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What is Commercial Law? Basic Concepts and Principles

Commercial law is a branch of law that regulates the rules regarding commercial transactions and the activities of commercial enterprises. This branch of law aims to ensure the orderly and safe functioning of commercial life. Commercial law deals with commercial relations between individuals and businesses, commercial contracts, commercial litigation and other commercial matters. The rules in this area help make trade more functional and fair.

Commercial law is divided into various sub-branches, each of which specializes in specific topics. The main topics include:

  • Corporate Law: It covers the rules regarding the establishment, management, mergers and dissolution of companies.
  • Corporate Law: It covers the rules regarding the establishment, management, mergers and dissolution of companies.
  • Commercial Enterprise Law: It regulates issues such as the establishment, transfer, partnerships and termination of commercial enterprises.
  • Commercial Contracts Law: It covers the provisions related to the preparation, validity and performance of commercial contracts.

The fundamental principles of commercial law are designed to ensure that commercial life is fair and honest. In particular, the principle of honesty and trustworthiness lends credibility to commercial relations. It is also of great importance for the protection of competition and the healthy functioning of the market economy.

Within commercial law, regulatory bodies and courts play an important role. Commercial courts are the competent authorities for the resolution of commercial disputes and are usually presided over by judges specializing in such cases. Commercial laws, on the other hand, are enacted by legislative bodies and constitute the main sources of commercial law.

In conclusion, commercial law is a comprehensive branch of law established to ensure that commercial activities are carried out in an orderly, safe and fair manner. The rules and principles in this branch of law contribute to the healthy functioning of the economy and trade.

Definition and Scope of Commercial Law

Commercial law is the branch of law that regulates commercial activities, determines the relations that occur in commercial life and the rights and obligations arising within the scope of these relations. Commercial law aims to protect the market order by regulating the economic activities of merchants and commercial organizations in general.

It is possible to analyze the scope of commercial law under the following headings:

  • Commercial Enterprise Law: It regulates the activities of merchants related to their businesses. Merchants' rights, debts and business transfer are handled within this scope.
  • Corporate Law: It regulates the processes of companies such as establishment, management, merger, division and liquidation. Types of partnerships and legal structures of these partnerships are examined.
  • Negotiable Instruments Law: It deals with the issuance and use of commercial documents such as checks, promissory notes and bonds and the legal consequences of these documents.
  • Legal Liability: Determines the legal responsibilities of commercial enterprises and merchants against third parties. Issues such as unfair competition and commercial representation are examined under this heading.
  • Insurance Law: It regulates insurance contracts, types of insurance and the obligations of the insurer. The functioning of insurance companies and the rights of the insured are evaluated within this scope.
  • Maritime Law: It regulates commercial activities carried out by sea. The operation of ships, transportation by sea and related rights and obligations are examined under this heading.

Commercial law also contains special regulations and protection measures in certain areas. For example, it contains special provisions on protecting consumer rights, preventing unfair competition and ensuring confidence in the market.

The Turkish Commercial Code constitutes the main source of commercial law. The Law was established to ensure order in commercial life and to regulate the legal burdens of developing commercial relations. All matters falling within the scope of commercial law are constantly updated and reorganized to adapt to today's economic conditions.

Commercial law also covers international trade law and includes regulations on international trade agreements, foreign investment and foreign trade transactions. In this way, commercial law forms the legal infrastructure of international trade by regulating global trade relations.

History of Commercial Law

Commercial law has emerged with the aim of regulating economic activities and ensuring the legal balance of commercial relations. Developments in this field in the historical process are closely related to the global expansion of trade.

  • Ancient Period: Commercial law laid its foundations in the Ancient Greek and Roman periods. During the Roman Empire, international law called 'Ius Gentium' regulated commercial relations between foreigners.
  • Middle Ages: In the Middle Ages, commercial law gained importance with the development of shipping and trade. During this period, Hanseatic League cities such as Lübeck and Hamburg established commercial law rules and created commercial courts. In terms of maritime law, commercial customary law called 'Lex Mercatoria' emerged.
  • Renaissance Period: With the Renaissance, commercial law developed further. The great merchant cities of Europe were characterized by the rules of commercial law and these laws were partly codified.
  • 17th and 18th Centuries: This period witnessed radical reforms in commercial law. For example, the 'Ordonnance de Commerce' drafted by Colbert in France in 1673 became one of the foundations of modern commercial law. In England, laws such as 'The Bubble Act' and 'Bankruptcy Act' were enacted.
  • 19th and 20th Centuries: Modern commercial law developed with the industrial revolution. In the 19th century, the 'Handelsgesetzbuch' (HGB) in Germany and the 'Code de Commerce' in France came into force. In the 20th century, with the globalization of international trade, international regulations such as 'Incoterms' were put into legal framework with the contributions of the International Chamber of Commerce (ICC).
  • Modern Era: Today, trade law forms the backbone of the global economy. In addition to national laws, global trade rules are set through international organizations such as the United Nations Conference on Trade and Development (UNCTAD) and the World Trade Organization (WTO).

