Year of Disaster Loss

[Randall]

What year does the loss occur?  Year of the disaster itself or maybe the following year when damage is repaired and costs more than insurance reimbursements?  If client doesn't know yet, how can I determine the loss in 2022.  Can he claim it in 2023?

[TexTaxToo]

https://www.irs.gov/publications/p547#en_US_2021_publink100071819

Quote

The disaster year is the tax year in which you sustained the loss attributable to a federally declared disaster. Generally, a disaster loss is sustained in the year the disaster occurred. However, a disaster loss may also be sustained in a year after the disaster occurred. For example, if a claim for reimbursement exists for which there is a reasonable prospect of recovery, no part of the loss for which reimbursement may be received is sustained until it can be ascertained with reasonable certainty whether you will be reimbursed.

Pub 547 continues to include the special rules for qualified 2017 disasters since it is still possible to sustain a loss in 2022.