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Thank You Letter to Client for Successful Completion of Project

On the successful project completion, writing a thank you letter to the client for support is a formal courteous action. Usually, all good companies write formal thank you letters after project completion extending a warm note of appreciation for the assistance offered to them. This has its good impact in the long run in the times when the competition is intense. Future project opportunities are brighter if you exhibit good professional conduct.  Say the client thanks for giving business never hurts.

Given below is a project completion letter format sample. Use this successful project completion letter to thank your business associate using this template which is perfect in every sense.

Format for Thank You Letter on Project Completion


R.K. Sharma
Advent Medicines Ltd.

Date: 11.06.2018


The Manager
Hindustan Marketing Pvt. Ltd.

Dear Sir,

I am writing this letter with extreme pleasure and happiness on successfully completing the project “Health Wellness Kit”. I would like to congratulate all the team members of your organization for their assistance in completing the project on time and with perfection, despite so many challenges that cropped up during this process.

It was an amazing experience for our team members to work with your assistance team. The level of professionalism and dedication that they exhibited while working on the project has helped us reach to our customers across the country. And now we are expecting good sales and expansion of our present customer pool. We are hopeful of healthy returns in the very first quarter of this year which will again be an achievement for us.

The results of this project have also impressed our Chairman and he has announced to hire your company for all such future projects for next two years. We shall send you a formal letter confirming his statement. The Company has announced to host a party to celebrate the successful completion of the project. The details of this event will be shortly shared with you and we would love to have you and your team join us for making this project a success.

I again thank and appreciate your team members for their extreme support and service in completing this project. And we are hopeful that we will set new standards with our upcoming projects in future.

Congratulations on your good work!!!!


R.K. Sharma
Advent Medicines Ltd.

Given Below are a few Thank you Letter sample for a clearer Idea :-

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  • Sid Ali July 15, 2021, 11:23 am

    Thanks, will use these tips in my next project.


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