In this process, understanding the historical development of commercial law is important for understanding the structure and practices of modern commercial law.

Basic Concepts in Commercial Law

Commercial law is a branch of law that regulates commercial activities and trade relations. Some basic concepts that have an important place in commercial law are as follows:

1. Commercial Enterprise

A commercial enterprise is an economic unit that has continuity and independence, is profit-oriented and engages in commercial activities. According to the Turkish Commercial Code, the definition and elements of a commercial enterprise are detailed.

2. Trader

A merchant is a person who operates a commercial enterprise. According to the Turkish Commercial Code, merchants are divided into two as real person merchants and legal person merchants.

  • Real Person Merchants: Individuals who operate a commercial enterprise alone.
  • Legal Person Merchants: Refers to businesses, such as collective and joint stock companies, which have legal personality.

3. Trade Registry

The trade registry is a system where official records of commercial enterprises are kept. Registration in the trade registry is mandatory for the commercial activities of merchants and these records are publicly available.

4. Trade Name

A trade name is the name used by a merchant when trading. The trade name enables the commercial enterprise and the merchant to be recognized and must be registered with the trade registry.

5. Commercial Books

Tacirlerin faaliyetlerinin izlenebilmesi ve denetlenebilmesi için tutulan defterlere denir. Muhasebe defterleri, envanter defteri, iş defteri gibi çeşitli ticari defterler vardır. Ticari defter tutma zorunluluğu, muhasebe ve şeffaflık açısından önemlidir.

6. Commercial Contracts

Written or oral agreements made between the parties in commercial relations and regulating the principles of commercial activities are called commercial contracts. There are many types such as sale contracts, lease contracts and purchase and sale contracts.

7. Bankruptcy and Concordat

Bankruptcy refers to the situation where a commercial enterprise becomes unable to pay its debts. Concordat is the process by which the debtor restructures its debts in agreement with its creditors. The Turkish Commercial Code regulates bankruptcy and concordat processes in detail.

8. Unfair Competition

Unfair competition encompasses behaviors that are against the rule of honesty in order to gain a competitive advantage. Unfair competition is regulated by law to protect honest commercial activities and to ensure fairness.

The basic concepts of commercial law are of great importance for the conduct of commercial relations on a healthy and honest basis. These concepts constitute the basic reference points both in practice and in legal processes.

Trade Registry and Registration Systems

Trade registry and registration systems are important components of commercial law. These systems are institutions that officially record and document the legal status, activities and credentials of businesses and traders. In Turkey, trade registry procedures are carried out by trade registry directorates and are carried out under the auspices of the Union of Chambers and Commodity Exchanges of Turkey (TOBB).

Types of Trade Registry Transactions

The main transactions performed in the trade registry are as follows:

  1. Establishment Procedures: These are the first records made when establishing a new business. The required documents vary depending on the type of business (joint stock company, limited liability company, etc.).
  2. Amendment Transactions: Changes such as changing the status of an existing enterprise, capital increase or change of address are recorded in the registry.
  3. Winding Up Transactions: These are the closure transactions carried out in the event that the business ceases to operate or goes bankrupt.

Information in Registration Systems

The accuracy and timeliness of the information contained in the trade registry ensures that commercial affairs are carried out in a transparent, fair and reliable manner. Registration systems contain the following information:

  • Business name and title
  • Center address
  • Amount of capital
  • Board members and representatives
  • Field of activity
  • General assembly resolutions

Electronic Trade Registry Services

In today's digital age, electronic systems are used to facilitate and accelerate trade registry transactions. Through the services offered through e-government, transactions such as document delivery, registration application and notification of changes can be performed online.

Legal Significance and Sanctions

Registration and registration procedures in the trade registry are critical for a business to gain legal existence and legal personality. According to the Commercial Code, unregistered commercial transactions may be deemed invalid. In addition, incomplete or incorrect declarations carry the risk of legal sanctions. Therefore, it is of great importance to declare commercial information and documents accurately, completely and on time.

