Introduction
Bid evaluation criteria in Turkish public procurement law are among the most important issues for bidders, candidates, suppliers, contractors, service providers and foreign companies participating in public tenders in Turkey. A company may submit a commercially attractive offer, but the final tender result depends not only on price. The tender commission must evaluate whether the bid complies with formal requirements, whether the bidder satisfies qualification criteria, whether the tender security is valid, whether the technical offer meets the tender documents, whether there is an arithmetic error, whether the bid is abnormally low, whether domestic bidder or domestic goods advantage applies and whether non-price factors affect the economically most advantageous tender.
Public procurement in Turkey is mainly governed by Public Procurement Law No. 4734. The Public Procurement Authority’s English translation states that the translation is unofficial and not legally binding, so the current Turkish text and secondary legislation should always be checked in practice. However, the translation is useful for understanding the structure of bid evaluation under Articles 36, 37, 38 and 40. The law regulates the opening of tenders, preliminary document control, detailed evaluation, abnormally low bid review and award to the economically most advantageous tender.
Bid evaluation is therefore not a single act. It is a sequence of legal and technical checks. A bidder may pass the price comparison but fail at the document stage. A technically strong bidder may be excluded because of an invalid guarantee letter. A low-priced bidder may lose because its abnormally low bid explanation is insufficient. A higher-priced bidder may still win where the tender documents lawfully include non-price factors or domestic price advantage.
Legal Framework of Bid Evaluation in Turkey
The legal framework for bid evaluation is mainly found in Section IV of Law No. 4734, titled “Evaluation of Tenders.” Article 36 regulates receiving and opening tenders. Article 37 regulates evaluation of tenders. Article 38 regulates abnormally low tenders. Article 40 regulates conclusion and approval of tender proceedings. These provisions should be read together with the tender notice, administrative specification, technical specification, draft contract, implementation regulations, Public Procurement General Communiqué and Public Procurement Board decisions.
The evaluation process is also affected by the basic principles of public procurement. Contracting authorities must conduct tenders according to transparency, competition, equal treatment, reliability, confidentiality, public supervision and efficient use of public resources. These principles affect how evaluation criteria are drafted and applied. A tender commission cannot apply hidden criteria, treat similar bidders differently, ignore mandatory document defects or use discretionary evaluation in a way that undermines equal treatment.
For companies, the practical result is clear: bid evaluation criteria must be reviewed before bid submission. A bidder should know exactly what will be checked, what documents must be submitted, what technical evidence is required, how the price will be compared and whether non-price factors will be applied.
First Stage: Receiving and Opening of Tenders
The first stage of bid evaluation is the receiving and opening of tenders. Under Article 36 of Law No. 4734, tenders are submitted to the contracting authority until the time stated in the tender documents. The tender commission records the number of submitted tenders, opens the envelopes in the presence of tenderers and checks whether the submitted documents are complete and whether the tender letter and preliminary guarantee comply with the required procedures. Tenderers with incomplete documents, improper tender letters or defective tender securities are recorded in the minutes. At this stage, no decision is made on acceptance or rejection, and the documents constituting the tender cannot be corrected or completed.
This stage is sometimes misunderstood. The opening session is not the final evaluation. It is a formal preliminary control and transparency mechanism. The commission records what has been submitted, announces prices and estimated cost, and then closes the session for detailed evaluation.
For bidders, the opening stage is critical because formal defects may later cause exclusion. A missing document, invalid tender letter or non-compliant tender security may be recorded at this stage and may determine the bidder’s fate in the next evaluation phase.
Second Stage: Clarification of Unclear Aspects
Article 37 allows the contracting authority, upon request of the tender commission, to ask bidders to clarify unclear aspects of their tenders in writing for the purpose of examination, evaluation and comparison. However, the law draws a strict boundary: clarification cannot be used to change the tender price or convert a tender that is ineligible under tender documents into an eligible tender.
