Indonesian taxation is based on Article 23A of UUD 1945 (1945 Indonesian Constitution), where tax is an enforceable contribution exposed on all Indonesian citizens, foreign nationals and residents who have resided for 183 cumulative days within a twelve-month period or are present for at least one day with intent to remain. Generally if one is present less than 120 days, then no tax is owed except on Indonesia source income. Some tax treaties may supersede this or defer to the Indonesia presence test for the year in question. Tax treaties deal with taxation of foreign source income for services rendered in Indonesia which are generally taxed if performed for 120+ days (depending upon treaty) even though one may not be a tax resident.