Trade registry and registration systems are one of the cornerstones of commercial law and ensure trust between businesses. Business owners and managers should constantly check the accuracy and timeliness of the information contained in these systems.

Trade Companies and Types

Under commercial law, trading companies are legal entities established to engage in economic activities. Trading companies are classified into different types according to the Turkish Commercial Code (TCC). Since these companies have legal personality, they conduct their commercial activities in their own name and on their own account. The types and characteristics of trading companies are as follows:

  1. Sole Proprietorships:
    • Collective Company: A collective company is a company in which two or more persons come together to carry out commercial activities and the liability of all partners to the company is unlimited.
    • Limited Company: A limited partnership is a company with two types of partners. Limited partners are unlimitedly liable for company debts. Comanditary partners are liable only up to the capital they have contributed.
  2. Capital Companies:
    • Joint Stock Company (JSC): A joint stock company is a company whose capital is definite and divided into shares and whose shareholders are liable only for the capital shares they have committed. The transfer of shares is free and joint stock companies are generally preferred in enterprises with large capital.
    • Limited Company (LTD): A limited liability company is a company with a definite capital and its partners are liable only up to the capital they put in. The maximum number of partners can be 50 and the transfer of shares is subject to some limitations.
  3. Cooperatives: Cooperatives are legal entities established to meet the common economic, social, and cultural needs of individuals. Cooperative members contribute capital to pursue a shared purpose.
  4. Ordinary Company: An ordinary company is a company that does not have legal personality, but is formed by persons united for a specific business or purpose. In ordinary companies, liability is equally distributed among the partners and they are responsible for their personal assets.

Commercial companies have different management, audit and liability principles according to their types. The selection of the appropriate type of company should be determined according to the sector in which the company will operate, the capital structure and the responsibilities of the shareholders. Commercial law contributes to the safe and orderly functioning of commercial life by regulating the establishment, operation and termination processes of these companies.

Debts and Receivables in Commercial Law

In commercial law, debts and receivables are one of the cornerstones of this law and are of great importance for the sustainability of commercial relations. Commercial debts and receivables regulate the financial relations between merchants and commercial enterprises. Some key points and principles to be considered in this context are summarized below:

Concept of Debt

The financial obligations of merchants and commercial enterprises arising from commercial activities are called debts. In commercial law, debts can be analyzed under the following headings:

  • Money Debts: Debts that traders undertake to pay directly or indirectly in cash.
  • Debt Obligations: These are obligations that require the delivery of specific goods.
  • Service Obligations: Obligations involving the performance of a specific service.
  • Work Obligations: Obligations that require the creation of a specific work.

The Concept of Receivable

Receivables refer to the financial rights that a merchant or commercial enterprise has the right to obtain within the scope of a debt relationship. In commercial law, receivables are evaluated under the following headings:

  • Commercial Papers: Negotiable instruments used in commercial life such as policies, bonds and checks.
  • Current Account: An account in which the parties record their transactions with each other and pay the balance at the end of certain periods.
  • Credit Receivables: Receivables arising from commercial credit transactions.

Debt and Credit Relations

In commercial law, debts and receivables are shaped and managed within the framework of debt-credit relationships. The main principles to be considered in these relationships are as follows:

  1. Honesty Rule: In debt and receivable transactions, the parties must be honest and in good faith.
  2. Equality Principle: It is essential to maintain a fair balance between the parties in debt and receivable transactions.
  3. Full and Complete Performance: The obligation must be fully and completely fulfilled.

Enforcement and Bankruptcy

In the event of non-payment of debts, various legal remedies are available to protect the rights of the creditor:

  • Execution Proceedings: The process by which the creditor seizes the assets of the debtor through legal means.
  • Bankruptcy: When a debtor is unable to pay its debts, it is declared bankrupt by a court decision and its assets are liquidated.

Dispute Resolution

The resolution of disputes arising in debt and receivable relationships is an important part of commercial law. The remedies are as follows:

  • Court Resolution: Resolution of commercial disputes by taking them to court.
  • Mediation: The settlement of a dispute by the parties in consultation with a mediator.
  • Arbitration: The settlement of commercial disputes through private arbitrators.

In commercial law, debts and receivables are critical for the continuity and security of commercial life. For this reason, it is of great importance for the parties to know their rights and obligations correctly and to receive legal support for their commercial transactions.

