A consent and eligibility letter format deals with the consent regarding an offer of the post made by the company. The person who writes this letter should have the details idea about the companies Act, 2013 and as per the provision, the letter content should be made. In the Consent to Appointment as Auditor and Certificate of Eligibility format an audit firm gives its consent to perform the task of same with the concerned company. The letter should specify the information regarding the audit firm that includes the name of the firm, its constitution as well as the registration number and so on. In short, the detail of the company should be given in the letter. The format should be drafted in a professional way.