F-Reorganization Under Section 368(a)(1)(F): The Pre-Closing Restructuring PE Buyers Use to Buy S Corporations

If you run a profitable S corporation and a private equity firm slides into your inbox with a term sheet, somewhere on page three you'll see a phrase that almost certainly didn't appear in your law school or business school education: "The parties shall effect a pre-closing F-reorganization."

Don't panic. That sentence is doing a tremendous amount of quiet work. It is, in many middle-market deals, the difference between handing the buyer the company you spent fifteen years building and instead handing them a tax-elegant wrapper around it — one that lets them get a step-up in basis, lets you roll a slice of equity into NewCo tax-free, and lets your operating entity keep the same EIN, the same bank accounts, and the same vendor contracts the morning after closing.

This is the story of the F-reorganization: a tiny, dense paragraph of the Internal Revenue Code that quietly became the dominant pre-closing structure for private equity acquisitions of S corporations.

The Statute: Seventeen Words That Built an Industry

Section 368(a)(1)(F) defines an F-reorganization as:

"a mere change in identity, form, or place of organization of one corporation, however effected."

That's it. That's the entire statutory definition. There is no continuity-of-interest test. No continuity-of-business-enterprise test. No control threshold. No boot rules. For transactions occurring on or after February 25, 2005, the Treasury Regulations explicitly removed even those judicially imposed hurdles for F (and E) reorganizations.

What makes the F-reorg powerful is what the statute doesn't require. The fact that you can stack a fully taxable sale on top of it — and still call the upstairs reshuffling tax-free — is the whole game.

The Six Requirements (Treas. Reg. § 1.368-2(m))

In 2015, Treasury finalized the regulations that actually put meat on the bones. To qualify as an F-reorganization, the transaction must satisfy six conditions:

1. Resulting Corporation stock distributed in exchange for Transferor Corporation stock. All the stock of NewCo (the "Resulting Corporation") must be issued in exchange for stock of OldCo (the "Transferor Corporation").
2. Identity of stock ownership. The same people who owned OldCo must own NewCo immediately after, in the same proportions. No new shareholders sneaking in, no old shareholders sneaking out.
3. No prior assets or attributes of Resulting Corporation. NewCo must be a brand-new shell on the day the deal kicks off. It cannot have meaningful pre-existing assets, liabilities, or tax attributes.
4. Liquidation of Transferor Corporation. OldCo must liquidate or be treated as liquidating for federal tax purposes. (In practice, this is accomplished by a QSub election plus a state-law conversion to an LLC.)
5. Single Resulting Corporation. Only one corporation can come out the other side as the "successor" corporation.
6. Single Transferor Corporation. Only one corporation goes in. You can't merge two operating S corps and call it an F.

These six rules look pedantic, but each one closes a loophole the IRS spent years arguing about in court. Miss one — for example, leaving a stray dollar of operating assets in NewCo — and you blow the F qualification, which can cascade into recognized gain at both the corporate and shareholder levels.

The Standard Six-Step Structure

Almost every modern F-reorg used in M&A follows the same choreography, blessed by Rev. Rul. 2008-18. Walk through it in order — the order matters more than the substance.

Step 1: Form NewCo (a new corporation). OldCo's shareholders incorporate a new entity, often in the same state, with a name like "[OldCo] Holdings, Inc."

Step 2: NewCo files Form 2553 to elect S corporation status. This is a protective election. If NewCo doesn't elect S on day one, the contribution in Step 3 can terminate the chain of S status entirely.

Step 3: Shareholders contribute 100% of OldCo stock to NewCo. Each shareholder receives NewCo stock in proportion to what they gave up. Now NewCo owns OldCo, and the people own NewCo.

Step 4: NewCo files Form 8869 to elect QSub treatment for OldCo. This is the crucial step. A Qualified Subchapter S Subsidiary (QSub) election causes OldCo to be disregarded for federal income tax purposes — it deemed-liquidates into NewCo. The federal tax view: NewCo now directly owns all of OldCo's assets and liabilities.

