Data Preparation for Crypto Transactions: The Basis for Tax Compliance in Germany
Crypto transactions generate huge amounts of data – often confusing, sometimes contradictory, and virtually unusable without professional processing. This is exactly where we come in: we make your crypto data transparent, structured, and legally compliant – providing a reliable basis for tax and legal decisions.
Transaction data for crypto-related tax returns
We prepare your transaction data in accordance with German legal requirements and provide the necessary tax evaluations for both private income tax returns and corporate income tax returns. For our commercial crypto traders, we also use our proven accounting software CoinRacoon to prepare accurate crypto accounting for DATEV.
Data preparation for voluntary disclosures and subsequent tax declarations
Correct and complete data preparation is of central importance, especially for voluntary disclosures: The tax results arising from the analysis of your crypto transactions are decisive for the effectiveness of the voluntary disclosure in Germany – and thus for the hoped-for exemption from punishment. Incorrect or incomplete information can jeopardize the exemption from punishment. We ensure that your data is prepared in a legally compliant and traceable manner.
Certificate of origin of assets for banks, financial service providers, and authorities
Verifiable proof of origin is essential today – especially when cashing out cryptocurrencies and subsequently transferring them to bank accounts. Banks are also increasingly requiring complete documentation of the origin of funds when establishing new banking relationships as part of compliance checks during onboarding as a new customer. We support you in presenting your crypto transactions in a transparent and audit-proof manner – both technically and legally.
Refuting criminal allegations, e.g. in cases of suspected money laundering
Criminal allegations in connection with cryptocurrencies can be made very quickly and often automatically. In practice, banks report suspicious transactions directly to the Financial Intelligence Unit (FIU) – for example, in the case of unusual deposits, wallet transfers, or withdrawals. The FIU, in turn, regularly informs the public prosecutor's offices and tax authorities, which leads to preliminary investigations or tax audits.
Clean, traceable, and technically sound processing of your crypto transaction data is therefore essential in order to refute such allegations objectively and to present your position to the investigating authorities in a clear and transparent manner.
Our clients in data processing
Our clients are as diverse as the crypto world itself. We advise, among others:
- High net worth individuals and crypto investors, including clients with crypto assets in the hundreds of millions
- NFT investors who have made millions with digital assets such as Cryptopunks
- Private individuals who need assistance with tax classification and documentation
- Foundations and limited liability companies that hold or receive crypto assets
- Bank customers and customers of crypto exchanges who need proof of origin for their crypto transactions, for example, for submission during standard compliance checks
- Clients with particularly complex transaction histories (lost coins, victims of scams/fraud, DeFi transactions, insolvent exchanges, unclear origin, contact with incriminated wallets, mixers, etc.)
How does data preparation work in the field of crypto?
For data preparation, our blockchain analysts use their technical expertise to rely on leading software solutions such as CoinTracking and other highly specialized analysis tools and databases, which are also used by investigative authorities and financial service providers, to efficiently record, analyze, and classify your transaction history. However, we are also happy to help you with other software tools if you already use software independently and prefer to continue doing so. Our analysts have sufficient experience with most of the typical analysis tools available on the market.
The result of our data preparation is a final handover of the prepared data to our tax advisors and lawyers. This interdisciplinary collaboration guarantees you legally compliant and technically sound data preparation – tailored to your individual situation.
Why is WINHELLER the right partner for data preparation?
As one of the leading law firms for crypto and tax law, we offer you:
- Many years of experience in providing tax and legal advice to crypto investors
- Technical expertise thanks to our own blockchain analysts
- Legal certainty through close integration of technology, tax law, and criminal law
- Efficiency and transparency through structured processes and clear communication
- Further legal and tax advice based on the data preparation carried out
Our services in data preparation for crypto transactions in Germany
- Import and consolidation of your transaction data via API, CSV, or wallet addresses
- Analysis and plausibility check of your database
- Manual adjustments and corrections to the database
- Creation of crypto tax reports and income determination for relevant assessment periods
- Risk analysis of your crypto transactions with regard to suspicious wallets with which your wallets have been in contact
- Final report for submission to our tax advisors and lawyers specializing in crypto issues
- Creation of accounting entries for tax and balance sheet processing (CoinRacoon)
Our blockchain analysts for data preparation
Transform your confusing crypto data into a legally compliant basis for tax, banking, and authorities. Contact us now for professional data preparation and ensure full transparency and legal certainty. You can reach us by phone at +49 69 76 75 77 80 28 or by e-mail at info@winheller.com.
Nelakshan Elangeswaran
Tax Accountant, Certified Crypto Finance Expert
Patrick Wieber
Taxation and Auditing (B.A.), Certified Crypto Finance Expert
Do you need support?
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Or give us a call: +49 69 76 75 77 85 28