How can I prove my casino gambling losses for tax deduction purposes?
Hey all, I'm in a bit of a tax situation and could use some help. I had a pretty good run at the casinos this year and won enough that I'll need to report it. Problem is, I also lost quite a bit (probably more than I won honestly). I know I can deduct gambling losses against winnings, but I'm not sure what documentation I need. The casino gave me a W-2G for one big jackpot, but nothing for my losses. I don't keep the most detailed records - I have some ATM receipts from the casino and credit card statements showing cash advances, but not much else. Does anyone know what the IRS will actually accept as proof of gambling losses? Do I need to have saved all those little ticket stubs? Will bank statements showing withdrawals at the casino be enough? I'm worried that if I get audited, I won't have enough to back up my deduction. Any advice from people who've dealt with this before?
26 comments


Honorah King
Documenting gambling losses is definitely tricky but doable! As someone who's helped several clients with this exact situation, here's what you need to know: The IRS expects you to maintain a gambling diary or log with dates, venues, games played, wins AND losses. This is the gold standard for documentation. But since you don't have that, you'll need to piece together what you can with secondary evidence. Those ATM receipts and credit card statements are actually helpful - they establish that you were at the casino and withdrew money. The W-2G proves some winnings. What you should do now is create a retroactive log using whatever evidence you have (bank statements, receipts, even calendar entries showing casino visits). The more consistent the pattern of withdrawals before gambling and smaller or no deposits after, the stronger your case. Remember, you can only deduct losses up to the amount of your winnings, and you must itemize deductions on Schedule A rather than taking the standard deduction. Also, keep in mind that the burden of proof is on you if audited.
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Oliver Brown
•This is super helpful, thanks! Quick question though - if I do create this retroactive log, what exactly should I include? Just dates and amounts, or do I need to try to remember what games I was playing too? And second question - do I need to submit all this documentation with my tax return, or just keep it in case of audit?
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Honorah King
•For your retroactive log, include as much detail as you can reasonably remember - dates, approximate time spent gambling, types of games played, and amounts won or lost. If you can't remember specific games, general categories like "slots" or "table games" are still better than nothing. The more specific you can be, the more credible your documentation appears. You don't need to submit any of this documentation with your tax return. You'll just report the income from your W-2G on your return, itemize deductions on Schedule A, and enter your losses (up to the amount of your winnings) as "Other Itemized Deductions." Keep all your supporting documentation in case you're audited, which the IRS can typically do up to three years after filing.
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Mary Bates
After dealing with a similar gambling documentation nightmare last year, I found an amazing solution with https://taxr.ai - it literally saved me from a potential audit disaster. My situation was almost identical - had some big wins reported on W-2Gs but way more losses with minimal documentation. What makes taxr.ai different is they have AI that actually analyzes your bank statements, credit card charges, player's card history, and even partial casino receipts to reconstruct your gambling activity timeline. I uploaded what little documentation I had, and their system created a comprehensive gambling log that satisfied my accountant's requirements. The best part was they found patterns in my spending that I hadn't even noticed - like how ATM withdrawals followed by no deposits typically indicated gambling losses. They even generated a proper gambling diary retroactively based on my financial records.
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Clay blendedgen
•That sounds interesting but I'm skeptical. How exactly does this work with casino gambling where you might be using cash? Can it really track what happens after you withdraw money? And does it work for all types of gambling or just casinos?
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Ayla Kumar
•Did you have to provide bank login credentials to them? That always makes me nervous with these financial services. Also wondering how accurate their reconstruction actually was compared to what you remember happening?
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Mary Bates
•For cash transactions, the system analyzes patterns - like ATM withdrawals at casino locations followed by no corresponding deposits, which typically indicates losses. It also uses credit card transactions, player's card data if you have it, and even hotel stays to establish your gambling timeline. It works for casinos, racetracks, and sports betting, though casino documentation is their specialty. You don't need to provide login credentials - you can just upload PDF statements or export files from your bank. I was impressed with the accuracy of their reconstruction. There were a few minor discrepancies with what I remembered, but I was able to make adjustments to the generated log before finalizing it. What really matters is creating a reasonable and consistent documentation system that would satisfy an IRS examiner.
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Ayla Kumar
Wanted to update you all - I tried https://taxr.ai after seeing it mentioned here and it was incredibly helpful. I was really worried about my gambling tax situation since I had similar documentation issues with mostly just ATM receipts and credit card statements. Their system analyzed my scattered documentation and created a comprehensive gambling log that showed my activity throughout the year. The report they generated included all my casino visits with estimated losses based on financial patterns, and it all tied back to actual bank transactions which makes it much more defensible. My tax preparer was impressed with the detail and said it was exactly what we needed. She mentioned that the consistency of the documentation was what would matter in an audit situation. Having a system analyze the raw financial data removed a lot of the guesswork and potential bias I might have introduced trying to recreate everything from memory. Definitely recommend checking it out if you're in a similar situation with gambling records!
