SLA Service Credit Estimator
Use the actual measurement window and the credit rate stated by the applicable service agreement. The tool does not assume any vendor’s specific SLA policy.
How to use this calculator
- Enter the monthly service fee using the units shown beside the field.
- Enter the measured downtime minutes using the units shown beside the field.
- Enter the total minutes in measurement period using the units shown beside the field.
- Review the calculated values and check that the assumptions match your scenario.
- Change one input at a time when comparing scenarios so you can see which assumption drives the result.
Formula and assumptions
Availability = 1 − downtime / period; estimated credit = monthly fee × entered credit rate only if availability is below commitment.
- SLA contracts can exclude maintenance, third-party outages or specific causes. This estimate cannot determine contractual entitlement; read the actual agreement.
- The result is computed from the values you provide; it does not fetch external rates, live account data or local rules.
Worked examples
Worked example
A 2,400 monthly fee with 180 downtime minutes across 43,200 minutes has about 99.583% availability; if a stated 99.9% commitment is breached and the contract credit is 10%, estimated credit is 240.
Example inputs: Monthly service fee = 2400, Measured downtime minutes = 180, Total minutes in measurement period = 43200, Availability commitment (%) = 99.9.
Compare the displayed output with your own measurements before using it in a decision.
Understanding the result
SLA contracts can exclude maintenance, third-party outages or specific causes. This estimate cannot determine contractual entitlement; read the actual agreement.
Results are estimates based on the stated model. If the situation depends on measured conditions or contractual specifications, use those source values rather than typical assumptions.
Important notes
SLA contracts can exclude maintenance, third-party outages or specific causes. This estimate cannot determine contractual entitlement; read the actual agreement.
Frequently asked questions
What formula does this calculator use?
It uses the method described above: Availability = 1 − downtime / period; estimated credit = monthly fee × entered credit rate only if availability is below commitment.
What should I verify before relying on the result?
SLA contracts can exclude maintenance, third-party outages or specific causes. This estimate cannot determine contractual entitlement; read the actual agreement.
Can I compare different scenarios?
Yes. Change the inputs while keeping units and definitions consistent, and record the assumptions used for each scenario.
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This page provides a calculation tool plus explanatory information so you can understand what the result means and when the underlying method may not fit your situation.