Step 5: OldCo converts to an LLC under state law. The state-law conversion turns the OldCo corporate shell into a single-member LLC owned by NewCo. Because single-member LLCs are disregarded by default, OldCo continues to be disregarded for federal tax purposes after the conversion — perfectly aligning state-law form with federal-tax substance.

Step 6: The PE buyer purchases LLC interests of OldCo from NewCo. Because OldCo is a disregarded entity, the sale of its membership interests is treated for federal tax purposes as a sale of all the underlying assets — an asset sale, with full step-up.

The whole sequence often closes within minutes on a single closing day. Conceptually, you converted a stock sale (what buyer and seller agreed to commercially) into an asset sale (what gives the buyer depreciation deductions for the next 15 years).

Why PE Firms Are Obsessed With This

For decades, the standard way to convert an S corp stock sale into an asset sale was a joint Section 338(h)(10) election. That tool still exists, but it has a list of pain points that F-reorgs simply don't have:

That last row is quietly devastating. Imagine the buyer's lawyers discover, in week six of due diligence, that the S election Form 2553 was filed nine days late in 2009. Under 338(h)(10), that's a deal-killer — no step-up, billions of pages of QSub remediation, or a renegotiated price. Under an F-reorg, the buyer still gets the asset basis step-up they paid for, because the step-up comes from buying LLC interests in a disregarded entity, not from any S-corp-dependent election.

PE buyers also love rollover equity. They typically want sellers to "roll" 10–30% of their consideration into NewCo equity so the seller stays motivated to hit the earn-out. Under 338(h)(10), that rollover is generally fully taxed at closing. Under an F-reorg, because the rollover happens via a contribution to the buyer's acquisition LLC under Section 721, the seller defers tax on that slice entirely — sometimes for years.

EIN Preservation: The Underappreciated Win

One of the least glamorous but most operationally important benefits is that the operating entity keeps its EIN.

In the F-reorg flow, NewCo gets a new EIN (it's a new corporation), but OldCo — now an LLC and a disregarded entity — keeps its original EIN. That means:

• The W-2s your employees receive next January still show the same EIN.
• Your bank doesn't have to reissue your operating account.
• Your state sales tax accounts, your DOT numbers, your liquor licenses, your hospital contracts, your government supplier numbers — almost all of them are keyed off your EIN and DBA, both of which survive.
• Your QuickBooks file doesn't need to be re-keyed.

Compare that to an asset sale, where the buyer's new entity needs every vendor to reissue every contract, every state to re-license, and every customer to update their AP master file. That migration alone can cost six figures and drag deal closings by quarters.

The Step-Transaction Trap (and Why It's Mostly Defused)

The classic objection to F-reorgs has always been the step-transaction doctrine. The argument goes: if Step 1 (form NewCo) is contractually tied to Step 6 (sell to PE), the whole sequence is really just one big disguised asset sale, and the upstairs reshuffling can't be tax-free.

Treasury heard this argument for forty years and finally said no. Treas. Reg. § 1.368-2(m)(3)(ii) explicitly provides that "a transaction that involves an actual or deemed transfer of property by the Transferor Corporation to the Resulting Corporation is not disqualified … merely because it is part of a larger transaction that effects a more than mere change."

In plain English: you can structure the F-reorg for the express purpose of enabling a subsequent taxable sale, and the F-reorg will still qualify. The IRS has issued multiple revenue rulings (notably Rev. Rul. 96-29 and Rev. Rul. 2008-18) confirming this view.

That said, the step-transaction defense is not infinite. Two patterns still attract IRS scrutiny:

• Stuffing NewCo with new shareholders. If a PE firm becomes a shareholder of NewCo during the reorg (not after), you've violated the identity-of-ownership requirement.
• Skipping steps. If you try to skip the QSub election and go straight from corporation to LLC, you trigger an immediate deemed liquidation of OldCo under Section 336, which can be devastating — recognized gain at the corporate level on appreciated assets, with no step-up benefit to the buyer.

The Single Most Common Way People Break the QSub Election

Look at Step 4 above carefully. The QSub election must be effective while OldCo is still a corporation under state law. If you accidentally complete the state-law LLC conversion in Step 5 before filing Form 8869, OldCo stops being a corporation, and a QSub election can only be made for an entity that is currently a corporation. The election then fails, the F-reorg fails, and you've just done an unintended taxable conversion of your S corp.

