A single member LLC is disregarded for US federal income tax purposes. Income, gain, deduction and loss of a single member LLC is reported directly on the income tax return of its owner. The single member LLC does not file an income tax return with the IRS. A US Person who is the sole owner of the LLC will report all worldwide income,gain, deduction and loss on her income tax return. A non-US Person that owns a single member LLC doing business in the US will be treated as doing business in the US, if the LLC is engaged in a US trade or business.