A corporation generally files IRS Form 966 within 30 days after adopting a resolution or plan to dissolve the corporation or liquidate any of its stock.
Form 966 is an early information filing, not the corporation’s final income tax return. Dissolution can also require a final Form 1120 or 1120-S, shareholder reporting, employment-tax returns, information returns, asset-sale forms, state filings, and payment of remaining liabilities.
Last reviewed: July 30, 2026. This article is for general educational purposes and does not replace advice from a qualified tax, legal, financial, or student-aid professional.
What Is IRS Form 966?
The form reports the corporation’s name, EIN, place and date of incorporation, date the plan was adopted, relevant Internal Revenue Code section, tax-return information, and expected final-return date. A certified copy of the resolution or plan generally must be attached.
If the plan is amended or supplemented after the original filing, an additional Form 966 and certified amendment generally must be filed within 30 days. The filing does not close the IRS business account or cancel the EIN.
Who Should Use IRS Form 966?
- A domestic corporation adopting a plan of complete or partial liquidation.
- A corporation formally resolving to dissolve under state law.
- An S corporation liquidating its assets or stock.
- A farmer’s cooperative covered by the form’s filing rule.
- Not a sole proprietorship merely ceasing operations or an LLC that is not classified as a corporation for federal tax purposes.
How to Use or Complete IRS Form 966
- Have the board and shareholders adopt the dissolution or liquidation resolution required by governing law and documents.
- Record the adoption date and identify whether the plan involves complete liquidation, partial liquidation, or another applicable provision.
- Complete the corporate identity, incorporation, return, assessment, and final-return fields.
- Attach a certified copy of the resolution or plan, including amendments already adopted.
- File Form 966 with the IRS center where the corporation files its income tax return within 30 days after adoption.
- Coordinate final federal, state, payroll, information, creditor, and shareholder filings through the wind-down.
The 30-Day Form 966 Deadline
The filing period generally begins when the corporation adopts the resolution or plan, not when the last asset is sold, the final distribution is made, or the state accepts dissolution documents.
Because board and shareholder approvals can occur on different dates, the minutes and governing law should clearly identify when the plan became adopted. Do not delay Form 966 while waiting for the liquidation to finish.
Documents to Attach
Attach a certified copy of the resolution or plan. The copy should show the terms approved and the date of adoption. A corporate officer or other authorized custodian can certify the copy according to the organization’s procedures.
If the plan is amended, file another Form 966 with a certified copy of the amendment within the applicable 30-day period. Preserve minutes, consents, valuations, sale contracts, debt settlements, and distribution schedules.
Tax Work Beyond Form 966
- Report asset sales and any corporate-level gain, loss, depreciation recapture, or built-in gains.
- File the final Form 1120 or Form 1120-S and check the final-return box.
- Provide final Schedule K-1, Forms W-2, Forms 1099, and other information returns.
- File final Forms 941, 940, 945, or other employment and withholding returns and close payroll accounts.
- Report shareholder liquidating distributions and supply basis information.
- Complete state dissolution, tax clearance, unclaimed-property, creditor, license, and account-closure procedures.
Corporate and Shareholder Consequences
A C corporation generally recognizes gain or loss when distributing property in complete liquidation, and shareholders generally recognize gain or loss based on the value received and stock basis. S corporation results flow through but can involve built-in-gains tax and shareholder basis limitations.
Liabilities attached to distributed property, installment obligations, related-party transfers, and tax-free reorganization provisions can change the result. Model the full plan before assets are transferred.
Before You File or Submit
- Use the current official version. Tax forms, addresses, thresholds, and electronic filing procedures can change. Download the form or instructions from the issuing agency immediately before use.
- Match names and taxpayer identification numbers. Confirm that legal names, SSNs, ITINs, EINs, plan numbers, and tax periods agree with the related return and agency records.
- Gather supporting records first. Keep calculations, statements, notices, authorizations, appraisals, receipts, and other documents that support every entry.
- Check the deadline and delivery method. An extension to file does not necessarily extend the time to pay. Private carriers also may require a different street address than USPS.
- Sign where required. An unsigned paper form, missing consent, or incomplete electronic authentication can delay or invalidate a submission.
- Keep a complete copy. Retain the filed form, attachments, confirmation number, proof of mailing, fax confirmation, and payment record.
Common Mistakes to Avoid
- Starting the 30-day count from the state dissolution date instead of plan adoption.
- Filing without a certified resolution or plan.
- Assuming Form 966 is the final corporate return.
- Failing to file another Form 966 for a later amendment.
- Distributing assets before reserving for tax, payroll, creditor, and professional costs.
- Ignoring shareholder stock basis and information reporting.
What Happens After Submission?
The IRS receives notice of the plan, but the corporation remains responsible for all required returns and tax. Form 966 does not produce an acceptance letter that completes the dissolution.
Retain proof of filing with permanent corporate records. Finish the wind-down under both federal tax law and the state law governing the entity.
Processing time is not the same as a legal deadline. Do not submit a duplicate merely because an acknowledgement or response has not arrived. First check the relevant online status tool, confirmation record, or official contact channel. If the agency requests more information, respond by the date and method stated in the notice.
Records to Keep
Keep a copy of the completed submission and all documents used to prepare it. Your file should also contain the tax-year or period involved, the date submitted, the delivery method, any confirmation or tracking number, and notes about later agency correspondence. Retention periods depend on the form and issue, so follow the specific instructions and keep records longer when they may remain material to an audit, refund claim, basis calculation, collection case, election, or amended return.
Frequently Asked Questions
Does Form 966 close an EIN?
No. EINs are not canceled or reused. The IRS business account is closed through final returns and the account-closure procedure.
Is Form 966 required for an LLC?
It depends on federal classification. An LLC taxed as a corporation may be covered; a disregarded entity or partnership generally is not filing Form 966 merely because it winds up.
What if the plan changes?
File another Form 966 with a certified copy of the amendment or supplement, generally within 30 days after it is adopted.
Where is Form 966 filed?
Generally with the IRS service center where the corporation files its income tax return. Confirm the current form instructions.
Official Resources
Bottom line: File within 30 days of adopting the plan, attach a certified copy, report later amendments, and coordinate Form 966 with every final corporate, shareholder, payroll, and state obligation.