More and more expats work for a company in one country while living in another. It's convenient—but taxes, social security, and residence can quickly get tricky. Here's a practical guide to enjoy cross-border remote work without breaking any rules.
Working remotely from another EU country affects both taxes and benefits.
Detached employee: Your company temporarily sends you abroad, covered by home system (A1 form).
Long-term teleworker: If you live 183+ days abroad, you're likely tax-resident there.
Freelancer: Taxed where you reside.
Understanding your status is crucial, just as it is when finding work abroad or considering cross-border employment.
After 183 days, the host country can tax your income.
Treaty rules prevent double taxation but usually require two filings.
Example: A French employee living in Portugal pays taxes there, with a credit in France.
This system is similar to how freelancers navigate VAT across borders—you need clarity on both jurisdictions.
EU regulation 883/2004 says you can only contribute to one system.
Use form A1 to stay in your home country's system. Without it, you'll switch automatically to the local one.
Key point: The A1 proves your affiliation and prevents dual contributions. This is as important as maintaining your healthcare coverage when moving abroad.
Keep your EHIC (European Health Insurance Card) updated and add international coverage if needed.
Inform your employer—some policies cover only domestic work.
Recommended providers:
Just as you need to understand how the EHIC works, ensuring comprehensive coverage across borders is essential.
Inès lives in Barcelona, works for a Lyon firm, becomes Spanish tax-resident after six months, but stays under French social system via A1 form.
She files taxes in both countries with a credit mechanism. Two filings, zero issues.
Her success came from early planning—similar to how proper preparation helps with any major move abroad.
Keep dual tax calendars: Use Google Calendar to track deadlines in both countries.
Store pay slips & A1 forms: Digital copies in cloud storage (encrypted).
Contact non-resident tax centers if unsure: Most countries have dedicated services.
Don't open local business accounts without legal clarity: Can trigger tax reclassification.
Maintain documentation: Like keeping track of rental contracts or banking documents, organized records prevent headaches.
No. It may create unexpected tax and legal obligations for the company—always inform HR. Your employer needs to assess social security, tax withholding, and legal compliance in both jurisdictions.
You'll automatically switch to the host country's social security system after a few months, potentially creating double contributions and administrative complications. Always request the A1 before working remotely long-term.
Most tax treaties use 183 days as the threshold for tax residency. Count carefully—it's often based on physical presence, not just registered address. Keep travel records to prove your status if questioned.
For more practical insights on this topic, explore our related articles:
Conclusion: The future of work is borderless—but the law isn't. Know the rules to enjoy your professional freedom safely.
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Julien Maurice is the founder of AdminLanding and writes the editorial guides on ExpatAdminHub covering European expat life, France-Switzerland cross-border work, and French administrative procedures. Contact: [email protected]
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