Declaring Crypto Gains Late in Germany: When a Voluntary Disclosure Under Section 371 Still Prevents Prosecution

The information provided in this article is for informational purposes only and does not constitute financial advice. Cryptocurrency investments carry a high degree of risk. Always conduct your own research.From 2027 crypto service providers will report 2026 data to Germany's Federal Central Tax Office. If you never declared older gains, you should know when a voluntary disclosure still works and what makes it fail.If you failed to declare gains from Bitcoin or other crypto assets in earlier German tax returns, you face a question with a clear answer: a voluntary disclosure that exempts you from prosecution under section 371 of the German Fiscal Code only works for as long as the offence has not been discovered and none of the statutory blocking grounds applies. That window is currently getting shorter. The German Crypto Asset Tax Transparency Act has applied since January 1, 2026, and in the 2027 calendar year crypto service providers will transmit data for the 2026 reporting period to the Federal Central Tax Office for the first time. This article explains how a subsequent declaration works in practice, which years are still open at all, what causes a voluntary disclosure to fail...