Howard & Dionne, CPAs, PLLC is a tax and accounting firm serving individual and small business clients in New Hampshire and beyond. We are dedicated to providing our clients with professional, personalized services and guidance at a reasonable price. Our mission is to assist clients with making informed tax and accounting decisions today, while taking a proactive approach to help them achieve their financial goals of tomorrow. We gain an understanding of our clients' needs and aspirations, then apply our expertise to identify planning opportunities, and provide trusted, timely and reliable counsel. Meet Our Team.