Summary: Under the tightened OECD guidelines, performing core revenue-generating activities or habitually concluding B2B contracts while operating from a foreign country can inadvertently trigger a Permanent Establishment, subjecting single-member entities to unexpected local corporate taxes. The Shifting Landscape of Cross-Border Taxation The implementation of the updated OECD Model Tax Convention has fundamentally altered how national tax authorities assess corporate presence. Historically, remote professionals operating overseas primarily worried about personal income tax thresholds. The regulatory focus has now expanded to include the corporate entities those individuals represent. Simply holding a digital nomad visa or a tourist pass no longer provides a shield against corporate audits. Tax agencies are actively investigating whether the physical presence of a company director or sole proprietor creates a legal footprint in the host country, making digital nomad corporate tax comp...