Everything you need to know about professional crypto documentation and TX-Partner.
TX-Partner is a professional crypto documentation service for Austria and Germany. In our experience working with 500+ portfolios, we resolve error messages in tax tools like Blockpit and CoinTracking, fix incorrect balances, and conduct on-chain research to fill data gaps.
We prepare your crypto history. documented to the TX Documentation Standard. so your tax report or proof of funds holds up under scrutiny.
No. TX-Partner is a premium documentation service, not a licensed tax advisor. We prepare the data foundation, complete, traceable, and technically accurate, so tax advisors and crypto tax tools can work with it error-free.
In practice, this means your advisor calculates tax under § 27a EStG (Austria) or § 23 EStG (Germany) on a correct basis, not on a defective export. We are happy to recommend specialized partners from our B2B & Partner network or contact us directly.
TX-Partner is for crypto investors whose crypto documentation is incomplete or incorrect, typically those with 3+ years of history, significant DeFi or NFT activity, or unresolved error messages in Blockpit or CoinTracking.
We particularly often help individuals with extensive on-chain activity, multi-exchange traders (10+ exchanges), and NFT traders. We also serve tax firms needing white-label crypto documentation support for their clients.
Crypto documentation is the systematic, complete, and technically accurate preparation of all crypto transactions for tax reports, proof of funds, and compliance audits.
TX-Partner documents according to the TX Documentation Standard, a proprietary 4-pillar framework covering Completeness, Traceability, Technical Accuracy, and Long-term Usability. In our experience, most portfolios with DeFi activity or 3+ exchanges have documentation gaps that cause Blockpit or CoinTracking to calculate incorrect tax results.
The TX Documentation Standard is TX-Partner's proprietary framework for audit-proof crypto documentation, built on four pillars:
No, that is exactly what the free Documentation Check is for. We analyze your data systematically and pinpoint where and why problems occur, even when your crypto tax tool looks superficially fine.
In our experience, roughly half of portfolios with hidden errors show no obvious red warnings in Blockpit or CoinTracking until the final tax report is generated.
Our prices are individual and based on the actual effort required: number of transactions, exchanges, on-chain complexity, and years of history to reconstruct. The initial Documentation Check is 100% free.
After the check, you receive a transparent fixed-price quote with no hidden costs. For urgent single questions, we also offer FAST_LANE consultations at €150 / 30 min.
No. Never. TX-Partner works exclusively with read-only data: CSV exports, API read-only keys (without withdrawal rights), and public wallet addresses.
We never request passwords, private keys, seed phrases, or account login access. Your crypto assets remain 100% under your control throughout the entire process.
Yes. DeFi documentation is our core specialty. We regularly see portfolios where standard tax tools miscategorize 30–50% of DeFi transactions, particularly DEX swaps, liquidity pool positions, and yield farming rewards.
We analyze smart contract interactions directly on-chain and document every step with the precision required under § 27a EStG (Austria) and § 23 EStG (Germany).
We document all NFT operations (mints, sales, transfers, royalties) and all staking types: native staking, liquid staking, and DeFi yield positions. Rewards are correctly categorized in their tax context.
Under § 27a EStG (Austria), staking income is treated as other income; in Germany (§ 23 EStG), categorization depends on the staking model. We ensure each reward is documented with the correct timestamp and fair market value. All services overview.
Blockpit errors , including red warnings, missing transactions, balance mismatches almost always stem from incomplete data imports or missing on-chain information.
In our experience, the most common root causes are missing DeFi transactions, cross-chain transfers documented on only one side, and airdrop entries without cost basis. We analyze your raw data, identify every error source, and prepare the data to be fully Blockpit-compatible with zero unexplained gaps.
We regularly see three categories of CoinTracking errors: negative balances (caused by missing import data from one side of a transfer), duplicate transactions (common with overlapping API and CSV imports), and incorrect categorizations (especially for DeFi swaps and staking rewards).
We clean up the full transaction history, correct categorizations according to Austrian and German tax law, and ensure CoinTracking processes all operations correctly before you hand data to your tax advisor.
Tax advisors calculate your tax liability. but they need a correct data foundation to do so. When crypto documentation is incomplete, tools like Blockpit and CoinTracking systematically generate tax-disadvantageous results: phantom gains, incorrect cost bases, or missing deductions.
TX-Partner cleans and completes this data layer first, so your advisor can apply § 27a EStG (Austria) or § 23 EStG (Germany) to accurate numbers and calculate the lowest legally correct tax liability.
Yes. Every documentation we deliver is built to withstand a tax authority review, not just today, but 5 to 7 years from now, which is the standard audit horizon. Should the tax authority question specific transactions, TX-Partner provides detailed on-chain derivations, blockchain explorer references, and written explanations.
With DAC8 reporting mandatory from 01.01.2026, audit-ready documentation is no longer optional. Learn more: Tax Authority Crypto Inquiry.
