Yes. Generally, you are required to carry back any NOL arising in a taxable year beginning in 2018, 2019, or 2020, to each of the five taxable years preceding the taxable year in which the loss arises. However, you may file an election to either waive the entire five-year carryback period or to exclude all of your section 965 years from the carryback period. Guidance regarding when and how to file these elections is provided in section 4.01 of Revenue Procedure 2020-24