Asset Sale vs Stock Sale: Who Pays the Tax, and How Much?
Asset sales give the buyer a $1M–$3M NPV tax shield on a $10M deal but cost the seller 5–12% of gross proceeds in extra federal tax — often more with depreciation recapture. Stock sales invert the math. The 338(h)(10) election lets an S-corp seller give the buyer asset-sale treatment while paying stock-sale-like tax. Structure is where deals are won and lost.
Updated 2026-07-0213 min readWritten by Ad Astra Equity M&A advisors
Option A
Asset Sale
Buyer purchases the assets and assumes only specified liabilities. The legal entity stays with the seller. The buyer resets tax basis in every acquired asset.
- Buyer amortizes goodwill over 15 yrs
- Ordinary income recapture hits seller
- Contracts + licenses re-consented
Option B
Stock Sale
Buyer purchases the equity of the entity. Every asset, contract, license, and historic liability comes with it — carryover basis, carryover risk.
- Seller: LTCG on nearly 100%
- Buyer: no basis step-up
- Contracts + permits stay in entity
Quick answer
When to pick each
Pick Asset Sale if…
- Buyer's leverage is strong and they refuse to close without a basis step-up
- You're an LLC or partnership already — asset-sale treatment is the default and there's no S-corp premium to give up
- Your business has minimal depreciation recapture exposure (light on equipment, heavy on goodwill and workforce)
- You can negotiate a gross-up payment or 338(h)(10) election to neutralize the seller's tax penalty
Pick Stock Sale if…
- You're a C-corp seller and asset-sale double taxation would strip 15–25% of proceeds
- Your business runs on non-assignable contracts, government permits, or franchise agreements that can't be easily re-consented
- You have significant depreciation recapture (Section 1245/1250) that would convert LTCG to ordinary income
- You have historic tax attributes (NOLs, credits) the buyer values and wants to preserve inside the entity
Baseline definitions
What each one actually is
The textbook definitions get repeated everywhere. Here's what each means in the middle-market deal room — with the numbers that matter.
Asset Sale
An asset sale is a transaction where the buyer purchases specified assets — equipment, inventory, receivables, IP, customer relationships, goodwill — and expressly assumes specified liabilities. Everything not sold or assumed stays with the legal entity, which remains with the seller (usually to be wound down after close).
The buyer's economic prize is the basis step-up: under IRC §1060, the purchase price is allocated across seven asset classes, and the buyer takes fair-market-value basis in each. Class VII (goodwill and going-concern value) is amortized straight-line over 15 years under §197 — a tax shield worth roughly 21% × goodwill × PV factor, or 12–18% of the goodwill component in NPV terms. On a $10M deal with $7M of goodwill, that shield is worth roughly $1.0M–$1.3M in present value to the buyer.
Stock Sale
A stock sale is a transaction where the buyer purchases the equity of the entity itself. The entity — with every asset, contract, license, permit, employee, and historic liability inside it — becomes the buyer's. There is no re-titling of assets, no re-consenting of contracts (in most cases), and no basis step-up. The buyer's basis in the acquired stock equals what they paid; asset basis inside the entity stays at historic (carryover) levels.
For the seller, a stock sale is almost always the more tax-efficient outcome: nearly 100% of the gain is long-term capital gain (assuming holding period is met), taxed at 20% federal + 3.8% NIIT + state — call it 24–33% blended. Compare that to an asset sale where depreciation recapture, ordinary-income-taxed inventory, and (for C-corps) entity-level tax can push the effective seller rate to 35–50%. The trade-off: the buyer inherits every skeleton in the entity's closet — historic tax exposure, product-liability tail, employment claims, environmental issues. Reps, warranties, indemnities, and R&W insurance exist because of this.
Attribute matrix
Head-to-head on the twelve attributes that actually move a deal
No hedging. Each row has a verdict — with a one-line note explaining why it isn't the whole story.
