A founder I worked with last year called me from the closing dinner. The wire had hit, the bottle was open, and the PE buyer’s general counsel had just made a toast about partnership and the road ahead. He wanted to thank me, and he wanted to confirm that the rollover piece — the part of the consideration he had taken in equity of the new entity rather than cash — was, as the buyer’s tax counsel had explained four months earlier, tax-free.
The honest answer was that it was tax-deferred, that the deferral was less clean than he had been told, and that he should expect a meaningful tax bill within the next eighteen months even if no liquidity event followed. He took it well. The PE shop’s GC was already on the third toast.
The rollover piece of a PE close is one of the most consistently mis-sold corners of a sale process. Founders hear “rollover” and assume that the cash portion of the consideration is taxable now, the rollover portion is taxable later when the new equity is sold, and the math is simple. The math is not simple. The structure most PE shops use — an F-reorganization, sometimes layered with a 338(h)(10) election on a subsidiary — has three places the tax bill shows up that founders rarely see coming.
The F-reorg is a real tax structure, not a marketing phrase
An F-reorganization under Section 368(a)(1)(F) of the Internal Revenue Code is a mere change in identity, form, or place of organization of a single corporation. PE shops favor it for a specific reason. If the target company is an S-corporation — which a meaningful share of founder-owned middle-market businesses are — the F-reorg lets the buyer convert the target into an LLC taxed as a partnership without recognizing gain on the conversion itself. The S-corp stock that the founder owned becomes interests in a new holding company, the original entity becomes a disregarded LLC, and the buyer gets the asset-basis step-up it wants without forcing the founder to take a full cash deal.
The IRS guidance that anchors most of these structures is Revenue Ruling 2008-18, which walks through the F-reorg mechanics for S-corporations and confirms that the Q-sub election and the eventual conversion play together cleanly. The 2008-13 IRB containing the ruling is the IRS authority deal-tax lawyers cite. It is also a document most founders have never seen and would not enjoy reading if they did.
The upshot, in plain terms, is that the F-reorg lets the buyer get a partnership-tax structure on the operating business while letting the founder defer gain on the portion of the consideration that becomes rollover equity. That deferral is the founder benefit. The price the founder pays for the deferral is that the deferred gain shows up in three places they rarely budget for.
The first place the bill shows up: boot on the closing wire
The cleanest place the bill shows up is the cash portion. Any consideration the founder receives that is not the rollover equity itself is “boot” — taxable in the year of the closing, at long-term capital gain rates for the founder’s stock basis above zero. This is the part most founders understand, because it is the part their accountant talks about three weeks before closing.
The complication founders miss is that the boot calculation runs against the original tax basis of the S-corp stock, not against the purchase price. A founder who started a business with $100 of capital and is selling for $30 million in mixed cash and rollover will recognize gain on the full cash amount even if the cash is less than 80% of the consideration. There is no de minimis carve-out and no automatic basis recovery against the cash portion. The cash is taxable to the extent it exceeds the basis, full stop, and the basis is almost always trivial.
The drafting move at the LOI that helps here is a clear ratio specification between cash and rollover. A founder negotiating a 70/30 cash/rollover deal should pin down that ratio before the purchase agreement starts moving, because the buyer’s natural drift in late drafting is to push a higher cash percentage and a lower rollover for diligence or financing reasons. Each point of cash that displaces rollover is a point of taxable boot the founder did not budget for.
The second place the bill shows up: phantom K-1 income on the rollover equity
This is the one founders almost never see coming. The rollover equity is typically not stock in a C-corporation. It is, in the structure most PE shops use, units in a holding LLC that is taxed as a partnership. The founder is now a partner in a flow-through entity. The entity will generate operating income, the operating income will flow through to the partners, and the founder’s share of that operating income will appear on a K-1 the founder receives in March of the year following closing.
The K-1 income is taxable in the year it is allocated to the founder. It is taxable regardless of whether the founder receives any cash distributions from the partnership. PE-owned operating companies are not in the business of distributing meaningful cash to partners — the cash is needed for debt service, capex, and the next bolt-on. The founder who rolled twenty percent of the consideration into the partnership and is now a twenty-percent partner can find themselves with a $400,000 K-1 income allocation and a $40,000 cash tax distribution from the partnership. The difference comes out of their other resources.
