How to File Taxes for an LLC: 2026 Guide for Every LLC Type

Quick answer: How to file taxes for an LLC depends on how the IRS classifies it. A single-member LLC reports on Schedule C of the owner's Form 1040. A multi-member LLC files Form 1065 and issues K-1s. An LLC that elected S corporation status files Form 1120-S, and one taxed as a C corporation files Form 1120.

An LLC is a state law entity, not a federal tax category. That is the single most important thing to understand before you file. The IRS taxes your LLC as a sole proprietorship, partnership or corporation, and the forms, deadlines and tax bill all follow from that choice. This guide walks through how to file taxes for an LLC of every type for the 2026 tax year (filed in 2027), with deadlines, a step-by-step checklist and a worked example. If you bill clients through your LLC, clean records start with consistent invoices from our free invoice generator.

Important: This is general information, not tax advice. State rules vary, and an LLC's best tax setup depends on your income, state and plans. Speak to a qualified tax professional about your situation.

How the IRS classifies an LLC

According to the IRS guidance on limited liability companies, a domestic LLC gets a default classification based on its number of members:

• One member: disregarded as separate from its owner for income tax. If the owner is an individual, the LLC is taxed like a sole proprietorship.
• Two or more members: classified as a partnership.

Either type can change its classification. Filing Form 8832 lets an LLC elect to be taxed as a corporation, and filing Form 2553 lets an eligible LLC elect S corporation status. The IRS notes that an 8832 election cannot take effect more than 75 days before it is filed or more than 12 months after. If you are still choosing a structure, our comparisons of LLC vs sole proprietorship and S corp vs LLC explain the trade-offs.

Which form each type of LLC files

LLC tax classification	Federal return	Owner reporting	2026 return due (calendar year)
Single-member (default)	No separate return: Schedule C with Form 1040	Schedule C and Schedule SE	April 15, 2027
Multi-member (default partnership)	Form 1065	Schedule K-1 to each member	March 15, 2027
Elected S corporation	Form 1120-S	Schedule K-1 plus W-2 wages	March 15, 2027
Elected C corporation	Form 1120	W-2 wages and dividends	April 15, 2027

These dates follow the IRS rules in Publication 509: partnership and S corporation returns are due on the 15th day of the third month after the tax year ends, and individual and C corporation returns on the 15th day of the fourth month. March 15, 2027 is a Monday and April 15, 2027 a Thursday, so no weekend shift applies. Form 7004 extends business returns by six months and Form 4868 extends Form 1040, but neither extends the time to pay.

How to file taxes for a single-member LLC

Single-member LLC taxes are the simplest version. The IRS ignores the LLC for income tax, so you report the business as if you were a sole proprietor:

• Schedule C shows gross receipts, cost of goods sold and expenses. Our Schedule C guide for freelancers walks through it line by line, and our list of business expense categories maps costs to each line.
• Schedule SE calculates self-employment tax on your net earnings.
• Form 1040 picks up the net profit, half of the self-employment tax as an adjustment and, if you qualify, the QBI deduction.

Because no one withholds tax from your LLC's income, you are expected to pay during the year with quarterly estimated taxes. The final 2026 installment is due January 15, 2027. Missing installments can trigger an underpayment penalty even if you pay everything in April, so many owners move a fixed share of every client payment into a separate tax savings account the day it arrives.

Self-employment tax for 2026

Self-employment tax is 15.3%: 12.4% for Social Security on net earnings up to the 2026 wage base of $184,500, and 2.9% for Medicare with no cap. It applies to 92.35% of your net profit, and you deduct half of it on Form 1040. This is often the largest piece of a profitable single-member LLC's bill, which is why S corporation elections come up so often.

How to file taxes for a multi-member LLC

A multi-member LLC taxed as a partnership does not pay federal income tax itself. Instead it files an information return and passes profit through to the members:

1. Prepare Form 1065 with the LLC's income, deductions and balance sheet details.
2. Allocate profit or loss to members according to the operating agreement.
3. Issue each member a Schedule K-1 by the Form 1065 due date.
4. Each member reports their K-1 share on their own return and generally pays self-employment tax on it if they are active in the business.

Members owe tax on their share of profit whether or not the LLC actually distributes the cash. Plan distributions so each member can cover their own estimated payments.

Late filing penalty for Form 1065

Partnership returns carry a penalty even when no tax is due. For returns required to be filed in 2027, IRS Rev. Proc. 2025-32 sets the penalty at $260 per partner for each month or part of a month the return is late, for up to 12 months. If you cannot finish by March 15, file Form 7004 on time.

How to file taxes for an LLC taxed as an S corp or C corp

An LLC that elected S corporation status files Form 1120-S. Owners who work in the business must be paid a reasonable salary through payroll, with income tax and FICA withheld. Remaining profit passes through on a K-1 and is not subject to self-employment tax. That is the main saving, offset by payroll costs, quarterly payroll filings and a separate return. To be effective for a given year, the IRS instructions say Form 2553 must be filed no more than 2 months and 15 days after the start of that tax year, or at any time during the prior year.