| Attribute | Asset Sale | Stock Sale | Verdict |
|---|---|---|---|
| Seller federal tax treatment | Mixed: LTCG + ordinary recapture | ≈100% LTCG | Stock Sale Asset sale blended seller rate typically 28–38%; stock sale typically 24–27% federal (incl. NIIT). |
| Buyer basis in assets | Stepped up to FMV | Carryover (historic) | Asset Sale §1060 allocation drives buyer's 15-yr §197 amortization on goodwill — worth 12–18% of goodwill in NPV. |
| Historic liability inheritance | Only assumed liabilities | Full — every liability comes with entity | Asset Sale Asset sale isolates buyer from pre-close tax, environmental, product-liability, and employment exposure. |
| Contract / customer assignment | Consents required (most) | Rides with the entity | Stock Sale Asset sale can require 50–200+ third-party consents in contract-heavy businesses; stock sale skips this entirely. |
| Licenses & permits | Re-issued to buyer | Stay in entity | Stock Sale Government licenses (healthcare, cannabis, alcohol, defense, professional) can add 3–9 months to an asset-sale close. |
| Working capital transfer | Explicit — AR/AP itemized | Automatic — inside entity | Stock Sale Asset sales require WC schedules and true-ups on each component; stock deals use a single peg. |
| IP transfer complexity | Assign patents, trademarks, domains individually | Stays with entity | Stock Sale Patent assignments recorded with USPTO; trademark assignments require re-registration in some jurisdictions. |
| Employee & PTO transfer | Rehire event; PTO liability re-negotiated | Continuous employment | Stock Sale Asset-sale rehire triggers COBRA, 401(k) plan issues, and PTO accrual resets — worth $50K–$300K on a 100-FTE business. |
| Deal financing simplicity | Cleaner — no historic liens | Requires deeper diligence on entity | Asset Sale Senior lenders often prefer asset-sale structure — no legacy UCC filings, cleaner collateral package. |
| Closing timeline complexity | Longer — consents, filings, retitling | Shorter — one entity moves | Stock Sale Asset sale in a contract-heavy business adds 4–8 weeks vs. equivalent stock sale. |
| C-corp fit | Poor — double tax exposure | Standard structure | Stock Sale C-corp asset sale = corporate tax on gain + shareholder tax on distribution. Combined federal rate: 39–44%. |
| S-corp / LLC fit + 338(h)(10) | Default asset-sale treatment via 338(h)(10) | Straight stock sale | Depends on you S-corp 338(h)(10): buyer gets basis step-up, seller taxed as if asset sale. LLC: automatic asset-sale tax treatment. |
Trade-offs, quantified
The numbers competitor pages skip
Every trade-off below is anchored to a real number from a middle-market deal. Sourced, not guessed.
The seller tax delta on a $10M deal is real money
Seller federal tax — asset sale
$3.35M
Seller federal tax — stock sale
$2.45M
Assume a $10M sale of an S-corp with $1M of accumulated depreciation on Section 1245 equipment, $1M of inventory at cost basis, and $7M of allocated goodwill. Under an asset sale, the $1M depreciation recapture is taxed as ordinary income (37% federal) = $370K; inventory generates $1M at 37% = zero if sold at cost, up to $370K if marked up; and the $7M goodwill is LTCG at 23.8% = $1.67M. Blended federal + NIIT: ~$3.35M, or 33.5% of proceeds. Under a straight stock sale, essentially all $10M flows as LTCG at 23.8% = ~$2.38M, or 23.8%. That's a ~9.7% delta on gross proceeds. In a C-corp, the delta widens to 12–20% because of entity-level tax on the asset sale.
Buyer's basis step-up is worth 12–18% of goodwill in NPV
Buyer NPV benefit — asset sale ($7M goodwill)
$1.12M
Buyer NPV benefit — stock sale (no step-up)
$0
Under IRC §197, the buyer amortizes purchased goodwill straight-line over 15 years. On $7M of goodwill, that's $467K/yr of deductions. At a 21% corporate rate (or ~29.6% for pass-through with QBI), that's ~$98K/yr in cash tax savings for 15 years. Discounted at 8%, the present value is ~$1.12M — roughly 16% of the goodwill allocation. This is what buyers are fighting for when they push asset structure. It's also why the standard negotiation posture in an S-corp deal is: seller demands a gross-up equal to the tax delta; buyer accepts because their step-up shield is worth more.
338(h)(10) is the compromise that closes deals
Seller effective rate under 338(h)(10)
23.8% – 27%
Buyer basis-step benefit preserved
$1.12M
The §338(h)(10) election — available only when the seller is an S-corp (or a member of a consolidated group) and the buyer is a corporation — treats the stock sale as an asset sale for tax purposes. Buyer gets the basis step-up and §197 amortization. Seller reports gain as if selling assets, but avoids the C-corp double-tax problem because S-corps pass through. Effective seller rate typically lands at 23.8–27% federal + NIIT — a modest premium over pure stock sale (because of ordinary-income allocation to recapture and inventory), but far below the C-corp asset-sale rate. The buyer pays a gross-up ranging from 4–8% of purchase price to offset the seller's incremental tax — and still nets a positive NPV.
Depreciation recapture can vaporize the asset-sale math
Federal rate on §1245 recapture
37%
Federal LTCG rate on stock sale
23.8%
Capital-intensive sellers — trucking, manufacturing, industrial services, equipment rental — often have $2M–$5M of accumulated depreciation on machinery, vehicles, and Section 1245 property. In an asset sale, that entire depreciation figure recaptures at 37% ordinary income (federal). On a $10M deal with $3M of §1245 recapture, that's $1.11M in ordinary tax vs. $714K if the same gain were LTCG — a $396K penalty on that slice alone. Add Section 1250 partial recapture on real property at 25%. This is why capital-intensive sellers should almost never accept an asset structure without a substantial gross-up, and often insist on stock structure with a walk-away threat.
