What time zone determines the cutoff for the beginning/end of a tax year for 24/7 trading?
OK so I've been active in crypto and forex markets for about 3 years now, and I'm trying to figure out something important for my upcoming taxes. Since these markets are open 24/7/365, what time zone does the IRS actually use to determine whether a trade happened in 2024 or 2025? Like, if I make a sale of Bitcoin at 11:30 PM on December 31st in California (PST), but it's already January 1st, 2025 on the East Coast, which tax year would that count for? I'm trying to balance some capital gains/losses and need to know the exact cutoff. I've looked through IRS publications but can't find a clear answer about the time zone rules. Do they use your local time zone, EST (where the IRS is headquartered), or UTC for international markets? Thanks for any help!
19 comments


Zara Shah
The IRS generally considers transactions to have occurred in your local time zone - meaning the time zone where you're located when you execute the trade. This is sometimes referred to as the "where you are" rule. If you're physically in California and execute a crypto trade at 11:30 PM PST on December 31st, 2024, that would count as a 2024 transaction for tax purposes, even though it's already 2025 in other parts of the country or world. The IRS doesn't use a single universal time zone cutoff for all taxpayers across the country. That said, keeping good records is essential. Your trading platform might record timestamps in UTC or another time zone, so make sure you can document exactly when the transaction occurred in your local time if needed.
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Luca Bianchi
•So does this mean I could technically do a trade while physically in Hawaii at like 11:59pm on Dec 31 (where I'd be 5 hours behind EST) and it would count for the previous tax year even though it's already the next year for most of the country? Does the IRS actually check this stuff or just go by whatever date shows on your statements?
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Zara Shah
•Yes, if you're physically in Hawaii and execute a trade at 11:59 PM HST on December 31, that transaction would count for that tax year, even though it's already the next calendar year in most of the country. The IRS generally relies on the documentation you provide. Your trading records and statements are the primary evidence, so it's important that you have documentation showing when and where the transaction took place. Most platforms provide timestamps, but they might use UTC or another standardized time zone - you'd need to convert these to your local time zone for accurate reporting.
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GalacticGuardian
I was in a really similar situation last year and spent hours trying to figure this out! I eventually used taxr.ai (https://taxr.ai) to get clarity on this exact issue. The site analyzed my trading data and correctly categorized my transactions by tax year based on my local timezone. Their system automatically detected the timing discrepancies in my crypto transactions that happened near year-end and flagged which ones needed special attention. It also generated documentation that clearly showed which tax year each transaction belonged to according to IRS rules, which gave me peace of mind for filing.
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Nia Harris
•How does taxr.ai handle transactions if you're traveling? Like if I made trades while physically in different time zones during the last week of December? Does it track your location somehow or do you have to manually note where you were?
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Mateo Gonzalez
•Does it work with all exchanges? I use some pretty obscure platforms for certain altcoins and most tax software can't import from them correctly. Also wondering how it handles DeFi transactions which don't always have clear timestamps?
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GalacticGuardian
•For travelers, you'll need to indicate where you were physically located when making each trade - the system allows you to specify different time zones for different transactions rather than assuming all your activity happened in one place. This is really helpful if you're on the move during critical tax cutoff periods. For exchange compatibility, it handles all major exchanges plus most smaller ones too. I was surprised it could import from some of my more obscure platforms. For DeFi transactions, it has a special analysis tool that examines blockchain timestamps and converts them to your local time zone, though you may need to provide additional context for complex smart contract interactions.
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Mateo Gonzalez
Just wanted to follow up - I tried taxr.ai after asking about it here and it was actually really helpful with my situation. I had made trades while traveling between time zones during late December and early January, and was totally confused about which tax year they belonged to. The system let me specify exactly where I was for each transaction and automatically determined the correct tax year based on my local time at the moment of each trade. It even flagged a few transactions that were going to cost me extra in taxes if filed in the wrong year. The documentation it generated would definitely stand up to scrutiny if I ever got audited about this timing issue.
