Modelo 720: declaring foreign assets as a Spanish resident

Everyone I meet assumes Modelo 720 is just a one-off form you tick when you move. Reality: it’s a standing reporting duty that can trip you up years later if you forget an overseas account or a second home. It looks small on paper. In practice, it’s fiddly, you’ll need paperwork from foreign banks and property registries, and Spanish tax officers can and do follow up.

Who must file Modelo 720, and when

Short answer: Spanish tax residents must file Modelo 720 to declare foreign assets if the value in any of the declared categories exceeds €50,000 on 31 December of the tax year in question. That rule — the €50,000 threshold per category — is the single most useful number to remember (as of 2026). The categories are: bank accounts; securities, life insurance and similar rights; and real estate outside Spain.

If you became a Spanish tax resident during the year, you still need to consider whether you must declare. The general filing window for the previous tax year’s foreign assets runs from 1 January to 31 March. In other words, in the March window you declare what you held on 31 December. If you moved to Spain after 31 December, you normally won’t file that March. If you moved earlier in the year and were resident on 31 December, you must file in the March period.

Tax residency itself is the basic trigger. If you spend 183 days or more in Spain in a calendar year, or your centre of economic interests is here, you’re almost certainly a Spanish tax resident — read the fuller explanation at /en/finance-tax/tax-residency-spain-183-days.

Exactly what you must declare (and the headline thresholds)

Modelo 720 groups foreign assets into three boxes. Use the table below as the shorthand:

Category	What it covers	Threshold (as of 2026)
Bank accounts	Balances in accounts held with foreign banks (incl. joint accounts; declare your share)	€50,000 per category
Securities and insurance	Shares, bonds, ETFs, foreign pensions if they are rights or insurance contracts, and life insurance policies with cash value	€50,000 per category
Real estate and rights	Property abroad and other foreign real-estate-related rights (usufructs, co-ownership)	€50,000 per category

Two practical points most retirees miss:

• If any category is already above €50,000 you must file even if other categories are small.
• If you filed last year, you don’t have to repeat the same figures every year — only if any category changes by more than €20,000 compared with the last filed amount (check Agencia Tributaria because regional practice and court cases have affected the detail; still, €20,000 is the commonly quoted revision threshold).

Also: foreign pensions can be a trap. A regular paid pension (income) is declared on your IRPF, not always on Modelo 720. But if the pension is held as an overseas pension plan or insurance contract with a cash value on 31 December, it may fall into the securities/insurance box and count toward the €50,000 threshold.

How you actually file — the steps and the paperwork checklist

Filing is done to Agencia Tributaria. There’s no paper submission at the tax office for Modelo 720 — it’s an online form. You’ll need one of these three ways to sign:

• Digital certificate (recommended): a personal electronic certificate (FNMT) installed in your browser.
• Cl@ve PIN: useful for residents with a Cl@ve account, but some parts of Modelo 720 work better with a certificate.
• Tax agent: a gestor or tax advisor with power of attorney can file for you using their professional access.

Documentation you’ll need (collect this before you sit down to file):

• Bank statements showing balances on 31 December for every foreign account (printouts or PDFs with account numbers).
• Broker statements/contract notes or an annual summary showing market value of securities and funds on 31 December.
• Title deeds (public deeds/escritura) or a local property registry extract for any foreign property, with the 31 December valuation used (market value or the value used for tax purposes in the property’s country; banks and appraisers can help if you don’t have a recent valuation).
• Insurance contracts or policy statements showing surrender/cash values as of 31 December.
• Proof of ownership splits for joint assets (e.g., if a bank account is shared, your declared figure is your share).
• Currency conversion evidence: balances must be declared in euros using the exchange rate on 31 December (use the ECB rate or the rate specified by Agencia Tributaria for that year).
• If you appoint a tax agent: a power of attorney (modelo 030 or signed mandate) and their details.

Checklist — quick run before you file:

• Gather all 31 Dec statements and valuations.
• Decide whether any category exceeds €50,000.
• Confirm you have a digital certificate or have hired an agent.
• Check if you filed this category previously and whether the change is >€20,000.
• Scan/PDF everything and keep originals for at least five years.

If tech is a problem, hire a gestor for the first filing. Expect to pay one-off fees: a straightforward single-category filing can cost €150–€300. If you have several properties or complex cross-border holdings, fees commonly range €400–€800 because of valuations and extra paperwork.

Small practicalities: the form asks for foreign tax ID numbers, addresses, dates of acquisition and the reason you hold the asset. If you don’t have an official valuation for a property, a realistic bank appraisal or local agent’s valuation dated close to 31 December is generally accepted — but keep the evidence.