This distinction is essential. Clarification is not a second chance to submit missing essential documents or repair a fundamentally defective bid. It may be used to clarify unclear information, but it cannot change the substance of the offer. If the bidder failed to submit a mandatory document or submitted a guarantee that does not comply with the tender documents, clarification may not cure the defect unless the issue concerns missing information that does not alter the substance of the bid.
In practice, many disputes arise from the boundary between “missing information” and “missing document.” If the document exists but contains an unclear element, clarification may be possible. If the mandatory document was never submitted, the bid may be excluded. This is why bidders should prepare complete, consistent and clearly readable documents from the beginning.
Exclusion for Missing Documents, Improper Tender Letters and Defective Guarantees
Article 37 provides that, in evaluating tenders, the first step is to exclude tenders of bidders whose documents are incomplete or whose tender letters and tender securities are not compliant as determined during the first session under Article 36. However, if information is missing in submitted documents and the absence of that information does not alter the substance of the tender, the contracting authority may request completion of that missing information within a specified period. If the bidder fails to provide the missing information within the period, the bid is excluded and tender security may be recorded as revenue.
This rule makes document compliance one of the central bid evaluation criteria. A bid may be commercially excellent but legally invalid if essential documents are missing. Typical problems include defective tender security, invalid signature authority, expired certificates, incomplete work experience documents, inconsistent financial statements, missing manufacturer authorization or incomplete electronic participation documents.
For bidders, the safest approach is to create a document matrix before submission. Every required document should be checked for form, content, validity, signature, authority, translation, apostille, notarization and EKAP submission status.
Detailed Evaluation: Qualification Criteria and Tender Document Compliance
After the preliminary exclusion stage, tenders with complete and appropriate documents, valid tender letters and valid preliminary guarantees are subject to detailed evaluation. Article 37 states that tenders are examined for conformity with qualification criteria determining the capacity of tenderers to perform the contract, conformity with the conditions set in tender documents and whether there is an arithmetic error in unit price charts. Tenders that are ineligible or contain arithmetic errors in unit price charts are disqualified.
This detailed evaluation stage is where many substantive disputes arise. The tender commission examines whether the bidder satisfies economic and financial capacity, professional and technical capacity, work experience, technical compliance, product conformity, service capability, construction experience, quality certificates, domestic goods documentation and other requirements.
The key rule is that evaluation must be based on the tender documents. The commission cannot add new criteria after bid submission. It also cannot ignore mandatory requirements stated in the administrative or technical specification. If the tender documents require a specific certificate, the commission must apply that requirement equally. If the tender documents allow equivalent documents, the commission must evaluate equivalence objectively.
Economically Most Advantageous Tender
Article 40 provides that, after evaluation under Articles 37 and 38, the contract is awarded to the bidder submitting the economically most advantageous tender. The economically most advantageous tender may be determined solely on the basis of price or together with price by taking into account non-price factors such as operation and maintenance costs, cost-effectiveness, productivity, quality and technical merit. Where non-price factors are used, they must be expressed in monetary values or relative weights in the tender documents.
This is the central rule of award. In some tenders, the lowest valid price wins. In others, price is only one component of a broader evaluation. Non-price factors may be important in complex goods procurement, software tenders, medical device tenders, maintenance contracts, energy efficiency projects, construction works and service tenders where quality, lifecycle cost or technical merit matters.
However, non-price factors must be transparent. They must be included in the tender documents before bids are submitted. A contracting authority cannot decide after opening bids that it prefers one bidder because of quality, experience or technology unless such criteria were lawfully defined in the tender documents.
Lowest Price Versus Best Value
Turkish public procurement law allows two broad award models: lowest price and economically most advantageous tender based on price plus non-price factors. The appropriate model depends on the procurement subject.
Lowest price may be suitable where the tender subject is standard, technical requirements are clear and all compliant bids offer comparable goods, services or works. For example, certain standard supplies or routine services may be awarded based on the lowest valid price.
