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. An example of an acceptance letter is: Dear Ms. Anderson,.I'm writing in response to your requested salary upgrade. Struggling to write a counter offer letter? I appreciate the time and effort you have taken to consider my requests and negotiate the offer. A contract acceptance letter is a formal letter that confirms that you have accepted the terms and conditions. Here's what you should know. A counter offer letter template to fill out for best results. Negotiating and writing counter offer letters can feel stressful. Here's a guide to getting the best results while countering a job offer.