Blog · TSA Diligence

Where the QoE ends, the TSA starts billing. Reconcile both.

The TSA and quality of earnings overlap is the cost zone where standard QoE reporting and TSA economics either agree or quietly diverge. Most deal teams discover the gap after Day One when the actual TSA invoice arrives and does not tie back to the QoE adjustment build. Buyer-side TSA diligence forces the reconciliation in pre signing so the investment committee memo, the QoE report, and the TSA cost model agree on the same numbers. The work sits inside the broader TSA due diligence practice.

4
Reconciliation Zones
100 to 300 bps
Typical Gap
7 min
Read Time
2026
Last Updated
Section 01

The QoE stops where the TSA starts. Different teams, different scope.

Quality of earnings reports document the seller's historical financial performance, normalize one-off items, and project a forward EBITDA basis the buyer can underwrite. The QoE team is typically an accounting firm with deep expertise in financial statement analysis. The team produces an adjustment schedule that walks reported EBITDA to a defensible adjusted EBITDA.

The TSA introduces a parallel set of costs that the QoE often does not capture explicitly. Allocated overheads from the seller's shared services. Software licenses the seller covered through enterprise agreements. Headcount that the seller will hand back to its own organization. Real estate that came from the seller's portfolio. The QoE may normalize these as standalone cost burdens. The TSA prices them as services the buyer will pay for during transition.

The gap shows up when the TSA cost is higher than the standalone cost that the QoE assumed. The deal team funded the deal off the QoE adjusted EBITDA. The actual post close P&L absorbs the TSA cost, which often runs 110 to 130 percent of the standalone equivalent. Year one EBITDA misses budget. The operating partner has to explain the variance.

Buyer-side TSA diligence reconciles the two views during pre signing. The deliverable is a walk schedule that shows each cost category in QoE normalized terms, in TSA contractual terms, and in standalone steady state terms. The walk surfaces the gaps and lets the deal team decide whether to negotiate them away, fund them in the budget, or accept them as transition cost. The work pairs with the TSA diligence checklist.

Section 02

Standalone cost adjustments. The QoE normalizes, the TSA bills.

The first reconciliation zone is standalone cost adjustments. QoE teams usually add standalone costs to the historical results to reflect what the carved-out business would cost to run on its own. CFO function. CIO function. Treasury. Tax. HR leadership. These standalone costs become part of adjusted EBITDA.

The TSA prices these same functions as services the buyer pays the seller for during the transition. The TSA price is rarely identical to the QoE standalone estimate. Sometimes the TSA is higher because the seller's cost-plus structure includes mark-up that the QoE did not anticipate. Sometimes the TSA is lower because the seller is bundling capacity that the QoE estimated as discrete hires.

The reconciliation forces explicit treatment. Where the TSA price exceeds the QoE standalone, the deal team either negotiates the price down or accepts the higher cost in the post close P&L. Where the TSA price is lower than the QoE standalone, the deal team should ask whether the seller has under priced the service and whether the gap will reappear at exit when the buyer has to stand up the function.

The walk should be done line by line, not in aggregate. Aggregate reconciliations hide compensating errors that explode at exit when one cost line was understated. The buyer side advisor produces the line by line walk during pre signing. The work pairs with TSA cost modeling in diligence.

Section 03

Allocated overheads. The seller's method becomes the buyer's bill.

The second reconciliation zone is allocated overhead. The seller's corporate overhead allocations to the carved-out business unit appear in the historical financials. The QoE team typically removes or normalizes these because the buyer will not absorb the seller's corporate overhead post close. The TSA reintroduces them, often using a different allocation methodology than the historical numbers.

The reconciliation needs to align the allocation methodology between the QoE and the TSA. If the QoE removed corporate overhead at 4 percent of revenue but the TSA bills back overhead at 6 percent of revenue, the buyer is paying 200 basis points more than the QoE projected. The deal team needs to know this before signing.

The redline often tightens the TSA overhead allocation. Sellers default to broad allocations that maximize TSA revenue. Buyers should push back to methodologies that align with the QoE normalization, such as direct attribution where possible and capped allocations where direct attribution is impractical.

Stranded overhead is the parallel problem on the seller's side. The seller's overhead does not shrink when it loses the business unit, which is why the seller is motivated to load overhead allocations into the TSA. Understanding the seller's stranded overhead problem helps the buyer negotiate. The work pairs with stranded costs in carve-outs.

Section 04

Software licenses and shared contracts. Enterprise agreements do not survive carve-out.

The third reconciliation zone is software licenses and shared third-party contracts. The seller's enterprise agreements with the major software vendors typically priced the carved-out business at a discount tied to the seller's overall volume. The TSA passes those licenses through at the seller's cost during transition. The buyer's standalone license cost post TSA is usually higher because the buyer cannot replicate the seller's enterprise pricing.

