Moving from the United States to Monaco in 2026 takes a personal income, capital-gains and wealth-tax bill from a federal-plus-state ceiling near 50% down to a clean 0% on the Monégasque side — but the catch is sharper than for any EU destination on the matrix. There is no income-tax treaty between the United States and Monaco, so an American who relocates without renouncing keeps the full US worldwide-tax obligation, gets no tie-breaker article to lean on, and has nothing to credit Monégasque tax against (because there is none). Monaco’s 0% regime only delivers its full economic punch after the §877A expatriation tax has been planned, paid, and put in the rear-view mirror.
The Tax Delta at a Glance
| United States (current) | Monaco (after move) | |
|---|---|---|
| Personal income tax | Up to 37% federal + 0–13.3% state | 0% for non-French residents |
| Capital gains tax | 0/15/20% federal + state + 3.8% NIIT | 0% on private investment gains |
| Dividend tax | 0/15/20% qualified + state + 3.8% NIIT | 0% at resident-individual level |
| Wealth / inheritance | Federal estate tax up to 40% above ~$13.99M | 0% wealth; 0% inheritance to spouse + lineal descendants |
| Worldwide vs territorial | Worldwide on citizens (unique) | Residence-based; foreign-source income untaxed |
| Tax treaty with US | — | None (no double-tax treaty in force) |
| Effective rate (entrepreneur, $5M foreign income) | ~30–40% federal + state | 0% Monaco-side; full US tax until renunciation |
Monaco’s structural appeal for Americans is the absence of any personal tax overlay on top of US obligations — but precisely because there is no treaty, there is no relief mechanism either. While a Maltese €15,000 minimum or a Swiss lump-sum payment generates a foreign tax credit on Form 1116, a Monaco resident has no foreign tax to credit, so US tax on worldwide income lands in full until the citizenship is severed. Below renunciation, Monaco is essentially a lifestyle and state-tax decision; above renunciation, it is one of the cleanest 0% regimes on the planet.
Step-by-Step Move
Step 1: Confirm you can legally cease US tax residency
You almost certainly cannot — and this is the defining feature of any US-origin move. The United States taxes citizens and long-term green-card holders on worldwide income regardless of where they sleep. Becoming a Monégasque resident does not remove a single dollar of US federal liability. Three meaningfully different “moves” exist for an American eyeing the carte de séjour, and the choice drives the entire economics.
Move A — physical relocation only. You stay a US citizen, obtain a Monégasque carte de séjour temporaire, and continue filing Form 1040 every April. State tax disappears the moment you cleanly exit California, New York, New Jersey, Massachusetts or Virginia. The Foreign Earned Income Exclusion shelters roughly $132,900 of 2026 wages plus the housing exclusion; on the passive income that dominates a typical Monaco mover’s return, the foreign tax credit (Form 1116) is useless because Monaco charges nothing to credit against. Net result: full US tax on dividends, interest and capital gains; zero state tax; zero Monaco tax; an expensive Monaco lifestyle paid out of post-US-tax dollars.
Move B — long-term green-card surrender. A non-citizen who has held a green card in 8 of the last 15 tax years is a “long-term resident” and is treated as a citizen under §877A on surrender. Surrendering before the 8-year mark avoids the exit tax entirely; surrendering after triggers the same deemed-sale machinery as a renouncing citizen. For non-US-passport-holding green card holders moving to Monaco, the timing of the I-407 filing is one of the highest-leverage decisions in the sequence.
Move C — citizenship renunciation. The clean break, and the only path that actually unlocks Monaco’s true 0% economics on post-move appreciation. The closest US consular post for Monaco residents is the US Embassy in Paris (or the Marseille consulate); Monaco itself has no US consular section. Schedule a renunciation appointment, sign Forms DS-4079 and DS-4080, pay the $2,350 fee, and file a final dual-status return plus Form 8854 the following April. If you cross the “covered expatriate” thresholds, §877A triggers a deemed sale of your worldwide assets — see Step 2.
Step 2: Plan around the US exit tax (§877A)
If you renounce US citizenship or surrender long-term green-card status, §877A asks three questions: (1) is your net worth $2 million or more on the day before expatriation; (2) was your average annual net US income tax liability for the prior five years above the inflation-indexed threshold (approximately $201,000 for 2026); and (3) can you certify five years of clean US tax compliance on Form 8854. Fail any of the three and you are a “covered expatriate,” subject to a deemed sale of your worldwide assets at fair market value on the day before expatriation. Practically every Monaco-bound American will trip the net-worth test — that is the entry profile of the carte de séjour.
