Sync Your Portfolio
Connect from 800+ exchanges, wallets, and blockchains. API, CSV, or direct sync done in seconds.

Built for Spanish crypto investors. Compliant with AEAT rules.

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KoinX’s extensive integration with 800+ crypto exchanges makes calculating crypto taxes incredibly easy.
Connect from 800+ exchanges, wallets, and blockchains. API, CSV, or direct sync done in seconds.

KoinX auto-classifies every trade. Buy, sell, swap, staking, airdrops, DeFi, internal transfers and calculates gains automatically.

Get your Declaración de la Renta report instantly. Pay only when you're ready to download. No surprises.

It takes under 10 minutes
Rated 4.5/5 by over 10.5k users
The response was quick, which is rare in tax and financial services companies. The conversation was smooth, and they handled my issue well.
I was worried about managing transactions across multiple wallets and exchanges, from CEXs to Solana and Base. KoinX brought all the data into one place and made the process much easier. It also reduced a lot of work for my CA, especially for transactions and trading pairs that were hard to understand because they were in USD.
Really happy with the service. Everything was handled quickly and clearly. I’ll definitely be using their services again in the future.
KoinX team is responsive and knowledgeable about tax regulations. They also follow up properly and investigate any differences in starting and ending balances or profit and loss figures, either correcting them or clearly explaining the reason. I used KoinX with Bitget and had a good experience.
Very helpful service. I bought the plan for my crypto tax report and received it within minutes. The team was also very supportive and helpful with the tax filing process.
Had a really good experience with KoinX. The tax report was easy to generate, and whenever I had an issue, the support team responded quickly and sorted it out. Their customer service is excellent and makes the whole process much smoother.
It was the last day to file my ITR, and I had no idea how I would get it done in such a short time. KoinX really came through and completed the entire process in nearly 2 hours, helping me file on time and avoid the late filing fee. Really happy with the service.
This is my second year using KoinX, and the experience has been great both times. The team explained the tax calculations clearly and also suggested ways I could plan better for taxes next year. Really happy with the overall service. Special thanks to Arjun and Khushi for all their support.
Before KoinX, handling crypto clients involved a lot of back-and-forth, missing CSVs, transaction issues, and hours spent fixing mismatches. At one point, I even considered avoiding crypto cases altogether. KoinX has made the entire process much easier for both me and my team.
The reports are clear, easy to understand, and simple to explain to clients. Managing multiple crypto clients from one dashboard saves a lot of time, and generating reports is quick and smooth. KoinX has made crypto tax filing much easier for me as a CA.
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Sync all your wallets & exchanges
✨ Processing
Plug in your wallets and exchanges. Watch your portfolio come alive.
800+ Integrations
Direct API and CSV support for Binance, Coinbase, Kraken, Metamask, Bitpanda, and institutional custodians.




Internal Transfer Detection


Multiple Inventory Methods
Auto-LabellingAuto-Labeling for Web3
Automatically identifies Staking rewards, Airdrops, Minting fees, and LP entries across 50+ chains including Ethereum, Solana, and Polygon.
We don't just "calculate" taxes; we solve for the AEAT. KoinX is built with the specific logic required for Modelo 721.
Generate one-click reports ready for your asesor fiscal.

