To become a Mandal Revenue Officer (MRO), also known as a Tahsildar in some states, you typically need to appear for the state-level Public Service Commission (PSC) exams.

1. Educational Qualification:

- You must have a Bachelor's degree in any discipline from a recognized university. This is the minimum qualification required to be eligible for the state PSC exams.

2. Apply for the State Public Service Commission (PSC) Exam:

- You need to apply for the specific state PSC exam conducted for the recruitment of Group II officers (or equivalent) in your state. The exact name and process might differ depending on the state

3. Prepare for the Exam:

- preliminary Exam:This is an objective-type exam covering general studies, mental ability, and other relevant subjects.

- Main Exam: If you clear the preliminary exam, you'll be eligible to appear for the main Exam.

- Interview: After clearing the main exam, you'll be called for a personal interview.

4. Undergo Training:

- Once you clear all stages of the exam, you’ll undergo training specific to the role of MRO. This training will cover administrative functions, revenue collection, land records management, and other responsibilities of an MRO.

5. Appointment as MRO:

- After successful completion of training, you will be appointed as an MRO in your respective state.