Prepare for DAC8: Get Your Crypto Trades in Order Before 2026 Reporting

Prepare for DAC8: Get Your Crypto Trades in Order Before 2026 Reporting

Prepare for DAC8: Get Your Crypto Trades in Order Before 2026 Reporting

DAC8 won’t change how crypto is taxed in Portugal, but starting with the 2026 tax year (first reports sent in 2027) exchanges will share trading data with Finanças..

Thomas Maas

Oct 1, 2025

Newsletter

Newsletter

Newsletter

Heads-up: from the 2026 tax year onward, exchanges and service providers will submit your trading history to the Portuguese authorities under DAC8. The rules for taxation don’t change—what changes is the automatic reporting and cross-checking against your IRS filing. If your 2023–2025 records are messy (DeFi, closed exchanges, missing logs), this is the moment to tidy up before the new regime bites.

1) Crypto-friendly bank account (client feedback on Millennium BCP)
Several clients reported smoother fiat inflows from exchanges after proactively telling Millennium BCP they hold crypto, which may place you on an internal list to reduce flagging. This is anecdotal—confirm directly with your branch and proceed with caution.

2) DAC8: what changes (and what doesn’t)

  • What changes: Starting with activity in 2026, exchanges will send your trading data to Finanças. The first report is due in 2027 (covering tax year 2026). Expect easier cross-checks between your IRS return and exchange data.

  • What doesn’t change: Tax rules remain the same—DAC8 is about reporting, not a new tax.

3) Why 2025 matters
2025 is the last year you can file an IRS return without authorities being able to automatically cross-verify your crypto data via DAC8. If you’re a heavy DeFi user or “degen” and have gaps in your history, use 2025 to reconcile records and prepare a clean base for 2026+.

4) Practical “clean-slate” tip (not financial or legal advice)
If you have long-held assets but messy records (e.g., some exchanges closed), consider selling to EUR in 2025 to realize the historical gain, report it on your 2025 IRS, and then buy back the same day. This documents the gain and gives you a clear, auditable starting point heading into the DAC8 era. Assess costs, spreads, and your personal situation before acting.

5) IRS 2025 filing window
Plan ahead: IRS 2025 is filed in April 2026 (standard window). If you haven’t worked with us before and want help, ask to be added to our 2026 IRS mailing list so you don’t miss any deadlines.

Get your trade logs, screenshots, and summaries in order now, consider the clean-slate approach if records are incomplete, and set a reminder for April 2026 filing. For updates and tools as DAC8 approaches, follow @cryptaxpt on Instagram, TikTok, LinkedIn, and X, or reach us via cryptotaxesportugal.com. (This post is informational; not financial or legal advice.)

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Ready to file your IRS with confidence in Portugal?

From trading to staking and NFTs, we’ll reconcile everything and optimize your bill—fully compliant, audit-ready.

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Ready to file your IRS with confidence in Portugal?

From trading to staking and NFTs, we’ll reconcile everything and optimize your bill—fully compliant, audit-ready.

grid image

Ready to file your IRS with confidence in Portugal?

From trading to staking and NFTs, we’ll reconcile everything and optimize your bill—fully compliant, audit-ready.