Begin your letter by writing your name and address in the top right-hand corner of the page. This will identify you to the recipient and provide them with an address to answer your letter. Your name should be on the first line, your street address on the second line and your suburb / town and your state / territory (all in capital letters) and postcode on the last line.
Then on the top left-hand side of your letter (but below your details) comes the date. Write the day first, then the month and the year. You can write the date in full, or in abbreviated (shortened) form.
Now to add the recipient's details. Directly under the date you need to put the person's name / title (if you know it) and the business or company name on separate lines. You must also include the recipient's address which is set out on separate lines, ie the street or post office box address on one line and the suburb / town and the state / territory (all in capital letters) and postcode on the next line.
Next comes the greeting. Remember to be formal and use the correct title and name. "Dear" is an appropriate greeting for a business letter. If you do not know the name of the person to whom you are writing, you could use "Dear Sir", or "Dear Madam", as appropriate.
Now it is time to start writing the content of your letter. You should start with an introduction to explain why you are writing, followed by the main part of your message, which will contain the detailed information. Finish with a conclusion that summarises the main points made in your letter.
Once you have finished writing what you need to say it is time for you to "sign off" the letter. This is the way you end your letter. "Kind regards" and "Yours sincerely" are appropriate sign offs if you have used the recipient's name. If you have said "Dear Sir" or "Dear Madam", use "Yours faithfully" instead.
Once finished, you need to sign your name. It is also a good idea to write your name in full underneath your signature. Remember that postscripts are not appropriate for business letters.