The deadline for submitting FY2018 Form 471 is today, March 22, at 11:59pm ET. The SLD is experiencing a very high volume and have taken an extraordinary step of locking EPC portal down this afternoon. Those affected include applicants that had not logged in to the EPC portal prior to the lock down. Applicants are advised to call the SLD’s helpline at 888-203-8100 and get issued a case number in case an appeal is necessary.