How long do I have to reply to an AEAT request?

The usual deadline for an information request is ten working days from notification, although what the letter itself says prevails. It counts from the notification date, not from when you open the document, and on the online portal you're deemed notified ten calendar days after it was made available even if you haven't logged in. The first thing we do is work out your real deadline.

Can I ask for an extension?

In some procedures you can, and it's worth considering when the reconstruction will take longer than the time available. It isn't automatic and isn't always granted, so it should be prepared carefully and as early as possible.

I've received a letter or notice from the tax authorities. Is it an information request?

Not always. There are informative letters, warning campaigns inviting you to review your return, information requests and limited reviews. Each has a different scope and deadline. If you read it to us or send it over, we'll tell you straight away what it is and what it requires.

What if I reply myself and only call you if it gets complicated?

You can, but whatever you submit stays on the file and shapes what comes next. If you're going to reply on your own, at least make sure your figures can be rebuilt and are consistent with what you declared.

I don't have the full history from an exchange that closed

That's very common. The reconstruction relies on what does exist: the on-chain trail of your wallets, bank statements of euro deposits and withdrawals, confirmation emails and partial third-party data. You don't always reach one hundred per cent, but you do reach a documented, consistent position, and that's what can be defended.

Will this end in a penalty?

It can't be predicted, and be wary of anyone who says they know. What can be done is to build the best documented position with the data available. If penalty proceedings follow, they're defended separately; we explain this on our page about tax inspections and penalties for crypto.

How much does it cost to reply to a request?

Rebuilding your figures follows our tiers with €150 more in each, because there is a deadline running and your case jumps the queue: Single platform, €400, if all your activity is on one exchange; Multi-exchange, €500, with two or three exchanges; Mixed portfolio, €600, if you combine exchanges with wallets, DeFi, NFTs or stocks across up to three sources; and Complex portfolio, from €850. All prices include VAT. The reply to the AEAT is quoted separately once we've read the notification. Our pricing page shows the tiers without a deadline, €150 lower.

A deadline is already running

AEAT information request about your crypto: what to do before you reply

The first thing isn't the reply, it's the date: the deadline runs from notification, not from when you open the letter. The second is knowing exactly what they're asking for. And the third is having your figures rebuilt before you send anything.

Call us: +34 663 482 301 Tell us about your case

Work out your deadline

Date of notificationIt's in the electronic office and I haven't opened it yet

Rough calculation with ten working days and national holidays. Your letter is what counts: regional and local holidays can shift it. Very tight deadlines or last-minute requests may increase the cost of the service.

Why the Spanish tax authorities are asking about your crypto

You've received a notification from the Spanish Tax Agency (AEAT), by registered mail or on its online portal, asking for information about your crypto transactions in a specific tax year.

It doesn't mean you've done anything wrong. It means the AEAT holds a figure that doesn't match your tax return, almost always the volume reported to it by an exchange. That cross-check is now automatic and done at scale.

There are many legitimate reasons why the two numbers might not match. The most common: transfers between your own wallets, which the report counts as transactions even though you haven't sold anything. Also swaps of one token for another that you didn't know were taxable, or the history of an exchange that closed and from which you can no longer download anything.

What the letter you received says

A sample notification. These are the five things to check before doing anything.

Agencia TributariaSample notification

Procedure

Requerimiento de información (information request)

What has been opened

It sets the deadline, the scope and how to reply. Check it first: an information request is not the same as a limited review.

Tax and year

IRPF (income tax) · Tax year 2024

Which year it covers

Only that year is reviewed, but justifying it needs your history since your first purchase: the cost of what you sold comes from earlier.

Deadline

Ten working days from the day after notification

When it starts

From notification, not from when you read it. In the electronic office it counts after ten calendar days even if you never logged in.

Documents requested

Detail of virtual currency transactions and support for the amounts

What they ask for

Provide what is asked for and nothing more, with a documented rationale behind it. What you send stays in the file.

Secure verification code

A1B2 C3D4 E5F6 G7H8

Whether it's genuine

With that code you can check on the AEAT website that the letter is real. Be wary of emails or texts asking for details or payments.

Information request, limited review or inspection: what you're facing

The letter states which procedure has been opened. The deadline, the scope and the way to respond all depend on it.

What this page covers
Information request (requerimiento de información)
They're asking for specific data. It's the mildest type and doesn't necessarily mean you're under review. The usual deadline to reply is ten working days from notification.
Limited review (comprobación limitada)
This is already a tax management procedure with a defined scope. The authorities review specific items of your return, and it may end with a proposed assessment.
Proposed assessment (propuesta de liquidación)
They've already calculated what they believe you owe. Now is the time to submit arguments, with your own figures in front of you.
Inspection or penalty proceedings
These are different procedures, with other deadlines and a different defence. If that's your case, we explain it on our page about tax inspections and penalties for crypto.
See inspections and penalties

← MilderMore serious →

Deadline to reply to an AEAT request, day by day

The typical pace of an information request with ten working days. Your exact dates depend on the notification.

