Individual Nol Carryback 2025 Schedule. To claim a refund of taxes for an nol carryback, taxpayers file a single tentative refund claim that covers all carryback years, or an amended return for each carryback year. What is an nol/tax loss carryforward?

However, if a refund is attributable to an nol carryback, a claim for refund can be filed within 3 years of the due date (including extensions) of the nol source year return. Example if firms could not carry forward losses ;