TSA Exit Acceleration
Model the choice before the seller models it for you.
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A TSA exit vs extension cost analysis quantifies whether to invest more in accelerating the exit or accept the seller's extension fee curve and run longer. The math is simple once the inputs are clean. This article lays out the inputs, the model, and the decision rule. It sits inside the broader TSA exit strategy framework.
The exit vs extension question almost always surfaces between month nine and month fifteen of an 18 month TSA. The Newco is running, the early exits are in flight, and the long lead workstreams (typically ERP and HR) are either on schedule or visibly slipping. The operating partner asks whether to spend more to hit the original date or to accept extension and stretch the schedule.
The question is binary in framing and continuous in answer. Pure acceleration. Pure extension. A blend that accelerates some workstreams and extends others. The right answer almost always sits in the middle, but the middle is invisible without the model.
Most buyers attempt this analysis with a pricing tab in a finance model and the seller's extension fee schedule. That is not enough. The full cost of extension includes management attention, the value creation plan delay, and the stranded cost run rate that does not exit until the underlying service does. None of those line items appear in the invoice.
A working model captures all of them. The output is a single page with three numbers. The cost of pure acceleration. The cost of pure extension. The cost of the blend. The blend almost always wins.
Input one. Base TSA monthly cost. The run rate of the services that would extend, before any extension premium, broken out by workstream. This is in the invoice. The number is reliable.
Input two. Extension fee curve. The escalator that applies on top of base. Most curves run from 110 percent at the first ninety days to 150 percent by month nine of extension. The numbers are in the contract.
Input three. Acceleration investment. The incremental cost to hit the original exit date. This is usually a combination of external advisor fees, contractor capacity, software licence acceleration, and overtime. The number is estimable to within twenty percent in a one week scoping exercise.
Input four. Stranded cost run rate. The cost the buyer continues to pay until the underlying service exits, regardless of whether the TSA is extended or terminated. Software licences and allocated headcount are the largest items.
Input five. Probability of slip on the accelerated plan. A pure acceleration plan rarely hits 100 percent of the original date. A 70 to 85 percent probability is realistic. The model has to discount the accelerated plan by the residual extension fee exposure if it misses.
Input six. Management attention cost. The opportunity cost of operating partner, Newco CFO, and Newco CIO time spent managing an extended TSA. Conservatively $50K to $150K per month for a mid-market carve-out.
Input seven. Value creation plan delay impact. The dollar value of the months by which an extended TSA delays the value creation plan. For a typical PE thesis, a six month delay costs 50 to 200 basis points of IRR. Operating partners can quantify this for their own thesis.
Column one. Pure acceleration. Total cost is the base TSA cost through the original exit date, plus the acceleration investment, plus the probability weighted residual extension exposure if the plan misses. This number is usually the highest gross investment but the lowest total cost when the plan is realistic.
Column two. Pure extension. Total cost is the base TSA cost through the original exit date, plus the extension fee escalator applied to the extended months, plus the stranded cost run rate for the extended period, plus the management attention cost, plus the value creation plan delay impact. This number is usually the highest total cost and the lowest gross investment.
Column three. The blend. Acceleration applied to the workstreams where the marginal cost of acceleration is low and the value of hitting the date is high. Extension accepted on the workstreams where the opposite holds. The blend treats each workstream as an independent decision and aggregates the totals.
Across multiple carve-outs the blend wins by 20 to 40 percent against pure acceleration and 30 to 60 percent against pure extension. The win comes from not paying the extension fee curve on workstreams where the buyer can finish on time, and not over investing in acceleration on workstreams where the dependency chain makes early finish impossible.
The first surprise is the size of the extension fee impact. A 25 percent escalator on a $600K monthly run rate is $150K per month of extension. Over a six month extension, that is $900K of extension fees alone, before stranded cost or management attention. Most operating partners underestimate this until they see the model populated.
The second surprise is the value of the value creation plan delay. A six month TSA slip that pushes operational improvements out by the same six months can cost more in IRR impact than the entire TSA itself. PE operating partners understand this intuitively. Putting a dollar value on it changes the conversation.
The third surprise is the asymmetry in acceleration economics. Some workstreams have a steep cost curve to accelerate. Doubling the cost of an ERP cutover does not get it done in half the time. Other workstreams have a flat curve. Two more contractors on a procurement cutover can shave weeks off the date. The blend identifies which is which.
The fourth surprise is the option value of extending. An extension fee is a put option on time. Buyers who never plan to extend often discover that a small targeted extension on one or two workstreams costs less than the acceleration spend that would have eliminated it. The model captures this by valuing each workstream independently.
A working decision rule. Accelerate workstreams where the marginal cost of acceleration is below 50 percent of the avoided extension fee. Extend workstreams where the marginal cost of acceleration is above 100 percent of the avoided extension fee. For workstreams in the middle, the decision turns on the value creation plan delay impact and the operating partner's confidence in the acceleration plan.
Almost every TSA produces a three way split. A third of the catalog accelerates. A third extends. A third stays on the original schedule. The exact mix depends on workstream complexity and dependency structure.
The rule is conservative by design. It treats the acceleration plan as 80 percent likely to land, not 100 percent. It assigns the residual extension exposure to the accelerated column. Buyers who model acceleration as a sure thing routinely under invest in extension planning and pay for it later.
A one page model with these inputs takes a senior advisor and the Newco CFO two days to build and one governance committee meeting to review. The output is a decision that survives the next six months of TSA execution without re-litigation.
The model is buyer-side. The output is not shared with the seller. What is shared with the seller is the decision. The buyer announces in governance that it will exit certain workstreams on the original schedule and extend others under specific terms.
A documented decision in governance changes the seller's posture. The seller knows which workstreams are at risk of extension and can resource them accordingly. The buyer signals that extension is not a default. It is a deliberate choice on specific items, priced into the value creation plan.
Sellers often push back on partial extension because it complicates their planning. The buyer's response is that the contract permits service level extension, the buyer has elected to use that right, and the seller is welcome to discuss alternative terms. Most sellers accept partial extension once the buyer has shown the discipline of choosing.
A TSA exit vs extension analysis is one of the highest leverage one page models in the entire engagement. Build it. Review it monthly. Use it to make the decisions that the contract leaves open.
What buyers actually pay across workstreams, with ranges that hold up under independent benchmarking.
Read the article →The fifteen milestones that decide whether a TSA exit lands on schedule, and how each is enforced through governance.
Read the article →The patterns that cause TSA exits to slip, and the early signals that surface them in the governance forum.
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