Beginning January 1, 2021, a one-participant plan or a foreign plan required to file an annual return can file Form 5500-EZ electronically using the Department of Labor’s EFAST2 filing system, or file Form 5500-EZ on paper with the IRS. Form 5500-SF can no longer be used by a one-participant plan or a foreign plan filer in place of Form 5500-EZ. Information for a one-participant plan or a foreign plan filed electronically with EFAST2 filing system will not be available to the public on DOL’s website. A one-participant plan or a foreign plan must file Form 5500-EZ electronically through the EFAST2 filing system, if the plan sponsor is subject to IRS e-filing requirements pursuant to Treas. Reg. 301.6058-2.