Field Manual · Revised November 2026
US Citizen Spain Bridge
The US Expat's Spanish Tax & Banking Bridge
US Citizen Spain Bridge is a 251-page decision manual for US citizens and green-card holders who live in Spain or are about to move. It explains why moving changes your tax address but not your US obligations, when Spanish tax residence begins, what the 1990 treaty and its saving clause do not do, and how to choose between the foreign earned income exclusion and the foreign tax credit. It covers the Beckham regime tested against the US credit system, employment structures, investment income, the PFIC trap for Spanish funds, retirement accounts, the FBAR, Form 8938, the Spanish information returns (Modelos 720 and 721), entities and trusts, late-filer recovery routes, banking as a US person, crypto-assets under both systems, property, estate, social security and Medicare, family, US state domicile, a twelve-month sequence, the 2026–27 horizon with kill criteria, and exit and renunciation. Two walk-throughs follow the Spanish and the US return, with a filing calendar, figures register, worksheets, adviser briefs and a form-by-form map. Sources were checked on 8 and 9 November 2026, and every claim carries an A, B or C grade. It is educational material, not legal, tax or investment advice.
- Length
- 251 Pages
- Revised
- Nov 2026
- Format
- Delivery
- Instant link
Why this manual exists
You moved to Spain. The IRS did not notice, and it does not need to. From the day you become a Spanish tax resident, you file in two countries, report the same assets to two governments and bank with institutions that would often prefer not to know you. None of it is optional. Almost none of it is difficult once it is done in the right order, and that order is what most Americans in Spain are never given.
The expensive mistakes are quiet. A Spanish index fund that looked sensible and turns out to cost more in US tax and interest than it earned. An FBAR that nobody told you about, a Form 8938 that nobody confused with it, a Modelo 720 that nobody mentioned until a bank letter arrived. A Roth conversion made after the move rather than before. An exclusion elected because a forum said so, when Spanish tax levels made the credit the better answer. Two advisers, each right in their own country and wrong for you, who have never spoken to each other.
US Citizen Spain Bridge is a 251-page decision manual for the American who lives in Spain or is about to. It is built on one rule: for every fact it says what the United States does, what Spain does and where the two do not agree, because most problems in this field are caused not by either law but by the mismatch between them. It names the obligations, orders them into a sequence that protects your filing record and gives you the questions to put to a US cross-border preparer and a Spanish asesor fiscal. Every chapter opens with the question it answers, the documents to obtain first and the condition on which to stop.
What it settles
- Whether moving changes your US obligations. It does not, and the manual shows the three layers (income tax, information returns, banking) and which one carries the heaviest penalties.
- When you become Spanish. The residence year, the date each country acts on and the treaty’s saving clause, with a plain statement of what the treaty does not do.
- How to avoid paying twice. Exclusion or credit, the foreign tax credit with Spain, the Beckham regime tested against the American credit system, employment structures, investment income, retirement accounts and the Social Security treaty question.
- What to do about funds. The PFIC trap that makes a regulated European fund more expensive than it looks, the two elections, and what to hold instead.
- What to report, and to whom. The FBAR, Form 8938, the Modelos 720 and 721, entity and trust forms, and the late-filer routes when you find a gap.
- How to bank. Why Spanish banks ask for your US status and sometimes refuse, how to open and keep an account, and how to keep the US side of your finances alive after you leave.
- How crypto is treated twice. Two gain methods, two currencies, three reports, and moving into Spain with crypto.
- What follows you. Property, estate and forced heirship, Medicare and health cover, a spouse who is not an American, and the US state that keeps taxing you after you move to Madrid.
Dated and graded
This field is full of confident statements that are cheap to make. So every specific figure, date, threshold and administrative position carries an evidence grade: A for an official publication (IRS, FinCEN, BOE, AEAT), B for consistent professional or press sources, and C for a single source or a contested point. Where credible professionals disagree, the manual presents both positions and tells you which you must resolve, including whether US Social Security is taxable in Spain under the treaty, how far the Beckham regime exempts the Modelo 721, and whether Spanish pension-like products are reportable on the Modelo 720. Sources were checked on 8 and 9 November 2026, Appendix D logs the open points and Chapter 26 sets the kill criteria for what would make a position unsafe.
Tools you can use on Monday
Appendix A is a set of master checklists, Appendix B a filing calendar for both countries and Appendix C a figures register. Appendix E gives you worksheets, and Appendix F gives you a brief for your US preparer and a brief for your Spanish adviser, with letters you can send as they stand. Appendix H applies the rules to five constructed profiles (the remote employee, the freelancer, the retiree, the investor and the founder), and Appendix I is a form-by-form reference map. Two walk-throughs take you through the Spanish return and the US return from Spain, step by step.
Built for holders of crypto and capital
If your wealth is in brokerage accounts, funds or digital assets, the order of decisions matters more, not less. The same wallet is property for both countries, but each applies its own method for identifying what you sold, when a gain arises and which reports you owe. Read Chapters 9, 11 to 13 and 18 before you move assets, convert an account or sell a position, not after.
What it will not do
It will not tell you which choice minimises your tax, whether a position is safe on your facts or what the IRS or the AEAT will accept. It does not cover Spanish visas, which belong to the Post-Golden Visa Playbook. It recommends no adviser, bank, broker or custodian and takes no referral fees. It does not replace a US cross-border preparer and a Spanish asesor fiscal. It improves the questions you ask and the evidence you hold when you ask them.
Inside the manual
- 1
Citizenship-Based Taxation in One Chapter
Why moving to Spain changes your tax address but not your obligations: the income, information and banking layers, and which one carries the heaviest penalties.
- 2
The Residence Year
When you become a Spanish tax resident, what each country does on that date, and why the first year decides so much.
