How to Report Sale of Goodwill on Form 1120-S

To report the sale of goodwill on Form 1120-S, the S corporation calculates the gain on Form 4797, carries the result to Schedule K, and passes each shareholder’s pro rata share through on Schedule K-1. The corporation itself generally pays no federal income tax on the gain; the tax lands on each shareholder’s Form 1040.¹ Where exactly the gain goes on Form 4797 depends on whether the goodwill was built internally or purchased and amortized, and a former C corporation may owe a separate corporate-level tax on top.

First, Confirm It’s Entity Goodwill

Only entity goodwill belongs on Form 1120-S. Entity goodwill is a corporate asset built from the business’s reputation, customer base, location, and operating systems. Personal goodwill belongs to the shareholder individually, arising from that person’s reputation, relationships, and skills. The corporation never owned it, so a sale of personal goodwill is not reported on the 1120-S at all; the shareholder reports that piece directly on their own Schedule D as long-term capital gain (assuming a holding period over one year).

The asset purchase agreement should allocate separate dollar amounts to entity goodwill and personal goodwill, supported by an independent appraisal. Without that documentation, the IRS is likely to recharacterize the whole amount as entity goodwill and push the entire gain onto the corporate return.

Calculate the Gain at the Corporate Level

Gain equals the sale price allocated to entity goodwill minus the S corporation’s adjusted tax basis in it. How you get to that basis, and how the gain is characterized, depends on where the goodwill came from.

Internally Generated Goodwill

Goodwill the S corporation built organically has a tax basis of zero because the company never paid a specific price for it. The full amount allocated to entity goodwill in the sale is taxable gain, and because there was no prior amortization, there is nothing to recapture. The entire gain is Section 1231 gain.

Purchased Goodwill and Section 1245 Recapture

If the S corporation acquired the goodwill by buying another business in a taxable transaction, it’s a Section 197 intangible amortized ratably over 15 years.² Basis at sale equals original cost minus amortization taken.

Prior amortization gets recaptured. The IRS treats amortized Section 197 goodwill as Section 1245 property, so on sale the previously deducted amortization comes back as ordinary income rather than capital gain.³ The ordinary income portion equals the lesser of total prior amortization or total gain realized. Only the gain above that recapture amount is Section 1231 gain eligible for capital gains treatment.

When multiple Section 197 intangibles are sold in the same transaction, they’re treated as a single asset for recapture purposes. Losses on some intangibles offset gains on others before the recapture calculation runs.³

Allocate the Purchase Price on Form 8594

Both buyer and seller must file Form 8594, Asset Acquisition Statement, whenever a group of assets making up a trade or business changes hands and goodwill could attach to the deal.⁴ The form uses the residual method: the total purchase price fills Class I (cash) first, then Class II (actively traded securities), Class III (debt instruments and receivables), Class IV (inventory), Class V (other tangible and intangible assets), and Class VI (Section 197 intangibles other than goodwill). Whatever is left flows to Class VII, goodwill and going concern value.⁵

The seller reports the amount allocated to entity goodwill in Part II. Form 8594 is filed as an attachment to Form 1120-S for the tax year of the sale. If your allocation doesn’t match the buyer’s, expect IRS questions. Failing to file the form triggers information-return penalties under Section 6721.⁶

Fill Out Form 4797

Form 4797 is where the sale actually gets reported at the corporate level. Which part you use depends on whether there’s amortization to recapture.

For purchased goodwill with prior amortization, the sale goes in Part III. Lines 19 through 24 hold the sale details, and line 25 calculates the Section 1245 recapture.⁷ The recaptured amount is ordinary income. Any remaining gain above the recapture amount is Section 1231 gain and moves to Part I of the same form.

For internally generated goodwill with no amortization history, skip Part III and report the sale directly in Part I as a Section 1231 transaction.⁷

In Part I, the goodwill gain gets netted with all other Section 1231 gains and losses for the year. A net Section 1231 gain is generally treated as long-term capital gain; a net Section 1231 loss is ordinary. Watch the five-year look-back: current Section 1231 gains are recharacterized as ordinary income to the extent of unrecaptured net Section 1231 losses claimed in the prior five tax years.

Pass the Gain Through on Schedule K and K-1

The net Section 1231 gain or loss from Form 4797 goes to Line 9 of Schedule K on Form 1120-S.⁸ Ordinary income from Section 1245 recapture flows separately to the ordinary income line.