Decision framework
If this is you, pick this — with the reason
If…
You're a C-corp seller
Pick
Stock Sale
C-corp asset sale creates double taxation — corporate tax on the gain (21% federal) plus shareholder tax on the distribution (23.8% LTCG + NIIT). Combined 39–44% federal effective rate destroys seller economics. Push hard for stock structure.
If…
You're an S-corp with heavy §1245 depreciation recapture (>20% of purchase price)
Pick
Stock Sale
Ordinary-income recapture at 37% federal vs. LTCG at 23.8% is a punitive spread. Stock sale keeps the depreciation frozen inside the entity — the buyer inherits the recapture exposure at a future sale. If buyer demands step-up, insist on 338(h)(10) with a gross-up covering the recapture penalty.
If…
You're an LLC or partnership
Pick
Asset Sale
Asset-sale treatment is the tax default under Subchapter K — there's no premium to give up. The economics are usually neutral; structure the transaction for legal simplicity and buyer preference.
If…
Your business runs on non-assignable contracts, government licenses, or franchise agreements
Pick
Stock Sale
Healthcare licenses, cannabis permits, defense clearances, professional licenses (CPA, RIA, legal), and government contracts often can't be transferred in an asset sale — or take 6–12 months to re-issue. Stock sale keeps them in the entity and closes on schedule.
If…
Your business is contract-heavy with strong customer relationships (100+ active MSAs)
Pick
Stock Sale
Asset sale requires customer consents on each contract. Consent fatigue triggers renegotiations — customers use the change of control to extract pricing concessions or defect. Stock sale avoids all of this. Preserve customer revenue by preserving the entity.
If…
You have valuable historic tax attributes — NOLs, credits, R&D carryforwards
Pick
Stock Sale
NOLs and credits typically die or become §382-limited in an asset sale. Stock sale preserves them (subject to §382 change-of-ownership limitations, but usable). If the buyer values them at $500K+, use them as a negotiating chip.
If…
Your business is asset-light — software, services, consulting — with 80%+ of value in goodwill
Pick
Asset Sale
Minimal recapture, minimal contract complexity, and buyer's §197 amortization shield is at its most valuable. The gross-up to offset seller's tax delta is easy to negotiate because the buyer's NPV benefit outweighs the cost.
If…
Buyer is a PE fund using new-entity financing
Pick
Asset Sale
PE typically forms NewCo to hold the acquired business, and asset-purchase structure gives them clean UCC-1 filings and no legacy liens. If you're an S-corp, negotiate 338(h)(10) — buyer gets what they want (step-up), you get what you want (LTCG-like treatment).
Real deals, anonymized
What the math actually looked like
Four mid-market outcomes from the last 24 months. Names redacted, structures real.
Asset Sale outcome
$11M revenue / $2.1M EBITDA SaaS platform for legal-services workflow, LLC-taxed
Asset sale at 9.5x — $19.95M — with $17M allocated to goodwill and $2M to workforce-in-place under §1060. Buyer's 15-yr §197 amortization = $1.27M/yr in deductions, ~$2.5M NPV shield at their 29.6% pass-through rate. Seller taxed as blended LTCG (~24%) because LLC pass-through eliminated recapture on the software (self-developed, zero basis).
Lesson: Asset-light + zero depreciation = asset sale is clean for both sides. The LLC structure removed the C-corp double-tax problem, and the buyer's step-up was pure upside. No 338 election needed.
Asset Sale outcome
$8M revenue / $1.6M EBITDA regional insurance brokerage, S-corp
Structured as 338(h)(10) election at 10.2x — $16.3M — with buyer paying a $610K gross-up (3.7% of purchase price) to offset seller's incremental ordinary-income allocation to workforce and customer relationships. Buyer's §197 shield: ~$1.4M NPV. Net-net: buyer paid $610K extra, saved $1.4M NPV = $790K positive to buyer; seller landed at ~24.5% effective rate vs. 23.8% pure stock.
Lesson: 338(h)(10) is the small-premium compromise both sides can live with. The seller gave up ~0.7% of effective rate; the buyer paid ~3.7% of purchase price for a shield worth ~8.6% of purchase price.
Stock Sale outcome
$18M revenue / $2.7M EBITDA regional trucking company, S-corp, $4.2M accumulated depreciation on fleet
Buyer initially demanded asset structure. Seller ran the recapture math: $4.2M of §1245 recapture at 37% = $1.55M ordinary tax vs. $1.0M LTCG on the same gain — a $554K penalty. Seller walked from the asset-sale LOI, ran a stock-sale process, and closed with a different PE buyer at 7.1x — $19.2M — as a straight stock sale. Buyer inherited the depreciated fleet basis and the future recapture exposure.