- 3
The Treaty and What It Does Not Do
The 1990 Convention, the 2019 Protocol and the saving clause, and why a plan that relies on the treaty to switch off US tax is unsafe.
- 4
Exclusion or Credit
The first big choice, why Spanish tax levels usually decide it, and how the choice in one year constrains the next.
- 5
The Foreign Tax Credit with Spain
Baskets, timing, US-source income and the credits that go unclaimed.
- 6
The Beckham Regime for Americans
A regime built for Europeans, tested against the American credit system: where it helps, where it does not, and the formula that decides.
Show the other 28 chapters
- 7
Employment Structures
A US employer, a Spanish employer, a freelance business or a company of your own: which gives the cleanest two-country position.
- 8
Investment Income
Dividends, interest and gains taxed at two different speeds, and what to check before selling or switching a fund.
- 9
The PFIC Trap
Why a Spanish index fund can cost an American more than the fund earns, the two elections, and what to hold instead.
- 10
Retirement Accounts and Pensions
IRAs, 401(k)s, Roths and Social Security under two systems, and the timing of a conversion or lump-sum withdrawal.
- 11
The FBAR
FinCEN Form 114, the report that is not a tax return: which accounts count, signature authority and the penalty structure.
- 12
Form 8938 and FATCA
The asset report that rides on your tax return, and why an FBAR does not answer it.
- 13
The Spanish Information Returns
Modelos 720 and 721, the Beckham return, wealth tax and the solidarity tax: what to file, in what order and with which contested points.
- 14
Entities, Trusts and Gifts
The forms that attach to a Spanish company, a partnership, a trust or a gift from your parents.
- 15
Late Filers and Recovery
The streamlined and delinquent submission routes, the order of repair and the Spanish side of the clean-up.
- 16
Banking in Spain as a US Person
Why a Spanish bank asks what it asks, why some refuse, and how to open and keep an account.
- 17
US Accounts, Money Transfers and Currency
Keeping the American side of your finances alive after you move, and what moving money creates.
- 18
Crypto-Assets Between Two Systems
One wallet, two definitions of a gain, three reports: FIFO against specific identification, wallet-by-wallet basis, DAC8 and moving into Spain with crypto.
- 19
Property: Buying, Renting and Selling in Spain
Two countries, two basis computations, two views of the same gain.
- 20
Wills, Succession and the Estate
Two estate-tax systems, no estate treaty and a forced-heirship rule most Americans have never met.
- 21
Social Security, Medicare and Health Cover
Which system you pay into, which pays you and who treats you, and the Medicare Part B lapse to avoid.
- 22
Spouses, Children and the Family Return
Filing status, a spouse who is not an American and a child born in Spain.
- 23
State Taxes and the Domicile Problem
The US state that keeps taxing you after you have moved to Madrid, the evidence of ties and how to end the claim.
- 24
The Sequence
Twelve months before the move to the end of the first filing season, and the dates that cannot be missed.
- 25
The Adviser File and the Decision Matrix
How to brief a US preparer and a Spanish adviser so that they answer the same question.
- 26
The 2026–27 Horizon and Kill Criteria
What is moving, including the Spanish election on 29 November 2026, and what would make a position in the manual unsafe.
- 27
Leaving, Switching and Renouncing
Exit rules on both sides and how to leave safely.
- 28
Walk-Through: The Spanish Return
How an American's foreign income and foreign tax actually go onto the declaración de la renta.
- 29
Walk-Through: The US Return from Spain
Which forms go in the envelope, in what order, and how to file and pay from abroad.
- 30
The Retiree's Plan
Social Security, an IRA, a Roth and a Spanish pension, treated as one income that two countries tax.
- 31
Founders, LLCs and Equity Compensation
The company you already own, the one you are about to form and the shares your employer grants.
- 32
Short Stays, Nomads and Part-Year Americans
Staying less than 183 days, and the position of those who come and go.
- 33
The Mistakes Catalogue
Twenty-four errors that recur among Americans in Spain, what each costs and how to avoid it.
- 34
Appendices A to I
Master checklists, a filing calendar, a figures register, the verification log, worksheets, adviser briefs and letters, an English and Spanish glossary, five constructed profiles and a form-by-form reference map.
Is it for you?
Built for
- US citizens and green-card holders living in Spain, or deciding whether to move, who want to see both countries' obligations in one ordered file
- Remote employees of US companies and freelancers invoicing US and European clients from Spain, who need the exclusion-or-credit, structure and social-security decisions
- Retirees and investors with IRAs, Roths, Social Security or brokerage accounts who want to know what Spain does with them before they transfer or convert
- Crypto holders and founders who must reconcile two definitions of a gain and three sets of reports
- Americans who have been in Spain for years and suspect they missed an FBAR, a Form 8938 or a Modelo 720, and want the order of repair
- Spouses and families, and the US preparers and Spanish advisers who serve them
Not for
- Anyone who is neither a US citizen nor a US green-card holder: the manual is built around US citizenship-based taxation
- Readers looking for a Spanish visa or residence route: the Post-Golden Visa Playbook covers those, and this volume touches immigration only where it changes a tax or banking fact
- Readers who want the manual to tell them which choice minimises their tax: it organises the evidence and the questions, and does not decide for you
- Anyone who wants detailed rules for one particular US state: Chapter 23 covers the domicile problem in general and how to end a state's claim
- Anyone expecting the manual to replace a US cross-border preparer and a Spanish asesor fiscal, ideally at the same table
Written by Salah Nomad
Independent research. No referral fees from any tax preparer, bank, broker, custodian or adviser mentioned, and none recommended. Every claim is dated and graded A, B or C, and the two-country rule states what the United States does and what Spain does.