The negotiating fix is a tax-distribution provision in the LLC agreement that requires the partnership to distribute, at a minimum, the founder’s federal and state tax liability on the allocated income. Most PE LLC agreements have a tax-distribution clause; the work is making sure the clause uses the highest combined rate, runs on a quarterly basis, includes state tax for the founder’s state of residence, and survives the buyer’s eventual objection that the distribution is constraining liquidity. Many of the same asymmetries that show up in the stockholders agreement show up in the LLC agreement on tax distributions, and the founder who fights for cash on the closing wire and concedes on the LLC agreement is often trading dollars for dimes.
The third place the bill shows up: the next liquidity event
The deferred gain that the F-reorg structure preserves does not disappear. It rides on the rollover equity until the founder sells the rollover equity, takes a distribution that exceeds basis, or experiences a partnership-level event that triggers recognition. The most common trigger is the PE shop’s second sale — when the platform sells to a strategic or to a larger PE shop three to seven years out, the founder’s rollover equity sells with it, and the deferred gain from the original closing comes due alongside the new gain on the appreciated equity.
The math of that second event surprises founders for two reasons. First, the founder is recognizing two layers of gain at the same time — the deferred portion from the original sale plus the appreciation on the rollover equity since. Second, the second sale is often structured the same way as the first, with a portion of the consideration in rollover equity into the new platform. The founder ends up with a tax bill on the deferred gain even on the dollars that did not come home in cash, because the F-reorg deferral does not chain through a second F-reorg without careful structuring.
The drafting move at the LOI on the first deal is to think about the second deal. The founder should require, in the LLC agreement, that any future sale of the platform that gives the founder rollover-style equity in the acquirer will be structured to preserve the original deferral where the tax code permits it. Most PE shops will agree to commercially reasonable cooperation language. The few that will not are signaling something about how they handle their portfolio companies that the founder should hear.
What to negotiate at the LOI
The rollover-equity piece is rarely the headline of the LOI. The cash purchase price, the working capital target, the indemnity cap, the escrow size — those are the headlines. The rollover-equity piece sits in a paragraph two-thirds of the way down the LOI that says, in substance, “approximately twenty percent of the consideration will be in the form of rollover equity in the post-closing platform.”
That paragraph is the founder’s leverage point. The buyer wants the rollover equity for alignment reasons and tax-structuring reasons. The buyer can be pushed, at LOI, on three things that will not be available later. First, on the rollover percentage and how it interacts with the boot calculation — every point of rollover that displaces cash is a point of deferred tax. Second, on the tax-distribution mechanic in the LLC agreement that has not been drafted yet — the founder should specify at LOI that distributions will be quarterly, at the highest combined federal and state rate, and not subject to the buyer’s discretion. Third, on the cooperation language for the next liquidity event — the founder should specify that the buyer will use commercially reasonable efforts to structure any future sale in a way that preserves the founder’s deferral where the code permits.
Each of those three terms is, by deal-process standards, a small ask at the LOI. Each is meaningfully harder to get into the LLC agreement when the document is drafted three months later under time pressure. A founder who reads the rollover paragraph carefully at LOI and pushes back on the three items will, in most middle-market deals, get most of what they want. A founder who waves the rollover paragraph through at LOI and discovers the asymmetries in the LLC agreement two days before closing will not.
The deferral remains the founder’s benefit and the F-reorg remains the structure that produces it. The structure is real and the tax savings are real. The trap is treating the rollover as tax-free instead of tax-deferred, and budgeting the closing distribution against the deal value rather than against the actual cash that lands in the founder’s account after boot, K-1 income, and the eventual second-sale recognition. The founder who builds a three-year cash flow model around the rollover at signing tends to come out where they expected to. The founder who does not, finds the bill in the mailbox in March.
For founders working through a sale with a meaningful rollover component, an M&A counsel pass on the tax architecture at LOI is the place this conversation needs to happen. The deal documents lock in the answers; the LOI is where the answers are still negotiable. The same is true for the supporting documents — the merger-agreement framework that follows the LOI typically cannot fix what the LOI left ambiguous.
If you are a founder reading an LOI with a rollover component and trying to figure out what the wire will actually look like after taxes, feel free to reach out to my firm manager, Magda, at Magda@montague.law, or fill out our contact form. Mention you read this post.
— John
