GİB's New e-Beyan VAT Filing Platform Reaches Ankara and Kocaeli: What Foreign-Owned Subsidiaries Need to Know

If your Turkish subsidiary or its accountant files VAT returns from Ankara or Kocaeli, the filing screen changed this week. Türkiye's Revenue Administration (Gelir İdaresi Başkanlığı, GİB) has been quietly replacing its decades-old Beyanname Düzenleme Programı (BDP) with a new, open-source platform called e-Beyan, and the rollout just reached two provinces that matter a great deal to foreign investors: Ankara, the capital and a major services hub, and Kocaeli, home to some of Türkiye's largest automotive and chemicals manufacturing plants.

What is e-Beyan?

e-Beyan is GİB's modernized infrastructure for preparing and submitting VAT returns. It replaces the old desktop-based BDP software with a newer, openly developed system. This is not a new tax, a new rate, or a new obligation — your filing deadlines, VAT rates and liabilities are unchanged. What changes is the technical channel through which the return is prepared and transmitted, which in practice means your SMMM (certified public accountant) or in-house finance team is now working inside a different piece of software for the same monthly task.

How did the rollout get here?

e-Beyan didn't appear overnight. GİB began piloting the platform in August 2025 with two provinces, Eskişehir and Kırşehir, then expanded it in stages through 2026. The most recent large jump came on 1 July 2026, when 36 more provinces — a mix of eastern, southeastern, Black Sea and Marmara-region provinces such as Şanlıurfa, Diyarbakır, Samsun, Tekirdağ and Balıkesir — moved onto the platform for the 2026/June filing period. The batch covered in this article, effective 1 August 2026 for the 2026/July period, is the next step in that same rollout. Reading the pattern this way, Istanbul's continued use of the legacy BDP looks less like a permanent exception and more like the last stop on a schedule GİB has been working through methodically for a year.

Which provinces moved as of August 2026?

Effective the July 2026 filing period (returns filed from 1 August 2026), GİB added 18 more provinces to e-Beyan: Ankara, Kocaeli, Hatay, Kahramanmaraş, Trabzon, Malatya, Osmaniye, Adıyaman, Batman, Rize, Şırnak, Bitlis, Bingöl, Siirt, Kilis, Hakkari, Tunceli and Bayburt.

With this addition, VAT returns are filed through e-Beyan in every Turkish province except Istanbul, which for now remains on the legacy Beyanname Düzenleme Programı. Given how much foreign direct investment sits in Istanbul, Ankara and Kocaeli specifically, most multinational subsidiaries in Türkiye now have at least one entity on each side of this transition — a detail worth flagging to your finance team and external CPA.

Which VAT returns does e-Beyan cover?

The platform currently handles the core VAT return set: KDV1, KDV2, KDV2B, KDV4 and KDV9015. Taxpayers registered in the newly added provinces must now submit these specific returns exclusively through e-Beyan — the old system is no longer an option for them, not an optional upgrade.

Why is GİB building this as open-source software?

GİB has been explicit that the point of e-Beyan is to move filing infrastructure off software tied to a single commercial vendor and onto an openly developed codebase that the tax administration can maintain and extend on its own schedule. For a foreign-owned subsidiary, this detail mostly matters as context rather than action: it explains why the migration is happening gradually, province by province, rather than as a single cutover — GİB is testing and hardening the platform in production against a growing taxpayer base before retiring the old system entirely.

Does this change what my subsidiary owes or when it files?

No. e-Beyan is a platform migration, not a tax policy change. VAT rates (20%, 10% and 1%), monthly filing cadence, and the KDV withholding mechanism that foreign operators already navigate remain exactly as they were. The practical impact is procedural: your SMMM's software changes, and if your finance team submits or reviews filings directly rather than delegating everything to an outside accountant, staff may need a short walkthrough of the new interface before the next filing deadline.

Why should a foreign-owned subsidiary care about a back-office IT migration?

Three reasons this is worth more than a footnote for foreign investors:

1. Manufacturing exposure in Kocaeli. Kocaeli hosts a dense cluster of automotive, petrochemical and heavy-industry plants, many of them foreign-owned or foreign-invested. If your entity is registered there, this filing-period change lands directly on your team.
2. Ankara as an administrative and services base. A meaningful share of foreign-owned shared-service centers, government-facing entities and holding structures are registered in Ankara rather than Istanbul.
3. This is a rolling migration, not a one-time event. GİB has already expanded e-Beyan coverage in stages over 2026 — first a handful of provinces, then a larger batch, now these 18. Istanbul-registered entities should expect the same transition eventually rather than assume the legacy system is permanent.

What should we do before the next filing deadline?

• Confirm with your SMMM or in-house accountant which system your registered province now uses — if you're in Ankara, Kocaeli, or any of the 17 other provinces listed above, it's e-Beyan as of the July 2026 period.
• If your subsidiary reviews or co-signs VAT filings internally rather than leaving the entire process to an external accountant, ask for a short screen-share of the new e-Beyan interface before the next deadline so nothing is missed under time pressure.
• If you operate multiple Turkish entities across different provinces, map out which ones are now on e-Beyan and which (Istanbul-registered, for now) remain on the legacy system, so your group's compliance calendar reflects two parallel processes rather than one.
• Treat this as a prompt to review your broader VAT filing workflow — this is a natural moment to consider whether return data is flowing cleanly from your ERP into whichever platform your SMMM uses, rather than being re-keyed by hand each month.

The Birasyo Compliance module keeps VAT-relevant transaction data structured and export-ready regardless of which government filing platform your accountant uses on the other end, and the Accounting module ties every VAT-bearing transaction back to its source document — useful when a filing-system change is a good occasion to double-check that your books and your returns still reconcile cleanly.

Summary

• GİB is migrating VAT return filing from the legacy BDP software to a new open-source platform called e-Beyan, province by province.
• Effective the July 2026 filing period (from 1 August 2026), 18 more provinces joined e-Beyan: Ankara, Kocaeli, Hatay, Kahramanmaraş, Trabzon, Malatya, Osmaniye, Adıyaman, Batman, Rize, Şırnak, Bitlis, Bingöl, Siirt, Kilis, Hakkari, Tunceli and Bayburt.
• Every Turkish province except Istanbul now files VAT returns (KDV1, KDV2, KDV2B, KDV4, KDV9015) through e-Beyan.
• Tax rates, deadlines and the KDV withholding mechanism are unchanged — this is a technical platform migration, not a tax policy change.
• Foreign-owned subsidiaries registered in Kocaeli (manufacturing) or Ankara (services, shared centers) are directly affected as of this filing period; Istanbul-registered entities should expect a similar transition later.

Sources: Gelir İdaresi Başkanlığı (Dijital Vergi Dairesi) announcement on the e-Beyan rollout for VAT returns KDV1/KDV2/KDV2B/KDV4/KDV9015, effective the July 2026 filing period; province list and platform-coverage details corroborated via Alomaliye.com and Turkish tax-advisory circulars (Verginet, Prozon) reporting on the same GİB announcement, August 2026. This is general information, not tax advice — confirm your entity's specific filing platform and obligations with a licensed Turkish CPA (SMMM).