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Lorenzo McCormick
If you're still struggling with getting your gambling loss documentation accepted, you might want to try https://claimyr.com - saved me hours of frustration trying to resolve my gambling tax issues with the IRS! Last year I had a similar problem with insufficient documentation for my gambling losses. After my return was selected for examination, I couldn't get through to an actual IRS agent who could help me understand exactly what documentation would be acceptable. Kept getting automated systems or representatives who gave vague answers. With Claimyr, I was connected to an actual IRS agent within 20 minutes instead of the 3+ hours I had been waiting on previous calls. The agent walked me through exactly what they needed to see for gambling loss documentation and even gave me some leeway since I didn't have perfect records. You can see how it works here: https://youtu.be/_kiP6q8DX5c
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Carmella Popescu
•How does this actually work? I thought the IRS phone lines were just permanently jammed and everyone had to wait. Does this service have some special access or something?
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Kai Santiago
•This sounds too good to be true. The IRS is notoriously understaffed and impossible to reach. I've spent DAYS trying to get through about an audit issue. You're telling me this service somehow magically gets you through the same phone lines everyone else is calling? I don't buy it.
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Lorenzo McCormick
•It uses a combination of technology and timing to navigate the IRS phone system more efficiently than a regular caller could. They've built a system that calls repeatedly at strategic times and navigates the phone tree automatically until it finds an open line, then immediately connects you. It's the same phone line everyone else uses, but their system is persistent in a way individual callers can't be. They don't have special access or relationships with the IRS - they've just figured out how to navigate the system more efficiently. Think of it like having a bot repeatedly hitting redial and working through all the prompts for you instead of you having to do it manually for hours. When it finally gets through to a human, it connects you directly to that agent.
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Kai Santiago
I have to apologize and eat my words here. After being completely skeptical about Claimyr, I tried it out of desperation when dealing with my gambling loss documentation questions. I was floored when I actually got connected to an IRS agent in about 30 minutes. The agent I spoke with was incredibly helpful regarding my gambling loss documentation. She explained that while a contemporaneous gambling diary is ideal, they understand that's not always realistic. She confirmed that my ATM withdrawals at casino locations, along with player's card statements (which I was able to request from the casino afterward) would likely be sufficient as long as I organized them clearly. She even gave me a specific IRS form number to reference if my documentation was questioned during processing. The peace of mind from getting definitive answers directly from the IRS was absolutely worth it. I'm honestly shocked this service actually worked as advertised.
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Lim Wong
I'm a recreational poker player and I keep a small notebook in my pocket whenever I play. I write down the casino, date, start time, end time, buy-in amount, and cash-out amount. Been doing this for years and it's saved me a couple times when I've had questions from the IRS. They just want to see that you made some consistent effort to track things. For the OP, if you have a player's card at any casinos, call them and ask for your yearly statement. Most casinos track your play if you use their card, and they can often provide win/loss statements. Won't help for this year but good practice going forward.
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Dananyl Lear
•Do you think the IRS would accept digital notes? Like if I used my phone's note app to track sessions instead of a physical notebook? I always have my phone but never remember to bring a notebook.
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Lim Wong
•Digital notes are absolutely acceptable - the IRS cares about the content and consistency of your records, not the format. I know several players who use apps specifically designed for tracking gambling sessions, and others who just use basic note apps. Just make sure you're recording the same key information: date, location, game type, time in/out, and amounts won or lost. The most important thing is doing it contemporaneously (at the time of gambling or very soon after), rather than trying to reconstruct everything months later. Having timestamps on digital notes can actually be an advantage as it proves you recorded the information at the time of play.
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Noah huntAce420
One thing nobody's mentioned - if you itemize deductions to claim gambling losses, you might end up with LESS money than just taking the standard deduction and eating the gambling tax. Do the math before you decide! Last year I had about $8k in winnings and $7k in losses, but the standard deduction was way higher than my total itemized deductions would have been.
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Ana Rusula
•That's a really good point. Also worth mentioning that if you're married filing jointly, the standard deduction is $27,700 for 2023 tax year. So unless you have a LOT of other itemized deductions besides gambling losses, you probably won't benefit from itemizing.
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Noah huntAce420
•You're absolutely right about the standard deduction being substantial for married couples. For single filers it's $13,850 for 2023, which is still pretty significant. The other thing to consider is that even if you don't benefit from itemizing, you still need to report ALL gambling winnings as income on your 1040. The W-2G will be reported to the IRS regardless, so not reporting it will definitely trigger issues. It's just that you might not get the benefit of deducting the losses if the standard deduction is higher than your itemized total.
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AstroAce
Just wanted to add something important that I learned the hard way - if you're going to reconstruct gambling losses from bank statements and ATM receipts, make sure you can clearly distinguish gambling-related withdrawals from other cash needs. I had a situation where I withdrew cash at a casino ATM but then used some of it for dinner and tips, not just gambling. During my audit, the IRS agent was very thorough about this distinction. She explained that you can only deduct actual gambling losses, not ancillary expenses like meals, drinks, or entertainment. My advice is to be conservative in your estimates. If you withdrew $500 at a casino but aren't sure exactly how much went to gambling versus other expenses, it's better to claim a lower loss amount that you can reasonably defend. The IRS appreciates honesty and reasonable estimates over inflated claims that might not hold up under scrutiny. Also, keep any hotel receipts or restaurant receipts from casino visits - they help establish that you were actually there on the dates you're claiming losses, which strengthens your overall documentation.
