@Gordo5 , I am lost as to why you are considering your entity / sole proprietorship to be a Foreign Disregarded Entity. Generally, an FDE is a foreign entity that does business in the USA. Because they are not a US person / entity, how do you tax them. That is where FDE allows the partner/ branch in the USA to be taxed on US sourced income either as a Schedule-C or as C-Corp.
Your case is no different than a self-employed US person earning in a foreign land. Thus you use Schedule-C and COGS etc. to work out your net income to be taxed by the USA. You are also liable for SECA ( FICA times 2 ). Any taxes on income by the Foreign taxing authority may be eligible for Foreign Earned Income Exclusion or Foreign Tax Credit / deduction ( with SALT limits ).
Does this make sense ?
Is there more I can do for you ?
