稅務問題 - 美國

不確定能不能在這個版發問，如果不是我會自D。

我今年五月底搬離美國，從今年一月到二月底都有用opt實習，去年的稅也申報完了。

但是今年情況比較複雜一點，查了幾天文章都不太確定情況，
想跟各位請教一下...

我現在人在加拿大旅遊，手邊有美國的freelance，
我確定我不能在加拿大為加拿大公司工作，所以接案子都有避開加拿大公司，
但是我不確定我明年要繳稅的時候到底要不要報美國的稅，
以下是我查到的資料：

Unlike holders of green cards, holders of nonimmigrant visas may or may not
have to report income and pay taxes to the United States Government.
Holders of nonimmigrant visas only become tax residents if they spend at
least 183 days of the current year within the United States. So, if you
spend 200 days in the United States and are a holder of a nonimmigrant visa,
you will probably be required to report your income to the IRS.

In addition, there is a weighted system that could also put you in the
category of a tax resident even if you spent less than 183 days in the
United States during the current year. If you have been in the United
States for a total of at least 183 "weighted" days during the prior
three years in the United States, then you are also a tax resident, unless
you spent less than 30 days within the US during the current year.

就這段文字看起來我明年還是要再申報一次美國的稅（我過去三年都一直待在美國），
但從我離開美國國土後，我在加拿大接到的美國公司的案子，還需要申報嗎？
我也需要報台灣的稅嗎？

我找到的一些文章都是說，我是哪國人民就報哪國稅，
可是我沒有正式在台灣工作的經驗，這樣也需要報嗎？

謝謝 >.<

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