How to Write a Memorandum (Format, Template & Examples)
A memorandum — commonly called a memo — is a short formal document used for internal business communication. It delivers a specific message to a defined audience: a policy change, a project update, a decision request, or a post-meeting action list. This guide explains how to write a memorandum step by step, with the standard format, a copy-ready template, and three worked examples.
If you need to capture a live discussion rather than send a directive, see our guide on how to write meeting minutes instead.
What is a memorandum?
A memorandum is a formal written notice sent within an organization. Companies use memos when they need a clear written record — a policy change, a regulatory update, a project directive, or a decision that everyone in a department needs to acknowledge.
Two distinctions matter most:
- Memo vs. letter — a memo is internal (colleagues, teams, departments); a letter is external (clients, vendors, regulators).
- Memo vs. email — a memo creates a formal record and carries more authority; email is faster but informal. Use a memo when the message needs to be documented and preserved.
Memorandum format
The standard memorandum format has two parts: a header block and a body.
Header block — four labeled lines, each on its own line:
- TO: recipient name(s) or department
- FROM: your full name and title
- DATE: written out (September 15, 2026)
- SUBJECT: specific and action-oriented — not “Update,” but “Q3 Budget Approval Needed by October 1”
Body — four sections in order:
- Opening — one sentence stating why you are writing
- Context — relevant background, kept short
- Action items — what you need the reader to do, by when, and who is responsible
- Closing — next steps and how to reach you with questions
How to write a memorandum
Step 1: Write the header
Fill in each of the four header fields. The SUBJECT line does the most work — make it specific enough that the reader knows the topic and urgency before reading a word of the body.
Step 2: State the purpose in the first sentence
Open the body with one sentence that says exactly why you are writing. The reader should understand the memo’s point without reading further. Weak: “I am writing to inform you of some changes.” Strong: “Effective October 1, the company’s remote-work policy changes to require two in-office days per week.”
Step 3: Provide context and background
Give one to two short paragraphs of relevant background — only what the reader needs to understand the action you’re asking for. Skip anything they already know.
Step 4: State the action items and deadlines
Use a bulleted list for action items. For each item, state the action, the responsible party, and the deadline:
- HR Department — update the employee handbook by September 30
- All managers — brief their teams in the weekly stand-up before October 1
- IT — enable the new building-access system by September 28
Step 5: Write the closing
One or two sentences thanking the reader and stating the next step. Include your contact information or say how to reach you with questions.
Step 6: Note any attachments
If the memo references a supporting document, add an attachment line at the bottom:
Attachment: Remote Work Policy — Updated September 2026
Memorandum template
Copy this memorandum template and fill in each field:
MEMORANDUM
TO: [Recipient name(s) or department] FROM: [Your name, Title] DATE: [Date] SUBJECT: [Specific, action-oriented subject line]
Purpose [One sentence stating why you are writing.]
Background [1–2 short paragraphs of relevant context.]
Action items
- [Action] — [Responsible party] — [Deadline]
- [Action] — [Responsible party] — [Deadline]
Next steps [Closing sentence(s). State the next step and how to reach you with questions.]
Attachment: [Document name, if applicable]
Memorandum examples
Example 1: Policy change memo
MEMORANDUM
TO: All Staff FROM: Jane Reeves, Head of People Operations DATE: September 15, 2026 SUBJECT: Remote Work Policy Change Effective October 1
Effective October 1, 2026, the company’s remote-work policy changes to require two in-office days per week for all full-time employees.
After reviewing engagement and collaboration data from the past two quarters, leadership determined that a structured in-office presence improves team communication and onboarding support for new hires.
Action items:
- All managers — brief teams on the updated schedule before October 1
- HR — distribute the updated policy handbook by September 22
- Employees — select your two in-office days in the scheduling tool by September 29
Questions? Contact People Operations at people@company.com or stop by the HR suite on the third floor.
Attachment: Remote Work Policy — Updated September 2026
Example 2: Project update memo
MEMORANDUM
TO: Product Leadership Team FROM: Marcus Dolan, Project Manager DATE: September 15, 2026 SUBJECT: Mobile App Launch — Status Update and Risk Flag
The mobile app launch is on track for October 15, with one risk that requires your input by September 20.
Development is 92% complete. QA testing finishes September 22. App store submission is scheduled for October 1, leaving two weeks of buffer before launch. However, the payment integration vendor has flagged a potential delay in their API certification — this may push submission to October 5.
Action items:
- Product Leadership — decide by September 20 whether to accept the two-week slip risk or source a backup vendor
- Marcus Dolan — present vendor options at the September 18 leadership sync
- Engineering — complete the remaining 8% of development by September 19
I will circulate a decision summary after the September 18 meeting. Reach me at m.dolan@company.com for questions before then.
Example 3: Meeting follow-up memo
MEMORANDUM
TO: Q4 Planning Committee FROM: Priya Shah, Strategy Director DATE: September 15, 2026 SUBJECT: Action Items from the September 14 Q4 Planning Session
Below are the action items agreed upon in yesterday’s Q4 planning session.
The committee reached consensus on three priorities: expanding the enterprise sales motion, accelerating the partner channel, and freezing discretionary spend in Q4 to protect the year-end margin.
Action items:
- Sales — present the enterprise outreach plan at the October 1 all-hands
- Partnerships — finalize two new partner agreements by October 15
- Finance — circulate the Q4 budget freeze guidelines by September 22
- All leads — confirm capacity to execute by September 19 via the shared tracker
The next committee meeting is October 6. Add agenda items in the shared doc by September 30.
How long should a memorandum be?
A standard business memo is one page or less — roughly 300–500 words for most purposes. If the background or supporting data runs longer, move it to an attachment and keep the memo body focused on the action items. A memo that runs to two pages usually means it should be a report instead.
Common mistakes to avoid
- Vague subject line — “Update” or “FYI” tells the reader nothing. Write the action or decision in the subject.
- Burying the action item — state what you need in the first or second paragraph, not buried after three paragraphs of background.
- Over-distributing — copy only people who need to act or be informed. A memo sent to everyone loses urgency fast.
- Using a memo when email is fine — memos create formal records. For a quick status note or a question, email is the right tool.
A faster way to draft your memo
If you are working from meeting notes, a long email thread, or a briefing document, paste the text into our free AI text summarizer to extract the key points and action items in seconds. Then structure those points into the template above. It cuts the first-draft time without skipping the thinking you need to do.
Frequently asked questions
What is a memorandum? A memorandum is a short formal document used for internal business communication — to announce a policy change, share a project update, or capture action items for a specific audience.
What is the format of a memorandum? The standard memorandum format has a header block (TO, FROM, DATE, SUBJECT) followed by a body with an opening, context, action items, and a closing. Attach supporting documents rather than embedding them in the body.
How long should a memorandum be? Aim for one page — 300–500 words. Move detailed data to an attachment and keep the memo itself focused on the core message and actions.
What is the difference between a memo and a letter? A memo is internal — sent within an organization. A letter is external — sent to clients, vendors, or other outside parties.
When should I use a memo instead of an email? Use a memo when you need a formal, documented record — a policy change, a compliance directive, or a significant decision. For routine questions and quick updates, email is faster and appropriate.