Be polite, don't make up reasons. Just tell them you regret to inform them that you can't take the position.After careful consideration, I would like to withdraw my application for the job. Learn how to write a letter for declining a job offer that you have already accepted and use our template and example as a guide. Do you want to withdraw your application politely? Get application withdrawal tips and a sample email to withdraw job applications. If you have made up your mind then write a simple letter telling them that you have decided to withdraw your acceptance letter. A letter of withdrawal is what you'd provide to an employer with who you are in the hiring process, but have decided not to move forward working for. A sample letter declining a job offer after accepting it can take many forms, but as a rule you should keep it short, to the point, and completely professional.