Best value evaluation may be more appropriate where quality, lifecycle cost, technical performance, maintenance cost, energy consumption, productivity, operational efficiency or long-term reliability are important. Article 40 expressly allows non-price factors such as operation and maintenance costs, cost-effectiveness, productivity, quality and technical merit, provided that they are monetized or weighted in the tender documents.
For bidders, the evaluation model should shape bidding strategy. In a lowest-price tender, technical documents must show compliance, but price will dominate once minimum criteria are met. In a best-value tender, bidders must prepare technical and financial evidence to score well under non-price criteria.
Non-Price Factors in Bid Evaluation
Non-price factors are powerful but risky. They can improve procurement quality when drafted objectively, but they may also create disputes if vague or subjective.
Lawful non-price factors should be measurable, transparent and linked to the procurement subject. Examples may include energy efficiency, warranty period, maintenance cost, spare part cost, response time, technical performance, service quality, lifecycle cost, delivery time, productivity, environmental impact or operational cost. However, these factors must be stated clearly in the tender documents with monetary values or relative weights.
A non-price factor such as “technical superiority” without a clear scoring method may create legal risk. Similarly, a factor that gives excessive discretion to the tender commission may violate transparency and equal treatment. If the commission can subjectively prefer one product without objective scoring, bidders may challenge the evaluation.
Bidders should review non-price factors before submitting bids. If criteria are unclear, discriminatory or impossible to evaluate objectively, a complaint may need to be filed before the tender deadline.
Domestic Bidder or Domestic Goods Advantage
Article 40 states that where the tender documents provide for a price advantage for domestic tenderers under Article 63, the tender must be concluded by taking that advantage into account when determining the economically most advantageous tender.
Domestic bidder or domestic goods advantage may significantly affect bid ranking. A foreign bidder may offer a lower price, but a domestic bidder or a bidder offering domestic goods may be evaluated more favourably if the tender documents lawfully provide for such advantage. In goods procurement, domestic goods certificates and product eligibility may become decisive.
This is a common source of disputes. A bidder may argue that the advantage was applied to an ineligible bidder, omitted despite being mandatory, calculated incorrectly or stated unclearly in the tender documents. Because domestic preference affects evaluation, it must be transparent and document-based.
Foreign bidders should always check whether domestic advantage applies before pricing. Domestic bidders should verify whether they have the documents necessary to benefit from the advantage.
Tie-Breaking Where Prices Are Equal
Article 40 also addresses the situation where the lowest price is the award criterion and more than one offer has the same tender price and is established as economically most advantageous. In that case, the tender is concluded by determining the economically most advantageous tender based on factors other than price as stated in the second paragraph of Article 40.
This rule matters because equal-price situations can occur in highly competitive tenders or tenders with standard unit prices. The contracting authority must not choose arbitrarily. The relevant non-price factors must be applied according to the tender documents and legal framework.
If the tender documents do not clearly explain how ties will be resolved, disputes may arise. Bidders should examine tie-breaking rules and challenge ambiguity before the tender deadline if necessary.
Abnormally Low Bids as an Evaluation Criterion
Abnormally low bid review is a special evaluation mechanism under Article 38. After evaluation under Article 37, the tender commission determines bids that are abnormally low compared with other bids or the estimated cost. Before rejecting such bids, the commission must request written details from the relevant bidders concerning significant components of the tender within a specified period. The commission evaluates the explanation by considering the economic nature of manufacturing, services or works, selected technical solutions, advantageous conditions and originality of the goods, services or works. Bidders whose explanations are insufficient or who fail to explain are rejected.
This means a very low price is not automatically accepted or rejected. The bidder must be given an opportunity to justify the price. However, the explanation must be concrete and documented. Generic statements about experience or market advantage are usually not enough.
