Summary:

Internal Revenue Service study shows only 6.5% of taxpayers reported crypto sales between 2013-2021.
Estimated 31-54 million Americans own crypto, pointing to a large reporting gap.
Unreported crypto activity may cost over $50 billion in lost tax revenue annually.
New Form 1099-DA rules will require brokers to report crypto sales directly.
Enforcement is increasing, with audits, AI tracking, and legal actions on the rise.

A new study from the Internal Revenue Service(IRS) is putting numbers behind something long suspected - most crypto activity isn't being reported for tax purposes. Researchers analyzed more than 1.3 billion tax returns filed between 2013 and 2021. Out of that massive dataset, only 17.4 million individuals reported crypto sales. That works out to just 6.5% of taxpayers. On its own, that number might not seem alarming. But when placed next to estimates of crypto ownership, the gap becomes hard to ignore. Surveys suggest that between 31 million and 54 million Americans hold some form of cryptocurrency. That means a large share of users may not be reporting taxable activity at all.

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Even at the higher end of compliance estimates, only around half of crypto owners appear to report their transactions. At the lower end, the number drops much further. The early years were even more extreme. Between 2013 and 2015, crypto reporting was almost nonexistent, with fewer than 1,000 people per year declaring earnings in some estimates. Activity picked up as crypto markets grew, but reporting never kept pace. By 2021, about 6.5 million tax returns included crypto sales. That's a noticeable increase, but still far below what on-chain activity and ownership data would suggest. This disconnect points to a structural gap between how crypto is used and how it is reported.

Why So Many Crypto Users Don't Report

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Accroding to the report, those who do tend to be younger, with the average age around 34 by 2021. They also report lower taxable income compared to the general population. Their behavior often resembles retail trading patterns, similar to meme stock activity. This matters because it suggests that many crypto users are not deeply engaged with tax planning. They are trading casually, sometimes frequently, without fully understanding the tax implications and that lack of understanding is backed by separate data.

A recent survey conducted by Coinbase and CoinTracker highlights how widespread confusion really is. Nearly half of respondents did not know that selling cryptocurrency is a taxable event. A quarter believed that simply moving assets between their own wallets could trigger taxes. That confusion extends to more complex activities. Stablecoin conversions, DeFi transactions, staking rewards, and even gas fees can all have tax implications. But many users either overlook them or don't realize they count. Lawrence Zlatkin, Vice President of Tax at Coinbase, summed up the situation clearly:

" The story this data tells is one of uncertainty. Users are struggling to navigate the complexities of crypto taxation, which is why it's so important for us to help bridge that knowledge gap. With the resources we've made available this tax season, our goal is to help our users reconcile unknown cost basis data, understand their requirements, and file accurately with confidence." Source

There are also behavioral factors at play. Some users may intentionally avoid reporting. Others may assume that crypto activity is harder for authorities to track. But that assumption is becoming less reliable.

Enforcement Tightens as the Gap Grows

The reporting gap has real consequences. The IRS estimates that unreported crypto activity may account for more than $50 billion in lost tax revenue each year. That figure sits within a broader annual tax gap of roughly $688 billion. As crypto adoption increases, that gap is likely to grow unless reporting improves. To address this, regulators are shifting from guidance to enforcement. The biggest change comes with Form 1099-DA. Under this new rule, crypto brokers must report transaction data directly to the IRS, including gross proceeds from sales. This brings crypto closer to the reporting standards already used for stocks, where brokers file Form 1099-B.

In simple terms, the system is moving from self-reporting to third-party reporting. That change reduces the room for underreporting. It also increases the likelihood that discrepancies will be flagged automatically. Beyond forms, the IRS is also expanding its use of blockchain analytics. Partnerships with firms like Chainalysis allow the agency to track transaction flows and connect on-chain activity to real-world identities. Artificial intelligence tools are being used to match reported income with blockchain data. When those two don't align, it can trigger audits or further investigation. Enforcement is already moving beyond warnings. The first cases focused purely on crypto tax evasion began appearing in 2024 and 2025. Some involved millions of dollars in unreported gains. Penalties vary depending on intent. They can include fines, interest on unpaid taxes, and in more serious cases, criminal charges.

A Global Problem, Not Just a US Issue

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The compliance gap is not limited to the United States. According to global estimates, only about 1.76% of crypto users worldwide report their holdings to tax authorities. That's roughly 5.3 million people out of an estimated 301 million crypto owners. Some countries show higher compliance rates. Japan leads at nearly 20%, followed by Norway and Germany. But even in those regions, a large portion of users still do not report. In others, the gap is even wider. Studies suggest that in some Nordic countries, more than 90% of crypto holders may not be reporting their activity. This suggests the issue is about enforcement, education and clarity. Crypto taxation rules are still evolving in many jurisdictions, and users often struggle to keep up.

What Comes Next for Crypto Tax Reporting

The data from the IRS study reflects a past where reporting was largely optional in practice, even if required by law. That period is ending, With Form 1099-DA coming into effect and enforcement tools becoming more advanced, the environment is changing quickly. At the same time, the complexity of crypto taxation remains a challenge. From simple trades to advanced DeFi interactions, the rules are not always easy to follow. For investors, the takeaway is becoming clearer that reporting crypto activity is no longer something that can be easily overlooked.