A memo (short for memorandum) is a brief internal document that tells a group of people about a decision, a change, a problem or a request. Write it with a standard header (TO, FROM, DATE, SUBJECT), state the main point in the first sentence or two, give only the details readers need to act, and close with what happens next. Most memos fit on one page.
Memos still matter because they create a record. When someone asks six months from now why the travel policy changed, the memo is the answer.
When to write a memo
A memo is the right choice when you need to:
- announce a policy or procedure change
- share a decision and the reasons for it
- ask a group to take a specific action by a deadline
- summarize a meeting or a short investigation
- recommend a course of action to a manager
If you're messaging one coworker about something quick, a regular email or chat message is better. If you're presenting long research with data and analysis, you probably need a report.
The standard memo format
Every memo starts with a header block. It replaces the greeting and lets readers decide in seconds whether the memo concerns them.
TO: [Recipients, by name or group]
FROM: [Your Name, Title]
CC: [Anyone copied, optional]
DATE: [Full Date]
SUBJECT: [Specific Topic in a Few Words]
The subject line does a lot of work. "Update" tells readers nothing. "Office closed Friday, Nov. 27, for electrical work" tells them everything they need to decide whether to read on.
After the header, the body usually has three or four parts:
| Part | What it does | Typical length |
|---|---|---|
| Opening | States the purpose or main point | 1–3 sentences |
| Context | Explains why, or gives background | 1 short paragraph |
| Details or action | What readers need to know or do | A paragraph or a list |
| Closing | Next steps, deadline, contact person | 1–2 sentences |
How to write a memo, step by step
1. Decide what you want readers to do or know
Write it down in one sentence before you start. "Everyone must submit expense reports through the new portal starting March 1." If you can't say it in one sentence, the memo will be confusing.
2. Know your audience
A memo to the whole company needs less jargon and more context than a memo to your own team. Ask yourself what the readers already know, what they'll worry about, and what question they'll ask first. Then answer that question early.
3. Lead with the point
Put the main message in the opening line. This is sometimes called "bottom line up front." Busy readers might read only the first paragraph, so make sure that paragraph can stand alone.
Compare these two openings:
- Weak: "As many of you know, over the past several months, the finance team has been reviewing various options for improving our expense process."
- Strong: "Starting March 1, all expense reports must be submitted through the new Ledgerline portal. Paper forms will no longer be accepted."
4. Add only the context readers need
Explain why briefly. People follow changes more willingly when they understand the reason, but they don't need the full history of every meeting that led to it.
5. Make actions easy to find
If readers need to do something, use a numbered list or bold the deadline. Include who to contact with questions.
6. Edit for length and tone
Cut repeated points, filler phrases ("It should be noted that…") and anything that doesn't help the reader act. Keep the tone neutral and professional. If the news is unwelcome, be direct and respectful rather than overly cheerful.
Memo template
TO: [Recipients]
FROM: [Your Name, Title]
DATE: [Date]
SUBJECT: [Specific Subject]
[Opening: one or two sentences stating the main point or decision.]
[Context: a short paragraph explaining why this is happening.]
[Details or required actions:]
- [Action or detail one]
- [Action or detail two]
- [Deadline, if any]
[Closing: who to contact with questions and any next steps.]
Example 1: announcing a change
This example and the company are fictional.
TO: All Harborview Design staff
FROM: Priya Nandakumar, Operations Manager
DATE: October 9, 2026
SUBJECT: New visitor sign-in process starting October 20
Starting Monday, October 20, all visitors to the Harborview office must sign in at the front desk tablet and wear a visitor badge while in the building.
We're making this change after two recent incidents where unregistered visitors entered the studio area. The new process helps us know who is in the building during an emergency.
What you need to do:
- Tell visitors in advance that they'll need to sign in on arrival.
- Meet your visitors at the front desk rather than letting them walk back.
- Collect their badge when they leave and return it to the desk.
If you have questions, contact me at extension 214. Thank you for helping keep the office safe.
Example 2: a recommendation memo
Recommendation memos go up the chain rather than out to a group. They state a recommendation, compare options briefly and ask for a decision.
TO: Marcus Lee, Director of Customer Support
FROM: Ana Ferreira, Support Team Lead
DATE: October 9, 2026
SUBJECT: Recommendation: extend weekend chat hours for a 60-day trial
I recommend extending weekend live-chat hours from 10 a.m.–4 p.m. to 8 a.m.–8 p.m. for a 60-day trial, staffed by two volunteers from the current team on a rotating schedule.
Over the past quarter, our weekend ticket backlog has been the main source of Monday delays, and several customers have mentioned in surveys that they couldn't reach us on Saturdays.
Options considered:
- Keep current hours. No added cost, but the Monday backlog continues.
- Hire a weekend contractor. Covers the gap but needs budget approval and training time.
- Trial with existing volunteers (recommended). Low cost, quick to start, and gives us data before a longer commitment.
If you approve by October 16, we can start the trial on the first weekend of November. I'm happy to walk through the schedule in our next one-on-one.
Common memo mistakes
- Burying the point under paragraphs of background.
- Vague subject lines like "Important" or "FYI."
- Too many topics. One memo, one subject. Send two memos if you have two unrelated announcements.
- Missing deadlines or contacts. Readers shouldn't have to reply just to ask "by when?"
- Wrong tone. Sarcasm, blame or excessive exclamation points don't belong in a document that becomes a record.
Using tools to draft faster
A document generator can produce a first draft from your bullet notes, and a grammar checker catches typos before a memo goes to the whole company. The judgment calls are still yours: what to say first, how much context to give, and how to handle sensitive news. Treat any generated draft as a starting point, check every date and name, and make sure the tone matches how your workplace actually talks.
AI Document GeneratorDraft business documents fastKey takeaways
- Use the TO / FROM / DATE / SUBJECT header and a specific subject line.
- State the main point in the first sentence or two.
- Give just enough context, then list the actions and deadline.
- One topic per memo, one page when possible.
- Close with who to contact, and proofread names and dates.
Next time you have news to share with a group, try writing the subject line and first sentence before anything else. If those two are clear, the rest of the memo usually follows.