An LLC taxed as a C corporation files Form 1120 and pays corporate income tax at the entity level. Profits paid out as dividends are taxed again on the owner's return. Few small service businesses choose this, but it can suit companies that plan to reinvest most profit.

For owners deciding between salary and draws, our sibling guide on how to pay yourself as a business owner covers each structure.

Step-by-step: how to file your LLC's 2026 taxes

1. Confirm your classification. Check whether you filed Form 8832 or 2553. If not, you are on the default.
2. Close your books for 2026. Reconcile bank accounts, match every payment to an invoice and chase anything unpaid before December 31 if you use cash accounting.
3. Collect 1099s and issue your own. Clients may send 1099-NEC forms, and if you paid contractors $2,000 or more in 2026 you may need to file them. See how to file 1099-NEC.
4. Categorize expenses. Group costs to match the return's expense lines and keep receipts.
5. Prepare the right return. Schedule C, Form 1065, Form 1120-S or Form 1120.
6. Issue K-1s to members or shareholders if you file 1065 or 1120-S.
7. File and pay by the deadline, or file an extension and still pay what you expect to owe.
8. File state returns and annual reports. Most states have their own LLC fee or report, separate from income tax.
9. Set up 2027 estimated payments based on this year's result.

Worked example: single-member vs two-member LLC

Single-member LLC. Dana runs a design studio as a single-member LLC with no elections. In 2026 she invoiced $95,000 and had $23,000 of deductible expenses, so her Schedule C net profit is $72,000.

• Net earnings for self-employment: $72,000 x 92.35% = $66,492.
• Self-employment tax: $66,492 x 15.3% = $10,173.28 (all under the $184,500 wage base).
• Deduction for half of SE tax on Form 1040: $5,086.64.

Dana's income tax is then figured on her total income after that adjustment, her standard or itemized deduction and any QBI deduction. Our sibling post on 2026 federal tax brackets shows the rates.

Two-member LLC. Omar and Lena own a consulting LLC 60/40 with no elections. Its 2026 profit is $120,000. The LLC files Form 1065 and issues K-1s showing $72,000 for Omar and $48,000 for Lena. Each reports their share on their own return and pays self-employment tax on it. If the LLC filed Form 1065 three months late without an extension, the penalty would be 2 partners x $260 x 3 months = $1,560.

Records and invoices that make LLC taxes easier

Whatever your classification, the IRS expects you to support income and deductions. Good habits include:

• Invoicing under the LLC's legal name, with the LLC's EIN where appropriate, so income ties to the entity and you do not have to share your Social Security number with clients.
• Using sequential invoice numbers so gaps are easy to spot and every deposit matches a sale.
• Keeping business and personal money in separate accounts, which also supports the liability protection an LLC is meant to give you.
• Recording owner draws and contributions separately from income and expenses, so your profit figure is not distorted.
• Keeping invoices, receipts, mileage logs and returns for as long as the IRS can examine them, and longer for asset purchases you are still depreciating.

If you are audited, the IRS will compare your bank deposits with the income you reported. A numbered invoice for every deposit is the quickest way to show that a transfer from your personal account was a contribution, not unreported sales.

State taxes, annual fees and other filings

Federal returns are only part of LLC compliance. Plan for these as well:

• State income tax. Most states with an income tax follow the federal classification, so a single-member LLC's profit appears on the owner's state return and a multi-member LLC files a state partnership return. Some states also allow or require the LLC to pay tax at the entity level.
• Annual reports and fees. Many states require an annual or biennial report with a filing fee, and some charge a minimum franchise tax even when the LLC makes no profit. Missing it can put the LLC out of good standing.
• Sales tax. If you sell taxable goods or services, you may need a sales tax permit and regular returns, separate from income tax.
• Payroll filings. If the LLC has employees, or is taxed as an S corporation paying an owner salary, quarterly Form 941 and annual W-2 filings apply.
• Information returns. If the LLC paid contractors $2,000 or more during 2026, 1099-NEC forms are due by February 1, 2027.

Check your state's revenue department and secretary of state websites for current fees and due dates, since these change more often than federal rules.

Common LLC tax mistakes to avoid

• Assuming the LLC pays its own tax. Default LLCs pass profit to owners, who pay on their personal returns.
• Missing the March 15 deadline for Form 1065 or 1120-S, which is a month earlier than personal returns.
• Taking an S election without running payroll. S corporation owners who work in the business need reasonable wages.
• Forgetting state fees. Many states charge an annual LLC fee even with no profit.
• Skipping estimated payments in the first profitable year.

Create your LLC invoices

Filing taxes for an LLC is far easier when every sale is backed by a numbered invoice in the LLC's name. Use our US invoice generator or browse corporate invoice templates, then download a PDF in seconds with the free invoice generator. If you have not formed your company yet, start with our guide on how to start an LLC.