The deemed gain is taxed at normal capital-gains rates, with a per-person exclusion of approximately $890,000 (2026 inflation-adjusted). Specified tax-deferred accounts (401(k)s, traditional IRAs) are taxed as if fully distributed; deferred-compensation arrangements either accelerate or attract a 30% withholding under §877A(d). There is also a 40% inheritance tax under §2801 on US-person beneficiaries who later receive gifts or bequests from a covered expatriate — a serious concern if you intend to leave US-resident heirs and one that should be modelled before the renunciation appointment, not after.
The Monaco angle here is uniquely favourable: because Monaco levies 0% capital gains tax and 0% wealth tax, the §877A deemed-sale step-up basis is preserved cleanly with no Monégasque drag whatsoever. Post-renunciation appreciation on portfolios, private holdings, and real-estate gains is genuinely 0%-taxed — there is no remittance trigger as in Malta or Cyprus, no minimum tax as in the GRP, no lump-sum negotiation as in Switzerland. Most Americans planning a Monaco renunciation start §877A modelling three to five years ahead — gifting under the $19,000 (2026) annual exclusion to non-US-person family, harvesting losses against pre-IPO private equity, and timing major liquidity events to fall after expatriation date so the gain crystallises at the Monaco step-up basis with zero tax anywhere. If you stay a US citizen (Move A), there is no §877A — but there is also no real tax saving outside the state-tax exit and the eventual estate-planning play.
Step 3: Establish Monaco tax residency
The American route is the standard carte de séjour under the means-tested track — Monaco’s investor and self-employed/salaried routes are technically open to Americans but used much less often. Requirements:
- Bank deposit at a Monaco-licensed bank — formal floor €500,000, with most established private banks requiring €1,000,000+ in practice for a US-passport applicant after KYC.
- Housing — owned Monaco property (entry-level apartments from €500,000+; central districts €40,000–€60,000+ per m²) or a registered long-term lease (≥12 months; rentals typically €5,000–€20,000+/month).
- Documents — passport, full birth certificate, marriage/divorce records, criminal-record extracts from every country of residence over the past five years (FBI Identity History Summary plus state-level checks), bank reference, lease/title deed, mandatory health insurance.
- Day-count test — to be a Monégasque tax resident under the carte de séjour, you should spend 183+ days/year in Monaco and have your principal home there.
The application is filed at the Section des Résidents (Sûreté Publique), followed by an in-person police interview and reputational vetting. A complete file typically receives a decision in 3–6 months; banking onboarding (the rate-limiting step for most Americans, given FATCA workload at Monégasque banks) and housing search often add another 2–4 months on the front end. The Section issues a carte de séjour temporaire valid one year, renewable annually for the first three years; then the carte ordinaire (years 4–6) and eventually the carte privilégié (10-year). Full destination breakdown on the Monaco country page.
Step 4: Document the break and the new tie
Even though you cannot fully escape US federal tax as a citizen, you absolutely can — and must — exit your US state cleanly. California in particular treats departure as ambiguous unless every tie is cut: surrender the driver’s licence, close in-state bank and brokerage accounts (or move them to a state-neutral broker like Schwab or Fidelity domiciled in a no-tax state), terminate California gym memberships and club affiliations, deregister to vote, and file a final California 540NR marked “part-year resident.” New York, New Jersey, Massachusetts and Virginia apply similar scrutiny, and unlike federal tax there is no FTC mechanism that recovers what these states charge.
For Monaco, collect the carte de séjour, the registered lease or notarised property deed, Monégasque utility bills, a Monaco bank-account statement, the Monaco bank’s attestation of funds, and — critically — a documented day-count log. Because there is no US-Monaco income-tax treaty, there is no Article-4 tie-breaker to fall back on. The IRS’s primary residency tests (Substantial Presence Test for non-citizens, citizenship for citizens) operate on their own logic, and a US tax-court challenge to a claimed Monaco residency is decided on facts and circumstances — physical presence, centre of vital interests, family location — rather than treaty mechanics. Practitioners commonly recommend documenting Monaco presence with utility usage, bank-card transaction history, club memberships, school enrolments, and dated receipts. See our 183-day rule guide for the standard evidence pack.
