The average carve-out loses around three quarters of operating momentum between announcement and closing — not because the strategy is wrong, but because the operational separation is treated as a workstream and not a programme. This guide is the playbook we hand to clients on the first day of a sell-side carve-out, drawn from twenty-two completed separations across European and US markets.
I. The hidden tax
There is a recurring pattern: leadership signs off on a transaction that values the carved-out unit on its own P&L, but the unit's working life depends on services that don't show up on that P&L — IT, finance shared-services, regulatory cover, and the corporate-development team that brokered every prior deal.
II. A four-quarter cadence
We organise the operational separation in four quarters, anchored to signing rather than close. Each quarter has a non-negotiable deliverable that survives the closing-day rush:
Quarter 1 — Read the shared lines
Two weeks of interviews and a single deliverable: a one-page map of every shared service, who owns it on each side after close, and the headline-grabbing risks. We do this before the data room is built.
Quarter 2 — Frame the TSAs
Set the scope, duration and pricing of every transitional service contract. The TSA is the only living document during the next two years; getting it right is the difference between a clean exit and a litigation timeline.
“The TSA we wrote in week three of the deal was the document we read most often in year two. Get the basics right and the exit is mechanical.”
Quarter 3 — Stand-alone the back office
By the third quarter we want every back-office function operating in a stand-alone configuration, even if some are still consuming TSAs. The discipline of running the entity at arm's length surfaces the silent costs that the model missed.
Quarter 4 — Close, then run
Close happens in the fourth quarter, and immediately we move into a 100-day run-book. The first 100 days post-close determine whether the new entity carries momentum or has to rebuild from a standstill.
III. The five mistakes we see repeatedly
There are five errors that account for most carve-out underperformance. Each is avoidable; together they explain the average three-quarter slump that opens this guide.