When a foreign supplier or contractor sends me a Turkish tender notice for the first time, I am asked three things: whether it is allowed to bid at all, whether the Turkish competitor has a legal head start, and what happens if the award goes wrong. My answers are in Law No. 4734, the Public Procurement Law, and in the annual communiqué that resets its money limits every February. Foreign bidders are admitted; Turkey has no treaty obligation to admit them, since it is an observer and not a party to the WTO procurement agreement, so their position rests on the Law itself. A domestic bidder may be given a price advantage of up to fifteen per cent, and in some goods tenders must be. And the remedy is a two-step administrative complaint on short deadlines that must be exhausted before any court will listen. This page sets out the Law as it stands on the date checked, with the 2026 figures, for a company deciding whether a Turkish public contract is worth the cost of preparing for it.
Sources, checked 9 September 2026. Public Procurement Law No. 4734 (Official Gazette 24648, 22 January 2002, consolidated text including Law No. 7590 of 24 July 2026); Public Procurement Communiqué No. 2026/1 (Official Gazette 33145, 22 January 2026); the Public Works Procurement Implementing Regulation, Article 31; the WTO list of parties and observers to the Agreement on Government Procurement.
Who buys under the Law, and who counts as domestic
Article 2 brings within the Law the purchases of goods, services and works by general and special budget administrations, provincial administrations and municipalities and their affiliates, state economic enterprises, social security institutions, funds and public-law bodies, and any company more than half owned by them; commercial enterprises in energy, water, transport and telecommunications and certain banks are outside it. Article 3 lists the exceptions, of which two matter to a foreign company: purchases financed under an international agreement whose financing terms prescribe other procedures, and defence, security and intelligence purchases so designated. Article 4 defines a domestic bidder as a Turkish citizen or a legal person established under Turkish law, and Article 63(f) treats a joint venture as domestic only if every partner is. A foreign company that bids through a Turkish subsidiary formed under the company formation rules is therefore domestic for these purposes; one that bids from abroad is not. Turkey has held observer status under the WTO Agreement on Government Procurement since 4 June 1996 and has not acceded, so no treaty secures access, and Article 53(b)(8) empowers the Procurement Authority to propose countermeasures against bidders from a state found to bar Turkish bidders. The newest provision points the other way: Additional Article 13, added by Law No. 7590 and in force since 31 July 2026, authorises the President to extend the rights and advantages given to domestic bidders and domestic goods, in whole or in part and by country or product, to bidders established in European Union member states and to goods of European Union origin on the basis of reciprocity.
The 2026 thresholds and what crosses them
Article 8 sets three threshold values by estimated cost, and Article 67 has the Procurement Authority update them and every other money limit in the Law each 1 February by the producer price index; Communiqué No. 2026/1 applied an increase of 27.67 per cent for the period from 1 February 2026 to 31 January 2027. Article 5 forbids splitting a purchase to stay below them.
| Limit (Law 4734) | 2026 amount, TL | What it triggers |
|---|---|---|
| Art. 8(a), goods and services, general and special budget administrations | 18,734,124 | Above it: 40-day notice for open tenders, 14 days for prequalification, 25 days for negotiated; below it: shorter local notices and possible domestic-only tenders |
| Art. 8(b), goods and services, other administrations | 31,223,628 | Same |
| Art. 8(c), works, all administrations | 686,924,429 | Same; restricted procedure allowed for works above half of it |
| Art. 21(f), negotiated procedure for small purchases | 3,406,508 | Negotiation without notice for finished goods, materials and services |
| Art. 22(d), direct procurement | 1,021,827 in metropolitan areas, 340,391 elsewhere | Purchase without notice or security |
| Art. 53(j)(1), Authority contribution | contracts above 6,813,294 | 0.05 per cent of the contract price payable by the contractor |
Article 13 fixes the notice periods. At or above the threshold, an open tender is announced in the Public Procurement Bulletin at least forty days before the tender date, a prequalification at least fourteen days before the application deadline, and a negotiated procedure at least twenty-five days before, with a forty-day invitation to prequalified candidates; where the administration chooses to publish an international notice, twelve days are added to each minimum. Below the threshold the notice runs in a local newspaper and news site with seven-day and longer periods depending on the bands the communiqué updates each year. Article 63(a) allows a below-threshold tender to be reserved for domestic bidders, so a foreign company's realistic field is the above-threshold tender and the below-threshold tender that the administration has chosen not to reserve.
