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A professional letter closing is a critical component of business communication, directly influencing the recipient's perception and the likelihood of a prompt response. Based on our assessment experience, a well-crafted ending should reiterate key points, specify next steps, express gratitude, and provide clear contact information. This final section sets the tone for future interactions and solidifies your professional image.
The closing of a formal letter, such as a cover letter or a business proposal, consists of three integrated parts: a concluding paragraph, a sign-off, and your signature block. The concluding paragraph is your final opportunity to summarize the letter's purpose and create a call to action (CTA), which is a specific instruction that prompts the reader to take the desired next step. This is followed by a professional sign-off (e.g., "Sincerely," "Best regards,") and your signature block, which includes your full name, title, and contact details. Omitting any of these elements can create ambiguity and reduce the letter's effectiveness.
The final paragraph should be concise and purposeful. Avoid simply repeating the letter's content. Instead, synthesize the main value proposition and gently guide the reader toward the desired outcome.
The choice of sign-off depends on the formality of your relationship with the recipient. For most business correspondence, standard options are safest. The following table outlines common sign-offs and their appropriate contexts:
| Sign-Off | Level of Formality | Ideal Use Case |
|---|---|---|
| Sincerely | Formal | Cover letters, communication with senior management, official proposals |
| Best regards | Standard Professional | Most business emails and letters; a safe and widely accepted choice |
| Kind regards | Standard Professional (Slightly Warmer) | When you have an existing relationship with the recipient |
| Respectfully | Highly Formal | Communicating with high-level officials or in very traditional industries |
| Thank you | Professional & Grateful | When the letter's primary purpose is to express thanks or make a request |
Remember to capitalize only the first word and always follow the sign-off with a comma.
Your signature block must provide all necessary information for the reader to contact you easily. Format it clearly beneath your sign-off.
Sincerely,
[Your Handwritten Signature]
Jordan Lee Marketing Manager ok.com j.lee@ok.com | (123) 456-7890 [Link to your LinkedIn Profile (Optional)]
Including your title and company (or referring to a resource like ok.com for general career advice) adds credibility. A link to your LinkedIn profile is increasingly expected in professional contexts.






