Many owners agree on a headline number first and discover the tax bill later. By then, the structure is often fixed.
This guide covers U.S. federal tax treatment of a U.S. S corporation. Australian-resident shareholders face extra questions on residency, foreign income reporting, treaty relief, foreign tax offsets and currency. All dollar amounts are U.S. dollars.
Key Takeaways
- Stock sale, asset sale or deemed asset sale changes the character, timing and amount of tax.
- Buyers often favour a basis step-up; sellers often prefer stock-sale treatment.
- Pass-through status does not remove tax on a sale.
- Early diligence on the S election, ownership records and allocation protects value.
Can You Sell an S Corporation? Understand the Available Structures
Yes. Shareholders can sell their stock, the corporation can sell its assets, or the parties can use a deal that is legally a stock sale but taxed as an asset sale.
Stock sale
Shareholders transfer their shares to the buyer. Each shareholder's gain or loss is generally the amount realised minus adjusted stock basis. The buyer typically inherits the company's liabilities and tax history.
Asset sale
The corporation sells selected or substantially all of its assets. Gain or loss is worked out asset by asset and generally passes through to shareholders on Schedule K-1 before proceeds are distributed.
Deemed asset sale
A Section 338(h)(10) election lets a stock purchase be treated as an asset sale followed by a liquidation. Key conditions, per the IRS Form 8023 instructions:
- The buyer must be a corporation making a qualified stock purchase of at least 80% of voting power and value within 12 months.
- The purchaser and all S shareholders, including those not selling, must consent.
- Form 8023 is due by the 15th day of the ninth month after the acquisition month, and the election is irrevocable.
- Form 8883 reports the deemed allocation.
State conformity varies. California, for example, automatically follows a valid federal election, so check each relevant state.
Stock Sale vs. Asset Sale: Compare the Tax and Commercial Outcomes
Seller tax treatment in a stock sale
Gain depends on several inputs:
- Adjusted basis and holding period
- Cash and non-cash consideration
- Assumed liabilities, earnouts and transaction costs
Stock held more than one year generally produces long-term gain. Short-term gain is taxed at ordinary rates of 10% to 37% for 2026.
For 2026, long-term rates use these taxable-income thresholds (not exclusions on sale proceeds):
- 0%: single filers up to $49,450
- 15%: single filers up to $545,500; married filing jointly up to $613,700
Seller tax treatment in an asset sale
The price is allocated among assets under Section 1060 and the residual method, using seven classes from cash (Class I) to goodwill (Class VII). Treatment differs by asset:
- Inventory and ordinary-course receivables stay ordinary income.
- Depreciation recapture on equipment is ordinary income.
- Non-compete payments are ordinary income to the seller.
- Real estate may include unrecaptured Section 1250 gain, taxed at up to 25%.
- Goodwill needs its own analysis; it is not automatically taxed at one rate.
Buyer's preference for an asset purchase
Buyers value a stepped-up basis because it creates future deductions. Goodwill and qualifying intangibles are amortised over 15 years under Section 197.
Eligible tangible property acquired after 19 January 2025 can qualify for 100% bonus depreciation, per IRS guidance. That does not extend to goodwill.
Buyers may pay more for that benefit, or ask for an asset or deemed asset structure. Sellers can ask for a price increase to offset extra tax.
Liability and legal differences
In a stock deal, the buyer takes the company's history. In an asset deal, the buyer takes a defined package and generally does not assume the seller's liabilities unless the agreement says so, often in exchange for a lower price.
Sellers are not fully insulated, though. Successor liability, bulk-sale rules, contracts, indemnities, escrow and tax representations can all keep exposure alive.
Build an after-tax comparison
Model each option side by side: stock sale, asset sale and any deemed asset alternative. Include:
- Federal, state and local tax, plus NIIT
- Transaction costs and debt payoff
- Working-capital adjustments, escrow and earnouts
- The buyer's proposed price change for each structure
Key Tax Implications When Selling an S Corporation
Shareholder basis and pass-through income
Pass-through income generally increases stock basis, while distributions and losses reduce it. Sale-year items therefore change your final gain, and Form 7203 tracks stock and debt basis.
Sale-year items are allocated per share, per day by default. If a shareholder's interest terminates completely, the shareholders can agree to close the books under Treas. Reg. 1.1377-1, with affected-shareholder consent.
Built-in gains tax
Section 1374 applies mainly to former C corporations, or companies holding carryover-basis C corporation assets. The recognition period is currently five years from the first S year. It does not apply to every S corporation sale, so confirm exposure before planning an asset or deemed asset sale.
Capital gains, ordinary income and NIIT
The 3.8% Net Investment Income Tax applies to the lesser of net investment income or income above $200,000 (single) or $250,000 (joint). An operating business is not automatically exempt: material participation matters, and Form 8960 has a special adjustment for S corporation dispositions. Publication 925 lists seven participation tests, such as more than 500 hours a year.
