Installment Sale of S Corp Stock, LLC and Partnership Interests
Yes, you can sell private company stock or an LLC or partnership interest on an installment note, and report the gain as you are paid. The limits: publicly traded stock can never use the installment method (§453(k)(2)), and when you sell a partnership or LLC interest, your share of the partnership's depreciation recapture and other "hot assets" is ordinary income taxed in the year of sale. The rest of the gain rides the note.
This page is for owners selling an ownership interest rather than the assets themselves. For a sale of business assets, see seller financing a business sale. For asset vs stock sales and how each piece of a business is taxed, see selling a business: tax implications.
Go deeper: selling a business on an installment note, on Big Sale Tax.
Private stock yes, publicly traded stock no
The installment method applies to a sale where at least one payment comes after the year of sale (§453(a), (b)(1)). But §453(k)(2) switches it off for any obligation "arising out of a sale of ... stock or securities which are traded on an established securities market." For those, "all payments to be received shall be treated as received in the year of disposition." IRS Pub. 537 says the same: you "can't use the installment method to report gain from the sale of stock or securities traded on an established securities market."
| What you sell | Installment method? | Main trap |
|---|---|---|
| Publicly traded stock | No (§453(k)(2)) | All gain in the year of sale |
| Private C corporation stock | Yes | §1202 may exclude the gain; §453A charge over $5M |
| Private S corporation stock | Yes | Buyer may want a deemed asset sale election |
| Partnership or LLC interest (taxed as a partnership) | Partly | §751 hot assets and recapture taxed now; your share of debt counts as price |
| Business assets directly | Yes, except inventory | Recapture on equipment in year one; written allocation binds you |
Dealers and inventory are out too (§453(b)(2)). A note you receive that is payable on demand or readily tradable counts as a payment (§453(f)(4)).
S corp and C corp stock: how the note works
A sale of private stock for a note is a plain installment sale of a capital asset:
- Gross profit ratio = your gain divided by the contract price. Each principal dollar carries that share of gain.
- Interest on the note is ordinary income each year. The note needs adequate stated interest, at least the applicable federal rate for its term, or part of the principal is recharacterized as interest (§§483, 1274). See seller financing interest rate and the AFR.
- Large notes. If the notes from the year's sales (each over $150,000) that are still outstanding at year end total more than $5 million, §453A adds an interest charge on the deferred tax for the part above $5 million, and borrowing against the note is treated as a payment. See the §453A interest charge and pledge rule.
S corporation stock. A sale of the shares is a sale of stock. Buyers of S corporations often ask for an election that treats the deal as a sale of the company's assets (for example under §338(h)(10) or §336(e)). That changes the tax picture, including how much ordinary recapture lands in year one. If a buyer asks for one, have your CPA model both versions before you agree.
C corporation stock and §1202. Qualified small business stock can exclude much or all of the gain under §1202: up to $15 million per company for stock acquired after July 4, 2025 ($10 million before), or 10 times your basis if larger. §1202 applies only to "stock in a C corporation" (§1202(c)(1)), so S corporation stock and partnership interests do not qualify. If the gain is excluded, spreading it on a note buys nothing. How the exclusion and its per-company cap apply when the gain is recognized over several installment years is a question for your CPA before you sign.
Partnership and LLC interests: the hot-asset slice
A sale of a partnership interest (including an LLC taxed as a partnership) is generally treated as the sale of one capital asset, with a carve-out. Under §751(a), money received for your share of the partnership's "unrealized receivables" and "inventory items" is treated as received for property other than a capital asset. That slice is ordinary income.
Two rules then pull that slice into year one:
- Recapture. §453(i)(2) defines recapture income to include "so much of section 751 as relates to section 1245 or 1250." Recapture income is recognized in the year of sale, whatever the payment schedule (§453(i)(1)).
- Receivables and inventory. IRS Pub. 537: "The gain allocated to the unrealized receivables and the inventory can't be reported under the installment method. The gain allocated to the other assets can be reported under the installment method." Pub. 537 also notes that unrealized receivables include depreciation recapture income. This is the IRS position often traced to Rev. Rul. 89-108.
And one more item raises the price: your share of partnership debt. When you sell, relief from your share of the partnership's liabilities is treated like debt relief on any other sale (§752(d)), so it is part of your amount realized. Ask your CPA how that debt relief is treated for payments and contract price on your facts.
