Carve-outs are the defining 2026 deal, and separation is where the value leaks

Operators and investors,

Carve-outs are on track to be the biggest deal theme of 2026: nearly 80% of respondents to the AURELIUS Carve-Out Survey expect more corporates to divest non-core units this year, and KPMG puts 71% of private equity firms and 57% of corporates as open to or actively pursuing portfolio rationalization (KPMG, via Private Equity Wire).

On the buyer side, 55% of PE dealmakers are eyeing carved-out assets as a way to acquire good businesses trapped inside large corporate structures, at prices the auction market for whole companies will not offer.

Around a third of these deals still fail to create the value the buyer underwrote, and McKinsey's M&A research ties close to 40% of that underperformance to poor planning for the transition period. The value leaks in the separation, the work of standing the business up on its own after close, and the deal model rarely prices it.

Why a carve-out arrives dependent on the parent's systems

A carve-out integrates within the ecosystem of the parent company. The unit still runs on the parent's ERP, email, payroll, data warehouse, and security stack, and none of it transfers with the deal.

The bridge is a transition services agreement, or TSA: the parent keeps providing IT, HR, finance, and payroll for a fixed window, usually 6 to 18 months, while the new owner stands up its own. That window is the deadline the whole value-creation plan runs against.

Most models carry a clean EBITDA number and a synergy case, with nothing on what it costs to replace 8 or 10 shared systems before the parent switches them off, how long that takes, or who owns it.

This issue covers 4 topics:

• Why the TSA deadline is shorter than the rebuild it requires

• What has to be rebuilt after close, and in what order

• Why standalone costs come in above the parent's allocation

• How to run the separation as the value-creation plan

It is also written for sponsors and operators underwriting a carve-out in 2026, drawing on the carve-out and post-close build work we run for PE-backed companies.

Demand for carve-outs is at a high and the failure rate has not moved. The separation decides the outcome, and it is the line the deal model spends the least time on.

1. Why the TSA deadline is shorter than the rebuild it requires

Every service the parent provides has its own end date, and the functions do not all come back at once. TSAs run 3 to 12 months. IT and infrastructure sits at the outer edge at about 12 months, ERP and accounting near 10, HR and payroll near 9. A single headline TSA is really several overlapping clocks. TSA fees run 1 to 3% of deal value, technology more than half of that, at a rate the parent sets.

Service quality drifts once the deal closes and extensions get negotiated from weakness, because the seller's team has moved on. A buyer who mapped the exit from every service before signing negotiates extensions from information.

2. What has to be rebuilt after close, and in what order

Some workstreams take a year and some take a quarter. Sequence decides which finish inside the TSA and which get bought back at the parent's rate in month 10.

Finance runs the longest. A carved-out unit often shows up without a general ledger, close process, or FP&A function, and building one (ERP selection, chart of accounts, first clean close) runs 9 to 12 months on a typical mid-market carve-out. Until that lands, every board update is running on the parent's numbers.

The CRM, pipeline, and customer records sit inside the parent's instance, so the carve-out receives a data export with no operating system behind it. Sales leaders spend two quarters reconstructing pipeline hygiene, and forecast accuracy in the first four quarters is where sponsors write down their year-one growth case.

New payroll provider, new benefits vendors, new HRIS, new employment contracts in every jurisdiction. Miss one cutover and 4,000 people miss a paycheck.

A thin control environment is an operating risk during the hold and a discount at sale, and the baseline controls a buyer's advisor flags (SSO, endpoint management, backup and recovery, incident response) are the ones a carved-out unit builds from scratch.

Getting the sequence wrong is where the extensions come from: a buyer who starts the ERP build in month 4 because diligence ran late has already lost the finance race, and every extension after that is bought at the parent's price.

3. Why standalone costs come in above the parent's allocation

Carve-out synergy cases are built on what the unit spent inside the parent, and that figure is an internal cost allocation. Every function costs more once it stands on its own. 30 to 60% more is common on IT and finance once you add real headcount, direct vendor contracts, license discounts that die on separation, and the audit, legal, and insurance lines the parent absorbed centrally.

Separation costs on top of that run 1 to 5% of the divested business's revenue, and BCG has put them as high as 13% in large or complex deals. One-time cost on top of a permanently higher run rate, and the synergy case has to earn both back before the plan shows net value.

The security stack is the most underpriced line, because the baseline controls a buyer's advisor checks are the ones the carve-out has to build from scratch.

