The Internal Revenue Service has issued guidance providing safe harbor methods for taxpayers looking to determine the amount of their casualty and theft losses, including losses from recent hurricanes and natural disasters.
For instance, one of the safe harbor methods allows a homeowner to determine the amount of loss, up to $20,000, by obtaining a contractor estimate of repair costs, while another lets a homeowner determine the amount of loss resulting from a federally declared disaster using the repair costs on a signed contract prepared by a licensed contractor.

The guidance also provides a table for determining the value of personal belongings damaged, destroyed or stolen as a result of a federally declared disaster.
The safe harbor methods detailed in Rev. Proc. 2018-08 are effective on Dec. 13; the safe harbor method in Rev. Proc. 2018-09 is effective for losses that are attributable to the 2017 hurricanes and that arose in the 2017 disaster area after Aug. 22.
Taxpayers who want to explore claiming these losses by filing an original or amended return for tax year 2016 can see the
The 2017 revision of 4684, its instructions and any additional information is expected to be available before the start of the filing season at
To help taxpayers navigate casualty loss issues, the IRS has created a web page, “