If I hire myself as a contractor in my home country, do I have to pay taxes on these incomes to US gov?
For personal income, your country will typically have a reciprocal agreement with the US so that you don't get double-taxed. Check with your local tax body for the exact details.
(Sorry, I know nothing about the other questions.)
For personal income, your country will typically have a reciprocal agreement with the US so that you don't get double-taxed. Check with your local tax body for the exact details.
(Sorry, I know nothing about the other questions.)