Can our business claim a federally declared disaster loss on last year's return instead of this year's?
A qualifying disaster loss may be elected onto the immediately preceding tax year's return under Section 165(i), but eligibility and election procedures…
By AE Tax Advisors Team · Updated October 29, 2026
A qualifying disaster loss may be elected onto the immediately preceding tax year's return under Section 165(i), but eligibility and election procedures must be satisfied. The election changes the deduction year; it does not change the underlying casualty-loss measurement or make insurance-reimbursed amounts deductible.
A specific business-owner situation
A business suffers a qualifying loss and considers amending the prior-year return for faster tax recovery. The preparer must compare years and apply the election rules rather than simply moving a repair expense.
Illustrative example, not a client result.
What to establish before filing
- Confirm the qualifying declaration and loss.
- Compute the deductible casualty amount.
- Review election deadline procedure and year comparison.
Which fact changes the answer?
A loss eligible for the specific disaster election differs from an ordinary casualty without that election. The declaration and location facts matter.
A mistake to avoid
Do not move an estimated repair budget to last year's return as a casualty loss.
Records that support the decision
- Disaster identification.
- Basis and loss computation.
- Insurance and election records.
The decision to document
Model the actual prior-year and current-year results, then document a timely election and any required amended reporting.
Business-owner tax planning and preparation scope · Discuss advisory scope with AE
Related questions
- Our business is in a disaster area, but the owner lives elsewhere. Can filing relief still apply?
- The IRS postponed our business return deadline after a disaster. Are all payroll deposits postponed too?
Sources and editorial context
- IRS: disaster-specific tax relief announcements
- IRS Publication 547: casualty losses and disaster elections
General educational information prepared with AI assistance. No individual professional review is claimed. Apply the relevant tax-year rules to the actual records. Editorial policy · AI disclosure.