Underwrite the standalone cost base and the separation program before signing, and hold any synergy that depends on the separation finishing on schedule as conditional until the switch-off actually lands.

4. How to run the separation as the value-creation plan

The carve-outs that create value treat day one as the start of a build. The separation program and the value-creation plan run as one workstream, under one owner, with one budget and one calendar.

That starts with a separation owner named before close, with real authority over IT, finance, commercial, and HR. The model has to carry the standalone cost base at market rate, not the parent's internal allocation dressed up as a baseline. And every TSA line needs a switch-off date the buyer has planned against, sequenced so nothing is paid for twice and nothing switches off before its replacement is live.

Run this way, the build-a-carve-out forces on the buyer is the value-creation plan. A buyer who underwrites only the business and treats separation as paperwork ends up in the third of deals that give value back to the seller through TSA extensions, missed synergies, and a lower multiple at the next exit.

This week, on your live or next carve-out, put the separation program in front of the deal team before the price locks. Two questions:

1. For every shared service on the TSA schedule, do we have a named owner, a replacement plan, a switch-off date, and a standalone cost line at market rate in the model.

2. If the parent degrades TSA service in month 6, what breaks first, what does the extension cost, and how much of year-one EBITDA is dependent on that extension never being needed.

Score each answer red, yellow, or green. Any red is a discount the seller has not yet handed you, and the diligence room is the last place to find it.

Mario

📉 89% net retention hid a 68% gross-retention cohort. A B2B SaaS company's legacy tier, the exact cohort targeted for repricing, was also its highest-churn segment, so a price increase would have tested loyalty where it was weakest. Segment retention by price tier before you model the increase.

🧭 The best PE operators ran a business, not just evaluated one. Battery Ventures promoting Brandon Gleklen to partner after eight years is now rare; most firms hire operating partners laterally because modeling and sourcing do not translate into running a portco P&L. Operating exposure is the 2026 credibility.

🏷️ Kneat sold to Thoma Bravo at roughly half its 2021 peak. Real enterprise customers in regulated life sciences and intact revenue, but a 2020-2021 cost structure that never adjusted when multiples compressed, which is why Thoma Bravo can buy the EBITDA path public markets would not wait for. The cost base was the problem.

🧩 A $380,000 advisory deck delivered two executed workstreams out of nineteen. Three Big Four consultants spent eleven weeks on a 140-slide plan the internal team barely opened; what works is an embedded value-creation unit that executes inside the portco for the hold. Embedded partners, not advisory firms.

🎙️ Most lost deal value dies in the first 100 days, not in the thesis or the model but in the execution architecture nobody built. - by Thomas Allgeyer

🎙️ McKinsey finds 94% of sponsors say portfolio-company leadership drives value creation, yet only 8% systematically invest in building it, and that gap is where credible plans lose momentum. - by Dr. Markus Schneider

🎙️ Technology works as a realization lever rather than the thesis itself, so the question that matters is whether the investment is translating into operating and economic outcomes. - by George Konstantopoulos

🎙️ Reshoring dollars land two tiers down in the fragmented base of machine shops and stampers, and that supplier base is where capacity tightens, pricing power appears, and PE is already buying. - by Frank Lazowski

🎙️ A new Stanford search-fund study shows the share of funded searchers who actually buy a company falling from 86% to 48%, as 190 new funds crowded in and median prices doubled to $16M. - by Paul W. Swaney III

🎙️ A platform paid 11x EBITDA for an add-on, then lost the 14-year head of sales who owned its top eight accounts because no one spoke to her in the first 30 days. - by Dieunor Michel, CFA

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Private credit's soft-landing story is meeting harder data. Non-accrual loans across Ares, Blackstone, Blue Owl, and Golub have hit their highest levels in at least five years, with defaults rising and more borrowers on watchlists, which raises the stakes on covenant terms and debt service for any leveraged portfolio company.

Employee benefit costs are set to jump again in 2027. Small-group insurers are proposing a median 14% premium increase, with 59% filing for 10 to 20% and 15% above 20%, a direct opex headwind that mid-market operators should build into 2027 budgets now.

Reimbursement timelines are shortening for medtech. CMS's new RAPID coverage pathway lets breakthrough devices use the same clinical evidence for Medicare coverage as for FDA approval, closing the years-long "coverage purgatory" and shortening time-to-revenue for device portfolio companies and their investment theses.

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