Contracts and Procedures in Commercial Law

In commercial law, contracts and procedures ensure the effective and fair regulation of commercial relations between the parties. Contracts within this branch of law clearly establish the rights and obligations of the parties. Contracts regulated under commercial law generally contain the following basic elements:

  • Parties: The parties between whom the contract is concluded should be specified.
  • Subject and Purpose: It should be clearly written what the contract is about and what it aims to achieve.
  • Payment Terms: The parties' financial obligations and payment schedules should be detailed.
  • Delivery and Performance: Describe how, when, and where the services or goods will be delivered.
  • Warranty and Compensation: Warranty conditions and compensation in case of dispute must be specified.
  • Duration and Termination: The validity period and termination conditions of the contract should be clarified.

Basic Procedures

There are some basic procedures that must be followed when drafting contracts. These are of great importance for the validity, enforceability and legal force of contracts:

  1. Legal Competence of the Parties: The parties signing the contract must have the ability to enter into a legal commitment.
  2. A Valid Purpose: The subject matter of the contract must not be contrary to law, morality and public order.
  3. Freedom of Consent: The parties must have consented to the contract freely, without coercion or misdirection.
  4. Written form: Certain types of contracts must be made in writing; this documentation serves as evidence in case of future disputes.
  5. Notarization: Some special contracts require notarization. This increases the legal validity of the contract.

Enforcement and Implementation

One of the most common problems encountered during the execution and enforcement of commercial contracts is the failure of the parties to comply with the terms of the contract. In such cases:

"The parties shall follow predetermined legal remedies to resolve disputes. If necessary, they may seek their rights through courts or arbitration institutions."

Moreover, the ability of commercial enterprises to effectively monitor and enforce these contracts is critical to the sustainability of their business operations. Therefore, it is recommended to establish a detailed recording and monitoring mechanism.

In commercial law, contracts and procedures play a vital role in protecting and regulating commercial relationships, and the correct application of this legal framework is essential for continued commercial success.

Unfair Competition and Trade Protection

Unfair competition is an important concept regulated under commercial law. Ensuring a fair and honest competition environment between businesses ensures that commercial activities are carried out in confidence. Unfair competition means that one business engages in behavior that may harm another business, damage its reputation or provide unfair gain. Trade protection is possible by preventing such competition.

Types of Unfair Competition

  • Deceptive Advertising and Misleading Information: Providing misleading or incomplete information about the product or service.
  • Wannabe Creation: Unfairly copying the products, services or methods of trade of another business.
  • Customer and Employee Stealing: Tricking customers or employees of another business into joining one's own business.
  • Slander and False Claims: Making slanderous or unfounded allegations about a competitor.

Effects of Unfair Competition

  1. Effects on Businesses:
    • Loss of income
    • Loss of reputation
    • Increased legal costs
  2. Impacts on Trade:
    • Disruption of commercial order
    • Elimination of fair competition
    • Reduced market security

Trade Protection

Trade protection takes place within the framework of fair competition rules and is secured by various legal regulations. These regulations are as follows:

  • Turkish Commercial Code (TCC): Contains articles on the prevention and regulation of unfair competition.
  • Competition Authority: Operates to ensure competition in markets and prevent unfair competition.
  • Anti-trust Laws: Ensures fair competition in the market by preventing monopolization.

Legal Sanctions

Various legal sanctions are envisaged against unfair competition. These are

  • Right to Sue: Businesses exposed to unfair competition may sue to recover damages.
  • Criminal Measures: Courts may impose administrative penalties on businesses that engage in unfair competition.
  • Temporary Measures: Courts may take provisional measures against acts of unfair competition for the duration of the lawsuit.

Commercial Disputes and Remedies

Commercial disputes are a common occurrence in the business world and their resolution is of paramount importance. Commercial disputes are usually caused by the following reasons:

  • Breaches of Contract: Failure of the parties to comply with the terms of the contract.
  • Unfair Competition: Firms causing damage by violating the rules of competition.
  • Commercial Company Disputes: Disputes between shareholders of a company.
  • Payment Difficulties: Failure of the parties to fulfill their payment obligations.
  • Compensation Claims: Claims for compensation for material or moral damages.

Solution Pathways

1. Negotiation

The most common and cost-effective method is for the parties to try to resolve the problem by agreeing among themselves. Negotiation increases communication and understanding between the parties.

2. Mediation

Mediation is the resolution of problems with the help of a neutral third party. The mediation process is confidential and provides flexibility. Mediators are experts who stand at an equal distance from the parties.

