Which Tax Return Does Your LLC File?
An LLC is a legal entity formed under state law. Its federal income tax return depends on its owners and any valid tax elections, rather than the letters “LLC” in its name. Start with the filing classification before choosing an LLC tax preparation service.
| LLC situation | Usual federal filing route | What to confirm |
|---|---|---|
| One individual owner, no corporate election | Owner’s return, commonly Schedule C, E or F as appropriate | Business activity and ownership |
| Two or more members, no corporate election | Generally Form 1065 and partner Schedule K-1s | Members, ownership changes and any exceptions |
| Valid S corporation election | Form 1120-S and shareholder Schedule K-1s | Election status and effective date |
| C corporation classification | Form 1120 | Classification election and effective date |
This table describes common domestic LLC situations. Foreign ownership, changes in membership and other special facts can require additional review.
Single-Member LLC Tax Preparation
A single-member LLC that has not elected corporate treatment is generally disregarded as separate from its owner for federal income tax. For an individual owner, operating business activity commonly goes on Schedule C; rental or farming activity may belong on Schedule E or F. An LLC owned by another entity reports through that owner under the applicable rules.
Disregarded status does not remove every separate filing obligation: employment taxes and certain excise taxes treat the LLC separately. Bring payroll and other filing records as well as income and expense records. See our Schedule C preparation and rental return preparation options where applicable.
Multi-Member LLC and Partnership Returns
A domestic LLC with two or more members generally defaults to partnership classification unless it elects corporate treatment. An LLC taxed as a partnership generally files Form 1065 and provides Schedule K-1s to its members. Gather ownership details, contributions, distributions and the operating agreement for the return review.
Our Colorado partnership return preparation page explains the available preparation scopes. Federal classification, state activity and the tax year help determine the state filings to review.
LLCs Taxed as S Corporations or C Corporations
An LLC may elect corporate classification. An eligible LLC can elect S corporation treatment using Form 2553; when that election meets the applicable requirements, a separate Form 8832 is generally unnecessary. An LLC classified as a C corporation generally files Form 1120; one taxed as an S corporation generally files Form 1120-S.
Confirm the election’s effective date and retain IRS correspondence before choosing a return service. Review S corporation elections and classification questions, S corporation return preparation or C corporation return preparation as appropriate.
Records to Gather Before Your LLC Tax Return
- Prior federal and state returns, tax elections and IRS acceptance or other correspondence.
- Formation documents, operating agreement and dates of ownership or classification changes.
- Year-end income statement, general ledger, balance sheets and reconciliations.
- Member contributions, distributions, loans and available basis records.
- Payroll reports, asset purchases and disposals, financing records and tax payments.
- Details of business activity in each state and any foreign ownership or transactions.
Request a scope review if the prior return and current classification do not agree or records are incomplete. Classification changes, election corrections and bookkeeping cleanup can require work beyond routine return preparation.
Frequently Asked Questions
Does every LLC file a separate federal income tax return?
No. A disregarded single-member LLC generally reports through its owner. Partnership or corporate classification generally leads to a separate entity income tax return. Employment and other reporting obligations must be considered separately.
Does getting an EIN make an LLC an S corporation?
No. An EIN identifies the business; it does not establish an S corporation election. Review the election documents, effective date and IRS correspondence.
What if members joined or left during the year?
Provide the dates and transaction records before preparation begins. Changes in ownership can affect classification or require additional return work.
Official LLC Classification References
- IRS overview of LLC classification
- IRS single-member LLC guidance
- IRS Publication 3402: Taxation of Limited Liability Companies
- IRS Form 2553 instructions
Updated November 2, 2026. General information; filing requirements depend on the entity’s facts, elections and applicable tax year.
Related Tax Resources
- LLC Tax Preparation
- Partnership Tax Return Preparation in Denver
- S Corporation Tax Return Preparation (Form 1120-S)
Ready to Get Started?
Schedule a consultation with CPA of Denver to discuss your individual or business tax filing needs.
Have a Specific CPA Question?
Book a $350 CPA Consultation for tax, accounting or financial-statement questions. The allowance covers up to one hour total for document review, preparation and the telephone call. Written reports and implementation require a separate scope. For availability or service-fit questions, send a brief inquiry.