A carve-out is an acquisition with a TSA bolted on. The deal closes, the deal team disbands, and the operating team inherits eighteen months of seller dependencies. Buyer-side carve-out advisory is the practice that makes that inheritance work. This pillar lays out the lifecycle, the workstreams, and where the leverage sits.
A carve-out is the acquisition of a business unit, division, or subsidiary from a corporate parent. The buyer takes ownership. The parent provides continuity services under a TSA. The new entity stands up as an operating company. Carve-out advisory is the practice that makes all three of those things happen on time, on schedule, and at known cost.
Carve-out advisory work spans five distinct phases. Pre-LOI diligence assesses whether the target can be separated cleanly and at what cost. Pre-signing TSA negotiation locks in the service catalog, pricing, exit clauses, and governance. Day One readiness stands up the Newco operationally. Post-close stabilisation runs the TSA and prepares the exit. Clean break completes the separation and handles stranded cost.
The work is operational and contractual. Operationally, it covers IT applications, infrastructure, finance, accounting, HR, payroll, procurement, treasury, tax, legal, cybersecurity, and the Newco's own commercial operations. Contractually, it covers the TSA, the SPA exhibits relevant to operational separation, and any side letters or transition agreements that govern the relationship between the parent and the Newco after close.
A specialist carve-out advisor is not a strategy consultant, not a deal advisor, and not a generalist operating consultant. Carve-outs are technical work. The technical knowledge is what differentiates a buyer who exits the TSA on schedule from a buyer who pays extension fees for an extra year.
The same TSA looks different from the two sides of the table. The seller wants a comprehensive service catalog with conservative pricing, a stable revenue stream during transition, and an orderly exit that does not strand seller resources. The buyer wants a minimum viable service catalog, audited cost-plus pricing, a fast exit, and no stranded cost on the Newco side.
These objectives are not necessarily in conflict. But they require different advisors. A seller-side advisor optimises for the seller. A buyer-side advisor optimises for the buyer. An advisor that takes engagements from both sides on different deals has structural conflicts that compromise its usefulness on any single deal.
The largest carve-out advisory practices (Big 4 and tier two strategy consultancies) work both sides. They are usually skilled at the technical work, but the same partner who advised a seller on TSA pricing methodology last year may be advising a buyer on how to push back against that methodology this year. The buyer rarely knows.
A specialist firm that only ever works buyer-side has no such conflict. The firm's only commercial relationship is with the buyer. The advice is calibrated for the buyer's position. The redlines push in the buyer's direction. The governance design favours the buyer. Independence is the product.
Every carve-out runs through five phases. The boundaries between them are not always crisp, and on complex deals they overlap, but each phase has distinct deliverables and distinct leverage points.
Phase 1: Pre-LOI diligence. The buyer assesses separability. Can this business actually be carved out? At what cost? With what TSA duration? What are the shared systems, shared people, and shared facilities that need to be unwound? The output is a separability assessment that feeds into bid pricing and into the SPA reps.
Phase 2: Pre-signing. The TSA is on the table. Service catalog, pricing, exit clauses, SLAs, and governance are all in motion. This is the highest leverage window. Four weeks of focused work here sets the cost ceiling and the schedule for the next eighteen months.
Phase 3: Day One. Close. The Newco is an independent entity. The first ninety days are about operational stand up, not yet about TSA exit. Each of the nine standard workstreams hits its Day One readiness criteria.
Phase 4: Post-close stabilisation. Months four through fifteen of a typical eighteen month TSA. The Newco operates while consuming TSA services. Mid-TSA renegotiation, exit ramp execution, governance committee, service-level enforcement. The bulk of the operational work happens here.
Phase 5: Clean break. Final three to six months. Each service exits on schedule. Stranded costs are addressed. A small tail of services may continue under a post-close services agreement, but with a defined end date.
Most carve-out diligence focuses on the financial statements and the commercial outlook. Separability often gets a single page in the quality of earnings memo, with a generic note that a TSA will be required. That generic note can hide eight figures of operational risk.
A working pre-LOI separability assessment covers four areas. Shared systems and applications: which systems run the target business and which of those are shared with the parent. Shared people and locations: which roles support both the target and the rest of the parent. Shared infrastructure: data centres, network, security operations, finance back office. And shared contracts: vendor agreements, licences, customer contracts that name the parent entity.
The assessment produces three outputs. An estimated TSA scope and duration. An estimated separation cost (run rate plus stand up cost on the Newco side). And a list of separability red flags that should be reflected in bid pricing or in SPA reps.
The diligence work is usually scoped tighter than the post-close work. Two to four weeks, often parallel with financial diligence. The output is a memo that the deal team can use directly in bid construction. Where the seller is running a competitive process, this work is essential. The buyer that does it consistently outbids the buyer that does not, because separability cost is priced into the bid rather than absorbed post-close.
The TSA pre-signing window runs from when the deal is in exclusivity through to SPA signature. Two to twelve weeks typically. During this window, the buyer has the leverage of an unsigned counterparty. The seller wants the deal closed. Every clause in the TSA is still negotiable. After signature, every change becomes an amendment.
