Questão jurídica principal
Whether X.________ remained tax resident and thus unconditionally taxable in Remetschwil after April 2003
Decisão extraída
Yes. His center of life and tax residence remained in Remetschwil under domestic law.
Fundamentação extraída
He kept his home in Remetschwil, maintained important personal ties there, continued some work in Switzerland, and his stay in Singapore was planned as temporary.