Our platform is packed with advanced features, including real-time market data, in-depth analysis, and reporting. It has also been cleverly designed to simplify and expediate the process of tax report generation.
Download Sample Reports
We never ask for your private keys. We only sync public data via read-only APIs.
Bank-level encryption and data privacy protocols to ensure your financial footprint remains confidential.
We use TLS for data in transit and AES-256 encryption at rest to keep your data secure and unreadable at every stage.
KoinX is a global crypto tax and accounting platform trusted by over 1.5 million investors across 100+ countries. It pulls transaction data from exchanges, wallets, and blockchains automatically, calculates your tax liability under local rules, and produces filing-ready reports. From spot trading to DeFi activity, KoinX handles the full complexity of crypto taxation in one place.
KoinX holds ISO 27001:2022 and SOC 2 Type II certifications and is fully GDPR compliant. It connects to your exchanges through read-only API access only, meaning it cannot move funds or access private keys under any circumstance. Your transaction data and personal information are encrypted using AES-256 at rest and TLS in transit throughout the entire process.
KoinX integrates with 800+ exchanges, wallets, and blockchains worldwide. Whether you trade on Binance, Coinbase, Kraken, Bitpanda, or use MetaMask for DeFi activity, KoinX connects to all of them via API or CSV import. Every transaction across all connected sources is automatically consolidated into a single, organized dashboard ready for tax calculation and reporting.
Yes. KoinX generates tax reports specifically engineered for Spanish investors under AEAT guidelines. The reports cover capital gains under IRPF savings tax brackets, crypto income events, derivatives activity, and full transaction-level records. Once generated, the report is structured to support your Declaración de la Renta filing and can be shared directly with your asesor fiscal.
Yes. KoinX produces detailed asset balance reports covering beginning and end of year holdings, which support the disclosures required under Modelo 721. If your foreign crypto holdings exceed €50,000 in total value, this report gives your tax advisor the structured data needed to complete the declaration accurately and on time before the filing deadline.
Yes. KoinX generates a complete tax report that covers all crypto activity required for your Declaración de la Renta. It separates capital gains from trading, income from staking and airdrops, and derivatives activity into clearly labeled sections. Your asesor fiscal can use this report directly to populate the relevant fields in Modelo 100 without needing to trace individual transactions manually.
Yes. Spanish tax law under Article 37.2 of the IRPF mandates the FIFO method for calculating capital gains on digital assets. KoinX applies FIFO as the default cost basis method for Spanish users, ensuring that gains and losses are calculated in the exact sequence required by the AEAT. This keeps your tax report legally compliant from the first transaction.
Yes. Once your KoinX tax report is generated, you can download it in PDF or Excel format and share it with your asesor fiscal immediately. It includes capital gains calculated under FIFO, a full income summary covering staking and airdrops, derivatives results, and transaction-level records, giving your tax advisor a complete, audit-ready document for your annual filing.
The Agencia Tributaria treats cryptocurrency as a financial asset, not legal tender. Gains from selling or exchanging crypto are taxed as savings income under IRPF at progressive rates between 19% and 28%. Income earned through mining, staking, or receiving crypto as payment is treated as general income and taxed at higher progressive rates reaching up to 47%.
Spain taxes crypto capital gains under progressive IRPF savings income brackets. The rates are 19% on the first €6,000 of gain, 21% on gains between €6,001 and €50,000, 23% on gains between €50,001 and €200,000, 27% on gains between €200,001 and €300,000, and 28% on any amount exceeding €300,000.
Yes. Capital losses from crypto can be offset against capital gains of the same type in the same tax year, reducing your overall IRPF savings income liability. If your total losses exceed your gains for the year, the remaining balance can be carried forward for up to four years. However, you may only deduct up to 25% of your net loss annually.
Yes. Spain imposes a wealth tax on individuals whose total net assets, including cryptocurrency, exceed €700,000. The applicable rate varies by autonomous community, ranging from 0.2% to 3.75%. Madrid is the only region that currently exempts residents, though those with assets above €2,000,000 must still submit a wealth tax return for informational purposes using Modelo 714.
Modelo 721 is a Spanish tax declaration form introduced on January 1, 2023, specifically for reporting cryptocurrency and crypto assets held on platforms outside of Spain. Any Spanish tax resident whose foreign crypto holdings exceed €50,000 in total value is required to file it annually. It replaced the earlier Modelo 720 obligation that previously applied to virtual assets held abroad.
Yes. The AEAT actively monitors crypto activity through multiple channels. Crypto asset service providers are required to report transactions to the Spanish Tax Departments. The EU-wide DAC8 directive will further legally require all crypto asset service providers to report customer transactions to member state tax authorities. The AEAT has also sent letters to investors requesting multi-year transaction histories directly.
No more spreadsheets. Just clean, AEAT-ready reports in minutes.
