Answer
All nonresidents must file IRS Form 8843 regardless of whether they had U.S. source income. Those who did earn U.S. source income must also file IRS Form 1040‑NR.
All nonresidents must file IRS Form 8843 regardless of whether they had U.S. source income. Those who did earn U.S. source income must also file IRS Form 1040‑NR.