All men in the United States who are born on or after January 1, 1960, must register with the Selective Service within 30 days of their 18th birthday and up to, but not including, their 26th birthday. This registration requirement applies to almost all males who are 18 to 25 years old, including U.S. citizens, veterans discharged before their 26th birthday, non-U.S. citizens residing in the U.S. (including undocumented immigrants and legal permanent residents), and dual nationals of the U.S. and another country. Men who turn 18 while participating in a qualifying program must register within 30 days of their 18th birthday to continue receiving program services. Failure to register by age 26 can result in penalties and loss of eligibility for federal jobs, student aid, and citizenship processes for immigrants. In summary: men must register for the Selective Service system within 30 days after turning 18, and certainly by their 26th birthday if not earlier.
