Innovating and migrating proposal preparation and submission capabilities from FastLane to Research.gov is part of the ongoing NSF information technology modernization efforts. In accordance with NSF Important Notice No. 147 issued in September 2020, NSF has taken proactive steps to incrementally move the preparation and submission of all proposals from FastLane to Research.gov. Currently, more than 90% of all funding opportunities require proposal submission in Research.gov. Effective with implementation of the Proposal & Award Policies & Procedures Guide (PAPPG) (NSF 23-1) on January 30, 2023, FastLane will be removed as a submission option from all funding opportunities. Grants.gov remains a submission option for most NSF proposals. 

Learn more about this change here.