- Understanding the different types of contracts in business law helps entrepreneurs avoid disputes and protect their interests.
- Written, oral, express, and implied contracts each serve unique purposes depending on how agreements are formed.
- Unilateral and bilateral contracts differ in how obligations are created between parties.
- Executed, executory, and contingent contracts help define when and how contractual obligations are fulfilled.
- Choosing the right contract type reduces business risks and leads to smoother, legally sound transactions.
Entrepreneurs deal with agreements every day—from hiring employees to partnering with suppliers. But while contracts may seem straightforward, the legal structures behind them matter more than many business owners realize. Knowing the different types of business contracts helps you reduce risks, build trust, and avoid costly disputes.
This guide breaks down the main types of contracts in business law, with practical examples to help you apply them in real-life situations. We’ll also touch on why business law is important and how understanding the types of contracts in business law can protect your company.
Understanding the Basics: What Makes a Contract Legally Valid?

Before diving into specific contract types, it’s essential to understand how contracts become legally enforceable. A valid business contract must include key elements such as an offer, acceptance, consideration, mutual agreement, and legality of purpose. Without these, even a professionally drafted document may not stand in court.
Contracts also vary based on how they are created. Some agreements are formal and written, while others can be verbal or implied by actions. This flexibility is helpful for entrepreneurs, but also risky if misunderstandings arise. Whether you are closing your first deal or managing multiple clients, knowing what makes a contract enforceable ensures your business relationships start on solid ground.
The Main Types of Contracts in Business Law
Understanding the types of contracts in business law is essential for entrepreneurs who rely on clear, enforceable agreements to run daily operations. Each contract type serves a different purpose, and using the right one can protect your business from liability, financial losses, and disputes. This section explains the most common contract types you’ll encounter, with examples to guide your decision-making. Whether you’re hiring new team members, securing suppliers, or entering a partnership, knowing these categories ensures you’re using the appropriate legal structure.
Written and Oral Contracts
Written contracts are formal documents signed by both parties, making the terms easy to reference and enforce. For example, a lease agreement or a vendor contract typically falls under this category. Oral contracts, on the other hand, are spoken agreements. They are often used in quick or informal transactions, but can be harder to prove. A verbal promise to pay for a service may be enforceable, but evidence is limited.
Express and Implied Contracts
Express contracts clearly state the terms, either verbally or in writing. An example is a signed employment agreement outlining pay, duties, and working hours. Implied contracts, however, arise from actions or circumstances. For instance, if you visit a salon, it is implied that you will pay for the service provided. Entrepreneurs often use both types without realizing it.
How Do Contract Structures Differ? Understanding Unilateral and Bilateral Agreements
Every business deal involves an exchange of obligations, but not all exchanges work the same way. Unilateral and bilateral contracts outline how commitments are made between parties, and understanding the difference helps entrepreneurs draft clearer agreements. Choosing the right structure ensures that both sides know their responsibilities and what actions trigger contractual obligations. This clarity prevents misunderstandings and helps entrepreneurs manage risks when working with clients, suppliers, or contractors.
Bilateral Contracts
Bilateral contracts are the most common type, involving a mutual exchange of promises. For example, a service contract where the business promises to deliver a service, and the client agrees to pay, is bilateral. Both sides have responsibilities, making it easier to define expectations and performance.
Unilateral Contracts
Unilateral contracts involve one party making a promise in exchange for an action. A good example is a reward contract, such as offering payment for finding a lost item. This contract becomes enforceable only when the action is completed. Entrepreneurs may use unilateral contracts for promotional campaigns or incentive programs.
What About Contract Status? Executed, Executory, and Contingent Agreements

Not all contracts are fulfilled at the same time. Some agreements are completed immediately, while others take time or depend on certain conditions. Understanding these categories helps entrepreneurs track obligations, deadlines, and performance. The more you understand contract status, the better you can manage timelines and avoid delays in business operations. These distinctions also help when reviewing legal documents before signing.
Executed Contracts
An executed contract is one where both parties have fulfilled their obligations. A simple example is a one-time cash purchase of equipment. Once payment is made and the item is delivered, the contract is complete.
Executory Contracts
Executory contracts involve obligations that are still pending. A year-long supply agreement, where monthly deliveries are expected, is an executory contract. Most business agreements fall under this category because performance happens over time.
Contingent Contracts
Contingent contracts rely on certain conditions being met before becoming binding. For example, a partnership agreement that activates only after receiving investor approval is contingent. These contracts help entrepreneurs plan for uncertain situations.
Conclusion
Understanding the main types of contracts in business law gives entrepreneurs a strategic advantage in managing relationships, minimizing risks, and ensuring smooth operations. Whether you’re entering a partnership, hiring talent, or securing suppliers, knowing which contract structure fits your situation helps prevent misunderstandings and strengthens legal protection.
As your business grows, these contract fundamentals become even more essential, guiding you toward smarter decisions and more reliable agreements. With clearer knowledge and the right documentation, you can operate confidently and build a more resilient foundation for long-term success.
