Over 75 Years of Trusted Accounting in Mississippi M.M. Winkler & Associates is an accounting, tax and consulting firm that helps dynamic companies and people achieve their dreams. We have offices in Tupelo and Pontotoc which enables us to service the Northeast Mississippi area. The accountants of M.M. Winkler and Associates have extensive experience in all facets of business, governmental and not-for-profit entities and tax matters. Since our firm’s inception in 1935, we have remained responsive to the needs of our clients and been dedicated to creating an environment of open communication, honesty, compassion and respect, as well as actively participating in the community.