Step 5: First-year compliance in both jurisdictions
Your first April after the move is the heaviest. As a US citizen you file a normal Form 1040 (worldwide income), Form 2555 for the FEIE if you have earned income, Form 1116 for the foreign tax credit (largely empty — there is no Monégasque tax), FBAR (FinCEN 114) for any aggregated foreign accounts above $10,000, and Form 8938 (FATCA) if balances exceed the higher individual thresholds for foreign residents (~$200,000 single / $400,000 joint year-end, or $300K/$600K at any time). Monaco has signed a Model 2 FATCA IGA with the United States, so Monégasque banks report your account balances and income directly to the IRS — there is no privacy buffer to lean on.
If you renounced, you also file a final dual-status return plus Form 8854 by the regular due date of the year following expatriation. Monaco has no personal income tax filing requirement to coordinate against, which is a meaningful operational simplification compared to a Maltese GRP or Italian flat-tax filing — but it also means there is no Monégasque tax certificate to use as treaty evidence anywhere else. Engage a US enrolled agent or CPA who has filed Form 8854s before; the §877A computation is unforgiving and is the single most-litigated item on a Monaco renouncer’s exit return.
Cost & Timeline
| Phase | Cost | Time |
|---|---|---|
| US/MC cross-border tax planning | $7,000–$20,000 | 2–3 months |
| §877A modelling (renunciation only) | $15,000–$60,000 | 6–24 months ahead |
| Monaco bank onboarding + KYC | Bank-specific (often €0 advisory) | 2–4 months |
| Bank deposit (locked at Monégasque bank) | €500,000–€1,000,000+ | Single event |
| Housing: long-term lease (registered ≥12 months) | €5,000–€20,000+/month | 1–2 months |
| Housing: property purchase (alternative) | €500,000–€10M+ (€40–60K+/m² central) | 2–4 months |
| Carte de séjour government fees + advisory | €10,000–€50,000+ | 3–6 months |
| Move + setup (utilities, health insurance, schools) | €10,000–€30,000+ | 1–2 months |
| First-year US filing (1040, FEIE, FBAR, 8938) | $4,000–$15,000 | Annual |
| Renunciation fee (Move C only) | $2,350 + §877A liability | Single event |
| Total year-1 effective cost (Move A, rental route) | €1,000,000–€2,000,000+ committed + ongoing | 6–10 months |
Treaty Considerations
There is no income-tax treaty between the United States and Monaco. The US Treasury list of in-force income-tax treaties does not include the Principality, and Monaco’s narrow treaty network — biased toward France, Luxembourg, Qatar, and a small band of European partners — has never extended to the US. The practical consequences are large.
First, there is no Article-4 tie-breaker (permanent home → centre of vital interests → habitual abode → nationality). For a renouncing former citizen with continuing US-source income, US sourcing rules apply unilaterally, and any cross-border dispute is decided on US domestic law alone. Second, withholding on US-source dividends, interest and royalties paid to a Monaco-resident American is generally the statutory 30% rather than a reduced treaty rate of 5/15%. This is the most expensive consequence for portfolio holders — a high-dividend US equity sleeve held in a Monaco brokerage account suffers 30% NRA withholding once the holder has renounced, with no treaty relief. Most renouncing Americans accordingly rebalance toward total-return / accumulating structures (Irish-domiciled UCITS for non-US persons, US municipal bonds for US-source-tax-free interest where available) before expatriation, and avoid PFIC exposure entirely while still US persons.
Third, there is no US-Monaco Totalisation Agreement — Social Security and Medicare contributions can theoretically duplicate against the Monégasque caisse, though as a non-employee/non-self-employed Monaco resident the issue rarely bites. Fourth, estate-tax exposure is governed unilaterally by US §§2001–2056 (for citizens and US-situs assets of NRAs) and unilaterally by Monégasque inheritance rules (8–16% for non-direct relatives; 0% for spouse and lineal descendants); there is no estate-tax treaty either. Concentrated US-situs assets owned by a Monaco-resident NRA — particularly US real estate and US-incorporated company shares — face the unindexed $60,000 NRA estate-tax exemption, a notorious trap for renouncers who keep meaningful US holdings.
The implication for sequencing is unambiguous: finish §877A first, restructure US-source-heavy portfolios second, move to Monaco third.
Common Mistakes
- Assuming a treaty exists. It doesn’t. Every “treaty position” pitched in a US-Monaco context is unilateral US law, not a bilateral concession — verify before relying.
- Triggering covered-expatriate status by accident. Founders with appreciated private-company stock, large 401(k) balances, or US real estate often blow past the $2M net-worth threshold without modelling it. Renunciation should be modelled three to five years ahead, not in the month before the embassy appointment.
