New businesses meeting the threshold must transition to e-Fatura by 1 July of the year following the year they exceeded TRY 3,000,000 revenue. Businesses already active at the date of the threshold crossing transition by the start of the following tax year. Certain regulated sectors (banks, insurance companies, importers, organised retail) have mandatory e-Fatura regardless of revenue.

E-Fatura ve E-Arsiv Uygulamasi (E-Invoice Compliance Deadline)

Turkey's mandatory e-invoice system. Businesses above annual revenue thresholds (TRY 3,000,000) must use e-Fatura for B2B invoicing and e-Arsiv for all other invoices. The GIB Portal system or a licenced e-dönüsüm company is used. Non-compliant invoices are not legally valid for tax purposes.

Who this applies to

  • All businesses with annual revenue exceeding TRY 3,000,000 (2024 threshold — reviewed annually)
  • All importers and exporters regardless of revenue (mandatory from the date of first import/export transaction)
  • All e-commerce operators regardless of revenue
  • Banks, insurance companies, financial intermediaries, and capital market institutions
  • Businesses already on e-Fatura issuing invoices to other e-Fatura registered entities must use e-Fatura format

What to file

Not a tax declaration — an ongoing operational requirement. Each invoice issued to an e-Fatura registered business must be issued in e-Fatura format via the GIB Portal or a licensed e-transformation service provider (e-dönüsüm firması). Invoices to non-e-Fatura entities are issued as e-Arsiv. All invoices above TRY 30,000 (B2C) must be e-Arsiv format.

How to file

Via GIB e-Fatura Portal (direct, free), or through one of approximately 100 GIB-licenced e-dönüsüm service providers (paid service, integrates with accounting software). E-dönüsüm providers offer API integration with accounting systems, automatic validation, and archiving. Most medium and large businesses use a service provider rather than the GIB Portal directly.

Payment due

Not a payment — an operational compliance requirement. Penalty for non-compliance accrues from each transaction date where a valid e-Fatura should have been issued.

Penalties for missing this deadline

Issuing a paper invoice instead of a mandatory e-Fatura: Ozel Usulsuzluk Cezası of 10% of the invoice amount, minimum TRY 8,800 per invoice (2025 rate). The paper invoice is not legally valid as a tax document for the recipient — they cannot claim KDV input tax on a paper invoice that should have been e-Fatura. Repeated non-compliance: escalating fines and potential forced e-Fatura suspension.

Filing checklist

  • Annual revenue reviewed against current threshold (TRY 3,000,000 for 2024-2025) to determine if e-Fatura is required
  • Registration with GIB e-Fatura system via GIB Portal completed
  • Decision made: GIB Portal (free, manual) vs e-dönüsüm service provider (automated, cost ~TRY 2,000-8,000/year)
  • All existing customers checked against GIB e-Fatura registered taxpayer list
  • E-Arsiv setup completed for invoices to non-e-Fatura entities and consumers
  • E-Defter (electronic accounting books) setup completed — mandatory for e-Fatura users

Common mistakes to avoid

  • Issuing e-Arsiv invoices to businesses that are e-Fatura registered — recipients cannot use e-Arsiv as a valid tax document for their input KDV claims; must reissue as e-Fatura
  • Assuming the TRY 3,000,000 threshold is based on net-of-KDV turnover — it is gross turnover including KDV
  • Failing to set up e-Defter at the same time as e-Fatura — both are mandatory together; e-Defter must be activated within one month of e-Fatura activation
  • Using unauthorised software or templates to generate e-Fatura format invoices without GIB system integration — these are not valid e-Faturas and carry the same penalty as paper invoices

Never miss a Turkey deadline

AccountsOS tracks every GIB (Gelir Idaresi Baskanligi) and MERSIS (Trade Registry) deadline and reminds you weeks ahead.

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