Disaster Area Losses Special rules apply to Presidentially declared disaster area losses. A Presidentially declared disaster is a disaster that occurred in an area declared by the President to be eligible for federal assistance under the Disaster Relief and Emergency Assistance Act. This part discusses the special rules for when to deduct a disaster area loss and what tax deadlines may be postponed. For other special rules, see Publication 547. When to deduct the loss. If you have a deductible loss from a Presidentially declared disaster area, you can choose to deduct that loss on your return or amended return for the immediately preceding tax year. If you make this choice, the loss is treated as having occurred in the preceding year. Claiming a qualifying disaster loss on the previous year's return may result in a lower tax for that year, often producing or increasing a cash refund. You must make this choice to take your casualty loss for the disaster in the preceding year by the later of the following dates. The due date (without extensions) for filing your tax return for the tax year in which the disaster actually occurred. The due date (with extensions) for the return for the preceding tax year. Postponed tax deadlines. The IRS may postpone for up to 120 days certain tax deadlines of taxpayers who are affected by a Presidentially declared disaster. The tax deadlines the IRS may postpone include those for filing income and employment tax returns, paying income and employment taxes, and making contributions to a traditional IRA or Roth IRA. If any tax deadline is postponed, the IRS will publicize the postponement in your area and publish a news release, revenue ruling, revenue procedure, notice, announcement, or other guidance in the Internal Revenue Bulletin (IRB). Who is eligible. If the IRS postpones a tax deadline, the following taxpayers are eligible for the postponement. Any individual whose main home is located in a covered disaster area (defined later). Any business entity or sole proprietor whose principal place of business is located in a covered disaster area. Any individual who is a relief worker affiliated with a recognized government or philanthropic organization and who is assisting in a covered disaster area. Any individual, business entity, or sole proprietor whose records are needed to meet a postponed deadline, provided those records are maintained in a covered disaster area. The main home or principal place of business does not have to be located in the covered disaster area. Any estate or trust that has tax records necessary to meet a postponed tax deadline, provided those records are maintained in a covered disaster area. The spouse on a joint return with a taxpayer who is eligible for postponements. Any other person determined by the IRS to be affected by a Presidentially declared disaster. Covered disaster area. This is an area of a Presidentially declared disaster area in which the IRS has decided to postpone tax deadlines for up to 120 days. Abatement of interest. In addition to postponing the tax deadlines, the IRS may grant an extension to file income tax returns and pay income tax. In this case, the IRS will abate the interest for the length of the extension period and for the length of any postponement.