Contact Information, Appointments, and FNIS Registration

Office Hours and Contact information: International Tax Department staff can be reached by email at or by phone (203) 432-5530 or (203) 432-5597 Monday through Friday between 8:00 a.m. and 4:00 p.m.

Appointments: All in person appointments must be scheduled in advance. Walk-in appointments are not available.

Scheduled appointments are held via Zoom or Teams with Daysi Cardona, International Tax Coordinator. Appointments are available on Tuesdays and Wednesdays between 10:00 a.m. and 4:00 p.m. and should be scheduled in advance by emailing In the appointment request, please include your name, UPI number and the best time for a meeting.

If you are unable to join a meeting via Zoom or Teams and require an on-campus appointment, please request an appointment in advance by emailing

A staff member will typically respond to your request within one business day. However, calls and email volume are high during the months of August and September. During these peak times, we will respond to you as soon as possible.

Signed Tax Treaty Forms: Signed treaty forms (e.g., Form 8233, Form W-8BEN and Form W-9) can be dropped off in the secure Mailbox located on the First floor lobby of 25 Science Park. This mailbox is checked regularly, and any forms dropped off will be processed within 3 business days.

Alternatively, the signed tax treaty forms can be mailed to:

Yale University
International Tax Department
P.O. Box 208239
New Haven, CT 06520-8239

Foreign National Information System (FNIS) application

International students, scholars, faculty, and staff receiving payment from the University (e.g., taxable scholarship, fellowship, stipend, wages) are required to complete a FNIS application in order to enable the university to properly withhold income tax and report payments in accordance with U.S. tax requirements. Please email to request the FNIS application link. In the email, please include your email address @ Yale, your name as it appears in the Yale Payroll system, and your University Person Identifier (UPI) number; the UPI number can be found on your Yale ID card.

The information you provide on the FNIS application assists in the determination of your U.S. tax residency status.