Tax Evasion in Bitcoin and Other Cryptocurrency Trading: Risks, Penalties & Tips for Prevention

When Does Trading Bitcoin and Other Cryptocurrencies Become Taxable?

Trading cryptocurrencies falls under the Income Tax Act (§ 22 No. 2, § 23 EStG) and is classified as a private disposal transaction. The decisive factors are:

• • How long was the coin held?
  • Was a profit realized?
  • Is the profit below or above the exemption limit?

Exemption Limit for Private Disposal Transactions

• • 1-year holding period: Tax-free if more than 12 months pass between purchase and sale.
  • Sale within 12 months: Profit is taxable.
  • Exemption limit: If the profit is below €600 per year, it remains tax-free (§ 23 para. 3 sentence 5 EStG ).
  • Attention: If the €600 limit is exceeded, the entire profit becomes taxable, not just the portion above it.

More Complex Cases: Staking, Lending, Mining, Airdrops

Not every transaction involving Bitcoin and other cryptocurrencies automatically constitutes a private disposal transaction:

• • Staking & Lending: Income from these activities may be taxable as miscellaneous income (§ 22 No. 3 EStG).
  • Mining: Income is generally classified as commercial.
  • Airdrops: May be classified as gifts or income, depending on the circumstances.
  • NFTs & DeFi: New gray areas – particularly subject to intensive scrutiny by tax authorities.

Anyone providing inaccurate or incomplete information in these areas quickly risks being accused of tax evasion.

Tax Evasion with Bitcoin & Co.: What Are the Consequences?

If crypto profits are intentionally or negligently not declared, this may be prosecuted as tax evasion (§ 370 AO) or negligent tax reduction (§ 378 AO).

Possible Sanctions:

• • Back payment of evaded tax amounts
  • 6% interest per year on evaded amounts (§ 233a AO)
  • Fines or imprisonment up to 5 years (in serious cases up to 10 years)
  • Search, account freezing, arrest
  • Negative entries in criminal records (particularly threatening to the livelihood of self-employed individuals)

Even an incorrect entry in the tax return can be sufficient to trigger proceedings. Tax authorities increasingly rely on blockchain analysis and international cooperation.

Voluntary Disclosure: Last Opportunity for Exemption from Prosecution

A voluntary disclosure can protect against criminal prosecution, but only if:

• • The voluntary disclosure is made in time (before the tax authority or tax investigation unit becomes aware of the tax evasion)
  • The voluntary disclosure is complete and accurate (disclosing all cryptocurrencies, transactions & wallets)
  • retroactive correct taxation is made

The requirements are stringent. Formal errors or incomplete information render the voluntary disclosure ineffective.

Important: No voluntary disclosure without an attorney experienced in tax law – we assess whether it is advisable and possible in individual cases.

Common Errors with Crypto Profits

Type of Error	Possible Consequence
No declaration in tax return	Tax evasion, investigation proceedings
Incorrect holding period stated	Tax reduction, back payment + interest
Wallets not fully recorded	Criminal relevance in case of concealment
Crypto to fiat not documented	Problems with proof & valuation

Case Study: Investigations into Past Cryptocurrency Transactions

Recently, cases have increased in which tax offices or tax investigation units demand detailed information on cryptocurrency transactions, sometimes retroactively for periods before 2018. The authorities often rely on so-called control materials (e.g., exchange data or international information).

A typical example: A taxpayer is required to provide detailed information on all investments in Bitcoin and other cryptocurrencies for the years 2015 to 2017. The following are requested:

• • a complete inventory of all wallets and platforms,
  • information on trading accounts used,
  • transaction overviews (CSV exports),
  • and proof of any taxable disposals.

The background: Cryptocurrencies are classified for tax purposes as other economic assets, the sale of which within the one-year speculation period constitutes a private disposal transaction (§ 23 EStG). Anyone who does not declare income from such transactions risks assessments (§ 162 AO) or even tax criminal proceedings (§ 370 AO).

What Does This Mean for Those Affected?

“I thought this no longer concerned me – that was back in 2016…” Precisely such cases are currently coming under increased scrutiny by tax offices and tax investigation units.

Even transactions with Bitcoin or other cryptocurrencies from several years ago, such as from 2015 to 2017, can still be tax-relevant today and subject to criminal prosecution. Tax offices increasingly access control material from crypto exchanges to examine previously undeclared disposal transactions.

The situation becomes particularly critical when no tax returns have been filed or documentation is missing. In such cases, assessments (§ 162 AO) or even tax criminal proceedings (§ 370 AO) are threatened.

Our advice: Those who act early can limit risks and actively manage the proceedings.

How We Support You

Our firm specializes in tax criminal law and economic criminal law, particularly in the area of digital assets, Bitcoin and other cryptocurrencies.

We support individuals and business owners with:

• • Review of tax obligations and risks
  • Preparation or correction of your tax return
  • Defense in tax and criminal proceedings
  • Preparation & execution of voluntary disclosure
  • Structuring of your investments (including international)

We provide well-founded, preventive advice and defend in critical situations – nationwide and discreetly. Whether consultation, representation, or defense: you benefit from our extensive experience with blockchain forensics, tax offices, and tax investigation units.