
The model’s $22.50 monthly tool cost multiplied by 700 seats is $15,750 a month, or $189,000 a year. Assess SaaS price increases against the part of that bill that actually changes. Use the new vendor quote to calculate the difference, then show what it does to your margin until the next agreed client price step.
Assume the seat count and client fees remain unchanged for the initial comparison. Hold other delivery costs fixed so you can isolate the tool change. If the quote also changes the commitment or licensed quantity, calculate those effects separately before calling the result a price increase.
Identify What the Vendor Is Increasing
Here, tool cost means the software used to deliver the managed service. It doesn't mean every software subscription you resell to clients. The model’s $22.50 US monthly amount is the delivery-tool allocation for a seat priced at $225.
A seat in the model is the larger of the covered user count and device count. Its US example has 700 seats. Your vendor may bill a different unit, so confirm the licensed quantity rather than assuming every line can be multiplied by the client seat count.
For each affected line, take the quoted new unit rate less the current unit rate. Multiply that difference by the quantity actually billed. Add the changed lines to find the additional monthly cost, using the vendor’s effective date and billing basis.
Do not apply one vendor’s announced percentage to the entire delivery stack. Include only the affected cost. If the new quote requires a different quantity or package, preserve that distinction so the owner can see which part came from price and which part came from a changed purchase.
Turn the Quote Into a Seat Cost
Call the verified additional monthly vendor cost A. At the model’s unchanged 700 seats, A divided by 700 gives the added monthly cost per seat. The new whole-stack allocation is $22.50 plus that per-seat difference, provided the old allocation describes the same scope.
Say, as a hypothetical, the whole $22.50 stack rose by 10%: $22.50 times 10% is $2.25 more per seat each month. At an unchanged 700 seats, $2.25 times 700 is $1,575 a month, and $1,575 times 12 is $18,900 a year. The 10% is an illustration, not a forecast of any vendor’s increase.
For a full year at the same quantity, multiply A by 12. That is the annual run rate, meaning the expense if the monthly change continues for a complete year. It is not necessarily the expense that lands in the current financial year.
Use the actual effective date for the current-year forecast. Keep the old price on the earlier billing periods and the quoted price on the affected periods. If billed quantities change, recalculate the line rather than extending the original run rate unchanged.
The model’s baseline gives you a reconciliation check: $22.50 multiplied by 700 is $15,750 each month, and $15,750 multiplied by 12 is $189,000 a year. If the tool register doesn't reconcile to your actual expense, resolve that difference before layering a price change onto it.
Show the Effect on Delivery Margin
Gross profit is managed-service revenue less burdened delivery labor and tools. Gross margin is that gross profit divided by managed-service revenue. Keep overhead and owner profit separate from this delivery calculation.
At $225 per seat and 700 seats, monthly managed-service revenue is $225 × 700 = $157,500. The tool allocation is $15,750 / $157,500 × 100 = 10% of that revenue. That is a tool share of revenue, not an assumption about how much a supplier will raise prices.
With revenue and other costs unchanged, the added monthly cost A reduces monthly gross profit by A. To find the margin reduction in percentage points, divide A by $157,500 and multiply by 100. Use the verified quote amount in that calculation; the result depends on the affected cost, not the vendor headline alone.
The model’s fully loaded managed-service gross margin target is 50%. Compare the revised result with your actual starting margin and that target. The target is not a break-even line: an agreement below it can still contribute toward overhead, but it delivers less margin than planned.
In that same hypothetical, $1,575 / $157,500 × 100 = 1.0 percentage point of margin. If the starting managed-service margin were exactly the 50% target, the revised margin is 50% − ($1,575 / $157,500) = 49%, with revenue and all other costs unchanged.
Calculate the Cost You Will Carry
An existing fixed client fee may leave you carrying the increase until the next authorized price step. Forecast that period from the agreements, using each client’s dates. Do not assume all clients change price when the vendor does.
Check whether the vendor cost can actually fall when a client leaves. A committed minimum may keep the charge on your books after the associated client revenue ends. Your cost forecast must reflect that commitment rather than treating every tool line as immediately variable.
Assign an owner to update the forecast when the quote is accepted or changed. Absorbing the increase is a financial decision that should appear in the budget.
Use the Agreed Annual Client Step
The model calls for a fixed 5% annual client increase written into the contract and communicated ahead of time. It rejects linking that step to CPI or passing supplier increases through at cost. Apply the actual agreement and notice process rather than treating a supplier quote as permission to alter a client invoice.
For a hypothetical unchanged $225 seat fee, calculate the 5% step as $225 × 0.05 = $11.25. The new monthly fee is $225 + $11.25 = $236.25. If that step applies to all 700 seats for a complete month, calculate the added revenue as $11.25 × 700 = $7,875. Keep staggered client dates visible in the forecast.
Compare that additional revenue with the verified added tool cost A for the same period. In the whole-stack illustration, compare the $7,875 of added client revenue with $1,575 of added tool cost for the same full month. The difference still has to cover any other cost changes. It is not a complete profit forecast or a reason to assume the next annual step can absorb every vendor decision.
Eric Anthony suggests allowing for a possible replacement tool in the service price so changing tools need not immediately force a client price change. He says the contingency depends on the business. That practitioner advice supplies no universal reserve percentage.
Compare the Alternative With Its Whole Cost
A stack change needs a broader calculation than the new subscription price. Include the old commitment that would remain alongside the replacement’s recurring cost. Add the migration work and any period of overlap without counting the same cost twice.
Ask the technical owner to establish which capability would move and what must be tested before retiring the existing tool. The model includes baseline security in every plan. A lower bill doesn't establish that an alternative provides the coverage your agreement requires.
Prepare the decision from the actual quote. Keep its effective date and billed quantities beside the monthly cost difference, then forecast the exposure through the client’s agreed price steps. Compare that result with the tested cost of an alternative before deciding what to carry or replace.
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Written by Graham Whitfield
MSP Outpost publishes information, not legal, financial, insurance, tax or compliance advice, and reading it creates no professional relationship. For decisions about your business, talk to a qualified professional.