Abnormally low bid evaluation is particularly important in construction works, labour-intensive service procurement, catering tenders, transportation tenders and goods procurement involving import costs or warranty obligations. A bidder submitting an aggressive price should prepare supporting evidence before bid submission.
EKAP and Electronic Bid Evaluation
Electronic procurement has changed bid evaluation in Turkey. The Public Procurement Authority announced that the regulation on conducting public procurements electronically entered into force for tenders announced on or after 1 August 2025. Under this framework, tender commissions are formed on EKAP, procurement files are recorded on EKAP, approximate cost documents are prepared through EKAP, electronic forms are used and tender approval documents, commission decisions, authority approvals and contracts are prepared on EKAP and signed with e-signature.
The same electronic framework affects bid evaluation directly. The Authority announced that, for tenders under the new framework, tax debt, social security premium debt and debarment checks for domestic bidders are made through EKAP at bid opening; final price offers in negotiated procedures and electronic reverse auctions are handled through EKAP; and bid evaluation is limited to the expected first and second economically most advantageous bids where no abnormally low inquiry is made, while in tenders with abnormally low inquiry, all bids below the threshold value are evaluated.
For bidders, EKAP compliance is now part of evaluation readiness. Mandatory fields in participation documents, temporary guarantee sufficiency, e-signature, uploaded documents, tax and social security integrations, electronic notifications and abnormally low bid explanations may all affect whether the bid is evaluated.
Participation Document and Electronic Forms
Under the 2025 electronic procurement framework, the Public Procurement Authority announced that the “participation document” is used instead of the former qualification information table. The Authority also stated that a bid can be submitted only if mandatory fields in the participation document are completed and the temporary guarantee amount is sufficient. Abnormally low bid explanations and pre-contract documents are submitted through EKAP with e-signature.
This makes electronic form accuracy a bid evaluation criterion in practice. If the participation document is incomplete, inconsistent or unsupported, the bid may face evaluation problems. The bidder must ensure that all required fields correspond to the tender documents and that the information can be verified through EKAP or supporting documents.
Companies should not treat EKAP forms as simple administrative screens. They are legally relevant bid components. Internal review should involve legal, technical and financial teams before final electronic submission.
Tax, Social Security and Debarment Checks in Evaluation
The electronic procurement framework makes tax, social security and debarment checks more systematic. The Public Procurement Authority announced that domestic bidders’ finalized tax debt, social security premium debt and debarment records are checked through EKAP at the bid opening stage. For foreign bidders, tax and social security debt checks under their own national legislation are performed at the contract signing stage.
The Authority also announced a 2025 Board decision on tax debt inquiries. Where an EKAP inquiry shows tax debt but the bidder uploaded a verifiable no-tax-debt document obtained within three business days before the bid date, the bidder may be notified through EKAP and given a reasonable period of at least two business days to submit a verifiable document; if the bidder fails to cure the information deficiency, the bid is excluded and tender security may be recorded as revenue.
This area is legally sensitive because a bidder may be excluded not for price or technical failure, but for compliance status. Companies should check tax and social security records before bidding and complete SGK activation where necessary.
Evaluation of Technical Compliance
Technical compliance is one of the most important bid evaluation criteria. The tender commission examines whether the offered goods, services or works satisfy the technical specification. A bidder may be excluded if its product catalogue, technical data sheet, sample, demonstration, service plan, construction method or technical certificate does not prove compliance.
In goods procurement, technical evaluation may involve product catalogues, model numbers, certificates, test reports, warranty documents, manufacturer authorization and samples. In service procurement, it may involve personnel qualifications, service method, equipment, vehicles, software tools and response times. In construction works, it may involve project documents, similar work capacity, technical method, machinery and material compliance.
Technical evaluation must be based on the tender documents. If the specification allows equivalent products, the commission must evaluate equivalence objectively. If the tender documents require a specific certificate, the commission must apply the requirement equally. If the technical specification is restrictive or unclear, bidders should object before the tender deadline.
