Did you miss the Modelo 720 deadline?

The ideas in this guide are there to explain what happens if you file Modelo 720 late and how to regularise it. With Aitax you upload the documents: the AI takes care of the heavy lifting. You check that the figures are right. If a question comes up, you ask the specialised AI, trained on the law as it stands.

💡 If you missed the deadline for Modelo 720, don't panic. Aitax is specifically designed to generate your official file in seconds, even for late filings.

You just realized: March 31st has passed and you haven't submitted Modelo 720.

Does this mean you'll receive an astronomical fine? Is it better to stay quiet and hope the Tax Agency (Hacienda) doesn't notice? Can you still submit it?

In this guide, we explain what happens if you missed the deadline, why acting right now is the best financial decision you can make, and how Aitax helps you solve it in a matter of minutes.

Can Modelo 720 be filed after the deadline?

Yes, absolutely. In fact, it is what is known as a late filing (declaración extemporánea).

In the world of taxes, there is a golden rule: it is always better to file late voluntarily than to wait for the Tax Agency to demand it from you.

Hacienda distinguishes between two very different situations:

1. Voluntary filing (late): You realize the error and submit the form before receiving any notice.
2. Prior requirement: Hacienda detects that you haven't submitted the form and sends you a letter or electronic notification forcing you to do so.

What happens if I don't file (Current Sanctions)?

Sanctions for not filing Modelo 720 are still a reality. Currently, fines are governed by the general regime of the General Tax Law:

1. If you file voluntarily (without requirement)

If you beat Hacienda to it and submit it now, the penalties are much lower. Depending on how long you take, you could face:

• Reduced fixed fines: For example, 100€ or 150€ per block of information (accounts, securities, or real estate) filed late.
• Late payment surcharges: Since it is an informative declaration (no money is paid), there are no late interest surcharges on a tax quota, but there is the penalty for filing after the deadline.

2. If Hacienda catches you (with requirement)

If you wait for Hacienda to send you a requirement before acting, the minimum penalty multiplies, starting from a minimum of 300€ according to the General Tax Law, and you lose all reductions for voluntariness.

In addition, this "opens the door" for Hacienda to conduct a deep audit of your Income Tax (IRPF) and Wealth Tax (Impuesto sobre el Patrimonio) declarations for the last 4 years to verify if all income generated by those foreign assets was correctly declared.

💡 The real danger: The greatest risk of not filing Modelo 720 is not the fine itself, but that Hacienda considers your assets as unjustified capital gains, which could mean paying up to 50% of your total foreign capital in taxes.

Thinking about waiting for the statue of limitations? Why "doing nothing" is the most expensive option

Many taxpayers believe that if they manage to hold out for 4 years without Hacienda notifying them, the problem disappears. However, in practice, it is a high-risk strategy for three reasons:

1. Massive Data Exchange (CRS): Spain automatically receives information from more than 100 countries about accounts, securities, and real estate. Hacienda doesn't just look at the current year; it cross-references the information received today with your declarations from the last 4 years. If they find an asset that already existed and you didn't declare, the infraction comes to light immediately and the penalty is inevitable.

2. The fiscal "strike" (up to 50% of capital): The real danger is not the Modelo 720 fine itself, but that Hacienda considers your foreign assets as unjustified capital gains. If detected, you will be forced to pay IRPF on the total value of the undeclared money or assets. This means that, depending on your region, you could end up paying Hacienda up to 50% of all your foreign savings, in addition to late payment interest.

3. "Blocked" assets and money laundering alerts: Without Modelo 720 submitted, your foreign assets are in a kind of "fiscal limbo". The day you want to sell that property or transfer that capital to Spain for a large investment, all bank alarms will go off for money laundering prevention. Regularizing it at that moment of urgency will be much more difficult, slow, and expensive.

⚠️ Real-life risk example:

Imagine you have a portfolio of stocks abroad worth €200,000 and didn't submit Modelo 720.

If Hacienda detects it within 4 years and you cannot correctly justify the origin of the money (for example, with old statements or broker movements), it could consider those €200,000 as if they were income for this year.

What would happen then?

Taxes (IRPF):
Those €200,000 would be added to your income. By increasing your tax base, you would pay at the highest brackets (approx. 45%–47%).
👉 You would pay about €90,000 in taxes.

Penalty:
Hacienda could apply a penalty according to the General Tax Law, which in unfavorable scenarios can be around 50% of the unpaid tax.
👉 In this case: about €45,000.

Total to pay:
€90,000 + €45,000 = €135,000

Result: you could end up paying more than 65% of your portfolio's value, not counting interest.

Why you must file TODAY

Time is your greatest enemy when it comes to late filings for two reasons:

1. Avoid the requirement: Every day that passes increases the probability that automatic information exchange systems (CRS/AEOI) will alert the AEAT about your foreign accounts. Once Hacienda issues the requirement, you lose the opportunity for the reduced penalty.
2. Demonstrate good faith: Submitting the form voluntarily, even if late, demonstrates a will to comply, which is fundamental if you need to appeal any interpretation by Hacienda in the future.

How to file Modelo 720 late with Aitax?

If the fear of making a mistake or the complexity of the data held you back before March 31st, now you cannot afford more delays. Aitax is designed precisely to eliminate that friction.

Steps to "save" your declaration in minutes:

1. Upload your statements: No need to fill in infinite tables. Upload your PDFs from Revolut, Interactive Brokers, DEGIRO, or any foreign bank.
2. AI to the rescue: Aitax automatically extracts fourth-quarter average balances, values as of December 31st, and identification data.
3. Instant Validation: The system checks if you really exceed 50,000€ and if you are obliged to declare.
4. Download the .720 file: In seconds, you will have the file ready to upload to the AEAT Electronic Office.

Result: In minutes, you will have gone from being "missing" with Hacienda to having your situation voluntarily regularized, minimizing any potential economic penalty.

Frequently Asked Questions (FAQ)

Is it more expensive to file now than in March?

Yes, you will probably have a small penalty (usually around 100-200€ if voluntary), but it is insignificant compared to the thousands of euros it could cost if Hacienda discovers you first.

Does Aitax notify Hacienda that I'm late?

No. Aitax is a private tool. You generate the file with us and then you decide when to upload it to the Tax Agency. We only give you the tools to do it right and fast.

Conclusion: Don't let more time pass without complying

March 31st is already history, but the consequences of not acting can last for years. Submitting Modelo 720 late voluntarily is the only smart way to sleep peacefully.

Don't waste hours fighting with the AEAT website or trying to understand complex manuals. Solve your Modelo 720 with Aitax now and take this weight off your shoulders before a notice you don't want to receive arrives.