u/Affectionate-Goat

I've been lurking this subreddit for a while and a bit confused so i just wanted some clarification:

If im a language school student working remotely as contractor in the U.S (less than 28 hrs a week) and I'm mostly living off of savings but send 30% of my paycheck to Japan I'm only taxed on the portion of my paycheck that I send to myself in japan and not on my whole paycheck or on the money i use from my savings account?

For example if I make 3k a month and only send/ withdrawal 1k a month in japan and use money in my savings account for everything else am I only taxed on the 1k a month? Or my entire paycheck regardless if the money stays in the U.S or is withdrawn in japan?