International students at Harvard University are advised to return to the United States by September 15, 2026 . New U.S. visa rules from the Department of Homeland Security take effect on this date.
New Visa Rules End Duration of Status
The U.S. is ending the “Duration of Status” (D/S) system. This system allowed F-1 and J-1 visa holders to stay as long as they maintained their status. Under the new rules, students entering the U.S. will receive an "Admit Until Date" on their Form I-94. This date will specify the length of their authorized stay. Students will likely need to apply for formal extensions if their program exceeds this date.
The change may impact grace periods after study. It can also affect rules for changing programs or transferring universities. Existing students in the U.S. before September 15, 2026, may receive transition provisions. Students traveling abroad and returning after this date could be subject to the new system.
Travel and Next Steps for Students
Students planning international travel should carefully consider the new rules. Students returning to the U.S. after September 15, 2026 , may fall under the new fixed-date system. This affects travel plans for students visiting home or going abroad for other reasons.
Students should review their visa documents. This includes their Form I-20 or DS-2019 and I-94 records. They should also consult their university’s international student office. This office can explain how travel might affect immigration status. Students needing additional time for their degrees, including those on OPT and STEM OPT, should check new extension requirements.
The new visa rules face a legal challenge from higher education and labor organizations. Until official changes are made, students must follow university guidance. They should also monitor official government updates regarding the new regulations.
