BT Pierian is a joint venture between advisory CPA firm Baker Tilly US and India-based Pierian Services. The joint venture consists of two legal entities, one that provides assurance and advisory services, and another that is focused on managed services, including tax, client accounting and consulting. Pierian Services has been serving multinational firms for more than 20 years in managed accounting services. Pierian Services adds to Baker Tilly's complementary workforce made up of insourced and outsourced resources, creating a pool of incredibly skilled professionals from around the world. The joint venture currently employs more than 200 professionals working across Pierian offices throughout India, including in Bangalore, Gurugram, Jaipur, Chandigarh, Shivamogga and Chennai. The professionals joined the Baker Tilly US teams in 2023 to tackle tax, assurance and client accounting work as well as other organizational projects.