- Failing to exit your US state cleanly. California, New York, New Jersey and Massachusetts pursue former residents aggressively. A retained driver’s licence, voter registration or rental property can keep you state-resident for years — and that bill is not offset by Monaco (because Monaco charges nothing to credit).
- Holding high-dividend US equities post-renunciation. 30% NRA withholding with no treaty relief is the single largest passive-income leakage; rebalance before expatriating.
- Locking the bank deposit before §877A is modelled. Monaco banks tie up €500K–€1M+ for KYC; releasing that before tax planning closes can force compromised timing on the renunciation.
- Ignoring the French-national filter. Dual US/French nationals fall under the 1963 Franco-Monégasque Convention and remain liable to full French income tax in Monaco. The 0% regime is not available to them.
FAQ
Will I still have to file in the US after moving to Monaco?
Yes, for life, unless you formally renounce US citizenship under §877A. US citizens file Form 1040 on worldwide income from anywhere on earth, including Monaco. The FEIE shields approximately $132,900 of earned income for 2026; the foreign tax credit is essentially useless because Monaco charges no personal income tax to credit against.
Is there a US-Monaco tax treaty?
No. The US Treasury’s list of in-force income-tax treaties does not include Monaco. There is also no estate-tax treaty and no Totalisation Agreement. The US and Monaco do, however, have a FATCA Model 2 IGA in force — Monégasque banks report your account information directly to the IRS.
Can the Monaco carte de séjour actually save an American any tax?
Without renunciation, no — Monaco levies nothing to credit against the continuing US worldwide tax bill, so federal tax is paid in full on every category of income. The savings come from (a) eliminating US state tax (often 5–13%), (b) 0% Monégasque inheritance tax to spouse and lineal descendants versus the federal estate framework, and (c) post-renunciation 0% on capital gains, dividends, interest and wealth, which is uniquely clean among European bases.
Can I keep my US bank, brokerage and 401(k)?
Most can be kept, but several US brokers restrict service to non-US-resident clients post-FATCA. Schwab International and Interactive Brokers generally retain Monaco-resident American clients; Fidelity is case-by-case. 401(k) and IRA distributions remain US-tax-deferred while you are a US person; post-renunciation, they are taxed under the unilateral US NRA rules with no treaty relief.
How long does the full US-to-Monaco move take?
Plan on 6–10 months end-to-end for Move A: 2–3 months tax planning, 2–4 months Monaco banking onboarding (the slowest step for a US passport), 3–6 months carte de séjour processing at the Section des Résidents, 1–2 months for arrival logistics. Move C (renunciation) typically adds 12–24 months ahead to plan §877A around the renunciation date.
Does Monaco tax cryptocurrency gains?
Capital gains realised by a Monaco-resident individual private investor on cryptocurrency are not subject to personal tax in Monaco. While you remain a US citizen, the IRS still taxes the same gain at federal rates plus any state residual; post-renunciation, the Monaco 0% rate stands clean.
Next Step
For the full destination-side breakdown — bank-deposit thresholds, the carte de séjour stages, French-national exclusion, property economics, and how Monaco compares to Switzerland’s lump-sum, Italy’s flat tax and the UAE — see Tax-Free Residency in Monaco. For a deeper look at exit-tax mechanics, see How to Legally Exit a High-Tax Country. For alternative low-tax jurisdictions Americans most often weigh against Monaco, see Switzerland, Italy, and the UAE.
Book a free consultation — we specialise in US-to-Monaco relocations including §877A planning, Monaco banking introductions, carte de séjour filing through Monégasque counsel, and post-renunciation portfolio restructuring around the absence of a US-Monaco treaty.
Last updated: 2026-04-27
Sources:
– IRS — §877A Expatriation Tax and Form 8854 instructions — https://www.irs.gov/individuals/international-taxpayers/expatriation-tax
– US Treasury — United States Income Tax Treaties (Monaco is not listed) — https://home.treasury.gov/policy-issues/tax-policy/international-tax
– IRS — FATCA Foreign Financial Institution List and Monaco Model 2 IGA — https://www.treasury.gov/resource-center/tax-policy/treaties/Pages/FATCA.aspx
– Monaco Sûreté Publique — Section des Résidents — https://www.gouv.mc/Action-Gouvernementale/Securite/Residents
– PwC Worldwide Tax Summaries — Monaco Individual Taxation — https://taxsummaries.pwc.com/monaco/individual
– Henley & Partners — Monaco Residence Programme — https://www.henleyglobal.com/residence-programs/monaco