Each shareholder then gets a Schedule K-1 showing their pro rata share. The Section 1231 gain or loss appears in Box 9 of the K-1.⁸ Some older references send this amount to Box 10; that’s wrong under current instructions. Box 10 is for other categories of income, and its Code L is currently reserved for future use.⁹

Built-in Gains Tax for Former C Corporations

If the S corporation used to be a C corporation, the goodwill sale can trigger a corporate-level tax under Section 1374 that most S corps never see. The built-in gains tax applies to appreciated assets sold within five years of the S election.¹⁰

The tax hits the net recognized built-in gain, meaning the appreciation that existed at the date of the S election, not the full gain measured from acquisition. The rate is the highest corporate rate under Section 11(b), currently 21%.¹⁰ Net operating loss and business credit carryforwards from the C years can offset it. Once the five-year recognition period passes, the tax no longer applies. The same rule reaches assets the S corporation acquired from a C corporation in a carryover-basis transaction.

Where the Tax Actually Gets Paid: Shareholder Form 1040

The shareholder takes the K-1 amounts and finishes the reporting on their personal return.

The Box 9 Section 1231 amount goes to the shareholder’s own Form 4797, line 2, column (g). Across columns (b) through (f), the shareholder writes “From Schedule K-1 (Form 1120-S)” instead of listing individual property details.¹¹ The shareholder combines it with any personal Section 1231 activity and applies their own five-year look-back.

A net Section 1231 gain moves from the shareholder’s Form 4797 to Schedule D of Form 1040 and receives long-term capital gains treatment at 0%, 15%, or 20% depending on taxable income and filing status.¹² A net Section 1231 loss is ordinary and goes to Schedule 1, offsetting wages, interest, and other ordinary income. Any Section 1245 recapture flowing through from the K-1 is taxed at the shareholder’s regular income tax rates.

If the shareholder also sold personal goodwill in the same deal, that gain is separate from anything on the K-1 and goes straight to Schedule D as long-term capital gain, bypassing Form 4797 and the Section 1231 netting entirely.

Shareholders with modified adjusted gross income over $200,000 (single) or $250,000 (married filing jointly) may owe an additional 3.8% Net Investment Income Tax.¹³ Whether the goodwill gain counts as net investment income depends on participation. Shareholders who materially participated in the business generally escape the surtax on the gain; passive owners generally do not.¹⁴ The income thresholds are not indexed for inflation.

One bookkeeping item to track: the flow-through gain increases the shareholder’s basis in the S corporation stock, which reduces the capital gain recognized on any later sale or liquidation of the shares. The basis adjustment picks up the shareholder’s pro rata share of every K-1 item, including the Section 1231 gain and any ordinary recapture.

Installment Sales

If the S corporation receives at least one payment after the close of the tax year of the sale, the transaction is an installment sale reported on Form 6252.¹⁵ Part I sets the gross profit percentage in the year of sale; Part II uses that percentage to recognize gain each year. The form must be filed for the sale year and every subsequent year until the final payment, even years with no payment.

Section 1245 recapture cannot be deferred. Any ordinary income from recapture is fully taxable in the year of sale regardless of when the buyer’s payments actually arrive.¹⁵

Two watch-outs on larger deals. If the sale price exceeds $150,000 and total outstanding non-dealer installment obligations exceed $5 million at year-end, the S corporation owes interest on the deferred tax under Section 453A.¹⁶ If the buyer is a related party, Part III of Form 6252 requires additional reporting in the year of sale and the following two years.

Each year, the recognized installment gain flows through Schedule K and the K-1 to shareholders on the same lines a lump-sum sale would use, and each shareholder pays tax on their share at whatever rates apply to them personally.

1
Internal Revenue Service. S Corporations
2
Office of the Law Revision Counsel. 26 USC 197 – Amortization of Goodwill and Certain Other Intangibles
3
Office of the Law Revision Counsel. 26 USC 1245 – Gain From Dispositions of Certain Depreciable Property
4
Internal Revenue Service. About Form 8594, Asset Acquisition Statement Under Section 1060
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Internal Revenue Service. Instructions for Form 8594
6
Office of the Law Revision Counsel. 26 USC 6721 – Failure to File Correct Information Returns
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Internal Revenue Service. Instructions for Form 4797 (2025)
8
Internal Revenue Service. Instructions for Form 1120-S (2025) – Line 9 Net Section 1231 Gain (Loss)
9
Internal Revenue Service. Shareholder’s Instructions for Schedule K-1 Form 1120-S (2025)
10
Office of the Law Revision Counsel. 26 USC 1374 – Tax Imposed on Certain Built-in Gains
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Internal Revenue Service. Shareholder’s Instructions for Schedule K-1 Form 1120-S (2025) – Box 9
12
Internal Revenue Service. Topic No. 409, Capital Gains and Losses
13
Internal Revenue Service. Topic No. 559, Net Investment Income Tax
14
Internal Revenue Service. Questions and Answers on the Net Investment Income Tax
15
Internal Revenue Service. Form 6252 Installment Sale Income (2025)
16
Internal Revenue Service. Publication 537 (2025), Installment Sales