Evaluation of Work Experience and Qualification Documents
Work experience is a major evaluation criterion in construction, service and complex goods tenders. The tender commission checks whether the bidder’s work experience certificate satisfies the similar work definition, required amount, document type and validity conditions.
Disputes often arise where the contracting authority interprets similar work narrowly, rejects a foreign work experience document, miscalculates the updated value or accepts a competitor’s certificate despite alleged insufficiency. Since work experience is usually a pass/fail criterion, an error may determine the outcome.
Bidders should prepare work experience documents carefully. Foreign documents may require apostille, sworn Turkish translation, supporting contracts, acceptance records and, in some cases, EKAP registration or presentation compliance. If a work experience document is rejected unlawfully, the bidder may file a complaint and appeal.
Arithmetic Errors in Unit Price Charts
Article 37 expressly states that tenders are examined for arithmetic errors in unit price charts and that tenders with arithmetic errors in unit price charts are disqualified.
This rule is strict. A bidder may be excluded because of a mathematical inconsistency between quantities, unit prices and total prices. In unit price tenders, arithmetic accuracy is therefore essential. Internal bid review should include a separate mathematical control before submission.
Bidders should not assume that the contracting authority will correct arithmetic errors in their favour. The law treats arithmetic errors as a disqualification ground. This is especially important in construction works, multi-item goods procurement and service tenders with detailed cost tables.
Evaluation Criteria in Consulting Services
Consulting services have special evaluation rules under Law No. 4734. Although this article focuses on general bid evaluation criteria, consulting tenders often involve quality and technical scoring more heavily than ordinary goods, services or works tenders. The law contains a separate section on consulting services, including prequalification, invitation, evaluation and contract award.
In consulting tenders, criteria may include experience, methodology, personnel, technical approach and financial offer. Bidders should review the special rules and tender documents carefully because the evaluation may not be based mainly on the lowest price.
Reasoned Tender Commission Decision
Article 40 requires the tender commission to reach a justified decision and submit it for approval by the contracting officer. The decision must include the tenderers’ names or commercial titles, offered prices, tender opening date, award decision and grounds, and if the contract is not awarded, the reasons. The contracting officer must approve or cancel the tender decision within a maximum of five days, clearly stating grounds for cancellation if cancelled.
This reasoned decision requirement is important for transparency and remedies. Bidders must understand why they were excluded, why a competitor won, why a bid was found ineligible or why the tender was cancelled. A decision without adequate reasoning may be challenged.
For bidders, the tender commission decision and notification should be reviewed immediately. If the reasoning is incomplete, contradictory or unlawful, complaint deadlines may begin quickly.
Notification of Evaluation Results
Article 41 requires the tender result to be notified to all tenderers who submitted offers within a maximum of three days after approval by the contracting officer. The notification must include reasons for excluding a tender from evaluation or finding it ineligible. If the tender decision is cancelled by the contracting officer, tenderers must be notified together with the reasons. The contract cannot be signed until five days have passed in certain negotiated procurements and ten days in other procurements after notification of all tenderers.
This notification is crucial because it often starts the period for complaints. A bidder should not wait. It should immediately review the notification, tender commission decision, evaluation grounds and EKAP records.
In electronic procurement, notifications through EKAP must be monitored carefully. Missing an EKAP notification may result in losing the right to challenge the evaluation.
Legal Remedies Against Unlawful Bid Evaluation
If a bidder believes that bid evaluation was unlawful, it may use the complaint and appeal mechanisms under Law No. 4734. Candidates, tenderers and potential tenderers who claim that they suffered or may suffer loss of rights due to unlawful procedures may file complaint and appeal applications. These are mandatory administrative remedies before filing a lawsuit.
