Ive got a question, If i form a LLC or LP in the US, could I use it to pay me a salary/dividends on profits while putting away the rest of it offshore using passthrough taxation?

Im pretty sure that when you form a LLC it can be taxed as a partnership like a Limited Partnership.

What do you think?

Disclaimer: I am neither an attorney nor a CPA. This post does not provide legal or tax advice.

An LLC can elect to be taxed as a partnership, corporation, or sole proprietorship. I don't quite understand your question about paying yourself a salary and moving the rest of the money offshore "using passthrough taxation". If you are, for example, having the LLC taxed as a sole proprietorship or partnership, any profits that are distributed to you as a salary would be taxed as "passthrough" income (usually reported on Schedule C of your personal tax return). Moving the remainder of the LLC's profits offshore really has no advantage in this day and age, as the federal government is all over that scene. Look into FinCEN, especially the Bank Secrecy Act.

If your LLC is taxed as a corporation, you *may* run into an issue regarding undistributed income. Corporations may be subject to a personal holding company tax if certain criteria are met. I don't know if an LLC-taxed-as-a-corporation might also be subject to this. While there is much about tax law that can be found on the Internet, I personally would seek the advice of an attorney or CPA for the best way to proceed.