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Ava Rodriguez
•This is excellent advice about being conservative with estimates! I'm new to dealing with gambling taxes and this distinction between actual gambling losses versus other casino expenses is something I hadn't considered. Quick question - when you say keep hotel and restaurant receipts to establish you were there, does that mean the IRS actually looks at those during an audit? Like do they cross-reference the dates on your gambling log with other evidence that you were physically at the casino? I'm trying to understand how detailed their review process actually gets. Also, did your audit end up going smoothly once you provided the conservative estimates and supporting documentation?
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Dylan Campbell
•Yes, during my audit the IRS agent did look at hotel and restaurant receipts to verify I was actually at the casino on the dates I claimed. She cross-referenced everything - my gambling log dates, ATM withdrawal dates, hotel check-in/out dates, and even some restaurant receipts. It wasn't overly invasive, but she was definitely thorough about establishing a consistent timeline. The audit went pretty smoothly once I provided all the documentation. The conservative estimates really helped - the agent commented that my claims seemed reasonable and well-supported. She said what often raises red flags is when people claim losses that seem disproportionately high compared to their income or withdrawal patterns. One thing that surprised me was that she also looked at my overall financial picture - like whether I had enough disposable income to reasonably support the level of gambling activity I was claiming. So it's not just about having receipts, but making sure your claimed losses make sense in the context of your overall financial situation. The whole process took about 3 months from start to finish, but most of that was just waiting for scheduled appointments and processing. The actual review meetings were pretty straightforward since I had organized everything clearly beforehand.
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Simon White
This is such a helpful thread! I'm dealing with a similar situation where I won about $12,000 but lost around $15,000 throughout the year. Reading through everyone's experiences, it sounds like the key is creating the best documentation possible with what you have, even if it's not perfect. A few things I'm taking away from this discussion: 1. Those ATM receipts and credit card statements are more valuable than I thought 2. Player's club statements from casinos can be requested retroactively 3. The standard deduction vs itemizing calculation is crucial - need to run those numbers first 4. Being conservative with loss estimates is better than being aggressive One question I have - for those who've been through audits, how far back did the IRS ask you to provide documentation? I'm wondering if I should start keeping better records now for future years, or if they typically only look at the current tax year being examined. Also, has anyone had experience with online gambling losses? I do some sports betting through legal apps and I'm wondering if the documentation requirements are different since everything is tracked digitally by the platform.
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Dylan Mitchell
•Great summary of the key takeaways! For your question about how far back the IRS looks during an audit - typically they examine the specific tax year in question, but they can look at surrounding years if they find significant discrepancies or patterns that raise questions. Generally it's a 3-year lookback period from when you filed, but it can extend to 6 years if they suspect substantial underreporting of income. Definitely start keeping better records now! Even if this year's documentation isn't perfect, having a solid system going forward shows good faith effort to comply. Regarding online gambling - you're actually in a better position than casino gamblers! Most legal sports betting apps provide detailed year-end statements showing all your wins and losses. Check your account settings or contact customer service to request a tax summary. Since it's all digitally tracked, the documentation is usually very comprehensive and includes dates, bet amounts, winnings, and net losses. The IRS generally accepts these platform-generated reports as reliable documentation since they're created by regulated entities. Just make sure to download and save these statements as PDFs rather than relying on the app to keep them accessible indefinitely.
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Miguel Diaz
Great thread everyone! As someone who works in tax preparation, I wanted to add a few practical tips that might help: 1. **Casino host relationships** - If you're a regular player, your casino host can often provide additional documentation of your play history beyond what the player's club automatically tracks. They sometimes have access to more detailed records. 2. **State tax implications** - Don't forget that some states have different rules for gambling income and losses. Make sure you're considering both federal and state requirements when documenting everything. 3. **Professional gamblers vs recreational** - The IRS treats these very differently. If gambling is your primary income source, you may qualify as a professional gambler with different deduction rules (can deduct losses as business expenses rather than itemized deductions). But this comes with much stricter documentation requirements. 4. **Timing of documentation** - If you're scrambling to put together records for this year, start a simple system NOW for next year. Even a basic smartphone app or Excel spreadsheet updated after each session will save you major headaches. The most important thing is consistency and reasonableness. The IRS knows people gamble and lose money - they just want to see that you made a good faith effort to track it accurately.
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Connor O'Neill
•This is really helpful information! I had no idea about the casino host option - that could be a game changer for people who are regulars at specific casinos. Quick question about the professional vs recreational gambler distinction - how does the IRS actually determine this? Is it based on frequency of gambling, amounts won/lost, or whether you have other income sources? I'm asking because I know someone who plays poker pretty seriously (probably 20+ hours a week) but also has a regular day job. Would they potentially qualify as a professional gambler for tax purposes, or does having other employment automatically make you recreational? Also, regarding state tax implications - are there any states that are particularly favorable or unfavorable for gambling tax treatment? I'm in California and wondering if I should be aware of any specific state rules beyond the federal requirements. Thanks for sharing your professional insights!
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