The procedures
Article 18 gives three procedures and Article 5 makes the open and the restricted procedure the basic ones. The open procedure admits every bidder. The restricted procedure, under Article 20, invites bidders selected in a prequalification and may be used where specialisation or advanced technology makes the open procedure unsuitable and for works whose estimated cost exceeds half the works threshold. The negotiated procedure, under Article 21, is confined to the listed cases: no bids in an open or restricted tender, urgency after disasters or unforeseeable events, defence and security urgency, research and development, purchases whose technical and financial terms cannot be defined with sufficient clarity, and small purchases up to the Article 21(f) limit; in the urgency and small-purchase cases no notice is required. Article 22 lists the direct procurement cases, without notice or security: a single supplier, an exclusive right, compatibility purchases from the original supplier for up to three years, the small amounts in the table, real estate purchases and leases, and certain medical and emergency supplies. Additional Article 2 permits framework agreements of up to forty-eight months through the open or restricted procedure, Additional Article 4 a dynamic purchasing system for off-the-shelf goods, and Additional Article 5 an electronic reverse auction after the evaluation stage in open, restricted and certain negotiated tenders.
Qualification, and the documents a foreign bidder must legalise
Article 10 lists what an administration may require. For economic and financial standing: bank references, the published balance sheet or its equivalent, and total or relevant turnover. For professional and technical capacity: proof of chamber registration and authority to bid, work experience certificates for the same or similar work, covering works accepted within the last fifteen years and goods or services accepted within the last five, with the eighty per cent performance thresholds the Article sets for supervised, managed and ongoing works; capacity, quality and staffing documents; and accredited quality certificates and samples where the document asks for them. Two rules bite on foreign experience. Work completion certificates for work performed abroad, other than for Turkish administrations, may be used only by the holder and within its group of companies, and where such a certificate is used in a joint venture the holder must furnish the bid and performance security in proportion to its share. Article 10 then excludes bidders who are bankrupt, in liquidation or under a court-administered arrangement, or in an equivalent position under the law of their own country; who have final social security or tax debts under Turkish law or the law of their own country; who were convicted for professional conduct in the five years before the tender; who were barred by their professional chamber; or who supplied misleading information or false documents. Article 11 bars anyone debarred from public tenders, anyone convicted of bribing public officials at home or abroad, and the administration's own decision-makers and their relatives and companies. The form of the documents is fixed by the implementing regulations: Article 31 of the works regulation accepts originals or notarised copies, exempts documents from states party to the Apostille Convention from consular legalisation if they carry the apostille, requires documents from other states to be legalised through the issuing state's foreign ministry and the Turkish consulate, and requires translations by a sworn translator, notarised in Turkey or certified abroad and legalised. Under Additional Article 1, notices, documents, submissions, evaluations, awards, contracts and complaints may all be run through the Authority's Electronic Public Procurement Platform, EKAP, and in practice a bidder must be registered there. A company that expects to bid repeatedly should compare this paperwork with the position of a Turkish subsidiary, and with the residence and management questions on the corporate residence page.
Bids, security and evaluation
Article 30 requires a single sealed envelope containing the bid letter, the bid security and every qualification document. Article 33 requires bid security of not less than three per cent of the bid price, and Article 34 accepts Turkish currency, bank letters of security and Turkish government debt securities; letters issued by foreign banks licensed in Turkey are accepted, as are letters issued by Turkish banks on the counter-undertaking of a bank abroad, which is the route a foreign bidder without a Turkish banking relationship normally takes. Bid security letters must run at least thirty days beyond the bid validity period (Article 35). Under Article 36 the commission opens the envelopes in public in the order received, checks completeness, and reads out the bidders, their prices and the administration's estimated cost. Article 37 permits written clarifications, never a change of price or a cure of a non-compliant bid, though missing information that does not alter the substance may be completed within a set period. Article 38 requires the commission to identify abnormally low bids against the other bids or the estimated cost and to ask for written justification before rejecting them. Article 40 awards to the economically most advantageous bid, on price alone or on price with operating cost, efficiency, quality and technical merit weighted in the tender document, and applies the domestic price advantage where the document provides for it. Article 41 has the result notified to every bidder within three days of approval, with reasons for exclusion, and bars signature for ten days after notification, five in the urgency cases. Article 42 then invites the winner to sign within ten days of the invitation, with twelve days added for foreign bidders, on furnishing the performance security of six per cent of the contract price required by Article 43; under Article 44 a winner who fails to sign forfeits its bid security and the administration may turn to the second bidder. For contracts above the Article 53(j)(1) limit the contractor also pays the Authority's contribution of five ten-thousandths of the contract price, which the administration and the notary must see paid before signature.
