How can I establish values for casualty and theft deduction after storm damage to property?
We got hit with two separate storms last summer that completely wrecked parts of our property. The first one caused serious flooding in our basement, and the second one caused another basement flood plus washed away part of our fence and retaining wall. It was a total nightmare dealing with all this. Both storms ended up being declared Major Disaster Declarations by FEMA. I'm trying to use the workbook from publication 584 to figure out the casualty and theft deduction for my taxes. From what I understand, I need to use the smaller of either a) cost or other basis, or b) fair market value before the disaster minus fair market value after. But I'm really confused about how to establish these values in the first place. Our insurance only covered about $8,200 of the damage, and we spent around $15,700 out of pocket for repairs. The fence alone cost us $4,300 to replace. We have receipts for everything we fixed, but I'm not sure if that's what I'm supposed to use for the calculations. Does anyone know how I'm supposed to determine the "fair market value" before and after? Do I need to get some kind of official appraisal? This is my first time dealing with casualty losses and I want to make sure I'm doing it right.
21 comments


Avery Flores
You're on the right track with Publication 584, which is specifically designed for casualty, disaster, and theft loss workbooks. For establishing values for your casualty deduction, here's how you should approach it: For the "cost or other basis" - this is typically what you originally paid for the property plus improvements. For specific items like your fence and retaining wall, use the original installation costs if you have those records. For "fair market value" (FMV) before and after - this is trickier but doesn't necessarily require a formal appraisal for every situation. You can establish FMV through: - Photos before and after the disaster - Repair estimates from contractors - Receipts for repairs (which you already have) - Comparisons to similar properties in your area Since you have repair receipts totaling around $15,700 with insurance covering $8,200, those numbers will be important in your calculation. Keep in mind that you can only deduct losses that weren't reimbursed by insurance. Also remember that casualty losses from federally declared disasters can be claimed either in the year they occurred or on the previous year's tax return (which might be advantageous depending on your tax situation).
0 coins
Zoe Gonzalez
•Thanks for the detailed explanation! I have a question though - do I need different calculations for different types of property damage? Like would I calculate the basement flooding differently than the fence damage? Also, is there a threshold amount I need to reach before I can claim this deduction?
0 coins
Avery Flores
•You would calculate each damaged item separately using the same method (smaller of adjusted basis or decrease in FMV), then combine them for your total casualty loss. Document each item individually in the Publication 584 workbook. For thresholds, there are two important ones: First, you must reduce each casualty event by $100. Then, you must reduce your total annual casualty loss amount by 10% of your adjusted gross income (AGI). Only the amount exceeding these thresholds can be claimed as an itemized deduction on Schedule A.
0 coins
Ashley Adams
After dealing with similar flood damage last year, I found a service called taxr.ai (https://taxr.ai) that really helped me figure out all this casualty loss stuff. I was totally overwhelmed with trying to determine fair market values and what documentation I needed to keep. I uploaded photos of the damage, my repair receipts, and insurance statements to their system, and they analyzed everything and helped me maximize my casualty loss deduction. They even explained exactly how to document each calculation for my specific situation. The guidance was super specific about how to handle the different types of property damage I had (structural, appliances, furniture, etc).
0 coins
Alexis Robinson
•How long did it take them to process everything? I've got a similar situation with storm damage, and I'm worried about getting everything filed correctly before the deadline.
0 coins
Aaron Lee
•Did they help with determining if you should claim the loss in the year it happened or the previous year? I've heard you can choose which is better tax-wise when it's a federally declared disaster.
0 coins
Ashley Adams
•It only took about 2 days to get all my documents processed and get personalized guidance. They're pretty quick with their analysis. Yes, they actually ran the numbers both ways to see whether claiming on the previous year's return or the current year would give me the better tax benefit. In my case, claiming it on the previous year made more sense because my income was higher then, so the 10% AGI limitation had less impact. They showed me exactly how to file an amended return for the previous year to claim the loss.
0 coins
Alexis Robinson
I just wanted to follow up about my experience with taxr.ai after checking them out. I was hesitant at first, but I'm so glad I tried it! I uploaded my disaster documentation (pictures of my flooded garage, receipts for repairs, insurance claim denial) and they provided a detailed analysis of how to calculate my casualty loss. They explained that for my specific situation, I should use the repair costs as evidence of my decrease in fair market value, but they also showed me how to properly document that these repairs only restored my property to its previous condition (which is important for IRS purposes). I was able to claim an additional $7,200 that I would have completely missed without their guidance. Super helpful for navigating the Publication 584 worksheets!
0 coins
Chloe Mitchell
If you're struggling with getting the documentation you need for your casualty loss, you might also need to speak directly with the IRS to get clarification. I was in a similar situation after hurricane damage and spent days trying to call the IRS without getting through. I finally used a service called Claimyr (https://claimyr.com) that got me connected with an IRS agent in under 30 minutes. You can see how it works in this video: https://youtu.be/_kiP6q8DX5c. They basically hold your place in the IRS phone queue so you don't have to waste hours listening to hold music. The IRS agent I spoke with explained exactly what documentation I needed to substantiate my casualty loss and how to properly report losses from a federally declared disaster.
