First Year in Spain: A Financial Checklist

Most of what goes wrong financially in an American’s first year in Spain is not a hard technical problem.

It is a sequencing problem. And by the time it surfaces, the window to fix it cheaply has usually closed.

This is a checklist of what to settle, roughly in the order it matters. It is written for a US citizen who has just arrived or is about to. It is general information, not advice about your situation.

Fix your tax residency date first

Every other item depends on this one.

Under Article 9 of Spain’s personal income tax law, you are generally a Spanish tax resident if you spend more than 183 days of the calendar year in Spain. You are also resident if the main base of your economic activities or interests is in Spain. There is a further presumption where your spouse and minor children live there.

Here is the part that surprises people. Residency attaches to the whole calendar year, not from your arrival date forward.

Arrive in late June and you are close to the line. Cross it, and Spain treats you as resident for the entire year. That includes the months you spent in the United States.

So count the days before you book the flight. The month you move decides which country taxes the transactions you carry out that year.

Deal with investment accounts before changing your address

The trigger for most account problems is the address of record, not your citizenship. Updating it to a Spanish one is what surfaces the account in a compliance review.

Ask each institution, in writing, what its policy is for a client who becomes tax resident in Spain. Keep the reply.

Some firms restrict the account to sales only. Some close it. Some do nothing. Policies also differ between the brokerage arm and the retirement plan arm of the same institution, so ask about each account separately.

If a closure notice does arrive, the tax cost of the fix usually matters more than the closure. Why US Brokerages Are Closing Expat Accounts covers the sequence.

One thing not to do. Do not keep a US address you do not actually live at. It creates problems with the firm, with FATCA reporting and with Spanish residency questions. And it solves nothing durable.

Do not buy Spanish investment products

Within the first year, a Spanish bank will almost certainly suggest moving an idle balance into a fondo de inversión.

From a Spanish point of view the recommendation is sensible. For an American it is usually expensive.

Nearly every non-US pooled fund is a passive foreign investment company under US rules. That brings a punitive default tax regime and a separate Form 8621 for each holding.

The Spanish traspaso rule lets a resident switch between funds without a Spanish capital gain. It does nothing at all on the US side.

Individual stocks and bonds are not PFICs. Neither are US-domiciled funds held in a US account. The PFIC Trap sets out what is safe to hold.

Understand which filings now apply

A first year in Spain adds filings on both sides. Most create no tax at all. The penalties for missing them are real.

Filing	Country	Applies when
Form 1040	US	Every year, on worldwide income, regardless of residence
FBAR (FinCEN Form 114)	US	Foreign financial accounts over $10,000 in aggregate at any point in the year
Form 8938	US	Living abroad: over $200,000 at year end or $300,000 at any time (single); $400,000 or $600,000 (married filing jointly)
Modelo 100	Spain	The annual Spanish income tax return for residents
Modelo 720	Spain	Assets outside Spain, with a separate €50,000 threshold for each of three categories
Modelo 714	Spain	Wealth tax, where it applies

The FBAR and Form 8938 are frequently confused. They are separate filings, with separate agencies, thresholds and deadlines. Filing one does not satisfy the other. The $10,000 figure belongs to the FBAR.

On the Spanish side, Modelo 720 covers what is reportable, including the unsettled question of US retirement accounts.

Find out whether wealth tax reaches you

This is the item most American arrivals have never heard of. For a household with meaningful assets it can be the largest number on the page.

The Impuesto sobre el Patrimonio applies a state exempt minimum of €700,000 per taxpayer. A further exemption of up to €300,000 covers a primary residence. A filing obligation can arise on gross assets above €2,000,000 even where no tax is due.

Regions set their own rules. The variation is wide enough to influence where in Spain it makes sense to live.

There is also a separate national levy on larger fortunes, with its own exempt minimum and rates.

Model this before choosing a region, not after signing a lease.

Check the Beckham window, and watch the clock

If you moved to Spain for work, the impatriate regime may let you be taxed on non-resident mechanics rather than the ordinary progressive scale.

The deadline is the expensive part. You make the election on Modelo 149 within six months of your Spanish Social Security registration. If the window closes, it does not reopen.

For a US citizen there is a second question underneath the first. Does a lower Spanish bill actually help, once the foreign tax credit on the US return is taken into account?

The Beckham Law in 2026 works through both halves.

Sort out healthcare and social security

If you are self-employed, you will register as autónomo and pay into the Spanish system on an income-based scale.

The US-Spain totalization agreement stops you paying into both systems at once. It works only if you hold a certificate of coverage from whichever system covers you. Request it when you register, not when the return is due.

On healthcare, Spain’s public system is reachable by residents through several routes, including the convenio especial in most regions. Many arrivals carry private cover alongside it.

Medicare generally does not pay for care received outside the United States. So whether to keep paying Part B is a real calculation.

Review your estate documents

A US estate plan does not transfer cleanly to a civil law country.

Spain applies forced heirship rules that reserve part of an estate for certain heirs, regardless of what a US will or trust says. Spanish inheritance tax falls on the recipient rather than the estate, with reliefs that vary substantially by region.

A revocable living trust that works well in California may be treated quite differently here.

Wills, powers of attorney, healthcare directives and beneficiary designations are all worth reviewing with professionals in both systems.

The short version, in order

Count your days and fix your residency date.
Ask every US institution in writing what happens when your address changes.
Complete anything that should be a US-only event before residency attaches.
Open the Spanish accounts you need, and decline the investment products.
Register for social security and request the certificate of coverage.
Check the Beckham six month window if you moved for work.
Inventory foreign assets against the Modelo 720 categories and the wealth tax thresholds.
Review the estate documents.

Working with a cross-border adviser

Most of this list is coordination rather than complexity.

The Spanish side sits with a gestor. The US return sits with a preparer. The items that fall between them get missed, because they are nobody’s job by default. The certificate of coverage. The residency date. The account structure.

Cross Border Wealth Advisors is a fee-only fiduciary firm serving US citizens living in or moving to Spain. I hold both the CFP® certification and an Enrolled Agent license, so the tax return and the financial plan get decided together.

Everything above is general information, not advice about your situation.

To work through your own list, book an introductory conversation at cbwealthadvisors.com or email info@cbwealthadvisors.com.

Frequently Asked Questions

When do I become a Spanish tax resident?

Generally when you spend more than 183 days of the calendar year in Spain, or when the main base of your economic interests is there. Residency then applies to the entire calendar year.

Do I have to close my US accounts?

No, and usually you should not want to. Some institutions restrict accounts once the address of record is foreign. That is a reason to ask in advance, not a reason to liquidate.

Do I file taxes in both countries?

Generally yes. US citizens file annually on worldwide income wherever they live. A Spanish tax resident files Modelo 100. The foreign tax credit prevents the same income being taxed twice in full.

What is the most common mistake?

Doing things in the wrong order. Transactions that would have been simple US events become two-country events once residency attaches. And residency attaches retroactively to the start of the calendar year.

Sources

Disclosures

This article is general educational information published by Cross Border Wealth Advisors, a company of Gersten Financial Planning Inc., an investment adviser registered with the State of California (CRD 309890). It is not investment, tax, legal or immigration advice.

Rules and figures change. The ones here are stated as of the date above. Cross Border Wealth Advisors is fee-only and receives no commissions. Registration does not imply a certain level of skill or training.

Please read the full article disclosures, which apply to everything published here.

Your First Year as an American in Spain: A Financial Checklist