Penalties, real costs, and what drives them up or down

Filing Modelo 720 itself has no tax fee. The costs are: time, paperwork, professional help and the downside of not filing (fines and tax adjustments). Be clear: the Spanish tax office has historically treated Modelo 720 omissions very seriously. Court rulings in the EU and Spain have challenged the most disproportionate sanctions, but enforcement remains strict. For up-to-date official penalty scales consult Agencia Tributaria’s Modelo 720 page (agenciatributaria.es).

What you will pay in practice

• Filing fee: €0 to Agencia Tributaria.
• Tax advisor/gestor: expect €150–€800 for typical retiree situations. One-off; less in later years if your situation is unchanged.
• Translations, notarisation or apostilles: €25–€200 depending on what foreign documents you must legalise.
• Valuations: bank or estate agent valuations for foreign property can be €100–€400 each.

What non-filing can cost

I’m deliberately not quoting a single sanction table because the law has been litigated and numbers change. But understand this: failing to file, filing late, or filing incomplete or incorrect information can trigger administrative fines and tax reassessments plus interest. In practice that can mean thousands — and in complex cases, much more if the Agencia Tributaria opens an investigation and reclassifies unreported assets as taxable income or base for wealth tax. The takeaway: the potential penalty range is large and can outstrip the modest cost of getting professional help to file correctly.

What drives the cost up:

• Many small accounts across different countries — each needs a statement and possibly translation.
• Foreign properties without recent independent valuations.
• Complex ownership structures (trusts, corporate holdings, nominee accounts).

What reduces the cost:

• Simple affairs: one or two bank accounts and a pension savings account tend to be cheap to document.
• If you keep good annual statements and use the same advisor yearly, subsequent filings are quicker and cheaper.

Once you’ve filed: what changes — and what remains to do

Filing Modelo 720 itself does not change your tax liability; it’s an information return. But it matters because it tells Hacienda where to look. After you file:

• You reduce the risk of administrative fines for non‑reporting.
• Hacienda has a record they can use if they later audit your IRPF (income tax) or wealth tax returns. So accurate values today make later audits easier to defend.
• You’ll still need to declare foreign income on your annual IRPF, and foreign assets can feed into Spain’s wealth tax calculation (see /en/finance-tax/wealth-tax-spain-expats for how that works). Filing Modelo 720 doesn’t create a tax — it makes it visible.

If you’re covered by a double-taxation treaty (for example the US-Spain treaty), Modelo 720 doesn’t replace treaty paperwork. It simply sits alongside your IRPF and treaty claims. If you’re a US citizen, make sure you also understand how the declaration interacts with your US filing: see /en/finance-tax/double-taxation-treaty-us-spain for treaty detail and how to avoid double taxation.

Finally: once the first correct filing is done, future filings are usually maintenance rather than full reconstructions — provided your holdings don’t change dramatically. So spend money once to avoid hugely expensive headaches later.

FAQ

I moved to Spain last June — do I need to file Modelo 720 this March?

If you were a Spanish tax resident on 31 December (for example you spent 183+ days in Spain during the calendar year or your economic centre is here), you must check whether any single category of foreign assets exceeded €50,000 on 31 December. If yes, you must file in the January–March window. If you became resident after 31 December you don’t file that March. If you’re unsure about residency, see /en/finance-tax/tax-residency-spain-183-days or ask a gestor.

Do I have to report my foreign pension on Modelo 720?

Not always. Regular pension payments are income and belong on your IRPF. But if you hold a foreign pension plan or an insurance contract with a cash surrender value on 31 December, it may fall into the securities/insurance category and count toward the €50,000 threshold. If in doubt, treat the pension plan’s year-end statement as part of your Modelo 720 paperwork and discuss with your advisor.

I missed filing for a previous year — what do I do?

Don’t ignore it. Back-files are messy but solvable. Contact a gestor immediately: in many cases you can make a voluntary disclosure to reduce penalties and show cooperation. The precise outcome depends on how long ago and how material the omission was, so act sooner rather than later.

Can my UK/US/Canadian tax advisor file Modelo 720 for me?

They can prepare the numbers, but the online filing requires either your digital certificate/Cl@ve or a Spanish tax agent with power of attorney. Most expats let a Spanish gestor handle the online submission and give their foreign advisor copies of the filing. If you want your foreign advisor to lead, you’ll still need to grant a Spanish representative power of attorney to submit the form.