Printable Form 2026

IRS Form 966 – Corporate Dissolution or Liquidation

IRS Form 966 – When a corporation decides to wind down operations through dissolution or liquidation, navigating the tax implications is crucial. IRS Form 966, titled “Corporate Dissolution or Liquidation,” plays a key role in this process. This form notifies the IRS of a corporation’s intent to dissolve or liquidate its assets, ensuring compliance with federal tax laws under Section 6043(a) of the Internal Revenue Code. In this comprehensive guide, we’ll cover everything you need to know about IRS Form 966, including who must file it, step-by-step instructions on how to complete it, filing deadlines, and more. Whether you’re a business owner, accountant, or legal professional handling corporate closures, this article provides up-to-date insights based on the latest IRS guidelines as of 2026.

What Is IRS Form 966?

IRS Form 966 is a required filing for corporations or farmers’ cooperatives that adopt a resolution or plan to dissolve the corporation or liquidate any portion of its stock. It’s not a tax return but an informational form that alerts the IRS to significant changes in a company’s structure, such as complete or partial liquidation. The form helps the IRS track corporate events that may trigger tax consequences, like recognizing gains or losses on asset distributions.

Key purposes of Form 966 include:

  • Reporting the adoption of a dissolution or liquidation plan.
  • Providing details on the corporation’s structure, timelines, and tax filing history.
  • Ensuring proper documentation for potential audits or tax adjustments during closure.

Note that this form does not apply to deemed liquidations, such as those under Section 338 elections or elections to be treated as a disregarded entity. For exempt organizations, refer to Form 990 or Form 990-PF instructions instead.

Who Must File IRS Form 966?

Not every business entity needs to file Form 966. It’s specifically for:

  • Domestic corporations (including C corps, S corps, and others filing under Forms 1120, 1120-L, 1120-IC-DISC, or 1120S).
  • Farmers’ cooperatives.
  • Certain foreign corporations that file U.S. tax returns, like Form 1120-F.

Exemptions include:

  • Qualified Subchapter S subsidiaries (use Form 8869 instead).
  • Exempt organizations.
  • Entities undergoing deemed liquidations without a formal resolution.

If your corporation adopts any plan—whether for complete dissolution (e.g., under Section 331) or partial liquidation—you must file. U.S. shareholders of foreign corporations may also need to report via Form 5471.

When to File IRS Form 966?

Timing is critical for compliance. You must file Form 966 within 30 days after adopting the resolution or plan for dissolution or liquidation. This includes any amendments or supplements to the original plan—file an additional Form 966 within 30 days of changes, noting the previous filing date on line 11.

For example, if your board approves a dissolution plan on March 1, 2026, the form is due by March 31, 2026. Delays can lead to penalties, so mark this deadline in your corporate closure checklist.

How to Fill Out IRS Form 966: Step-by-Step Instructions?

Filling out Form 966 is straightforward but requires accurate details. The form (revised October 2016, with no major changes as of 2026) includes basic identification and specific liquidation info. Here’s a step-by-step guide:

  1. Corporation Identification:
    • Enter the corporation’s name, address (including suite or P.O. box if applicable), city, state, ZIP code, and employer identification number (EIN).
    • Check the box for the type of tax return filed (e.g., 1120, 1120S).
  2. Incorporation Details (Lines 1-2):
    • Line 1: Date incorporated.
    • Line 2: Place incorporated (state or country).
  3. Liquidation Type (Line 3):
    • Check “Complete” or “Partial” based on the plan.
  4. Adoption Date (Line 4):
    • Date the resolution or plan was adopted.
  5. Prior Tax Filing Info (Lines 5-6):
    • Line 5: Service Center for the last tax return (or “e-file” if electronic).
    • Line 6: End date of the immediately preceding tax year.
  6. Final Tax Year Details (Lines 7a-7e):
    • Line 7a: End date of the final tax year.
    • Line 7b: Indicate if the final return was part of a consolidated return (Yes/No).
    • If Yes, provide common parent’s name, EIN, and service center.
  7. Shares Outstanding (Line 8):
    • Total common and preferred shares at adoption time.
  8. Amendments (Line 9):
    • Dates of any plan amendments.
  9. Code Section (Line 10):
    • Relevant IRC section (e.g., 331 for liquidation, 332 for subsidiary liquidation).
  10. Prior Filing (Line 11):
    • If amending, enter the date of the previous Form 966.
  11. Attachments:
    • Attach a certified copy of the resolution, plan, and any amendments not previously filed.
  12. Signature:
    • Signed by an authorized officer (e.g., president, treasurer) or fiduciary, with title and date.

Download the latest Form 966 PDF from the IRS website for free. Always double-check for accuracy to avoid processing delays.

Where to File IRS Form 966?

Mail or submit Form 966 to the IRS Service Center where your corporation files its income tax return. If you e-file returns, note that on the form but still send Form 966 via mail. Do not send to the Paperwork Reduction Act address listed in the instructions—that’s for feedback only.

For foreign corporations filing U.S. returns, follow the same process if required under Section 6043(a).

Dissolution or liquidation often involves recognizing gains or losses on asset distributions at fair market value, except in cases like subsidiary liquidations or reorganizations. Remember to file a final income tax return (e.g., Form 1120) and mark it as “final.”

Related forms may include:

  • Form 5471 for foreign corporation info.
  • Form 8869 for S subsidiary elections.
  • Form 1099-DIV for distributions to shareholders.

Consult a tax professional for complex scenarios, as penalties for non-compliance can include fines or extended audits.

Common FAQs About IRS Form 966

What happens if I miss the 30-day filing deadline?

Late filings may result in penalties under IRC Section 6651, starting at 5% per month. File as soon as possible to minimize issues.

Can I file Form 966 electronically?

No, it’s a paper form only. Submit via mail to the appropriate service center.

Is Form 966 required for LLCs or partnerships?

No, it’s for corporations only. Other entities follow different closure procedures.

What if the plan changes after filing?

File an amended Form 966 within 30 days, attaching the updates.

Are there state filing requirements?

Yes, dissolution often requires state-specific filings (e.g., articles of dissolution) before or alongside IRS forms.

Conclusion

Filing IRS Form 966 is a essential step in properly closing a corporation through dissolution or liquidation. By understanding the requirements and following the steps outlined, you can ensure compliance and avoid costly penalties. Always use the most current form from IRS.gov and consider professional advice for your specific situation. For the official PDF, visit https://www.irs.gov/pub/irs-pdf/f966.pdf. Stay informed with IRS updates, as tax rules can evolve— the form was last reviewed on January 23, 2026.