A C corporation generally files its own corporate income tax return. An S corporation is a corporation that has elected special tax treatment and generally files an informational return, with income passed through to its shareholders. A partnership generally files an informational return with income passed through to its partners.
An LLC is a legal form, not a single federal tax category. Unless it elects corporate classification, a single-member LLC is generally disregarded as separate from its owner for federal income tax purposes. It is generally treated as a separate entity for employment taxes and certain excise taxes. A multi-member LLC is generally treated as a partnership unless it elects corporate classification. State-law formation does not by itself determine the LLC’s federal income tax classification, so we confirm the applicable treatment before preparing anything.
Single-member limited liability companies (IRS)