State and cross-border tax
States may tax income, franchise, sales, payroll and successor liabilities. A pass-through entity tax election can help, since Notice 2020-75 treats qualifying entity-level state taxes as deductible by the S corporation. Whether it helps in a sale year depends on the state.
Australian-resident shareholders face a prior question: a U.S. nonresident alien cannot directly hold S shares. Australian residency is not the same as U.S. nonresident-alien status, so establish the U.S. tax position first. Then consider:
- Treaty provisions and the saving clause, which do not automatically exempt gains from U.S. tax
- Australian CGT treatment of overseas gains
- Foreign income tax offsets, which generally require foreign tax actually paid
- How Australian rules classify the S corporation
Get coordinated U.S. and Australian advice rather than assuming any universal result.
Installment sales and deferred consideration
Seller notes and earnouts can defer gain under Section 453. Limits apply:
- Depreciation recapture and inventory are recognised in the sale year.
- Interest may apply under Section 453A where sales exceed $150,000 and obligations exceed $5 million.
- Related-party sales of depreciable property are generally excluded.
- Buyer default is a real risk.
Preparing for and Reporting the Sale
Valuation and tax modelling before negotiations
Document fair market value, normalised earnings, customer relationships, intellectual property, goodwill and tax basis. Use those figures to model after-tax proceeds under each structure. Valuation reports give management a basis for negotiating the offer.
S corporation and business diligence
Run a pre-sale checklist before buyers do:
- S election filing and validity
- Shareholder eligibility and one-class-of-stock compliance
- Cap table, stock and option records
- Prior returns and basis schedules
- State nexus, sales and payroll tax filings
- Debt, contracts and unresolved liabilities
Buyer diligence typically reviews people, customers, assets, liabilities and financial metrics, so clean records speed closing.
Purchase agreement and allocation terms
The agreement should settle:
- Purchase-price allocation and consistent buyer and seller reporting
- Working capital and assumed debt
- Tax covenants and responsibility for pre-closing taxes
- Indemnities, escrow and earnouts
- Non-compete payments
Tax return and form reporting
Forms depend on the deal:
| Transaction | Typical reporting |
|---|---|
| Stock sale | Form 8949 and Schedule D for shareholders; Form 8960 if NIIT applies |
| Asset sale | Form 1120-S, Schedule K-1, Form 8594 |
| Section 338(h)(10) | Forms 8023 and 8883 |
| Installment sale | Form 6252 |
For the 2025 calendar year, Form 1120-S was due 16 March 2026. Confirm the deadline for your filing year in the current Form 1120-S instructions.
Tax Planning and Professional Support
Plan before signing a letter of intent
Evaluate restructuring, gifts, trusts, residency changes, charitable planning and S-election changes well before negotiations. Last-minute moves create valuation, eligibility and documentation problems.
- Gifts generally carry over the donor's basis.
- A charitable remainder trust offers deferral, not elimination, and cannot directly hold S stock.
- Section 1202 QSBS requires stock originally issued by a C corporation, so original S shares do not qualify.
Coordinate the advisory team
Bring in a transaction-focused tax professional, an M&A attorney, a valuation specialist and, for Australian-resident shareholders, an Australian tax adviser. Have them review the tax model, elections, liability allocation and reporting together.
Relevant VJM Global support
VJM Global supports Australian and international businesses with accounting, tax compliance, financial reporting and cross-border advisory. The team can assist with due diligence, structuring, modelling and reporting in international M&A.
The firm holds ISO 27001 certification for information security and delivers entity formation, tax, payroll and compliance services in Australia and the USA.
Legal opinions and regulated tax advice on a specific transaction should come from appropriately qualified advisers.
Frequently Asked Questions
Can I sell my S corporation?
Generally yes. Shareholders can sell stock or the corporation can sell assets. Available structures, buyer requirements, liabilities and tax treatment depend on your company and deal facts.
What are the tax consequences of selling an S corporation?
Gain passes through to shareholders, measured against stock basis, and splits into capital and ordinary income. Asset allocation, built-in gains tax, NIIT and state taxes may apply. Australian-resident shareholders may face additional Australian tax.
How do I report the sale of S corp stock on my tax return?
Shareholders generally report the sale on Form 8949 and Schedule D using the amount realised and adjusted stock basis. Sale-year pass-through items on Schedule K-1 are reported too. Verify forms for your filing year.
How are stock redemptions taxed?
A redemption qualifying under Section 302 is treated as a sale or exchange. Otherwise it is a distribution, taxed using stock basis, AAA and any accumulated earnings and profits. Section 318 attribution can defeat an apparent exit.
How can I avoid capital gains tax on selling a company?
No legitimate strategy guarantees elimination. Basis planning, timing, instalment treatment, charitable or estate planning and elections can reduce or defer tax, but evaluate them early with current professional advice.