The QoE often normalizes software cost based on the historical allocation, which is at the seller's enterprise rate. The TSA bills at the same enterprise rate during transition. The post TSA cost (what the buyer will pay when standing alone) is higher. The reconciliation needs to surface the post TSA cost step up so the value creation plan reflects reality.

The buyer side advisor identifies the major vendor contracts during diligence and estimates the post TSA standalone cost. Common step ups include 20 to 40 percent for major enterprise software, 30 to 60 percent for cloud infrastructure that loses the seller's enterprise discount, and 10 to 25 percent for collaboration tools and productivity suites.

The buyer can sometimes negotiate vendor consents that preserve enterprise pricing for the carved-out business. The buyer can sometimes consolidate vendor spend across its own portfolio to recover lost volume discounts. The buyer side advisor identifies these opportunities during diligence and feeds them into the value creation plan. The work pairs with third party vendor consents.

Section 05

One-time TSA costs not in QoE. Setup, exit, audit, separation.

The fourth reconciliation zone is one time TSA cost that the QoE does not include. Setup fees at Day One. Exit transition fees at TSA end. Audit fees for SLA and pricing verification. Separation costs for systems, networks, identities, and processes. These are not run rate. The QoE excludes them as not normalized. The TSA bills them as real cash out of the buyer's pocket during the transition period.

The deal team needs to fund these one time costs separately. The buyer side advisor produces an estimate during pre signing based on the TSA terms and the historical cost of similar separations. Total one time TSA cost for a mid-market carve-out typically runs 0.5 to 2 percent of deal value. For larger carve-outs the percentage drops but the absolute number can run into eight figures.

The funding plan should reserve for the one time costs at closing. The buyer side advisor recommends a separation reserve sized to 1.5x the estimated cost to cover variance and contingency. The reserve gets drawn down as actual costs hit. The variance is reported quarterly to investment committee.

Separation reserve is a place where the QoE and the TSA cost model need to align. If the QoE treats separation as a one time addback to historical EBITDA, the deal team should verify the addback is set at the realistic estimate, not at the seller's lowball number. The work pairs with the 100 day plan.

Section 06

Working the reconciliation into the deal memo. Investment committee needs the bridge.

The reconciliation should appear in the deal memo as a bridge schedule. The schedule walks reported EBITDA to QoE adjusted EBITDA to TSA period EBITDA to steady state post TSA EBITDA. Each step has its own line items and assumptions. The bridge gives investment committee a clear view of how earnings evolve through the carve-out.

The TSA period EBITDA matters most for the buyer's funding and operating plans. Year one and year two EBITDA after Day One typically run 5 to 15 percent below QoE adjusted EBITDA because of TSA cost layering and stranded cost layering. The deal team that funded to QoE without the bridge will face cash pressure.

Steady state post TSA EBITDA is the basis for the exit valuation. The bridge needs to show explicitly how the buyer gets from TSA period EBITDA to steady state. Specific cost reductions, specific stranded cost eliminations, specific value creation actions. The bridge becomes the operating playbook for the operating partner and the Newco CFO during the TSA period.

The buyer side advisor produces the bridge during pre signing. The deal team uses it in investment committee. The operating partner uses it in board reporting. The Newco CFO uses it in the year one and year two budgets. The bridge is the artifact that ties together the QoE, the TSA cost model, and the value creation plan. The work pairs with operating partner board reporting.

Section 07

Engage TSA diligence alongside QoE. Two streams, one reconciliation.

The buyer side advisor runs the TSA diligence stream in parallel with the QoE engagement. The two streams share data sources, share assumptions, and produce reconciled output. The deal team gets a coherent view of post close economics rather than two disconnected reports that the operating partner has to reconcile at Day One.

The engagement model is Fixed Fee or Portfolio Retainer. Fixed Fee for a single deal. Portfolio Retainer for PE platforms running multiple carve-outs across the portfolio. The buyer side advisor scopes the work during deal intake and delivers a fixed-fee proposal within 48 hours of intake. The work pairs with diligence timeline and team.

The QoE provider does not usually do the TSA cost work because the skill set is different. QoE teams are accounting specialists. TSA diligence teams are operating specialists who understand the carve-out economics and the seller drafting patterns. The buyer side advisor brings the operating lens that the QoE does not provide.

The reconciliation discipline pays for itself in the first month after Day One. The deal team that funded the deal off a reconciled bridge does not get surprised by the TSA invoice. The operating partner does not get surprised by year one EBITDA. The Newco CFO does not get surprised by the cash burn. The buyer side advisor builds the reconciliation so all of these surprises become budgeted realities instead.

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