DAC8 (EU Directive 2023/2226) requires all regulated crypto exchanges to automatically report transaction data to national tax authorities, effective from 01.01.2026. This affects every EU citizen active on regulated exchanges.
Tax authorities will automatically receive your exchange transaction history from 2026. TX-Partner's key insight: exchanges only report their own data. Your DeFi activities, wallet transfers, and DEX transactions remain your responsibility. and any discrepancy between exchange reports and your tax return will trigger automatic inquiries. Clean crypto documentation is now essential.
All regulated crypto exchanges operating in the EU must report under DAC8 from 01.01.2026. This includes Coinbase, Kraken, Bitvavo, Bitpanda, and any exchange licensed to serve EU customers, including international platforms like Binance operating under EU MiCA licenses.
DeFi protocols and decentralized exchanges (DEX) are not covered by DAC8, but their on-chain transactions are publicly visible. Key implication: tax authorities receive CEX data automatically, but not your full crypto history. making complete self-documentation of DeFi and wallet activity critical. More about DAC8.
Typical processing times are 2 to 6 weeks, depending on portfolio complexity.
Simple portfolios, up to 3 exchanges, no DeFi, few years of history can be completed in 1 to 2 weeks. Complex portfolios with DeFi activity, NFTs, multi-chain transactions across 10+ exchanges, or missing historical data require 4 to 6 weeks. In our experience, portfolios active since 2017 or earlier consistently require the full 6 weeks due to legacy CEX data retrieval challenges.
After the free Documentation Check, you receive a realistic time estimate for your specific case.
Missing transactions are one of the most common problems we encounter, particularly for crypto history predating 2019, where exchanges have deleted export data or gone bankrupt (FTX, Celsius, etc.). TX-Partner uses on-chain research and blockchain explorers to reconstruct missing data directly from the ledger.
For CEX data, we request historical exports from exchanges. If specific transactions are genuinely unverifiable, we document this transparently with a written explanation. which is the correct approach under both Austrian and German tax law. Completeness is a goal, not a prerequisite for getting started. How we reconstruct crypto histories.
Yes. TX-Partner works with historical crypto data going back to 2011, whether from 2014, 2018, or any year since. On-chain data is permanently available as long as the blockchain exists, making wallet-based reconstruction reliable.
The challenge lies with centralized exchange data: exchanges sometimes delete old exports or are no longer accessible (FTX, Celsius, Mt. Gox). In these cases, we use wallet addresses and blockchain explorers to reconstruct the transaction history. We regularly work on retroactive documentation covering 5 to 10 years of crypto history.
Yes. TX-Partner integrates directly into tax advisor workflows. We deliver crypto documentation in a format that Blockpit, CoinTracking, and other tools can process without further cleanup, ready for the advisor to apply § 27a EStG (Austria) or § 23 EStG (Germany) immediately.
We also offer white-label services for tax firms that want to support crypto clients without building in-house blockchain expertise. All services overview. If you do not yet have a tax advisor, we are happy to recommend specialists from our network.
"Technically correct" means every DeFi transaction is documented exactly as it occurs on the blockchain, not as a tax tool interprets it. In our experience, most tax tools misinterpret DeFi transactions by capturing only the visible token flow and missing internal smart contract events.
Example: a single liquidity pool deposit involves multiple token transfers, an LP token minting event, and potentially a fee deduction, all within one blockchain transaction. Tools that only see the surface-level transfer produce incorrect balances and phantom gains. TX-Partner analyzes smart contract interactions directly and documents every step to prevent this.
Yes. TX-Partner is based in Austria and serves clients across the DACH region and broader Europe. Our primary expertise covers Austrian tax law (§ 27a EStG) and German tax law (§ 23 EStG).
The technical crypto documentation. reconstructing transactions, fixing tool errors, standardizing data. is identical regardless of jurisdiction. Country-specific tax assessment (holding periods, exemption thresholds, income categorization) is always handled by your local tax advisor, who receives our documentation as a clean, ready-to-use foundation.
The initial Documentation Check is 100% free and non-binding: a 30-minute call in which we analyze your situation and show you exactly where problems lie. Small corrections can often be resolved directly in this call.
The actual crypto documentation is individually priced based on complexity and effort. number of transactions, exchanges, years of history, and on-chain activity. For urgent single questions, we also offer FAST_LANE consultations at €150 / 30 min. Specialized services like proof of funds are quoted separately. After the Documentation Check, you receive a transparent fixed-price quote with no hidden costs.
No. Never. We never, TX-Partner works exclusively with read-only data: CSV exports, API read-only keys (without withdrawal rights), and public wallet addresses.
We never request passwords, private keys, seed phrases, or any form of account login access. This read-only model is a foundational principle of our service: your crypto assets remain 100% under your control throughout the entire documentation process. How TX-Partner works.
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