U.S. Crypto Investors Face Oct. 15 Tax Deadline for 2025 Returns

The Oct. 15, 2026 deadline is fast approaching for U.S. crypto investors who filed for an extension on their 2025 federal tax returns. While this extension grants additional time to file, it does not delay the payment of taxes owed, which were due on April 15, 2026. Late filings can result in monthly penalties, potentially reaching up to 25% of the unpaid tax, according to IRS guidance.

This filing season marks the first time many custodial brokers have reported 2025 digital-asset sales using the new Form 1099-DA. However, most of these forms only report gross proceeds and do not include the taxpayer’s cost basis, leaving investors responsible for calculating their own gains or losses.

Crypto investors must report various transactions, including sales, swaps, staking rewards, and payments, on their federal tax returns. The IRS emphasizes that simply receiving a Form 1099-DA is not a prerequisite for reporting taxable transactions. Taxpayers must report income, gains, and losses even if they do not receive such forms.

Missing the Oct. 15 deadline can result in separate filing penalties. The IRS imposes a failure-to-file penalty of 5% of unpaid tax for each month the return is late, capped at 25%. Additionally, interest continues to accrue on unpaid federal tax. Taxpayers who cannot pay the full amount are still encouraged to file their return to avoid further penalties.