Tax Authority Inquiry
About Your Crypto?
A letter from the tax authority about your crypto activities? No reason to panic, but a reason to act: here is how to respond correctly, step by step.
30 min · Free · No commitment
Robert & Johannes · personally review your data
Why the Tax Authority Asks About Crypto
The tax authority has various ways to learn about your crypto activities. These triggers most commonly lead to a formal inquiry:
DAC8 Data Exchange
From 2026, crypto transactions are recorded for reporting to tax authorities, with the first report following in 2027. The tax authority cross-references this data with your tax return. How DAC8 reports exactly →
Bank Transactions
Larger deposits from crypto exchanges to your bank account can raise flags. Banks are required to report suspicious transactions.
Incomplete Tax Return
When crypto income is missing from your tax return or statements are contradictory, the tax authority requests an explanation.
How to Respond to a Tax Authority Inquiry Correctly
The correct sequence is critical. Follow these steps:
Read the letter
What is asked, what deadline, what time period?
Contact a tax advisor
Engage a tax advisor before taking any action on your own
Prepare documentation
Prepare the history across all exchanges and wallets
Respond on time
Submit a complete response or request a deadline extension
Important: coordinate your response to a tax authority inquiry with your tax advisor. The tax assessment belongs in their hands; TX-Partner delivers the complete data foundation.
Mistakes You Should Avoid
Answering without structure
Answer precisely what is specifically being asked, complete and traceable. Coordinate the scope of your response with your tax advisor.
Providing too little
Incomplete responses lead to follow-up inquiries and prolong the process. Or worse: the tax authority estimates your income.
Missing the deadline
Letting the deadline pass is the biggest mistake. It is better to request a deadline extension.
Going in without preparation
A tax authority inquiry is a formal proceeding. The tax assessment belongs in your tax advisor's hands; the prepared data foundation comes from TX-Partner.
What TX-Partner Prepares for Your Response
TX-Partner is the independent partner for crypto accounting: no legal or tax advice, but the data foundation your tax advisor can work with immediately. The 6-question catalog from real inquiries is in the blog Tax Authority Asks About Crypto.
Transaction History
Complete documentation of all crypto transactions for the requested time period. Chronological, with fiat values, across all wallets and exchanges.
Reconstruct Missing Data
When exchange exports are no longer available, TX-Partner reconstructs the history from on-chain data.
Tax-Advisor-Ready
The documentation is structured so that your tax advisor can directly amend the tax return or respond to the inquiry.
Inquiry Response professionally answer.
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