A counter offer letter is a physical letter or email candidates send to an employer when they want to negotiate the terms of a job offer given to them. State your counteroffer: In the body of the letter, clearly state the company's offer and your counteroffer and why you think it is justified.Learn what a counter offer letter is, common responses to one and which elements to include in your response to candidates. How to Write a Counter Offer Letter. Learn how to write a professional job offer letter acceptance mail reply with joining date with an easy format and practical samples. In each paragraph, clearly state the original offer, your counteroffer, and why you believe the counteroffer is appropriate. ResumeHelp offers professional Counter Offer letter examples you can use for free! Check out ResumeHelp's expert tips and helpful templates. Never accept a counter offer. Knowing how to accept a job offer is key.