The pre-signing package is a focused four week sprint. Service catalog audit produces a line by line position on every service. Pricing benchmark establishes target mark-ups and pass-through rules. Exit clause review rewrites the extension fee curve and the service withdrawal rights. SLA design makes service levels enforceable. Governance design sets the charter the buyer will run for the next eighteen months.
The deliverable is not a memo. It is a redline package ready to go into the SPA negotiation, with specific positions, target numbers, and walk away thresholds. The deal team uses it directly. The legal team uses it to redline the contract. The post-close operating leader uses it to plan the operating cadence.
For carve-outs in active deal process, this is the single most valuable engagement in the entire lifecycle. The economic impact across an eighteen month TSA can easily be ten to twenty times the engagement fee. TSA pre-signing review is the firm's standard package for this window.
Day One is the legal close. From that moment, the Newco is an independent entity, the TSA is live, and the buyer is operating a company while consuming services it does not directly control. The first ninety days are about getting each of the nine standard workstreams to a Day One ready state.
The nine workstreams are: IT applications and infrastructure, finance and accounting, HR and payroll, procurement, treasury and cash management, legal and corporate entities, tax, cybersecurity and data protection, and the Newco's commercial and customer facing operations. Each workstream has its own Day One ready checklist, its own owner, and its own exit plan from the TSA.
Day One readiness is not the same as TSA exit. The Newco can be Day One ready while still consuming all TSA services. Day One readiness means the basic operating mechanics work: payroll runs on the right entity, bank accounts are operational, customers are invoiced from the Newco, taxes are filed by the Newco, IT systems are addressable from the Newco side. The TSA continues to provide everything else.
A common Day One failure pattern is conflating operational stand up with TSA exit. The first ninety days are about stand up. The exit work begins around day sixty when the buyer has enough operating data to build the workstream by workstream exit ramp. Day One readiness program is the firm's package for this window.
From month four to month fifteen on a typical eighteen month TSA, the Newco runs in stabilisation. Services are being consumed. Invoices are being paid. The buyer's team is building parallel capability. The exit ramp is taking shape. This is the longest phase and the one in which most carve-out value is either captured or lost.
Three workstreams run in parallel. Exit ramp execution converts the negotiated exit clauses into actual service migrations. Each service has a target exit date and a workstream lead responsible for hitting it. Mid-TSA renegotiation targets specific services where the original draft no longer matches consumption reality. Service-level enforcement turns SLA failures into governance events and credit recoveries.
The buyer side cadence runs three layers. Weekly workstream meetings with the seller's transition counterparts. Monthly governance committee for formal decisions. Quarterly portfolio review for sponsor or operating partner oversight. This cadence is what separates a TSA that lands on schedule from one that drifts.
When stabilisation drifts, the firm runs TSA exit acceleration as a focused intervention. Where the issue is pricing or scope, TSA renegotiation targets the specific services that need a reset.
A clean break is not just contractual exit. It is the moment the Newco's run rate stabilises at its independent operating cost, with no residual seller dependency and no allocated parent overhead masquerading as Newco operating expense. Reaching a clean break requires identifying stranded cost early and unwinding it deliberately.
The four common stranded cost categories are: allocated software licences that do not transfer cleanly, shared data centre or cloud infrastructure that has to be migrated, headcount that carries both parent and Newco work, and overhead allocations that survive past the TSA exit unless explicitly removed. Each requires a workstream plan with an owner and a target removal date.
Some stranded cost survives the TSA exit and runs as ongoing Newco operating expense. That is acceptable when it is documented and intentional. What is not acceptable is unbudgeted stranded cost that surfaces three months after the TSA terminates and creates a margin surprise the operating team did not see coming.
A working clean break plan identifies each stranded cost source pre-exit, builds a removal or absorption plan, and documents the residual ongoing cost. The Newco then begins independent operating life with a known cost base. Stranded costs is covered in detail in the glossary.
Carve-out advisory is the operational and contractual work required to separate a business unit from a parent company and stand it up as an independent entity. The work spans diligence, TSA negotiation, Day One readiness, post-close stabilisation, and the eventual clean break.
Buyer-side advisory works for the acquirer. The deliverables, the leverage points, and the success metrics are all defined from the buyer's perspective. Seller-side advisory works for the divesting parent and optimises for a clean exit at the highest possible TSA recovery rate. The two perspectives often conflict and require different advisors.
As early as pre-LOI diligence on transactions where carve-out complexity is significant. At minimum, pre-signing on the SPA. Advisory engagements that begin only at signature or post-close have less leverage on the TSA and on the operational separation plan.
Private equity firms acquiring a divestiture from a corporate parent. Corporate acquirers buying a business unit from another corporate. Newly carved-out portfolio companies that need an independent advisor to run their side of the TSA. Corporate divestiture offices that want a buyer-side advisor to recommend to their acquirers.
A negotiated TSA with audited pricing, a workable exit ramp, enforceable SLAs, a buyer-chaired governance committee, a Day One operational readiness program across the nine standard workstreams, and a documented path from Day One to clean break with stranded costs identified.
Twelve to twenty four months from close is typical. Eighteen months is the most common single duration. Simpler carve-outs with few shared systems can be done in six to nine months. Complex separations with shared ERP, shared data centre, and significant headcount transfer can run twenty four months or longer.
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