Millions of U.S. taxpayers who requested a filing extension this spring are running out of time. The extended deadline to file a 2024 federal income tax return is October 15, and it applies to anyone who traded, sold, or earned cryptocurrency during the year and reported that activity to the IRS.

Who the Oct. 15 crypto tax deadline applies to

Earlier this year, millions of U.S. taxpayers requested an automatic six-month extension to file their 2024 federal income tax returns. That extension moved the original April 15 deadline to October 15. According to IRS guidance, taxpayers who traded, sold, or earned cryptocurrency in 2024 and requested the extension must treat October 15 as their final filing deadline.

One point is often misunderstood: a filing extension is not a payment extension. Taxes owed on 2024 crypto gains were still due in April, even with the extension in place. Missing October 15 for the return itself can trigger late-filing penalties, which accrue the longer a return remains unfiled, on top of any unpaid balance.

The IRS treats cryptocurrency as property, not currency — a position it first set out in Notice 2014-21, its foundational guidance on virtual currency. That classification means every sale, trade, or spend of crypto constitutes a taxable event, and the resulting gains or losses must be reported on the federal return, the same way the sale of stocks or real estate is reported. The IRS guidance on virtual currencies outlines which transactions trigger a reporting requirement, and the digital asset question on page one of Form 1040 puts the issue directly in front of every federal filer.

What crypto taxpayers should prepare before filing

With October 15 days away, gathering the right records is the most important step. Here is what to have on hand before sitting down to file, whether independently or with a tax preparer:

• Transaction history. Download complete trade and transfer records from every exchange or wallet used in 2024. Most platforms offer a CSV export or a built-in tax report tool.
• Cost basis records. Know what was originally paid for each asset sold or traded. Without cost basis, gains and losses cannot be calculated accurately.
• Income records. Crypto earned through staking, mining, airdrops, or as payment for services is typically taxable at its fair market value on the date received.
• DeFi and NFT activity. Transactions on decentralized platforms and NFT sales also generate taxable events, so records for these should be gathered separately where they apply.

For taxpayers whose activity involves many transactions across multiple platforms, dedicated crypto tax software can help consolidate records before filing. These tools can import data directly and calculate gains automatically.

How to stay on track for Oct. 15

With the deadline this week, there is little time to spare. A simple three-step approach can help close out the process cleanly:

1. Confirm that all transaction records are complete and match what exchanges reported to the IRS on Form 1099.
2. Review the return for any crypto-related lines, including Schedule D for capital gains and Form 8949 for individual transactions.
3. Submit electronically if possible, since e-filing processes faster and produces a confirmation that the return was received.

Record-keeping is also entering a more standardized phase. Under broker reporting rules the IRS finalized in 2024, exchanges and other brokers will report digital asset sale proceeds on a new Form 1099-DA beginning with 2025 transactions — making the records assembled for this filing a useful baseline for cross-checking future returns.

One common mistake is assuming that only large gains need to be reported. Even small trades, crypto-to-crypto swaps, or purchases made with crypto as taxable events in the U.S., and overlooking minor transactions is a frequent source of discrepancies.

For taxpayers whose 2024 crypto activity was complex — such as running a validator node, participating in liquidity pools, or receiving tokens from multiple sources — speaking with a qualified tax professional before October 15 is worth the cost. Complex situations are also where the IRS extension guidance is most relevant to review alongside a professional.

A shifting regulatory backdrop

The regulatory environment around crypto and taxes continues to evolve. Recent legal challenges over crypto banking rules and ongoing SEC reviews of crypto products show that U.S. regulators are paying close attention to the industry. Tax compliance is one area where following the rules closely can protect taxpayers from future scrutiny.

The practical takeaway: anyone who held or traded crypto in 2024 and filed for an extension should check their records today. October 15 is the hard stop, and filing on time — even if imperfect — is better than missing the deadline entirely.

Disclaimer: This article is for informational purposes only and does not constitute financial or investment advice. Cryptocurrency and digital asset markets carry significant risk. Always do your own research before making decisions.