The inward processing regime in Türkiye (Dahilde İşleme Rejimi, or DİR) is a customs regime under Article 108 of Customs Law No. 4458 that lets a manufacturer obtain imported inputs free of customs duty and import VAT, on condition that the inputs are processed and the resulting goods are exported. It works through two systems: under the suspension system, goods that are not in free circulation are imported without being subject to customs duties or commercial policy measures, the duties instead being secured by a guarantee that is released when the processed products are exported; under the drawback system, goods already in free circulation are imported with the duties paid, and those duties are repaid once the processed product is exported. The relief reaches import VAT as well as customs duty — the general VAT rate has stood at 20 percent since 10 July 2023 — which is why the saving is not limited to the headline tariff. The relief is conditional rather than permanent: if the export commitment is not met, the duties fall due together with penalties.
For a manufacturer that imports raw materials, processes them, and ships the finished goods abroad, paying full import duty on inputs that never stay in the country makes little economic sense. Türkiye’s inward processing regime exists precisely to remove that burden, and it is one of the most important tools available to the country’s export industry. This guide explains how the regime works, the choice between its two systems, the certificate and commitments that come with it, and what happens when those commitments are not met.
What the Inward Processing Regime Is
The Inward Processing Regime (Dahilde İşleme Rejimi, or DİR) allows a manufacturer to import inputs and raw materials without paying customs duty and import VAT, on the condition that the resulting goods are processed and then exported. It is one of several duty-relief customs regimes in Turkish law, sitting alongside customs warehousing, temporary importation and outward processing, and it is administered by the Ministry of Trade (Ticaret Bakanlığı). Its statutory basis is Article 108 of Customs Law No. 4458; the operating rules sit in the Inward Processing Regime Decision No. 2005/8391 of 17 January 2005 and the Inward Processing Regime Communiqué (İhracat: 2006/12) issued under it. Articles 108(3) to 108(8) of the Customs Law supply the building blocks the paperwork turns on — processing operations, processed products, equivalent goods (eşdeğer eşya) and the rate of yield (verimlilik oranı).
The logic is straightforward. Ordinary imports attract customs duty, import VAT, and sometimes special consumption tax or additional levies. Where the imported material is not destined for the domestic market but will leave the country again as part of a finished product, charging those duties would simply raise the cost of Turkish exports and blunt their competitiveness. The regime suspends or refunds the charges so that inputs used for export are, in effect, duty-free.
Suspension vs Drawback: Two Systems
The regime operates through two distinct mechanisms, and choosing between them is the first practical decision.
- Under the suspension system (şartlı muafiyet sistemi), goods that are not in free circulation are imported temporarily without being subject to customs duties or commercial policy measures. Article 108(1) of the Customs Law does not simply waive the duties: it requires them to be secured by a guarantee (teminata bağlanmak suretiyle), and the guarantee is released once the goods leave the Turkish Customs Territory as processed products. Nothing is paid up front, but the exposure is collateralised from day one.
- Under the drawback system (geri ödeme sistemi), the inputs are goods already in free circulation. The import duties collected when they entered free circulation are paid in the normal way, and Article 108(2) then provides for those duties to be repaid once the processed products are exported.
The difference matters for cash flow. Suspension keeps money in the business from the outset but ties the goods to a firm export plan. Drawback requires the importer to fund the duties first and recover them later, which is safer where there is any doubt about whether the export will actually happen.
| Feature | Suspension system | Drawback system |
|---|---|---|
| Status of the inputs | Not in free circulation | Already in free circulation |
| Duty and VAT at import | Suspended, secured by guarantee | Paid in full |
| Recovery | Guarantee released on export | Duties repaid after export |
| Cash-flow impact | Lighter up front | Heavier up front |
| Best suited to | Committed, regular exporters | One-off or uncertain exports |
The Authorisation Certificate
Access to the regime is not automatic. A manufacturer must first obtain an inward-processing authorisation certificate (dahilde işleme izin belgesi) from the Ministry of Trade, under the procedures set out in the Inward Processing Regime Communiqué (İhracat: 2006/12). The certificate is the legal backbone of the arrangement: it identifies the inputs to be imported, the finished goods to be exported, the quantities involved, and the period within which the cycle must be completed.
Because the certificate links specific imports to specific exports, the application needs to be built on realistic production and sales figures. Applying for the certificate before goods are imported, not after, is essential; the relief attaches to imports made under a valid certificate, and materials brought in outside it follow the ordinary import rules with full duty and VAT.
The Export Commitment and Time Limit
Every certificate carries an export commitment and a time limit. The commitment is the promise that the imported inputs will leave the country embodied in exported goods; the time limit is the window in which that must happen. Together they are the condition on which the whole relief rests.
This is the point traders most often underestimate. The regime is not a permanent exemption but a conditional one. The suspended or refunded duties become genuinely free of charge only when the export is completed and documented within the allotted period. Until then, the exposure remains on the books.
What Happens on Non-Compliance
If the export commitment is not met — the goods are sold domestically instead, the deadline passes, or the paperwork cannot prove the inputs were exported — the relief unwinds. The suspended customs duties and VAT fall due, together with penalties. In the drawback case, a refund that should not have been claimed can be recovered.
Treat the certificate deadline as a hard financial cliff. A missed export commitment converts a duty-free import into a duty bill plus penalties, often long after the goods and the margin on them are gone.
The amounts can be significant, because the duties that were set aside are calculated on the original imported value, and penalties are added on top. Where the imported inputs would otherwise have attracted additional or trade-defence duties — such as anti-dumping measures on goods from certain origins — the clawback can be substantially larger than the headline customs duty alone. In law the unwinding is triggered when the export commitment account is closed with a sanction, not when the certificate period expires; how that closure runs and how the penalty is measured is a separate question from the regime itself.
Why It Is Central to Turkish Export Manufacturing
For a country whose growth strategy leans heavily on exports, the inward processing regime is not a niche facility but a structural pillar. Sectors that import components or raw materials and re-export finished products — textiles, automotive, machinery, electronics, chemicals — rely on it to keep their input costs at world prices rather than world prices plus Turkish import duty.
It also interacts with Türkiye’s other trade infrastructure. Manufacturers weighing where to base an export operation often compare the regime with free zones, which under Article 6 of the Free Zones Law No. 3218 remain part of the Turkish Customs Territory but are deemed to lie outside it for the purposes of import duties, commercial policy measures and exchange legislation. The two serve overlapping purposes; the right choice depends on the production model, the destination markets, and how long goods need to sit before they move.
Practical Compliance Tips
The regime rewards discipline. A few habits make the difference between clean duty relief and an avoidable clawback:
- Reconcile imports against exports continuously, not at the deadline, so you know at any moment how much of the commitment is still open.
- Keep the document trail intact — import declarations, production records, and export declarations — so you can prove that the specific inputs became exported goods.
- Diarise the time limit and build in a margin; extensions may be possible but should never be assumed.
- Match the system to the certainty of the sale: suspension where export is firm, drawback where it is not.
Used well, the inward processing regime is a significant cost advantage for a Turkish exporter. The failures usually trace back to the same two causes — a missed deadline or a broken document chain — and both are manageable with planning at the outset. The certificate application, the choice of system and the reconciliation process are each worth working through before the first import.
