The US Department of Homeland Security is set to change F-1 student immigration rules on September 15, 2026. The shift replaces the long-standing “duration of status” (D/S) approach with a fixed, program-based period of admission, and it also shortens the time students have to prepare after completing their program.

Under the new DHS final rule, F-1 students generally receive an admission period tied to the length of the program listed on their Form I-20, with a maximum admission period of four years for most students. The post-completion departure period is reduced from 60 days to 30 days. Students who need more time to finish studies, start a new program, or pursue post-completion Optional Practical Training (OPT) or STEM OPT may need to use an Extension of Stay (EOS) process with USCIS, typically through Form I-539.

Sources also describe additional limits related to changing majors or programs and transferring schools, with tighter restrictions for students at or above the graduate level and for transfers during a first year in certain cases. Universities’ guidance highlights practical issues around international travel and Form I-94 records, noting that students who leave and re-enter after September 15 may receive a date-certain “Admit Until Date” instead of D/S notation, and they may need to manage extension timing accordingly. A transition framework applies to students already in the US when the rule takes effect.