How do I file a final tax return for an LLC?

The state learns your LLC closed when you file the dissolution. The IRS learns it only when you file a return marked final. Miss that step and the IRS keeps expecting a return every year, and the notices that follow are a nuisance long after the company is gone.

This guide walks through which return counts as final, where the box is, when it's due, and what else closes out with it. It's general information, not tax advice; a preparer who knows your books should file the actual return. DissolveYourBusiness.com files the state dissolution only. We don't prepare tax returns, and nothing we file substitutes for the steps below.

Which form is your LLC's final return?

An LLC doesn't have its own federal return. It files according to how it's taxed, and that decides which final return you're preparing.

Single-member LLC (disregarded entity): there's no separate business return. You report the last year of activity on Schedule C with your Form 1040, plus Schedule SE if net self-employment earnings were $400 or more, and Form 4797 if you sold business property. Schedule C has no 'final' box; you simply stop attaching it after the last year the business had activity.

Multi-member LLC taxed as a partnership: Form 1065 for the year the LLC closes. Check the 'final return' box near the top of page one, below the name and address, and check the 'final K-1' box on each partner's Schedule K-1.

LLC that elected S corporation status: Form 1120-S for the year of closing, with the final-return box in Item H and the 'final K-1' box on each shareholder's Schedule K-1.

LLC that elected C corporation status: Form 1120 for the year of closing, with the 'final return' box checked.

If you're not sure how the LLC is taxed, look at last year's return. Whatever form you filed then is the form you file now, once more, marked final.

What the 'final return' box actually does

It closes the filing requirement on the IRS's side. Once the IRS processes a return flagged final, it stops looking for next year's return under that EIN. Without it, the IRS record still shows an active filer, and the LLC can pick up failure-to-file notices for years it never operated. Partnerships and S corporations face per-owner, per-month penalties for late or missing returns, so an unmarked final return is an expensive oversight even when no tax is due.

The 'final K-1' box does the same job for each owner: it tells the IRS this is the last K-1 they'll receive from the entity, and it tells the owner to close out their basis.

When is the final return due?

The final tax year is a short year that ends on the day the LLC terminates, so the due date is measured from that day, not from December 31.

For a partnership, the IRS instructions say the tax year ends on the date of termination and the return is due by the 15th day of the 3rd month following the date the tax year ended. An LLC taxed as a partnership that terminates on June 30 owes its final Form 1065 by September 15.

For an S corporation, the instructions say a corporation that has dissolved must generally file by the 15th day of the 3rd month after the date it dissolved. For a C corporation, it's the 15th day of the 4th month after the date it dissolved. In both cases an extension is available on Form 7004.

For a single-member LLC, nothing changes: Schedule C goes in with your personal return by the usual April deadline.

One practical point: 'terminated' or 'dissolved' for tax purposes tracks when the business actually stopped operating and wound up, which may not be the day the state stamps your dissolution. If the two dates are far apart, get a preparer to pin down the year-end before you file.

Form 966 if your LLC is taxed as a corporation

An LLC that elected S or C corporation status is a corporation in the IRS's eyes, so Form 966, Corporate Dissolution or Liquidation, applies. It's due within 30 days after the resolution or plan to dissolve is adopted, it goes to the IRS service center where the corporation files its income tax return, and you attach a certified copy of the resolution or plan. It's an information filing, not a return, and it doesn't replace the final Form 1120-S or 1120.

An LLC taxed as a partnership or a disregarded entity doesn't file Form 966. The form's own instructions also say not to file it for a deemed liquidation, such as an election to be treated as a disregarded entity.

Payroll: final Form 941 or 944, Form 940, W-2s and 1099s

If the LLC had employees, the last payroll needs its own set of final filings.

Form 941 (or Form 944 if you file annually) for the quarter in which you paid final wages. Check the box that says the business has closed and enter the date final wages were paid: line 17 on Form 941, line 14 on Form 944.

Form 940, the annual FUTA return, for the calendar year in which you paid final wages. Check box 'd' in the Type of Return section to mark it final.

Forms W-2 to each employee for that calendar year, with Form W-3 transmitting Copy A to the Social Security Administration. When a business terminates, the W-2 deadlines move up: the General Instructions for Forms W-2 and W-3 tie them to the due date of your final Form 941 or 944 rather than the usual January 31, so read that section or ask your payroll provider before you assume you have until next year.

Form 1099-NEC to any contractor you paid $2,000 or more for services during the closing year (the threshold rose from $600 for tax years beginning after 2025), transmitted with Form 1096 if you file on paper.

Deposit any employment tax still owed. The IRS wants employment tax records kept for at least four years after the tax is due or paid.

State returns and state tax accounts

Most states with an income or franchise tax want a final return too, and some won't process the dissolution until the tax side is settled. Texas is the clearest example: to file a Certificate of Termination you first file the final franchise tax report and pay what's due, then request a Certificate of Account Status (Form 05-305) from the Comptroller, and that certificate goes to the Secretary of State with the termination. New Jersey requires tax clearance from its Division of Taxation. California charges nothing to cancel an LLC but the Franchise Tax Board still expects a final return.

Separately, close the accounts the LLC opened with the state: sales and use tax permits, withholding accounts, unemployment insurance. Each has its own final-return or close-account form, and none of them close automatically when the entity dissolves.

How the final return fits with the state dissolution

The clean order is: stop operating and wind up, file the state dissolution (or, in a tax-clearance state, clear taxes first, then file), and prepare the final returns once the books for the short year are closed. The federal due date keys off the date the business terminated, so don't wait for the state's stamped copy if that would push you past the deadline; the return can be filed before the state processes the paperwork.

If you'd like the state filing off your plate, DissolveYourBusiness.com prepares and files the dissolution for a flat $75 plus the state fee, in any state, within 3-5 business days. Your accountant handles the returns; we handle the state.