How to Close an S Corp: 6 Tax Steps That Land on the Shareholders

An S corporation pays almost no income tax of its own, and so its closing is taxed, in the main, on the shareholders' returns. The corporation files the forms. The shareholders absorb the results, in the year the assets are sold or distributed, through the same pass-through mechanism that governed every year before it.

That is why closing an S corp is less a filing exercise than a sequencing one. The six steps below are the tax steps, in the order they usually arise, with the statute or instruction behind each. The state dissolution filing appears at the end, where it belongs, because the state will want to know the taxes are handled before it lets the corporation go.

1. The Plan of Liquidation Triggers Form 966

An S corporation is a corporation for this purpose. Once the board and shareholders adopt a resolution or plan to dissolve or liquidate, 26 U.S.C. 6043(a) requires a return within 30 days, and that return is Form 966. An amended plan calls for another within 30 days of the amendment. Qualified subchapter S subsidiaries do not file it.

The form is short. The date on it matters more than anything written in its boxes.

2. Distributing the Assets Is Taxed as Though They Were Sold

The rule most owners do not see coming sits in section 336(a): "gain or loss shall be recognized to a liquidating corporation on the distribution of property in complete liquidation as if such property were sold to the distributee at its fair market value." Section 1371(a) applies subchapter C to S corporations except where subchapter S provides otherwise, so the rule reaches the S corporation too.

Consider what that means for a company with a van, some tooling and a customer list. Handing the van to a shareholder instead of selling it does not avoid the gain; the statute treats the handover as a sale at fair market value. For an S corporation, the recognized gain generally passes through to the shareholders on their K-1s, to be reported on their own returns alongside everything else that year. A closing that looks, from the kitchen table, like the owners taking home their own equipment looks, from the tax return, like a sale nobody negotiated.

The corporation does not pay the tax on the van. It merely reports that the van was, for one legal instant, sold.

Particular histories bring their own additions, a corporation that began life under subchapter C being the one preparers ask about first, though the preparer will know which apply and the list is not improved by being recited here.

The owner's instinct, that moving property from the company to the family should be a non-event, is understandable, and wrong in a way that shows up in April.

3. Basis Decides What the Shareholder Owes on the Stock

The shareholder's side of the liquidation is governed by section 331(a): amounts received "in a distribution in complete liquidation of a corporation shall be treated as in full payment in exchange for the stock." The shareholder, in other words, is treated as selling the shares back for whatever the liquidation delivers, and the gain or loss is measured against stock basis.

Basis is where the S corporation's history lives. Under section 1367, a shareholder's basis rises with passed-through income and falls, though "not below zero," with non-taxable distributions and passed-through losses and deductions. A shareholder who took large distributions in prior years may reach the liquidation with little basis left; one who reinvested may have more than expected. And the gain passed through in step two is itself income that section 1367 adds to basis, which makes the order in which the final year's items are applied a matter of arithmetic for the preparer rather than a formality (a point that a shareholder reconstructing basis from memory, rather than from a decade of K-1s kept in a drawer, is poorly placed to check).

Keep every K-1. The final one is useless without the others.

4. The Final 1120-S Has a Due Date Measured From Dissolution

The corporation files its last Form 1120-S, checks "Final Return" in item H, and checks the "final K-1" box on each shareholder's schedule. Under the 2025 instructions for Form 1120-S, a corporation that has dissolved "must generally file by the 15th day of the 3rd month after the date it dissolved," a deadline keyed to the dissolution rather than the calendar year. Form 4797 accompanies it for business property sold or exchanged, and Form 8594 if the business was sold as a going concern.

Item H also lists "S Election Termination" as its own box. That box is for a different event; a corporation ending its existence reports a final return, and the preparer decides whether anything else on the line applies.

5. Shareholder-Employees Get a Final W-2 Like Anyone Else

Many S corporation owners pay themselves wages. Those wages close out the same way any employee's do: a final Form 941 for the quarter of the last payroll, with the closed-business box checked and the final wage date entered, Form 940 marked final, and W-2s furnished by the due date of that final 941. Withheld taxes on the owner's own paycheck are trust fund taxes like any others, and an unpaid balance reaches the responsible person under section 6672, who in a small S corporation may well be the shareholder writing the checks.

6. The State Consents Last

New York will not file a corporation's certificate of dissolution without the Tax Department's consent attached, under Business Corporation Law section 1004, and the consent follows a review for unfiled returns and unpaid tax; the Department of State's filing fee was $60 as of September 2026. Delaware's section 277 requires franchise taxes paid and a final annual franchise tax report filed before dissolution takes effect.

The federal steps, then, come first. The state waits for them.

Debt the Shareholders Signed For

An S corporation closing with unpaid business debt adds a problem the tax code does not solve: the guaranties shareholders signed. Delancey Street, which settles funder balances, bank lines and similar commercial obligations and is not a law firm, offers a free, confidential review of those balances and works with independently licensed counsel on legal questions. It does not prepare returns or give tax advice; the steps above belong with a CPA or tax attorney, and a company whose debts far exceed its assets may need bankruptcy counsel before any liquidating distribution is made.