
If you need to write and send a formal letter, it’s important to properly format the letter and take into account who the recipient of your correspondence will be. It is also important to understand when to use this type of letter because it can shape the recipient’s perception of you, as well as possibly affect your working relationship in the future. Writing a proper formal letter ensures your words are professional, understandable and well-received by the recipient.
A formal letter follows a fixed structure: sender’s address, recipient’s address, date, salutation, a body of three to four paragraphs, and a formal sign-off. Use “Yours sincerely” if you know the recipient’s name; use “Yours faithfully” if you do not. This guide explains each element in detail, with a complete worked example and a free downloadable template.
How to Write a Formal Letter
Sometimes you need a letter to convey your message in a professional way – whether you are applying for a position, making an important request, or resigning from a role. Getting the format right is key to appearing credible and ensuring your letter achieves its purpose.
Presentation matters. A tidy, structured layout sets a professional tone and shows your attention to detail.
Below are the typical sections of a formal letter. Each section, from greeting to signature, serves a purpose in helping your letter look polished and be easily read. Further details follow the illustration:

To respect your reader’s time, present your points in a logical order and keep the text concise. Each sentence should have a clear purpose.
Avoid contractions and informal words (e.g. use “will not” rather than “won’t”).
How to start a professional letter
Put your address in the top-right corner. This could be your personal address or another address for replies.
Place the recipient’s address on the left, usually below your own. If you are using a windowed envelope, align their address with the envelope window.
Write the date below the recipient’s address. You can place it on either side of the page, but ensure the month is written in words.
If you do not know their name, use “Dear Sir” or “Dear Madam” (or both). If you do know their name, use their title (Mr, Mrs, Ms, Dr, etc.) and their surname. Keep a formal tone.
Pro Tip: Finding out the person’s name wherever possible makes your letter more personal and professional.
a) If you do not know the recipient’s name, use:
Dear Madam,
Dear Sir,
Dear Sir or Madam,
b) If you do know the recipient’s name, use their title (Mr, Mrs, Ms, Dr, etc.) and their surname:
Dear Mr Jenkins,
Dear Ms Hamers,
Dear Mrs Hutchins,
Dear Miss Davis,
Dear Dr Green,
Etc.
In the past, formal letters sometimes included elaborate salutations based on the recipient’s social status, such as ‘Reverend Sir’ or ‘Most Worthy Sir’ for clergymen.
How to write the letter body
Now that you know how to address your recipient, let us focus on structuring your main message for maximum clarity:
- Be concise, and relevant: Stick to the core purpose.
- Avoid informal language: Maintain a formal, respectful tone.
- Aim for three or four paragraphs: Each paragraph should have a clear aim.
First paragraph: Introduce yourself and explain why you are writing (for example, to enquire, request, or complain).
Middle paragraph(s): Provide the essential background or key points. Keep it short, structured, and focused.
Last paragraph: Explain what you expect from the recipient (for example, a reply, a refund, or more information).
How to end your letter
Close the letter based on the greeting:
- Use “Yours sincerely” if you know the recipient’s name.
- Use “Yours faithfully” if you do not.
Sign your name, then print it underneath your signature using capital letters (or type it). If gender might be unclear, add your title in brackets after your name. Optionally, include your telephone number and email.
Reading your finished letter from top to bottom helps catch spelling or grammatical errors. Make sure your recipient can easily understand the main points.
Proofreading is Key! – Before sending, always check for errors. A well-edited letter reflects professionalism and care
Types of Formal Letter
The rules above apply to all formal letters, but each type has its own conventions and expectations. Once you are confident with the basics, use these guides to tackle specific letter types:
- Cover Letter – sent with your CV when applying for an advertised job vacancy
- Letter of Enquiry – a speculative approach to an organisation that has not advertised a vacancy
- Complaint Letter – a formal complaint to a company or organisation
- Resignation Letter – a formal notice of your intention to leave a role
- Reference Letter – written on behalf of someone to support a job or academic application
- Business Letter Format – conventions for professional B2B and B2C correspondence
Source: usingenglish.com