Day0

Day1

Day2

Day3

Day4

Day5

Day6

Day7

Day8

Day9

Day10

Notification

Reading and scope

Rebuilding your activity

Quantification and strategy

Filing

Deadline expires

Day 0
Notification
The deadline starts running. On the online portal, if you don't access it, you are deemed notified ten calendar days after it was made available to you: that is the real day 0.
Day 1–2
Reading and scope
Which procedure it is, which tax years it covers and exactly what is being requested. This is when to decide whether to ask for an extension; asking late is useless.
Day 2–6
Rebuilding your activity
The long stretch, the one that can't be compressed: consolidating exchanges, wallets and protocols for the year and finding the source of the discrepancy.
Day 7–8
Quantification and strategy
Comparison with what was declared, quantification of the difference and a decision on what to submit. You review it before anything is filed.
Day 9
Filing
We file with a day to spare. Never on the last day: nobody can fix a portal outage on the deadline. After that we deal with any further requests and keep you posted until the file is closed.
Day 10
Deadline expires
Without a reply, the authorities may impose a penalty for failing to respond and issue an assessment with whatever data they hold.

Whatever you reply now stays on the file.

The first reply shapes everything that comes after. Correcting a submission that's already been filed is harder, and more expensive, than preparing it properly the first time.

What we need from you

The full notification, with all its pages and the notification date visible.
Your tax return for the requested year, and earlier ones if any.
Exports from your exchanges for the period: CSV or read-only API keys. Never private keys.
Public addresses of your wallets, to rebuild the on-chain trail and prove which movements were between your own accounts.
Bank statements showing euro deposits and withdrawals, the strongest evidence when history is missing.
Anything you've already sent to the authorities, if you replied on your own before.

What you receive

The reply, filed on time

The response document with its proof of filing.

The reconstruction report

The transaction-by-transaction detail behind every figure for the year.

The criteria memo

Which criterion was applied to each doubtful point and on what basis. It's what supports your position if the procedure continues.

The scenario map and your reconciled portfolio

What may happen from here and what each outcome would mean. Your portfolio is left reconciled and ready for the following years.

How much it costs

Before replying you need the figures. What it costs to rebuild them depends on how many data sources need matching, not on what's being claimed.

Rebuilding your figures

The cost depends on how many data sources need matching, not on what they are claiming from you. Each tier is €150 more than a report with no deadline: with an open request, your case jumps the queue and is worked against the tax agency’s date.

Single platform: €400
Multi-exchange: €500
Mixed portfolio: €600
Complex portfolio: from€850

VAT included

Replying to the tax agency is not included in these prices: it is quoted separately.

Replying to the tax agency

Fixed quote

As soon as we've read the notification we tell you what the reply will cost, before we start and with no surprises.

The reply and its filing on time
Supporting documentation, organised and with its rationale
Follow-up on any further requests

Ask for a quote

Frequently asked questions about AEAT information requests

How long do I have to reply to an AEAT request?: The usual deadline for an information request is ten working days from notification, although what the letter itself says prevails. It counts from the notification date, not from when you open the document, and on the online portal you're deemed notified ten calendar days after it was made available even if you haven't logged in. The first thing we do is work out your real deadline.
Can I ask for an extension?: In some procedures you can, and it's worth considering when the reconstruction will take longer than the time available. It isn't automatic and isn't always granted, so it should be prepared carefully and as early as possible.
I've received a letter or notice from the tax authorities. Is it an information request?: Not always. There are informative letters, warning campaigns inviting you to review your return, information requests and limited reviews. Each has a different scope and deadline. If you read it to us or send it over, we'll tell you straight away what it is and what it requires.
What if I reply myself and only call you if it gets complicated?: You can, but whatever you submit stays on the file and shapes what comes next. If you're going to reply on your own, at least make sure your figures can be rebuilt and are consistent with what you declared.
I don't have the full history from an exchange that closed: That's very common. The reconstruction relies on what does exist: the on-chain trail of your wallets, bank statements of euro deposits and withdrawals, confirmation emails and partial third-party data. You don't always reach one hundred per cent, but you do reach a documented, consistent position, and that's what can be defended.
Will this end in a penalty?: It can't be predicted, and be wary of anyone who says they know. What can be done is to build the best documented position with the data available. If penalty proceedings follow, they're defended separately; we explain this on our page about tax inspections and penalties for crypto.
How much does it cost to reply to a request?: Rebuilding your figures follows our tiers with €150 more in each, because there is a deadline running and your case jumps the queue: Single platform, €400, if all your activity is on one exchange; Multi-exchange, €500, with two or three exchanges; Mixed portfolio, €600, if you combine exchanges with wallets, DeFi, NFTs or stocks across up to three sources; and Complex portfolio, from €850. All prices include VAT. The reply to the AEAT is quoted separately once we've read the notification. Our pricing page shows the tiers without a deadline, €150 lower.

The deadline won't wait

If you have the notification in front of you, the most useful thing you can do now is tell us the date and what they're asking for. In five minutes you'll know which procedure it is, how many working days you really have left and what needs to be gathered.

Tell us what your activity looks like. With this we know what work lies ahead and can give you an indicative timeline and price, with no commitment.

Roughly how many transactions do you have?*

Is the AEAT involved in any way?*

Where do you trade?*

Which tax years concern you?*

Name*

Email*

Phone*

Anything else we should know (optional)

I have read and accept the privacy policy.

Reply within 24–48 working hours

The information published by Cleriontax is for general guidance and does not constitute personalised tax advice or investment advice. Each situation requires individual analysis.