I don't think it's helpful at all, but it will increase your knowledge at most. The selection of doctoral examination focuses on research. What CPA does not value is your research ability. Doctors or professors have high academic requirements and have research in a certain field. And CPA is to cultivate the comprehensive ability of accounting, focusing on application. If you want to get a doctorate, the best way is to publish more papers. Every high-quality paper takes a long time to write, and papers and periodicals are graded. Internationally, it is divided into 1 star, 2-star and 3-star. Generally speaking, if you can send 2-star articles, it should be very advantageous to study for a doctorate, but it is not easy to send them.
The CPA exam is time-consuming. If you decide to study for a doctorate, you'd better not take the CPA exam, because doctoral graduation is basically doing research, entering a university, or entering some policy banks. These are professional and profound requirements.
If you want to enter the enterprise in actual combat, it is recommended not to study for a doctorate, because the shortest time for studying for a doctorate is 3 years. It takes a lot of time, and it's one thing to study for a doctorate, another to graduate, and it's another to become a professional even after graduation. If you don't have super IQ and super psychological ability, you are not suitable for doctoral study.