The domestic price advantage
Article 63 is the provision every foreign bidder should price into its offer. A below-threshold tender may be limited to domestic bidders. In service and works tenders a price advantage of up to fifteen per cent may be given to domestic bidders. In goods tenders a price advantage of up to fifteen per cent may be given to bidders offering domestic goods, and for goods on the list of medium and high technology industrial products announced by the Authority on the industry ministry's determination, and for domestic software, the fifteen per cent advantage is mandatory. Works tenders may require that all or part of the machinery, materials, equipment and software be domestic goods. Domestic origin is proved by a domestic goods certificate issued under the ministry's rules, and a joint venture qualifies as domestic only if all partners do. The advantage operates at the evaluation stage: the foreign bid, or the bid offering foreign goods, is compared after the domestic competitor's price has been notionally reduced by the stated percentage. Where the supplied goods are imported for the contract, the duties and controls on the import page sit on top.
Complaints, the Authority and the courts
Articles 54 to 57 create two mandatory administrative steps before any court action. A candidate, bidder or prospective bidder who claims a loss from an unlawful act in the tender process first complains to the administration, under Article 55, within ten days of the day it learned or should have learned of the act, five days in the urgency cases, and in any event before the contract is signed; complaints about the notice or the tender documents run from the notice or the purchase of the documents and must be filed no later than three working days before the tender date. The administration decides with reasons within ten days and notifies the decision within three days. A complainant dissatisfied with that decision, or with silence, then files an objection with the Public Procurement Authority under Article 56, within ten days of notification of the administration's decision or of the expiry of its ten-day period, and before the contract is signed; a cancellation of the tender adopted on a complaint may be objected to directly within five days. The Authority reviews the complainant's allegations, the matters decided by the administration and equal treatment, may hear the parties, and must decide within twenty days of the file being registered. The objection carries a fee set by Article 53(j)(2) and updated each year: for 2026, 64,652 TL where the estimated cost is up to 10,785,492 TL, 129,385 TL up to 43,142,132 TL, 194,085 TL up to 323,566,103 TL and 258,810 TL above that, with the part of the fee corresponding to the degree of success refunded under the 2025 amendment. Under Article 57 the Authority's final decisions may be challenged before the Turkish administrative courts, which hear these cases with priority. A contract signed in breach of the time limits, or a withdrawal of the objection, does not prevent the Authority from deciding. Disputes under the signed contract are a different matter, governed by the Public Procurement Contracts Law No. 4735 and the general courts, and arbitration is not available in the ordinary public contract; the concession contracts that may carry an arbitration clause are described on the arbitration page.
Prohibited conduct and debarment
Article 17 prohibits collusion, fraud, threats, bribery and influence over the process, conduct that deters or coordinates other bidders, false documents or false security, more than one bid by the same bidder directly or through others, and bidding while barred. Article 58 punishes these with a bar from the tenders of every public body, including those otherwise exempt from the Law, for one to two years, and a winner who fails to sign without force majeure with a bar of six months to one year. The bar extends to all partners of a partnership and, in a company limited by shares, to the shareholders holding more than half of the capital, and it follows those persons into other companies they control; the Authority keeps the register. A foreign group should note that a bar imposed on a Turkish subsidiary reaches the parent that holds more than half of it, and vice versa.
Whose side we are on, and how we are paid
The administration's tender commission applies the document it wrote. The Turkish competitor knows the advantage the Law gives it. The bank issuing the security letter is paid for the letter, not for reading the tender. None of them is paid to tell you, before the envelope is sealed, that your experience certificate cannot be used by your subsidiary, that the tender was reserved for domestic bidders, or that your ten days to complain ran from the day the notice appeared.
We take no commission or referral fee from banks, translators, bid consultants or local partners, in any form, on any file. The fee you pay us is our only income from your matter, and it does not depend on whether you bid, whether you win or whether you complain. Because our position does not move with the outcome, telling you that a tender is not worth the cost of preparing for it costs us nothing to say.
One boundary, stated plainly. We are lawyers, not licensed investment advisers and not bid writers. We do not price your offer or decide whether the contract makes commercial sense. What we protect is the Turkish legal position: eligibility, the legalisation and translation of your documents, the security instruments the Law accepts, the domestic advantage as it applies to your tender, the complaint and objection deadlines, the signing and security steps, and the contract itself.
Before you buy the tender documents
Send us the notice, the tender document if you have it, your corporate documents and experience certificates, and the structure you intend to bid through. We will tell you whether you are eligible and on what terms, what must be legalised and translated and by when, which security instruments will be accepted, what advantage your domestic competitor holds, and how the complaint deadlines run for this tender. The corporate side, including a Turkish bidding vehicle, is described on the corporate law page.
What this page does not settle
The performance of the contract under Law No. 4735, including price adjustment, subcontracting and termination; public-private partnership and build-operate-transfer projects under their own statutes; defence procurement; tenders financed by international lenders under their own rules; the State Tender Law No. 2886 that governs sales and leases by the state; and the sector regulations for utilities are separate subjects. The parallel regime for a contractor considering the Adriatic market is on the Montenegro contractor licensing page, and the general protections for a foreign investor in Turkey on the foreign investment guide.