The first step is generally a complaint before the contracting authority. If the complaint is rejected or not answered, the bidder may file an appeal complaint before the Public Procurement Authority. The Authority may order termination of procurement proceedings where illegality cannot be remedied, determine corrective action where the problem can be corrected, or reject the application on procedural or substantive grounds.
Final decisions of the Public Procurement Authority regarding complaints are subject to judicial review before Turkish courts and such cases have priority.
Common Grounds for Challenging Bid Evaluation
Common grounds for challenging bid evaluation include wrongful exclusion due to alleged missing documents, improper rejection of tender security, incorrect evaluation of work experience, unlawful acceptance of a competitor’s non-compliant bid, failure to apply domestic advantage, incorrect application of non-price factors, defective abnormally low bid assessment, arithmetic error disputes, unequal treatment, EKAP-related errors and insufficient reasoning in the tender commission decision.
A strong complaint should not merely state that the evaluation is unfair. It should identify the specific evaluation error, cite the tender document clause, explain the legal rule and attach supporting evidence.
For example, if a bidder challenges acceptance of a competitor’s technical offer, it should identify the technical requirement and explain why the competitor’s offer cannot satisfy it. If it challenges rejection of its work experience certificate, it should compare the certificate with the similar work definition. If it challenges non-price factor scoring, it should explain why the scoring method was applied contrary to the tender documents.
Practical Checklist for Bidders
Before submitting a bid, companies should review bid evaluation criteria with a structured checklist.
First, identify whether the tender will be awarded on lowest price or price plus non-price factors. Second, review every qualification criterion. Third, prepare all required documents in the correct form. Fourth, verify tender security amount, validity and form. Fifth, prepare technical compliance tables. Sixth, check work experience certificates and updated values. Seventh, review domestic bidder or domestic goods advantage. Eighth, check whether abnormally low bid risk exists. Ninth, verify arithmetic calculations in unit price charts. Tenth, ensure EKAP participation documents and mandatory fields are complete. Eleventh, check tax, social security and debarment status. Twelfth, monitor notifications after bid submission.
This checklist should be completed before final price approval. A bid that is strong commercially but weak legally may never reach the final price comparison.
Practical Checklist After Evaluation Notification
After receiving the tender result, the bidder should act immediately.
First, record the notification date. Second, review reasons for exclusion or non-selection. Third, compare the evaluation with tender documents. Fourth, examine whether the winning bidder appears compliant. Fifth, check whether domestic advantage or non-price factors were applied correctly. Sixth, review whether abnormally low bid rules were followed. Seventh, preserve EKAP records. Eighth, calculate complaint deadlines. Ninth, prepare a focused complaint if there is an evaluation error. Tenth, prepare for appeal before the Public Procurement Authority if the contracting authority rejects the complaint.
Delay is dangerous. Tender complaints are subject to short statutory periods.
Common Mistakes in Bid Evaluation Strategy
The first common mistake is assuming that the lowest price always wins. Under Article 40, the economically most advantageous tender may be determined solely on price or by considering price together with non-price factors.
The second mistake is ignoring formal documents. Document defects may eliminate a bid before price comparison.
The third mistake is treating clarification as a right to repair the bid. Article 37 does not allow clarification to change tender price or make an ineligible bid eligible.
The fourth mistake is submitting an aggressive price without abnormally low bid evidence.
The fifth mistake is failing to monitor EKAP notifications.
The sixth mistake is challenging evaluation with vague allegations rather than specific legal and factual grounds.
The seventh mistake is failing to object to unclear or unlawful non-price factors before the tender deadline.
Special Considerations for Foreign Bidders
Foreign bidders should pay special attention to bid evaluation criteria in Turkey. They may face issues involving foreign work experience certificates, foreign bank guarantees, domestic bidder advantage, domestic goods certificates, translated technical documents, EKAP registration, tax and social security checks at contract signing, and local performance requirements.
Foreign companies should prepare Turkish translations and legalizations early. Technical catalogues, manufacturer authorizations, financial documents and work experience certificates should be consistent with tender document requirements. If a foreign document is rejected, the bidder must act quickly and use complaint mechanisms.
