Country Guide: Belgium
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The Ultimate Financial Guide for US Citizens Moving to Belgium
Moving from the United States to Belgium offers a rich cultural experience, world-class chocolate, and a central hub for exploring Europe. However, for US citizens, dual nationals, and returning Belgians, the transition also brings a complex web of cross-border tax and financial planning challenges.
At Cross Border Planning , our goal is to improve your financial wellbeing by eliminating the guesswork. Whether you are relocating to Brussels for a new job, retiring in Bruges, or moving back home after years in the US, here is everything you need to know about managing your finances across the Atlantic.
1. The Golden Rule: US Citizenship-Based Taxation
The most crucial fact any US citizen moving abroad must understand is that the United States utilizes Citizenship-Based Taxation (CBT).
Unlike almost every other country in the world, the US taxes its citizens and Green Card holders on their worldwide income, regardless of where they live. Moving to Belgium does not sever your tax obligations to the IRS. You will still need to file a US tax return every year, reporting your Belgian salary, investments, and bank accounts.
2. Pre-Move Financial Checklist: What to Do Before You Leave
Planning before you board your flight to Brussels can save you thousands of dollars and countless headaches.
Audit Your Investment Accounts: Many US brokerages will freeze or close your accounts if they discover you have a foreign address due to international compliance laws. Contact your brokerage to see if they support expat accounts, or work with a cross-border advisor to transition your portfolio.
Beware the PFIC Trap: Once in Belgium, European regulations (MiFID II) make it very difficult to purchase US-domiciled ETFs or mutual funds. However, if you buy European mutual funds or ETFs, the IRS classifies them as Passive Foreign Investment Companies (PFICs), subjecting them to highly punitive tax rates and complex reporting. Consult a cross-border planner before buying non-US funds.
Review State Taxes: Depending on your last state of residence (like California, New York, or Virginia), you may still be liable for state taxes even after moving abroad. Establish domicile in a tax-friendly state before you leave if possible.
Keep a US Bank Account: Maintain at least one US bank account and a US credit card with no foreign transaction fees. Opening a new US account from abroad is notoriously difficult.
3. Belgium vs. USA: Crucial Tax System Differences
Understanding how the Belgian system differs from the IRS is vital for effective financial planning.
High Income Tax Rates
Belgium has some of the highest income tax rates in the world. While the top federal tax bracket in the US is 37%, Belgium’s progressive tax rates climb quickly, reaching a top marginal rate of 50% on income over a relatively low threshold (typically around €46,440, adjusted annually).
Capital Gains Variations
The USA: Taxes almost all capital gains, offering preferential long-term rates.
Belgium: Since January 2026, Belgiums applies a 10% Capital Gains tax on the sale of shares if they are part of the "normal management of private wealth." However, speculative trading or highly complex financial instruments can be taxed at 33%. There are many exceptions and exemptions to the capital gains rule - we partner with a wide network of CPA’s with knowledge in both Belgium and the USA that we can put you in touch with.
Wealth and Securities Taxes
While the US does not have a federal wealth tax, Belgium imposes an annual tax on securities accounts if their average value exceeds €1,000,000. Belgium also applies a TOB-tax or tax on stock-exchange transactions, there is a complicated formula behind it, but essentially a tax is applied to each trade - there are ofcourse many exemptions and exceptions.
4. Avoiding Double Taxation
With high taxes in Belgium and ongoing tax obligations in the US, how do you avoid paying taxes twice on the same income? The US and Belgium have a Double Taxation Treaty, and the IRS provides two primary mechanisms to protect expats:
The Foreign Tax Credit (FTC): This allows you to claim a dollar-for-dollar credit against your US tax bill for income taxes paid to Belgium. Because Belgian taxes are generally higher than US taxes, using the FTC usually zeroes out your US tax liability on that income and generates carryover credits.
The Foreign Earned Income Exclusion (FEIE): This allows you to exclude a certain amount of your foreign-earned income from your US taxable income (up to $126,500 for the 2024 tax year).
Note: Choosing between the FTC and FEIE is a complex decision that impacts your ability to contribute to US retirement accounts like IRAs. An independent advisor can help you model the best choice.
5. Crucial Post-Move Reporting (FBAR & FATCA)
Once you settle in Belgium, your compliance requirements increase. Do not ignore these forms, as penalties for non-compliance are severe:
FBAR (FinCEN Form 114): If the aggregate value of all your foreign financial accounts (Belgian bank accounts, pensions, investment accounts) exceeds $10,000 at any point during the calendar year, you must report them to the US Treasury.
FATCA (Form 8938): If your foreign assets exceed certain high thresholds, you must file this form alongside your federal tax return.
6. Returning Belgians & Dual Citizens
If you are a Belgian citizen returning home after working in the US, you face unique hurdles:
401(k)s and IRAs: The US-Belgium tax treaty generally respects the tax-deferred status of US retirement accounts. However, withdrawing from these accounts as a Belgian resident requires careful timing to optimize taxes in both jurisdictions.
Giving Up Your Green Card or US Citizenship: If you plan to formally abandon your US status upon returning to Belgium, beware of the US Exit Tax. If you meet certain net worth or tax liability thresholds, the IRS may treat your departure as if you sold all your worldwide assets on the day before you expatriated, taxing you on the unrealized gains.
Contact us today to schedule a consultation and secure your financial wellbeing abroad
