Start Here: LLC
An LLC is a state law entity — federal tax treats it as a sole proprietorship (single-member) or partnership (multi-member) by default, with the option to elect S-Corp or C-Corp. Almost everything below works whether your LLC has 1 member or 5.
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Guidance, not advice. We explain the rules, we don't assess your situation. Always seek financial or tax advice from a qualified CPA, Enrolled Agent, or tax attorney, or contact the IRS. Read our editorial scope →
Your essential reading list
- LLC vs S-Corp election — The single decision that drives most of your tax bill.
- Schedule C (default SMLLC treatment) — Single-member LLCs without an election file like sole props.
- BOI reporting (FinCEN) — Beneficial Ownership Information reporting and current status.
Calculators you'll actually use
- LLC vs S-Corp Analyzer — Breakeven on the S-Corp election with state overlays (CA 1.5%, IL PPRT, MA $456).
- Should I elect S-Corp? Decision tool — 4-step decision tree before committing to Form 2553.
- Self-Employment Tax Calculator — What you'd pay without electing S-Corp.
- QBI §199A Calculator — How the 20% deduction interacts with S-Corp election.
- State Tax Comparison — LLC franchise tax and PTE tax vary wildly by state.
Background guides
- Worker classification — If you bring on a contractor vs employee in the LLC.
- Reasonable compensation — Required reading before electing S-Corp.
- Multi-state tax — If your LLC operates or has nexus in more than one state.
- QBI §199A deduction — How LLC income qualifies for the 20% pass-through deduction.
Also useful
- Consultants trade guide — If your LLC provides advisory services.
- Software developers trade guide — If your LLC is a dev shop or freelance dev.
- PTET Analyzer — Federal SALT-cap workaround for LLCs taxed as partnerships.
What to do next
Run the LLC vs S-Corp Analyzer with your projected 2026 net profit. If the federal SE-tax savings beat the added admin + payroll cost, read the S-Corp start-here page next.
Different situation? Back to all start-here paths.