During the Closeout process the awarding agency determines whether all applicable administrative actions and all work required as a condition of the award have been completed by the award recipient.
For most grants and contracts, the final technical and financial reports must be submitted within a 90-day period following the grant or contract end date. NIH and NSF allow 120 days. For non-federal awards (i.e. state, industry, non-profits), the closeout procedures vary, depending on the policies of the sponsor. The sponsor will clarify terms and conditions (T/C) for Closeout in the award or agreement. In addition to the technical and financial reports, sponsors may have other requirements, e.g., NIH requires a Final Invention Statement.
If you are nearing the end date/Closeout period of the grant or contract and need more time to complete your research, submit a no-cost extension request to your Research Process Manager (RPM) well in advance of the end date.