3. Arbitration

Arbitration is a method of resolving disputes by private arbitrators rather than in court. Arbitration is faster and usually less costly than court. Arbitration awards are binding and are often as strong as court judgments.

4. Court

As a last resort, parties can take commercial disputes to court. Court proceedings can be lengthy and costly, but offer legally binding solutions. In court, the case usually goes through the following stages:

  1. Opening of the Case: Submission of the petition.
  2. Preliminary Examination: The court's examination of the case and the evidence.
  3. Trial: The process of hearing the parties and witnesses and evaluating the evidence.
  4. Judgment: The judge's conclusion of the case.

Other Solutions

In some cases, parties may also use alternative methods to resolve disputes. These methods include:

  • Advisory Services: Assistance from legal or business advisors.
  • Expert Opinion Reports: Reports prepared by experts on specific topics.

Tips for a Successful Solution

  • Early Intervention: Seeking solutions before problems grow.
  • Recording Documents: Supporting agreements with written documents.
  • Professional Support: Working with lawyers and counselors.

Constructive and prompt resolution of commercial disputes protects the relationship between the parties and ensures business continuity.

Current Legislation and Regulations in Commercial Law

Commercial law is a branch of law that is frequently renewed and updated due to constantly changing economic conditions and the dynamic nature of commercial relations. Current legislation and regulations ensure that businesses operate within the legal framework.

Featured Legislation

  1. Turkish Commercial Code (TCC):
    • The TCC contains a wide range of regulations from the establishment, operation and termination of commercial enterprises.
    • Transactions such as mergers, spin-offs and acquisitions of companies are also regulated by the TCC.
  2. Law on Protection of Competition:
    • Competition law is regulated to protect free competition.
    • The Competition Authority's powers and duties are specified, competition violations and sanctions are regulated.
  3. Law on Consumer Protection:
    • It aims to protect the consumer.
    • It covers issues such as defective goods and services, warranty conditions and right of withdrawal.

New Regulations

  • Digital Trade Legislation:
    • With the widespread use of digital platforms, innovations have been made in electronic commerce laws.
    • New regulations such as data protection, online payment systems and digital contracts have been introduced.
  • Capital Market Law:
    • It has been updated to ensure the effective functioning of financial markets.
    • The obligations and investor rights of public companies are detailed.

International Trade Legislation

International commercial law consists of norms and rules governing commercial transactions between countries. The most important updated international regulations are the following:

  • Foreign Trade Regimes:
    • It includes tariffs, quotas and import-export regulations.
    • It is determined within the framework of the World Trade Organisation (WTO) and free trade agreements.
  • International Arbitration Law:
    • Organises arbitration processes in the resolution of international commercial disputes.
    • Arbitration rules and protection methods are detailed.

Note: The updates made by the Ministry every two years are intended to ensure the legal security of commercial activities. It is very important to closely follow these changes in order to protect commercial enterprises from legal risks.


Changing legislation and regulations in commercial law aim to ensure that commercial activities at both national and international level are carried out effectively and in accordance with the rules of law.

Basic Concepts

  • Merchant: A person who operates a commercial enterprise partially or wholly on his own behalf.
  • Commercial Enterprise: An enterprise that operates continuously and independently to generate income.
  • Trade Name: The name used by the merchant in its commercial activities.
  • Business Pledge: A type of pledge established on a commercial enterprise.
  • Current Account: This is the account in which mutual debts and credits between merchants are periodically recorded.
  • Unfair Competition: It is the behavior of one person to harm another person by acting against the rules of competition.

Basic Principles

  1. Principle of Honesty: The principle of honesty is essential in all areas of commercial law.
  2. Good Faith Principle: Parties are expected to act in good faith in their commercial relations.
  3. Transparency Principle: Openness and transparency are taken into consideration in commercial transactions.
  4. Principle of Equality: Laws and regulations apply equally to all.
  5. Principle of Foreseeability: Commercial law aims to create a predictable and reliable legal order.

Commercial Law in Practice

The practice of commercial law requires the rigorous application of laws and commercial rules. Legal knowledge and expertise play a major role, especially in drafting contracts and resolving commercial disputes.

  • Drafting Contracts: It is important that the rights and obligations of the parties are clearly stated.
  • Dispute Resolution: Disputes are resolved using commercial courts or alternative dispute resolution methods.

Commercial law contributes to the protection of economic order by securing commercial activities. Mastery of commercial law plays a critical role in minimizing legal risks for individuals and businesses. Therefore, knowing and applying the basic concepts and principles of commercial law directly affects commercial success.