What is Assumpsit?

In Latin, the term assumpsit means "he has undertaken". 'It is used in common law to define an action to recover damages resulting from a breach of contract. This action covers many types of agreements -  although it was initially developed in the 14th century as a form of recovery for the negligent performance of an undertaking.

How Does Assumpsit Work?

A contract is an agreement between two parties where one party promises to do some act or pay something to the other. It may be in an oral form or writing, but it's not under seal. It is considered express if the promisor puts his promise in a distinct and definite language. It's deemed to be implied in the case where the law infers a commitment from the conduct of the party or the circumstance of the situation although a formal promise was not made. 

In practice, an assumpsit is a form of action for the recovery of damages for the non-performance a simple contract (which is of neither recorded nor made under seal). This action is divided into two:

• Common or indebitatus assumpsit. Arises with an implied promise.
• Special assumpsit. This is founded on an express promise.

The action of assumpsit is different from trespass and trover because they are founded on tort and not on a contract. It is also different from covenant and debt because they are appropriate where the ground of recovery is a sealed instrument or a special obligation of paying a fixed sum. It is different from replevin which seeks the recovery of specific property instead of damages.

Related Topics

• Contract Law (Intro)

• What is a Contract?
• Contract Theory Definition
• Meeting of the Minds
• Doctrine of Utmost Good Faith 
• Aleatory Contract Definition
• What are the sources of contract law?
• Restatement of Contracts
• Uniform Commercial Code
• Convention on Contracts for the International Sale of Goods (CISG) 

• What is a Unilateral Contract vs a Bilateral Contract?
• What is an Express Contract vs an Implied Contract?
• What are the requirements to form a Contract (Offer, Acceptance, Consideration)?
• What is an Enforceable Contract vs. a Valid Contract?
• What is a Void Contract vs a Voidable Contract?
• Adhesion Contract 
• What is Mental Capacity to contract?
• What is the requirement of a Lawful Purpose?
• What are common types of Voidable Contract?

• What is an Offer?
• Sum Certain (Contracts) Definition

• When does an offer to contact terminate?
• Counterparty Definition
• Mirror Image Rule?
• Rule for Sale of Goods
• Silence is Not Acceptance?
• Mailbox Rule
• Shrink-wrap Agreement Definition
• Click-Wrap Agreement Definition
• What is Consideration?
• What is Promissory Estoppel?
• When is a contract required to be in writing Statute of Frauds?
• What type of writing satisfies the statute of frauds?
• Exceptions to the Statute of Fraud
• Documents Under Seal
• Who Can Sign Contracts on Behalf of a Company?
• E-Sign Act
• Privity of Contract
• Who are third-party beneficiaries to a contract?
• What is assignment and delegation of a contract?

• When is a party's Duty of performance?
• Aleatory Contract
• What is an Executed contract vs an Executory contract?
• Inchoate Definition
• Evergreen Contract

• What is Performance, Substantial Performance, and Breach of a contract?
• What is performance of a Divisible Contract?
• When is a party's duty of performance discharged?
• What are conditions to Contract (Precedent & Subsequent)?
• Abandonment Option (Contract) Definition
• Cooling Off Rule Definition
• What is tender performance of a contract?
• What are Impossibility and Impracticability
• What is a Frustration of Purpose?
• Waiver or Release from Contract
• Accord and Satisfaction
• Force Majeure Clause
• Novation
• What is a Breach of Contract?
• Repudiation (Contract) Definition
• Anticipatory Repudiation
• Acceleration Clause (Contracts) Definition
• What methods exist for resolving a breach?
• Assumpsit
• What remedies exist for a breach of contract?
• Rescission (Contract)
• Exculpatory Clause
• Hold Harmless Clause
• What is Efficient Breach?
• Organization of a Contract
• How to Read the Contract
• Boilerplate
• Contract Representations & Warranties
• Contract Covenants
• What rules does a court follow in interpreting a contract?
• Addendum 
• Allonge Definition
• What is the Parol Evidence Rule?
• What is a complete integration vs a partial integration?
• Exceptions to the Parol Evidence Rule
• Patent and Latent Ambiguity in a Contract
• Service Level Agreement Definition 
• Offtake Agreement