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The Field-Service SLA Economics Calculator

A faster response promise is not just a better service level — it is an operating constraint. This separates the cost of the visit (which you'd incur under any tier) from the cost of the reservation (which only the tighter promise creates), and answers the question that decides the tier: does the premium cover the cost the promise adds?

ILLUSTRATIVE — YOUR INPUTS, YOUR NUMBERS · NOTHING LEAVES YOUR BROWSER

Your operation & this SLA tier

Defaults describe one illustrative tier. Every one is editable — overwrite them with your own.

Coverage & demand
<1 if some incidents are resolved remotely; >1 if repeat visits are common.
Descriptive only. The window does not drive any number here — no universal relationship exists between a response window and the capacity it requires.
The visit · incurred under any tier
min
h
/h
The promise · cost the tighter window ADDS
FTE
Estimate the capacity that must remain available to honour this tier across its territory. It depends on geography, operating hours, incident concurrency, skills and pooling — not on the window alone.
/mo
Standing cost of keeping that capacity available — reserved capacity is deliberately unproductive, so cost it on paid time, not productive time.
min
/mo
h/mo
/h
%
Pricing · per asset · month

Does the premium cover the cost the promise adds?

The incremental question decides the tier. The total-tier view is shown beneath it.

Incremental contribution of this SLA tier · month
—
—

Premium revenue minus only the costs the tighter promise creates. The visit is excluded — you would have made it anyway.

Incremental economics of the promise
SLA premium
Reserved standby capacity
Additional travel
Regional parts stock
Overtime
Breach penalties
Incremental contribution
Total tier economics
Contract revenue
SLA premium
Visits
Cost the promise adds (from above)
Cost-to-serve
Contribution (€, not a %)
Contribution margin (% of revenue)
Standby share of promise cost
—
the option, isolated
Cost per dispatch
—
Incremental contribution at stress
—
Cost per covered asset
—
/ month, all-in
Break-even premium per asset · month
—

Incremental contribution came out negative?

Send Paula the tier and the numbers you used. She’ll tell you which line to attack first and whether a slower tier would earn more — free, no pitch, no follow-up sequence.

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Want it settled on your real book, not defaults? SIGNAL reconstructs cost-to-serve by SLA tier, customer and asset — event by event. Six weeks, fixed fee.

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Illustrative model for structuring the decision, not a quote. Boundary: one SLA tier, one month, contribution before overheads. It treats reserved standby and regional parts stock as standing costs of the tier (fixed regardless of how often the window is exercised), and visits, additional travel, overtime and breach penalties as variable with dispatch volume. The response window does not determine reserved capacity — you must estimate that from your own geography, concurrency, skills and pooling. Calibrate every input before acting. All computation happens in your browser — nothing is sent or stored.