0 coins
Michael Adams
•Wait, how does this actually work? Do they just call the IRS for you or is it some kind of special access? I've been trying to get through to the IRS for weeks about my disaster claim.
0 coins
Natalie Wang
•I'm pretty skeptical about this. The IRS phone lines are a nightmare for everyone. How would a service get you through faster than anyone else? Sounds like they're just charging you for something you could do yourself if you're patient enough.
0 coins
Chloe Mitchell
•They don't have special access - they use technology to navigate the IRS phone system and wait in the queue for you. When they reach an agent, they call you and connect you directly. It's basically like having someone wait on hold for you. I was skeptical too! But after trying to get through on my own for days, I decided it was worth trying. I expected it to still take hours, but I got connected to an actual IRS agent in about 25 minutes. The agent walked me through exactly how to document my fence damage versus interior water damage for casualty loss purposes - they're treated differently but still part of the same casualty event.
0 coins
Natalie Wang
I need to admit I was completely wrong about Claimyr. After commenting here, I decided to try it myself since I've been trying to reach the IRS for 3 weeks about a disaster relief question. Got connected to an IRS agent in 35 minutes when I had previously spent at least 8 hours on failed attempts. The agent clarified that for my situation, I needed to use the decrease in fair market value method rather than just adding up receipts. They explained I should get statements from contractors showing estimates both for repairs and for the value decrease. Also confirmed I could claim the loss on either this year's taxes or last year's by filing an amendment. Saved me from making a costly mistake on my disaster claim!
0 coins
Noah Torres
Just wanted to add that if you're using the "cost basis" approach for your casualty loss, make sure you account for depreciation! This is especially important for things like fences, retaining walls, and other improvements that aren't part of your main structure. The IRS expects you to factor in the age and condition of these items before the casualty. For example, if your fence was 10 years old when it was damaged, you wouldn't use the full original cost as your basis. You'd need to reduce it based on the expected useful life (which for a fence might be 15-20 years depending on materials).
0 coins
Caden Nguyen
•Thank you for pointing this out! So for my fence that was about 8 years old when it got washed away, would I just estimate that it had depreciated by like 40% if I think it had a 20-year lifespan? Or is there a specific depreciation schedule I should be using for these calculations?
0 coins
Noah Torres
•Yes, that's basically the right approach. There's no official IRS depreciation schedule specifically for casualty losses of personal property, so a reasonable estimate based on the expected useful life is appropriate. For your 8-year-old fence with an expected 20-year lifespan, calculating approximately 40% depreciation is reasonable. Document your reasoning (why you chose 20 years as the lifespan based on materials and typical durability) and keep that with your tax records. The key is being able to show that you made a good-faith effort to determine a reasonable depreciated value.
0 coins
Samantha Hall
Has anyone used tax software to file casualty losses? I'm trying to use TurboTax for mine but it's not very clear on how to enter all this information.
0 coins
Ryan Young
•I used TaxAct for my disaster claim last year and it walked me through it pretty well. When you get to the deductions section, look for "Casualty and Theft Losses" (usually under itemized deductions). It should prompt you for the disaster declaration information, dates, and then walk you through the calculations. Make sure you have all your numbers worked out beforehand though!
0 coins
Samantha Hall
•Thanks! I'll check out TaxAct. I was getting frustrated with TurboTax because it wasn't clear where to enter the FEMA disaster declaration number and I wasn't sure if I was calculating everything correctly.
0 coins
Haley Stokes
I went through this exact situation after tornado damage to my property last year. One thing that really helped me was creating a detailed inventory with photos for each damaged item or area. For your basement flooding, document everything that was damaged - flooring, drywall, electrical work, etc. - and get separate repair estimates for each category. Since you mentioned you have receipts for $15,700 in repairs, make sure you're separating these by casualty event if the IRS requires it (your two separate storms). Each storm event gets reduced by $100, so you might want to check if combining them or keeping them separate gives you a better deduction. Also, don't forget that you can deduct costs for things like temporary housing, storage, or cleanup that were necessary because of the disaster. I missed claiming some of these expenses initially and had to amend my return. Keep every receipt related to the disaster - even seemingly small expenses can add up! The key thing I learned is that "fair market value" doesn't have to be a formal appraisal for most residential property. Your repair costs, contractor estimates, and before/after photos are usually sufficient documentation for the IRS.
0 coins
Axel Far
•This is really helpful advice about documenting everything separately! I'm dealing with similar storm damage and hadn't thought about the temporary expenses. When you say "temporary housing" - does that include hotel costs if we had to stay elsewhere while repairs were being done? Also, did you find that keeping the storm events separate vs. combining them made a significant difference in your final deduction amount?
0 coins