How should dates be formatted in letters to avoid confusion?
Use Month Day, Year with a comma in American English and Day Month Year without a comma in British English; spell out the month for clarity. Place the date at the top in formal letters and keep the same format throughout.
Dating a letter might seems like a small detail, but getting it right can make a big difference.
Whether you're drafting a formal business letter, sending a job application, or writing a personal note, properly formatting the date ensures clarity and professionalism.
Different countries follow different date formats, and a simple mistake can lead to confusion or even misinterpretation.
This guide will walk you through 4 simple rules to help you format dates correctly in any type of letter, ensuring your communication is polished, professional, and universally understood.
1. Stick to the Standard Format for Formal Letters
For business and professional letters, always use the Month-Day-Year format (U.S.) or Day-Month-Year format (U.K.).
- U.S. Format (American English): March 12, 2025
- U.K. Format (British English): 12 March 2025
Example: If you’re applying for a job in the U.S., writing “March 12, 2025” is preferred over “12/03/2025,” which could be misinterpreted as December 3rd.
Pro Tip: If writing to an international audience, spell out the month completely to avoid confusion.
Also Read: What are some good cover letter examples?
2. Use the Right Punctuation (Or None at All)
Even punctuation rules for writing dates in letters vary depending on the format and region.
A small misplaced comma, or the absence of one, can change the tone of your letter or make it seem grammatically incorrect.
1. American English: Use a Comma
In the Month-Day-Year format (used in the U.S.), a comma is placed between the day and the year:
✅ Correct: March 12, 2025
❌ Incorrect: March 12 2025
Additionally, if the date appears within a sentence, you must add a second comma after the year:
✅ Correct: "Our meeting on March 12, 2025, was very productive."
❌ Incorrect: "Our meeting on March 12, 2025 was very productive."
2. British English: No Comma Needed
In the Day-Month-Year format (used in the U.K. and many other countries), no comma is required:
✅ Correct: 12 March 2025
❌ Incorrect: 12 March, 2025
Since the format already follows a logical progression from smallest to largest (day → month → year), the comma isn’t necessary for clarity.

3. Where to Place the Date in a Letter
The placement of the date depends on the type of letter you’re writing.
- Formal Business Letter: The date goes at the top, aligned to the left or right, depending on your preferred style. Here's an example:
John Doe
123 Main Street
New York, NY 10001
March 12, 2025 - Personal Letter: You can place the date at the top left, top right, or even at the end after your signature.
Also Read: How to ask for a letter of recommendation?
4. Keep Date Formatting Consistent Throughout the Letter
One of the biggest mistakes people make is switching between different date formats within the same letter.
If you start with "March 12, 2025," don't suddenly write "12/03/2025" elsewhere.
✅ Good Example:
- "I’m available for an interview on March 12, 2025 or March 14, 2025."
❌ Bad Example:
- "I’m available for an interview on March 12, 2025 or 14/03/2025."
Also Read: How to write a job application letter?
Conclusion
A small detail like the correct date format can make a big difference - whether you’re sending a job application, writing to a professor, or corresponding with a potential business partner.
At Hiration, we understand that small details matter in professional communication.
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Frequently Asked Questions
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What date format should you use in formal letters?
Use the Month-Day-Year format in the U.S. or the Day-Month-Year format in the U.K. Example dates: March 12, 2025 and 12 March 2025.
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How should you punctuate dates in American English letters?
Place a comma between the day and the year, and add a second comma after the year when the date appears in a sentence.
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Do you use a comma in British English dates?
You do not use a comma. In the Day-Month-Year format, no comma is required.
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Where do you place the date in a formal business letter?
Put the date at the top, aligned to the left or right, depending on your preferred style.
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Where can you place the date in a personal letter?
Place it at the top left, top right, or at the end after your signature.
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Should you spell out the month for international readers?
Spell out the month completely to avoid confusion.
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How do you avoid misinterpretation with numeric dates like 12/03/2025?
Prefer writing “March 12, 2025” in U.S. contexts; “12/03/2025” could be misinterpreted as December 3rd.
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How do you keep date formatting consistent in a letter?
Use one format throughout. If you start with “March 12, 2025,” don’t write “12/03/2025” elsewhere.
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What common date-writing mistakes should you avoid in letters?
Avoid switching formats within the same letter and omitting the comma in American dates.