records and audit readiness.

• Less paper, fewer losses: digital, searchable records instead of handwritten slips that tear or go missing.
• Fewer errors: discrepancies between the order and the invoice shrink, and "the table's bill doesn't add up" problems become visible.
• Clean records and audit readiness: because each adisyon links to its invoice, backward tracing is easy and documents stay complete in any review.
• Reporting: questions like which item sold when, or how much revenue a table produced, become answerable from data.

These benefits stand out most in busy, many-table venues: slips lost at shift change and the "where is this table's adisyon" scramble shrink, and the team spends more time on guests than on chasing paper. The biggest long-term gain is trust — a venue with tidy records is far more comfortable with both its accountant and the authority.

How to transition

Moving to e-Adisyon is not a single button press; it is a short, multi-step preparation. The good news is that most of these steps run through a GİB-approved partner.

Step by step

• Move to e-Fatura/e-Arşiv: e-Adisyon generally requires being inside this system, so it is the first step.
• Get compliant software: choose an adisyon/POS package or e-belge solution that meets GİB criteria.
• Obtain a financial seal or e-signature: required to sign documents electronically.
• Select an integrator: decide between a special integrator (özel entegratör) or direct integration with GİB.
• Configure and apply: finish the system definitions and submit your application via the GİB portal.

The step that confuses people most is usually choosing the integrator. There are two basic routes: direct integration through the GİB portal, or working with a special integrator (özel entegratör). For most small and mid-sized venues, the special-integrator route is more practical — the provider shoulders most of the technical load while you focus on operations. When picking a provider, it is worth asking about compatibility with your existing POS/ÖKC, the quality of support, and whether they also offer e-Fatura and e-Arşiv under the same roof.

What smooths the transition is planning these steps as a whole rather than one at a time. Clarifying the difference between e-Fatura and e-Arşiv up front helps you set which document type applies to which customer correctly from the start.

What a venue should prepare

Operational readiness before the technical application makes the switch painless. A small café and a multi-branch restaurant chain have different needs, but a few common headings apply:

• Menu and product data: items, prices, and VAT rates correctly defined in the system.
• ÖKC/POS compatibility: whether your existing register and POS support e-Adisyon.
• Staff: servers and cashiers getting used to the new flow.
• Financial groundwork: the financial seal, integrator agreement, and coordination with your accountant.

This preparation also touches the guest side; moving to a digital flow without disrupting the experience at the table matters. Venues that run a CRM for restaurants or organize a setup for cafés and bakeries already keep order and customer data in one place, so they adapt to the e-Adisyon flow more easily.

Relationship to e-Fatura, e-Arşiv, and pre-accounting

Rather than treating e-Adisyon as a standalone burden, it helps to view it as part of a bigger picture. The chain of order (adisyon) → sales document (e-Fatura/e-Arşiv/ÖKC receipt) → collection → record is, in effect, a venue's pre-accounting (ön muhasebe) itself.

When this chain is set up properly, e-Adisyon becomes a link that eases pre-accounting rather than complicating it: orders drop into records automatically, invoices attach to order checks, and collection and current-account tracking feed off that same data. Data integrity is equally critical for venues that speed up collection with payment links.

In short, e-Adisyon is not merely a GİB mandate; set up well, it is an opportunity to clean a venue's revenue record end to end.

Frequently asked questions

e-Adisyon may look like a burden at first glance, but it is really a chance to digitize a hospitality venue's revenue record — cutting paper, making errors visible, and building an audit-ready order. Just remember to confirm exact dates and thresholds with GİB or your mali müşavir. For venues that want to bring this order-to-record chain onto one screen, a CRM plus pre-accounting solution like Rocketly can keep order, customer, and collection data together, turning the e-Adisyon workflow into a natural part of daily operations.