[Date]
[Name of concerned],
[Company and Address],
Dear Mr. / Ms. ————–[Name],
I was pleased to receive and examine your proposal of ——–[Dated].
Thank you for your interest in ———– [Nature of proposal, ex. rendering cleaning services at our construction sites].
I regret, however, that we are unable to accept your proposal. Although I have found the services outlined in your proposal to be of high quality, and we are currently under two-year’s contract with ——————– (vendor name) for similar services.] However, after the contract expires, we will be pleased to discuss the possibility of doing business in the future.
Thanks again for your proposal. I do appreciate your time and effort and wish you the best in the future.
Sincerely,
[Name & Signature]