Foreign bidders should also calculate whether domestic price advantage affects competitiveness. In some tenders, a lower foreign bid may still lose because of a lawfully applied domestic advantage.
Why Legal Review Is Important
Bid evaluation in Turkish public procurement is technical and formal. It combines administrative law, procurement law, tender documents, technical specifications, financial rules, EKAP procedures and Public Procurement Authority practice.
A public procurement lawyer can help bidders identify evaluation criteria, assess document sufficiency, review non-price factors, prepare technical compliance tables, evaluate abnormally low bid risk, challenge wrongful exclusion, prepare complaint and appeal petitions and seek judicial review where necessary.
Legal review is especially important in high-value construction tenders, service procurement, goods tenders, medical device tenders, software tenders, foreign bidder participation, joint ventures, abnormally low bid disputes and tenders using non-price scoring.
Frequently Asked Questions
What are bid evaluation criteria in Turkish public procurement?
Bid evaluation criteria are the legal, technical, financial and procedural standards used by the tender commission to determine whether bids are valid and which bidder submitted the economically most advantageous tender.
Does the lowest price always win in Turkish public tenders?
No. Under Article 40 of Law No. 4734, the economically most advantageous tender may be determined solely on price or by considering price together with non-price factors such as operation and maintenance costs, cost-effectiveness, productivity, quality and technical merit.
Can the contracting authority ask for clarification during evaluation?
Yes, but clarification cannot be used to change the tender price or convert an ineligible tender into an eligible one.
What happens if a bid contains arithmetic errors?
Article 37 provides that tenders with arithmetic errors in unit price charts are disqualified.
How are abnormally low bids evaluated?
The tender commission must request written explanations on significant bid components before rejecting an abnormally low bid. Explanations are evaluated based on economic process, technical solutions, advantageous conditions and originality. Insufficient explanations or failure to explain lead to rejection.
Is EKAP relevant to bid evaluation?
Yes. For tenders under the electronic procurement framework, EKAP is used for tender commission formation, procurement files, electronic forms, bid opening checks, tax/social security/debarment inquiries, abnormally low explanations and electronic notifications.
Can unlawful bid evaluation be challenged?
Yes. Bidders may file a complaint before the contracting authority and, if necessary, an appeal complaint before the Public Procurement Authority. Final Authority decisions may be challenged before Turkish courts.
Conclusion
Bid evaluation criteria in Turkish public procurement law determine whether a bidder remains in the tender and whether it can win the contract. The process begins with formal opening and document control under Article 36, continues with evaluation under Article 37, includes abnormally low bid review under Article 38 where necessary, and ends with award to the economically most advantageous tender under Article 40.
The lowest price does not always guarantee success. A bid must first be formally valid, supported by complete documents, accompanied by compliant tender security, technically suitable, consistent with qualification criteria and free from arithmetic errors. If the tender documents include non-price factors, quality, technical merit, cost-effectiveness, operation and maintenance costs or productivity may influence the result. If domestic advantage applies, bid ranking may change. If the bid is abnormally low, the bidder must justify it with evidence.
Electronic procurement through EKAP has made evaluation more digital and more formal. Participation documents, electronic forms, tax and social security checks, temporary guarantee sufficiency, electronic notifications and abnormally low bid explanations now play a central role in many tenders.
For bidders, the best strategy is preparation before submission. Companies should read evaluation criteria carefully, prepare all documents, verify technical compliance, calculate price risks, prepare abnormally low bid evidence and monitor EKAP. After the tender result, any evaluation error should be challenged quickly through complaint, appeal and, where necessary, judicial review.
In Turkish public procurement, winning is not only about offering the best price. It is about satisfying every legal, technical, financial and procedural evaluation criterion in a system where formal compliance and timely legal action are decisive.
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