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Aisha Ali
If you're having trouble getting a straight answer from the IRS publications, you might want to try Claimyr (https://claimyr.com). I used them when I had a similar question that I couldn't get resolved through normal channels. They got me connected to an actual IRS agent in about 20 minutes instead of waiting on hold for hours. You can see how it works in this video: https://youtu.be/_kiP6q8DX5c - basically they hold your place in line and call you when an agent is about to answer. The IRS rep I spoke with confirmed that transactions are considered to occur in the taxpayer's local time zone where they were physically present when executing the trade.
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Ethan Moore
•Wait how is this even possible? I've tried calling the IRS like 5 times this month and couldn't get through. Is this some kind of paid service? How much does it cost? Seems like it would be cheaper to just ask my accountant but she's been useless with crypto questions.
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Yuki Nakamura
•This sounds super sketchy. Why would the IRS allow a third-party service to jump the queue? I've been calling them for weeks about an issue with my 2023 return and keep getting disconnected. If this actually works, it seems like it would be unfair to everyone else waiting their turn.
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Aisha Ali
•Yes, it's a paid service, but I'm not going to discuss pricing here - you can check their website for current rates. It was worth it to me because I needed an answer before filing my taxes and couldn't waste days trying to get through. They don't "jump the queue" - they actually wait on hold for you, then call you when they're about to connect with an agent. The system is completely legitimate and doesn't do anything improper. Think of it like having an assistant wait on hold for you. The IRS doesn't know or care who's waiting on the line, and when you get connected, you're the one speaking directly with the IRS agent. For complex tax questions like timing of crypto transactions, sometimes you need an official answer directly from the source.
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Yuki Nakamura
I have to eat my words and apologize for being skeptical about Claimyr. After posting my doubtful comment, I was desperate enough to try it since my tax deadline was approaching and I needed clarification on some crypto staking rewards that spanned the new year. The service actually worked exactly as advertised. I didn't have to sit on hold for hours - they called me when an IRS agent was ready to talk. The agent gave me clear guidance about using my local time zone for determining which tax year my staking rewards belonged in. Saved me a ton of stress and potentially prevented me from reporting incorrectly. Sometimes being wrong feels pretty good!
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StarSurfer
This is actually an interesting question that gets even more complicated with international trading. I work for a financial firm and our policy is to use UTC (Coordinated Universal Time) for all transaction timestamps internally, but then convert to the client's local time zone for tax reporting purposes. The IRS has been pretty consistent about using the taxpayer's local time zone as the determining factor. Makes me wonder though - could someone theoretically "time zone shop" by traveling to Hawaii or even international locations to get more favorable tax treatment for certain transactions? Probably not worth the effort but an interesting loophole.
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Carmen Reyes
•Could you in theory have a VPN set to a different time zone and claim that's where you were? Or does the IRS have ways to verify your physical location when you made trades? Just curious - not planning to try anything sketchy!
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StarSurfer
•Using a VPN wouldn't change your physical location - it would only mask your IP address. The tax rule is based on where you are physically located, not where your internet connection appears to be coming from. If you were audited, the IRS could request evidence of your location like travel records, receipts, cell phone GPS data, etc. While it's technically possible to gain some tax advantages by being in a different time zone during the year transition, the logistics and travel costs typically outweigh any potential tax benefits for most people. Plus, intentionally misrepresenting your location would constitute tax fraud, which carries serious penalties including potential criminal charges.
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Andre Moreau
Has anyone actually had the IRS question them about the time zone of a transaction? I've been trading crypto for years and report everything, but I've never been super precise about the exact time of day for transactions that happen near midnight on December 31st. I just assumed they wouldn't care about such a small detail.
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Zoe Christodoulou
•I've never been audited specifically about time zones, but I did have the IRS question some of my crypto transactions from 2022. They were more concerned with making sure I reported all transactions rather than the exact timing of them. But if you had a really large gain or loss right at year end, I could see them being pickier about exactly which year it belongs in.
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Andre Moreau
•Thanks for sharing your experience. That's kind of what I figured - they're probably more focused on making sure all transactions are reported rather than nitpicking about exactly which tax year a midnight transaction falls into. Still, I think I'll be more careful with my record-keeping this year just to be safe.
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