Rev. Rul. 2008-18 carefully sequences the QSub election to take effect the day before the state-law conversion. Practitioners frequently file Form 8869 with an effective date set to the morning of closing and queue the state-law conversion paperwork for the afternoon. Do not let your corporate paralegal swap the order to "be tidy." This is the single most common technical failure in F-reorgs and almost always requires a private letter ruling to fix.

What the Financials Look Like the Morning After

Once the dust settles, the new structure for federal tax purposes looks like:

• NewCo (the new S corporation): Owns the disregarded LLC. Files Form 1120S. Holds the rollover equity from sellers.
• OldCo (the disregarded LLC): Holds all the operating assets. Files no federal tax return. Pays no federal tax. Still has its original EIN, its bank accounts, its contracts.
• PE Buyer's Acquisition LLC: Holds the purchased percentage of OldCo's LLC interests. The buyer's share of OldCo's assets has been stepped up to fair-market value, generating fresh depreciation and amortization deductions over the next 5–15 years.
• Sellers: Recognize ordinary gain on the cash they received (calculated as if OldCo had sold all its assets in a taxable transaction — apportioned between Section 1245 recapture, Section 1231 gain, and ordinary income). Defer tax on the rollover slice.

For purposes of state tax, things get messier. A handful of states (notably California, New York, and Texas) don't always conform to the federal F-reorg treatment, and may impose corporate-level franchise tax, real estate transfer tax, or other surprises. Always model the state-by-state tax footprint before signing.

Where Bookkeeping Quietly Saves the Deal

Behind every successful F-reorg sits a clean general ledger. The buyer's quality-of-earnings (QoE) review will reconcile every line of your trial balance to your tax return, your tax return to your bank statements, and your bank statements to your customer contracts. If any of those don't tie out cleanly, the price chip can be substantial.

Three bookkeeping disciplines pay off especially well when an F-reorg is on the horizon:

• Clean intercompany ledgers. If you've been running multiple LLCs or DBAs, get the intercompany positions reconciled and either eliminated or memorialized in writing well before due diligence.
• A separate fixed-asset register tied to the GL. The step-up math depends on the buyer knowing exactly which assets you own, when you placed them in service, and your current tax basis. A fixed-asset register that doesn't tie to the GL is one of the most common diligence findings.
• Cash-basis-to-accrual reconciliations preserved. Many private S corps file taxes on the cash basis. The buyer's QoE will rebuild accrual-basis earnings and will challenge anything that looks like timing manipulation. Save your worksheets.

The earlier you can produce a tidy set of books, the less time you spend in late-stage diligence answering questions about transactions from three years ago.

A Quick Reality Check on Costs and Timing

A typical F-reorg adds roughly $20,000–$60,000 in legal, tax, and state filing fees on top of a regular M&A transaction. It usually requires four to six weeks of pre-closing structuring (drafting articles of conversion, filing protective S elections, sequencing Form 8869 carefully, dealing with state DMVs and licensing agencies). For a deal under about $5 million of enterprise value, the costs can outweigh the tax benefits, and a vanilla stock sale or 338(h)(10) may be more efficient. For deals in the $10 million–$500 million zone — the heart of middle-market PE activity — F-reorgs are almost always the right answer.

Keep Your Books Deal-Ready From Day One

The unsexy truth of every F-reorganization is that the structure only works if the ledger underneath it is clean. A QSub election fixes a tax characterization; it doesn't fix a chart of accounts with mystery suspense balances or a fixed-asset schedule that hasn't been reconciled since 2019.

Beancount.io offers plain-text, version-controlled accounting that gives you a permanent, auditable record of every transaction — exactly the kind of transparent financial trail that PE buyers, QoE diligence teams, and your own tax counsel want to see when you're preparing for an exit. Because the books live in plain text and are tracked in git, you can produce historical trial balances, fixed-asset rollforwards, and intercompany reconciliations on demand, and the buyer can verify them without ever leaving their browser. Get started for free and build the kind of deal-ready ledger that turns an F-reorg from a stressful scramble into a routine afternoon.