Crypto tax manager in Spain: portfolio app, accountant or crypto tax specialist?

If you search for someone to manage your crypto taxes in Spain, you can end up with three very different things: an app to track your portfolio, the gestoría (local accounting firm) that does your usual tax return, or a tax specialist focused on crypto. In search results they look alike, but they do not solve the same problem, and choosing badly tends to show in your tax return: sales that never happened, rewards with zero cost basis or a tax bill much higher than it should be.

In this guide we explain what each one does, where each one falls short with the Spanish tax agency (Hacienda) and what to check before you hire. If what you need is someone to take care of your crypto in your tax return, that is what we do at our crypto tax advisory firm.

The portfolio app (tracker)

Koinly, CoinTracking, Delta, CoinStats and similar. You connect your exchanges and wallets, and the app shows you your portfolio in real time. The more tax-oriented ones also produce a gains and losses report.

They are useful and cheap, and for tracking your portfolio they are the best option. But they are not an advisor: they apply automatic rules to data that often arrives incomplete, and they do not stand behind the result.

Your usual gestoría

The firm that does your tax return, perhaps your family's for years. It knows your situation, files your return and answers if a letter arrives. Its weak point is crypto: calculating gains with FIFO across thousands of transactions spread over several platforms is not its usual work, and many prefer not to take it on.

The crypto tax specialist

They rebuild your activity from every platform, calculate gains and losses using Hacienda's criteria and document every decision. They can hand you the figures for your gestoría to file, or file the return themselves. It is the most expensive of the three options, and the only one that takes on the full calculation.

A portfolio app does well what is easy to automate: importing transactions, pricing them and adding them up. Problems show up wherever judgement is needed:

• Transfers between your own accounts counted as sales. If you move bitcoin from an exchange to your wallet and the app does not match the withdrawal with the deposit, it may record a sale and a new purchase.
• Zero cost basis on staking and airdrops. If it does not have the price on the day you received the rewards, it values them at zero, and when you sell them the whole amount is taxed.
• Unclassified DeFi. Swaps, liquidity deposits, loans or bridges that the app does not understand and leaves as "unknown" or classifies wrongly.
• Spam tokens. Worthless tokens someone sends to your wallet that the app values as if they were real.
• Duplicates. The same transaction imported twice, by API and by CSV, or from both sides of a transfer.

None of these errors is visible in the final summary: the report comes out clean, with a single figure. That is why we review reports from these tools before they are filed; we explain how in Koinly or CoinTracking report review. If you want to compare the tools with each other, see tools to track your crypto.

It is not distrust: the work is different from an ordinary tax return.

• Volume. An active portfolio can have thousands of transactions a year, spread across several exchanges and networks. Reviewing them by hand is not viable.
• DeFi. Each protocol has its own logic, and classifying every movement properly requires knowing it.
• FIFO per asset and across the whole portfolio. The cost basis of a sale on one exchange may come from a purchase on another years ago. Every source has to be combined before anything can be calculated.
• Risk of a tax agency request. Hacienda receives information from exchanges (forms 172 and 173 and, since 2026, DAC8). If the figures do not add up, the gestoría has to defend a calculation it did not make.

What usually works best is splitting the work: the specialist does the crypto calculation and the gestoría files the full tax return, as always. If you are a firm and clients with crypto come to you, that is how we work with you; see for advisory firms.

Not everyone needs a specialist. A quick way to decide:

• An app is enough if you have only bought and sold on one exchange, without moving crypto out, without staking or DeFi, and you review the report before filing. It is the simplest and cheapest case.
• Your gestoría fits if your activity is that simple and you already have the figures worked out, for example with the app's report reviewed. It adds them to your tax return along with the rest of your income.
• You need a specialist if you have used several platforms and moved funds between them, you have staking rewards, airdrops or DeFi, you are missing data on old purchases, your automatic report has many unclassified transactions or you have received a letter from Hacienda.

A clear sign that your case is not simple: the app's report shows a gain that looks nothing like what you actually made. It is almost always a data problem, not luck, and it gets fixed before filing, not after.

Whoever it is, ask these questions before you hand over your tax return:

• Do they apply FIFO per asset across the whole portfolio? Not exchange by exchange, but combining all your sources.
• Do they give you a report on the criteria used? A document explaining how each grey area was treated, such as staking, DeFi or transfers. It is what defends your return if Hacienda asks.
• Do they handle tax agency requests? If a letter arrives about those figures, who answers it?
• Is the price fixed, and what is it based on? It is reasonable for it to depend on the number of data sources, not on how much you have made.
• Does it include filing the tax return? Or do they only give you the figures for someone else to file?
• Do they ask for your private keys? If the answer is yes, stop there. Public addresses are enough.

The mistakes we see most often when one of these things fails are collected in mistakes when declaring crypto.

At Cleriontax the price depends on how many data sources need to be reconciled, and we fix it before we start. Current rates, VAT included:

If you also want us to file your full tax return, not just the crypto part, it is €150 more per return. You can see what each tier includes on our pricing page.

For reference, a portfolio app costs anything from nothing to a few hundred euros a year, depending on the plan and the number of transactions. The difference is that the app's price does not include anyone reviewing the result or standing behind it.

Can I file using just the Koinly report?

You can, but it is worth reviewing it first. The report will only be as good as the data it received and the rules it applied. If your activity is simple, with a single exchange and no DeFi, it may be fine. If you have moved crypto between platforms, done staking or used DeFi, it will usually contain errors that do not show in the summary.

Can my gestoría file the crypto part of my return?

Yes, if you give it the right figures. What many gestorías lack is not the ability to file it, but to calculate it: rebuilding your activity and applying FIFO across all your sources. The usual approach is for a specialist to prepare the figures and your gestoría to add them to your tax return.

What happens if I already filed my return with an automatic report?

If the report had errors, you can correct your return with a corrective self-assessment (autoliquidación rectificativa), whether you paid too much or too little. If you paid too little, correcting it yourself before Hacienda asks costs much less than waiting.

Does a crypto tax manager tell me what to buy?

No. Neither portfolio apps, nor gestorías, nor we give investment advice. Our work is tax work: calculating, declaring and justifying what you have already done.

Tell us which platforms you have traded on and since when, and we will tell you which tier applies and what we need. The price is fixed and you know it before we start. See our pricing or tell us about your activity.