Get the partnership's §751 statement first. You cannot model the deal without knowing how much of the price is hot assets. A real estate LLC that did a cost segregation study can have a large §1245 slice.
Earn-outs and contingent payment sales
Many business and stock sales include an earn-out: part of the price depends on future results. That is a contingent payment sale, and it can still use the installment method (Temp. Reg. §15a.453-1(c)). How your basis is recovered depends on the terms:
| Deal terms | How basis is recovered |
|---|---|
| A stated maximum price | Treated as if the maximum will be paid; ratio set on that price |
| No maximum price, but a fixed payment period | Basis spread in equal parts over the years of the period |
| Neither a maximum nor a fixed period | Basis spread in equal parts over 15 years, and the arrangement will be "closely scrutinized" |
The practical advice: set a maximum price or a fixed term. With neither, basis recovery is slow and the IRS may question whether the deal was a sale or something like a royalty.
Worked example: selling an LLC interest on a note
Simple example. You sell your 40% interest in an LLC that owns a cost-segregated commercial building. The facts, in round numbers, with no partnership debt, no selling costs and adequate stated interest:
- Price: $2,000,000. $200,000 at closing, and a $1,800,000 note paid in nine equal principal payments of $200,000.
- Your outside basis in the interest: $600,000. Total gain: $1,400,000.
- The partnership's §751 statement shows $300,000 of your gain is from §1245 recapture.
The $300,000 of hot-asset gain is ordinary and taxed in year one. It is added to your basis for the installment computation, so the remaining gain is $1,100,000. The gross profit ratio is $1,100,000 / $2,000,000 = 55%.
| Year | Principal received | Ordinary (§751) | Installment gain (55%) | Total gain reported |
|---|---|---|---|---|
| 1 | $200,000 | $300,000 | $110,000 | $410,000 |
| 2 to 10 (each) | $200,000 | $0 | $110,000 | $110,000 |
| Total | $2,000,000 | $300,000 | $1,100,000 | $1,400,000 |
In year one you report $410,000 of gain on $200,000 of cash, and $300,000 of it is ordinary income. Size the down payment so it covers the year-one tax.
Whether the installment gain is passive depends on your role in the partnership in the year of sale; a silent investor's gain is generally passive, measured by looking through to the partnership's activities (Temp. Reg. §1.469-2T(e)(3)). That can matter a great deal if you have stuck passive losses.
Run your own version in the calculator.
Who owes you: buyer note or structured sale
Most stock and interest sales use seller financing: the buyer signs a note to you, often secured by the shares or the interest sold. A structured installment sale is another option: the buyer pays in full at closing and the obligation to pay you over time is assigned to an assignment company, usually funded by a fixed annuity it owns (some programs use a funding agreement). There is no buyer credit risk. What to know: the schedule is fixed (no acceleration, pledge or sale), which is what protects the deferral; the payments depend on the assignment company's ability to pay; a commission is built into the pricing; and there is no published IRS ruling on this specific structure, so have your CPA review it. The installment rules on this page, including the hot-asset carve-out and §453(k)(2), apply either way.
Bottom line
Private stock and partnership interests can be sold on installments; public stock cannot. On a partnership or LLC interest, the recapture and other hot assets inside the partnership are taxed in year one, and your share of partnership debt counts in the price. Get the §751 statement, check §1202 before spreading C corporation gain, and put a maximum price or fixed term on any earn-out. For the basics, see the installment sale guide and installment sale depreciation recapture.
Questions to ask your CPA
- What does the partnership's §751 statement show for my share of recapture, receivables and inventory?
- How does my share of partnership debt affect my amount realized, contract price and year-one payments?
- Is my stock qualified small business stock, and if so, how does §1202 apply across the installment years?
- If the buyer wants a §338(h)(10) or §336(e) election, what does that do to my tax and my year-one bill?
- Is my installment gain passive or nonpassive, and can it meet my suspended losses?
- Will my notes top $5 million at year end, bringing in the §453A interest charge?
Run your own numbers. Compare a cash sale, seller financing and a structured installment sale side by side, free.
Educational only, not tax, legal or investment advice. Examples are illustrative. Have your CPA or tax attorney review your facts before you act. Hans Goldstein is an Enrolled Agent, admitted to practice before the Internal Revenue Service, and a licensed insurance agent (CA Insurance License #4273294). He is not a CPA or attorney. He is paid a commission only if a structured installment sale is funded; seller financing pays him nothing. Disclosures.