
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.
Employer identification number | Internal Revenue Service
Dec 16, 2025 · Form your entity first: If you’re creating a legal entity (LLC, partnership, corporation), register it with your state before you apply for an EIN. This includes tax exempt …
Instructions for Form 1120-S (2025) | Internal Revenue Service
Taxes and Licenses Enter taxes and licenses paid or incurred in the trade or business activities of the corporation, unless they are reflected elsewhere on the return.
Limited liability company (LLC) - Internal Revenue Service
Oct 9, 2025 · Review information about a Limited Liability Company (LLC) and the federal tax classification process.
Guide to business expense resources | Internal Revenue Service
Feb 19, 2025 · Explore IRS resources to understand and manage business expenses effectively, ensuring compliance with tax regulations and maximizing financial efficiency.
Sole proprietorships - Internal Revenue Service
Aug 8, 2025 · A sole proprietor is someone who owns an unincorporated business by themselves. If you are the sole member of a domestic limited liability company (LLC) and elect to treat the …
Businesses | Internal Revenue Service
Aug 19, 2025 · Limited Liability Company or LLC A corporate structure whereby the members of the company cannot be held personally liable for the company's debts or liabilities.
If you are the sole member of a domestic LLC, file Schedule C (or Schedule E or F, if applicable) unless you have elected to treat the domestic LLC as a corporation.
Tax Exempt Organization Search | Internal Revenue Service
Home File Charities and Nonprofits Search for Charities Search for Tax Exempt Organizations Tax Exempt Organization Search
Estimated taxes - Internal Revenue Service
Jan 28, 2026 · For recent developments, see the current year Publication 505, Tax Withholding and Estimated Tax. Taxes must be paid as you earn or receive income during the year, either …