PS Statement of Purpose. A written essay concerning your purpose for receiving a Doctor of Philosophy degree, your reasons for wanting to study at Purdue University, your research interests, along with your professional plans for the future. CV Resume. Applicants should provide a resume and/or employment history. Fee The Graduate School application fee is $60 (U.S. dollars) for domestic applicants and $75 (U.S. dollars) for international applicants. You must pay your application fee online with your credit card. Visa, MasterCard and Discover cards are accepted and processed using a secured online payment system. Your application will not be processed until your nonrefundable application fee has been paid. RL A minimum of two letters of recommendation are required. Academic or professional recommendations are acceptable. Transcript Transcripts. Economics will accept unofficial transcripts and/or academic documents uploaded through the online application system for review purposes. You will only need to provide official transcripts and/or academic records if you are recommended for admissions. One uploaded transcript from each college/university you have attended as a registered student, regardless of the number of courses taken, is required. If your native language is not English, an English translation transcript, certified by the college/university must be uploaded along with the transcript in the native language. If you are recommended for admission, you must send both an official transcript in the language of instruction and a certified official English translation. If your degree is not shown as having been awarded directly on the transcript, it will be required that you provide a certified official copy of your diploma in the language of instruction and a certified official English translation.