Cornerstone CPA Group, LLP, a merger of Burnham and Beyler, CPAs and McCuistion & Poe, CPAs is a firm in Elkhart, Indiana that provides tax, for profit and non-profit audit, and other accounting and management advisory services. We hope this website will be a useful place for you to find information, articles, and financial tools that will help you better your business or personal finances. If you are new to Cornerstone or seeking more information about us, we hope this site will show you why we stand out as certified public accountants in our area as a quality CPA firm that provides a great value for both our business and individual clients.