Difference between Formal and Informal Letter
| Formal Letter | Informal Letter |
| Has a prescribed format | Does not have a prescribed format |
| Written for professional communication | Written for personal communication |
| Contractions are not used | Contractions are used |
| Abbreviations can’t be used. | Abbreviations can be used. |
| Written to businesses, colleges, universities, government institutes, employers, organizations, etc. | Written to family members, friends, other close acquaintances, etc. |
| Written in first person and third person. | Written in the first, second, and third person. |
| Sentences are long and complex. | Sentences are short and simple. |
| Concise Size | Large or concise |
| Formal tone | Casual and emotional Tone |
| No use of Exclamatory sentences | Exclamatory sentences can be used |
| Written in Active Voice | Written in Passive Voice |
Sample Informal Letter
Write a letter to your friend to wish him his birthday.
139-B Rana Town
Lahore, Pakistan
21st June 2022
Dear Aleena,
I can’t believe that my best friend is going to be 30 years old tomorrow. Although you don’t look that young, still aging is here and now you are going to enter another phase of your life.
I want to say that you have been a great support in my life and you helped me out in every difficult time of my life. Without your continuous support, it was impossible for me to reach the place where I am today. Let’s not be so serious and talk about the birthday party that I am excited about. I wish you a happy birthday and all our friends have decided to arrange a party for your birthday. It is in Shazia’s home and I know that it is near your house so there is no need to travel much.
Another important point is that it is a themed birthday bash and as per the theme, everyone is wearing a red dress while the birthday person will wear a black dress. I am sending you a black dress along with this letter. I have attached the invitation card with the information about venue and time of the party.
Just wear the black dress and reach the venue at the given time. We will be waiting for your arrival and yes! Don’t worry as all the dishes decided for the party are according to your taste and preference. After all, I have been your friend for a long time and know you better.
Well! Fun apart! Many happy returns of the day! I hope you achieve all your dreams this year and your life fills with happiness.
Yours Lovingly,
Amina Tahir
(Signature)
