Can I Carryback A 2025 Nol. For tax years 2013 through 2018, the nol could be carried back to each of the past 2 years. Can be used only to offset up to 80% of.

Nols created in tax years ending after dec. Ordinarily, you must carry an nol back to the earliest year within the carryback period in which there is taxable income, then to the next earliest year, and so on.