EU Remote Developers Face Hidden Tax Residency Risks When Working Across Borders

Developers working remotely from another EU country under a contract with an employer in a different member state may be exposed to tax obligations they did not anticipate. Each country applies its own domestic tests for tax residency, such as having a permanent home or a centre of vital interests there, so a person can end up resident in two countries at once. Bilateral tax treaties, typically based on the OECD model, resolve such dual residency through a tiebreaker sequence that considers permanent home, vital interests, habitual residence, and nationality. The article also notes that the commonly cited 183-day threshold governs when employment income becomes taxable in the source country rather than determining residency itself. Social security coordination and possible permanent establishment risks for employers are additional areas of concern.