TSA Renegotiation
Tiers that track your actual consumption.
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TSA volume tier pricing is the mechanism that adjusts the buyer's TSA charge as volumes change during the transition. Without volume tiers, the buyer pays full price for capacity that is no longer needed once workstreams cut over. With them, the price tracks the actual consumption. Volume tier design is one of the most overlooked levers in TSA negotiation, and the asymmetry favors the seller when buyers do not push back.
TSA volume tier pricing exists because the volume of services consumed during the TSA changes substantially. At Day One the buyer consumes the full slate of services. Six months later, the buyer has cut over payroll and procurement, and the consumption pattern is half what it was. Without a volume tier, the buyer continues to pay the Day One rate for services that are partially used or no longer used. The TSA bill stays flat while the buyer's actual demand falls.
The seller's preferred posture is a fixed monthly fee, where the buyer pays the same amount each month regardless of consumption. The fixed monthly fee is simple to administer, predictable for the seller, and expensive for the buyer in any scenario where the buyer cuts over early. The buyer's preferred posture is volume based pricing, where the bill tracks the consumed units. The negotiated middle ground is volume tier pricing, where the price changes as consumption crosses defined thresholds.
The trade off is administrative cost versus pricing accuracy. Fully volume based pricing requires the seller to measure and report consumption every period, which adds operational burden. Volume tier pricing requires only that consumption be measured against the tier boundaries, which is much less burdensome. The disciplined approach is to push toward tier pricing for any service where consumption is reasonably measurable. The broader pricing model context sits in TSA pricing models explained.
Model one is the step tier. The price drops in defined steps as consumption falls below defined thresholds. For example, full price up to 80 percent of baseline consumption, 75 percent of price between 50 and 80 percent of baseline, and 50 percent of price below 50 percent of baseline. Step tiers are easy to administer and easy to predict. The disadvantage is that consumption just above a tier boundary triggers no relief.
Model two is the linear tier. The price scales linearly with consumption between defined floor and ceiling thresholds. For example, full price at 100 percent baseline consumption, half price at 50 percent baseline consumption, with linear interpolation in between. Linear tiers track consumption more accurately and remove the boundary anomalies. The disadvantage is that the calculation requires period level reconciliation.
Model three is the take or pay tier. The buyer commits to a minimum volume each period and pays for that minimum even if consumption is lower. Above the minimum, the buyer pays the additional volume at a defined unit rate. Take or pay protects the seller from steep volume declines and gives the buyer visibility into the floor. The discipline is to set the minimum based on the buyer's planned exit schedule, not on the seller's preferred floor.
Sellers hide leverage in three places. First, in the definition of the baseline. If the baseline is set at the highest volume month in the trailing 12 months, the buyer starts at the top and the tier discounts kick in only after volume has fallen significantly. The disciplined buyer pushes for the baseline to be the planned Day One volume, not a backward looking high water mark.
Second, in the unit of measurement. A service measured by the count of users is not the same as a service measured by transactions per month. Sellers favor units that change slowly. If the unit is users and the buyer cuts over a department, the user count drops cleanly. If the unit is logins per month, the user count drops faster because logins drop before the formal cutover. The disciplined buyer pushes for the unit that tracks the actual cost driver and that the buyer can verify independently.
Third, in the floor of the tier table. Many tier tables have a floor below which the price does not drop further, even if consumption goes to zero. The floor is set high enough to protect the seller's gross margin. The disciplined buyer challenges the floor and either negotiates it down or requires the seller to justify the floor with documented stranded cost. The pattern of pre signing leverage that protects buyers is in TSA pre signing leverage.
A volume tier clause without the right operational clauses is a clause that the seller can run around. Four clauses make the tier real. First, a measurement clause that defines exactly how consumption is measured, by whom, and how disputes are resolved. Second, a reporting clause that requires the seller to report consumption each period within a defined window. Third, a true up clause that reconciles the actual consumption against the billed consumption.
Fourth, an audit clause that gives the buyer the right to verify consumption against source systems. The audit right is the discipline that keeps the tier honest. Without it, the buyer is dependent on the seller's self report. The audit right should be exercisable on reasonable notice, with the buyer's auditor or an independent third party able to access the source data. The right is in the TSA, not negotiated when the dispute arises. The audit right context sits in TSA audit rights.
Service catalog discipline is the foundation. The volume tier applies to each service in the catalog independently. The catalog defines the service, the unit of measurement, the baseline volume, the tier table, and the floor. Without a clear catalog, the volume tier is unenforceable. The catalog is the artifact that the buyer's finance team uses to validate every invoice.
The volume tier model is built before signing. The buyer projects consumption month by month over the TSA period, applies the proposed tier table, and computes the expected total spend. The model is then stress tested against the buyer's exit schedule. If the buyer plans to cut over payroll in month three, what happens to the payroll service charge in months four through twelve? If the buyer slips the cutover by two months, what is the cost impact?
The model exposes the negotiation priorities. Services where the projected consumption falls fastest are the services where volume tier negotiation is most valuable. Services where consumption stays flat are less sensitive to the tier structure but may need tighter mark up and pass through discipline instead. The model becomes the basis for the negotiation playbook.
A disciplined buyer brings the model to the negotiation. The seller's counter offer is compared against the model. Every concession is priced. Every alternative structure is modeled. The negotiation becomes evidence based rather than rhetorical. The benchmarks for typical tier structures sit in TSA renegotiation, where the post signing version of this work is run when the original TSA did not include volume tier protection.
The pricing structures that shape the TSA bill and the trade offs in each one.
Read the article →The fundamental pricing choice and where each model favors the seller or the buyer.
Read the article →The mark up ranges that disciplined buyers tolerate and the ranges that signal a fight.
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