What Is a Reverse TSA? Definition, Examples and Key Terms (2026)
Buyers plan for the TSA they will receive and get blindsided by the one they must provide. What a reverse TSA covers, when it arises, and the terms that keep it short.
A reverse TSA is an agreement in which the buyer of a carved-out business provides transition services back to the seller, typically because functions the seller still needs were performed by people or systems that transferred with the divested unit.
The short answer
The definition above is the whole mechanism. In a standard transition services agreement, the seller keeps the divested business alive while the buyer stands it up. A reverse TSA runs the other way: the deal perimeter took something the seller still depends on, so the seller pays the buyer to keep providing it.
A concrete example. A corporate parent divests a product division, and the shared billing team happens to sit inside that division. On day one after close, the parent has no way to invoice its remaining customers. So the purchase agreement includes a reverse TSA: the buyer's newly acquired billing team runs invoicing for the seller's retained businesses for 12 months while the seller rebuilds the function.
Nobody plans to need one. That is the point. Reverse TSAs exist because carve-out perimeters are drawn around P&Ls and legal entities, not around who actually does the work.
How a reverse TSA arises in a carve-out
In any carve-out, services rarely map cleanly to the perimeter. Diligence tends to ask one question: what does the divested business take from the parent? The mirror question, what does the parent take from the divested business, gets asked late or not at all. When capability sits inside the carve-out, the dependency runs seller to buyer, and a reverse TSA is how it gets papered.
The three common cases:
- Shared-services teams that transfer. Billing, collections, payroll, IT support or customer service physically housed in the divested unit but serving the whole group.
- Systems and licences that transfer. The ERP instance, data centre or software licence follows the carve-out entity, and the seller's retained businesses still run on it.
- Plants and facilities that transfer. A site inside the perimeter manufactures components or provides warehousing the seller's remaining operations still consume.
Reverse TSA vs standard TSA
| Standard TSA | Reverse TSA | |
|---|---|---|
| Who provides | Seller | Buyer (the carved-out business) |
| Who receives | Buyer, to run the divested business | Seller, to run its retained businesses |
| Typical trigger | Divested unit relied on parent functions | Parent relied on functions that moved with the unit |
| Typical duration | 12 to 24 months, often with extensions | 6 to 18 months, usually shorter and capped |
Both agreements usually travel together in the same carve-out, priced on the same cost-plus conventions, and both are covered in more depth in our TSA glossary entry.
What buyers get wrong
For a PE buyer, the reverse TSA is an operating commitment made at the moment of maximum optimism, and it bites during the messiest phase of the hold.
It gets missed in diligence. The deal model treats the buyer as the dependent party. The seller's dependencies on transferred people and systems surface in separation planning, after price is agreed, when negotiating capital is spent.
It gets underpriced. Cost-plus pricing recovers the direct cost of the service. It does not price the distraction of running someone else's billing while executing a 100-day plan. The team serving the seller is the same team the value-creation plan assumes is available.
It runs open-ended. A seller with no rebuilt capability and no contractual pressure has no reason to hurry. Without hard end dates and escalating pricing, a 12-month reverse TSA becomes a 24-month one.
It has no exit ramp. The agreement often specifies what is provided but not how it winds down: no migration milestones, no data-handover plan, no staged reduction in scope.
Key terms to negotiate
- Scope schedule. A specific list of services, volumes and service levels. "Billing support" is a dispute; "invoice runs for entities X and Y, twice monthly, per the schedule" is a contract.
- Pricing convention. Cost-plus with a stated margin, mirroring the forward TSA, with escalators after the initial term to push the seller off the service.
- Term and extension caps. A hard end date, limited extension rights, and premium pricing for any extension the seller exercises.
- Service levels and caps on liability. The buyer is not a vendor by trade; performance standards should reflect that, with remedies scoped accordingly.
- Early-termination rights. The seller should be able to leave early as it rebuilds; the buyer should be able to exit if the burden materially exceeds the schedule.
- Data and IP handling. Who owns work product, how seller data is segregated on transferred systems, and what gets handed back at exit.
FAQ
What is a reverse TSA?
A reverse TSA is an agreement in which the buyer of a carved-out business provides transition services back to the seller, typically because functions the seller still needs were performed by people or systems that transferred with the divested unit.
How is a reverse TSA different from a normal TSA?
The direction of service flow. In a standard TSA the seller supports the divested business while the buyer stands it up. In a reverse TSA the buyer supports the seller's retained business, because the capability moved with the deal.
Who pays under a reverse TSA?
The seller pays the buyer, usually on cost-plus terms that mirror the forward TSA in the same transaction.
How long does a reverse TSA last?
Typically 6 to 18 months, shorter than forward TSAs, ideally with hard extension caps. It ends when the seller has rebuilt or replaced the transferred capability.
Why do buyers overlook reverse TSAs?
Because diligence models the buyer as the dependent party. The seller's dependencies on transferred people and systems only surface in separation planning, and by then the buyer is negotiating from a signed deal.
Related reading: What Is a Transition Services Agreement (TSA)? · What Is a Private Equity Carve-Out? · The PE Value Creation Glossary