Lesson: Heavy §1245 recapture is a walk-away point. When ordinary-income recapture would strip $500K+ from a seller's proceeds, the answer is not 'negotiate the gross-up' — the answer is 'change the structure or change the buyer.'
Stock Sale outcome
$26M revenue / $4.8M EBITDA managed IT services with 340 customer MSAs, C-corp legacy structure
Sold at 8.3x — $39.8M — as a straight stock sale to a strategic. C-corp status made asset structure a non-starter (double-tax delta would have exceeded $6M). Additionally, 340 customer contracts each contained a change-of-control clause — but only 42 required consent for a stock sale vs. all 340 for an asset sale. Stock structure saved ~$780K in legal fees and 4 months of timeline.
Lesson: C-corp + contract-heavy = stock sale is the only sane path. Buyer priced the lost step-up into the multiple (paid 8.3x vs. their 9.0x asset-sale ceiling), but the seller kept ~$5.5M more in after-tax proceeds and closed 4 months faster.
Traps to sidestep
Six mistakes we see on every process
Agreeing to asset structure without modeling depreciation recapture
Sellers hear 'asset sale' and think 'longer close, more paperwork.' What they miss is the §1245/§1250 recapture math — a $3M accumulated depreciation figure means $1.1M of ordinary tax at 37% vs. $714K of LTCG at 23.8%. Model it before signing the LOI, not after.
Assuming the 338(h)(10) election is automatic
It's not. It requires the seller to be an S-corp (or member of a consolidated group), the buyer to be a corporation (not an individual, not a partnership without a corporate blocker), and both to make the election jointly on Form 8023 within 8.5 months of close. LLC sellers can't make the election. Partnership buyers can — but need a corporate acquisition vehicle.
Ignoring the §1060 allocation as a seller
The buyer's Form 8594 allocation drives your tax. Buyer wants maximum allocation to short-lived assets (equipment — fast depreciation) and workforce/customer relationships (ordinary income to you). You want maximum allocation to goodwill (LTCG to you). This is negotiated — most sellers don't realize until after signing.
Skipping the C-corp double-tax analysis
A C-corp seller entering an asset sale walks into a 39–44% combined federal rate. On a $10M deal, that's a $1.5–$2M penalty vs. a stock sale. Either restructure to S-corp 5+ years pre-sale (BIG tax rules apply for 5 years) or insist on stock structure. Never accept a C-corp asset sale without either.
Underestimating contract consent cost in an asset sale
Contract-heavy businesses (SaaS with 200+ customer MSAs, managed services with recurring contracts, distribution with supplier agreements) need each contract re-consented. Legal fees run $500–$1,500 per contract. Customer defection rate during consent process averages 3–8%. Model the leakage.
Forgetting about state tax on the allocation
California, New York, and other high-tax states treat some asset-sale gain as ordinary income (or apply franchise tax) even when federal treatment is LTCG. Add 5–13% state tax to the seller's asset-sale bill. A California S-corp seller in an asset sale can face a 40%+ combined federal + state effective rate — vs. ~34% on stock.
Frequently asked
Questions we actually get asked
On a typical $10M middle-market S-corp deal with moderate depreciation and inventory, the seller's federal + NIIT tax bill is roughly 5–12% higher under asset structure. Specifically: ~23.8% effective rate on pure stock sale vs. ~28–35% on asset sale, depending on how much of the price allocates to depreciation recapture (37% ordinary) and workforce/customer relationships (37% ordinary) vs. goodwill (23.8% LTCG). For C-corp sellers the delta widens to 15–20%.
After 200+ processes, here's what we tell founders
Deal structure is where middle-market M&A is won and lost, and it's the topic sellers spend the least time on before signing an LOI. In the deals we've run across specialty services, industrials, tech-enabled businesses, and professional services, the structure decision is worth 5–15% of after-tax proceeds — larger than almost any other single variable including the multiple itself.
The default posture we take on the sell side: if the seller is a C-corp, we push hard for stock structure and price the buyer's lost step-up into a lower multiple concession. If the seller is an S-corp, we run the §338(h)(10) math on day one and use it as a negotiation lever — the buyer's NPV shield is almost always larger than the seller's tax gross-up, which creates room for both sides to win. If the seller is an LLC or partnership, we structure for legal simplicity because the tax outcome is largely fixed regardless of form.
The wrong mistake is not choosing the wrong structure. The wrong mistake is treating structure as a legal formality rather than the primary tax negotiation. Every seller we work with sees a full asset-sale-vs-stock-sale tax model — with depreciation recapture, allocation scenarios, and gross-up options priced in — before signing any LOI.
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