Tax Law · European Union
Unpick Your Cross-Border Tax Position With a Specialist
Once your income, assets or business cross a national border, so do your tax obligations — and two or more countries may each claim a piece of the same money. We match you, free of charge, with an international tax lawyer who works across jurisdictions every day, so you understand where you stand and file correctly in every country that matters.
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Who this is for
Cross-border activity creates obligations in more places than you might expect
International tax is the area of law that governs how income, gains, property and businesses are taxed when they involve more than one country. It matters to anyone who works remotely for a foreign employer, holds investments or property abroad, runs a company with customers or staff overseas, or moves between countries during the tax year. The difficulty is that each country applies its own rules, and without coordination the same income can be reported in two places at once, taxed twice, or missed entirely. International tax lawyers work out which country can tax what, apply any treaty that limits double taxation, and make sure every filing is complete and consistent — so a cross-border life does not become a cross-border liability.
Why cross-border tax gets complicated
Two countries, two sets of rules.
One piece of income in the middle.
Each jurisdiction taxes by its own logic, and without coordination the same money can be claimed twice.
The same income taxed in two places
Earn in one country while living in another and both may consider you taxable on the same salary or gain. Unless the positions are coordinated and treaty relief claimed, you can end up paying twice on a single source of income.
Filing duties you do not know about
Owning a foreign bank account, property or company shareholding can create reporting obligations in several countries — obligations that apply even when no tax is ultimately due, and whose breach can carry steep penalties.
Inconsistent positions between countries
Reporting the same transaction one way at home and another way abroad can trigger an audit or a correction. A cross-border lawyer keeps the two positions aligned so they do not contradict each other.
What you get
A single lawyer who thinks across borders
We match you with international tax lawyers who routinely coordinate filings across multiple jurisdictions.
One coordinated position
Your lawyer works out which country may tax each source of income or gain, applies the relevant rules and treaties, and designs a single, consistent filing position across every jurisdiction involved.
Treaty relief claimed properly
Where a double tax treaty applies, your lawyer identifies the relief you are entitled to and files the necessary claims and forms so the same income is not effectively taxed twice.
Disclosure and reporting covered
Foreign accounts, assets and entities often carry reporting duties. Your lawyer confirms what must be declared in each country and files it correctly, removing the risk of hidden penalties.
Structures that survive scrutiny
If your business or investments span borders, your lawyer advises on a structure that is both tax-efficient and defensible — built to hold up if any of the jurisdictions involved asks questions.
Coverage
International tax lawyers across Europe
Cross-border tax is governed by a web of national rules and bilateral treaties, so the right lawyer is one who practises in the countries where you have ties. We match cases across the following countries and beyond:
Frequently asked
International tax — common questions
What is international tax?
International tax is the set of rules that determines how income, gains, property and businesses are taxed when they involve more than one country. It covers questions of which country may tax what, how double taxation is avoided, and what must be reported where — matters governed by national law and bilateral treaties rather than a single international code.
Do I have to pay tax in two countries on the same income?
Not necessarily. Most countries have rules or treaties designed to prevent the same income being taxed twice, usually by granting a credit or exemption in one of them. The relief is rarely automatic, however — it must be identified and claimed correctly, which is where a cross-border lawyer helps.
What is the difference between residence and source taxation?
A country will often tax its residents on worldwide income, while taxing non-residents only on income arising from within its borders, such as local property or employment. The overlap between these two principles — residence in one place, source in another — is the classic cause of cross-border double taxation.
Do I need to report foreign assets or accounts?
In many countries, yes. Holding foreign bank accounts, property, investments or company interests can create reporting obligations even when no tax is due, and failure to declare can carry significant penalties. A lawyer will confirm exactly what you must report in each country where you have ties.
Can a double tax treaty eliminate my double taxation?
A treaty can reduce or remove double taxation by allocating taxing rights and allowing relief such as credits or exemptions. Whether and how it applies depends on your residence, the nature of the income and the specific treaty between the countries involved — points a lawyer can confirm for your case.
How do I know which country I should be filing in?
It depends on your residence status, the source and type of your income, and the treaties between the countries concerned. The answer is rarely obvious, and a wrong assumption can lead to missed filings or double tax. A cross-border tax lawyer analyses your facts and tells you exactly where you must file.
Free case review
Stop guessing how your cross-border income should be taxed
Tell us where you live, work and hold assets, and we’ll connect you with an international tax lawyer who coordinates filings across jurisdictions every day — free of charge, with no obligation to hire.