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  1. Limited liability company (LLC) - Internal Revenue Service

    Oct 9, 2025 · Review information about a Limited Liability Company (LLC) and the federal tax classification process.

  2. Starting a business - Internal Revenue Service

    Jul 17, 2025 · Find federal tax information for people starting a business, and information to assist in making basic business decisions.

  3. Single member limited liability companies | Internal Revenue Service

    Review information about the Limited Liability Company (LLC) structure and the entity classification rules related to filing as a single-member limited liability company.

  4. Operating a business | Internal Revenue Service

    This section provides procedures for getting out of business, including what forms to file and how to handle additional revenue received or expenses you may incur.

  5. Get an employer identification number | Internal Revenue Service

    If you are forming a legal entity (LLC, partnership, corporation or tax exempt organization), form your entity through your state before you apply for an EIN. If you don’t form your entity with …

  6. When to get a new EIN - Internal Revenue Service

    Sole proprietors Corporations (including tax-exempt organizations) Partnerships Limited liability company (LLC) Estates Trusts

  7. Business structures - Internal Revenue Service

    Oct 2, 2025 · Your business structure determines which income tax return form you file. Consider legal and tax issues when selecting a business structure.

  8. Partnerships | Internal Revenue Service

    A partnership must file an annual information return to report the income, deductions, gains, losses, etc., from its operations, but it does not pay income tax.

  9. Election for married couples unincorporated businesses | Internal ...

    The election permits certain married co-owners to avoid filing partnership returns, provided that each spouse separately reports a share of all of the businesses’ items of income, gain, loss, …

  10. Business taxes | Internal Revenue Service

    Dec 6, 2025 · Generally, you must pay SE tax and file Schedule SE (Form 1040 or 1040-SR) if either of the following applies. If your net earnings from self-employment were $400 or more.