You clearly do not understand how the system works.
1. As a U.S. person, the obligation is you have to report your worldwide income. It does not mean you have to pay tax.
Filing a tax return is different from paying tax.
2. U.S., in avoiding double taxation, provides income exclusion and tax credits for qualified U.S. persons overseas. It is possible that U.S. persons overseas end up paying the tax for the host country (the U.S. is always considered as home country).
Answers & Comments
Verified answer
You clearly do not understand how the system works.
1. As a U.S. person, the obligation is you have to report your worldwide income. It does not mean you have to pay tax.
Filing a tax return is different from paying tax.
2. U.S., in avoiding double taxation, provides income exclusion and tax credits for qualified U.S. persons overseas. It is possible that U.S. persons overseas end up paying the tax for the host country (the U.S. is always considered as home country).
簡單來說，一定要報稅，但海外收入沒有超過美金八～九萬不需要繳稅