Difference Between Memo and Letter

Despite being quite similar terms, there is a lot of difference between the memo and letter. There is a lot of misconception among the people that they both are the same as they both letter and memo perform the same function.

But it is clear and confirmed now that they both are different from each other.

Memo vs Letter

The difference between memo and letter is that the memo is an informal way to communicate between people, but through the letter, communication becomes easy in both a formal and informal way.

Memo vs Letter

A memo or memorandum is a message that people generally use in a business office. The memo is typically useful in internal business communication. It practically gives answers and information.

It is a long-written message from one department to another department of the firm or company.

A letter is a mode of communication that conveys a written message from one person to another.

It is communication that stores information, and this can be in both forms, formally and informally. A person writes them to give information, conveys messages to another person, or reports about another person’s situation.


Comparison Table

Parameter of ComparisonMemoLetter
MeaningA memo is generally a business message used for business purposes to communicate between one department to another or one firm to another.A letter is a communication mode whose purpose is to convey messages or information or explain situations from one to another.
LengthyA memo is generally a short message that usually conveys from one person to another.The letter is a short or long message that conveys from one person to another.
Nature of CommunicationA memo is an informal way of communicating with people.It can be done in both a formal and informal way.
InterchangeThe memo is interchanged between colleagues in the organization.The letter is interchanged between the clients of the business or between the friends or from employee to head management of the organization.
RelevantThe memo is to the point as it is a very small message to communicate.The letter is not that relevant as compared to the memo.
SignatureThe memo does not require a signature at the end of the message.The letter requires a signature at the end of the message.
Writing ContentIt used more technical terms in a message to communicate.It used straightforward terms to communicate.


What is Memo?

A memo or memorandum is a written mode of communication that is useful business or office.

Memo used the format of notes, reports, letters, or binders to communicate between the colleagues.

It typically comes in use for internal communication in a firm. The memo is written from one person to all other person perspectives like delivering a message to an audience; it is not one to one communication.

A memo can inform the group member about the company event, provide information about the given project to the team, or inform the employee about the company’s action.

Memo’s purpose is to provide information about the event in the company or call for its action.

It follows the format of the clear header, which indicates who sent the receipt, titles given by the individual, date, and subject are also present and then the message or information by the individual, discussion about the topic, and at last, the summary.

It typically follows the writing format of introduction, a body, and a conclusion. In contrast, all these are present in the memo and provide a clear purpose.

The heading gives the main topic, and then the discussion is done about the topic and lasts the conclusion.

It is generally the announcement which a person speaks on behalf of the organization.

It may contain an announcement or feedback or a legal document that can reflect the organization’s policies or procedures and may mention the employee’s existing or new policy.


What is Letter?

The letter is a written mode of communication that is handwritten or printed on a white sheet. It can be sent through mail or post by letter; it is a one-to-one conversation between the parties.

In today’s time, emails and texts, and other communication methods have become the norms, while letters’ writing has become old fashion. Till now, a formal kind of communication is done via letters.

At the same time, the important mode of communication is done through letters, just like a cover letter for a job or the reminder sending from the bank or acceptance letter from the college. 

Two main types of letter writing are formal letter writing and informal letter writing. The other letter-writing types are business letters, official letters, social letters, circular letters, and employment letters.

It occurs in formats and forms, adding notes, letters, and postcards. The letter is commonly written between friend, family, and lover, which is known as informal letter writing, and the letter exchange between clients is known as formal letter writing.


Main Differences Between Memo and Letter

  1. Both letter and memo are a non-verbal mode of communication that is express through writing.
  2. The memo is the informal nature of communication used for internal conversation in business. On the other hand, letters are formal and informal in communication, which helps exchange words from clients or send a message to friends.
  3. A memo written by a person is more in point, as the message is very short while the letters are longer than the memo.
  4. It is not one to one communication, while the letters are one to one interpersonal communication as it is private.
  5. No signature is required by writing the memo while the signature is required by writing a letter.
  6. Memo uses technical terms in writing content, while letter uses simple terms while writing content.
Difference Between Memo and Letter


  1. https://journals.sagepub.com/doi/abs/10.1177/0893318989002004003
  2. https://www.jstor.org/stable/20189278
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