SLA Reporting: What to Measure and Show

A service level agreement only helps you if you can show that you meet it. Most service providers have SLA targets in their contracts, but the evidence lives somewhere else — in a ticket system, in emails, in someone's memory. When a client asks how you performed, the answer is assembled by hand.

SLA reporting turns that evidence into a regular, honest summary. It proves reliability when things go well, and it shows you problems before the client raises them. This guide covers what to measure, how to calculate it, and how to present it.

The SLA metrics that matter

Keep the list short. These cover almost every service contract:

First response time: how long until a request or incident received its first meaningful response.
Resolution time: how long until it was solved.
SLA attainment: the share of requests that met their target — the single most useful number.
Breaches: every request that missed its target, with the reason.
Volume by priority: how many requests there were at each priority level, to explain the workload.

How to calculate SLA attainment

SLA attainment is the number of requests that met their target divided by all requests in the period, multiplied by 100. Calculate it separately for response and for resolution, and per priority level.

Do not report averages alone. An average resolution time can look fine while several urgent incidents took far too long. Attainment and a list of breaches show what an average hides.

Example

40 high-priority incidents in the month, 37 resolved within the target
Resolution attainment: 37 ÷ 40 × 100 = 92.5%
3 breaches, each listed with cause and corrective action

Define targets per priority — and when the clock runs

Targets only work if everyone measures them the same way. Write down, per client or contract tier:

Priority levels and what qualifies for each — for example, "urgent" means the client cannot work at all.
Response and resolution targets per priority.
Whether the clock runs 24/7 or only during business hours, and in which time zone.
When the clock pauses — for example while you wait for information from the client.

Example targets — adapt them to your contracts and team size

Urgent (client cannot work): first response 30 minutes, resolution 4 hours
High (important function impaired): first response 1 hour, resolution 1 business day
Normal (single user or workaround available): first response 4 business hours, resolution 3 business days
Low (question or small change): first response 1 business day, resolution 10 business days

SLA policy template →

How to present SLA results to clients

Start with one line: the attainment for the period and whether it met the contract.
Show the trend over the last three to six months, not just the current month.
List every breach with the cause and what you changed so it does not happen again.
Explain unusual volume — a spike in requests often explains a dip in attainment.
Keep it to one page. Detail can go in an appendix for clients who want it.

Reporting misses honestly is what makes the rest of the report believable. Clients usually remember the outage anyway; a clear explanation and a fix turn it into evidence that you are in control.

A simple monthly SLA reporting process

Attach a policy to every client. Each client gets the SLA policy that matches their contract.
Record everything with timestamps. Requests and incidents need a created, first-response and resolved time, in one system.
Watch warnings weekly. Review requests that are close to their target, not only the ones that already missed it.
Report monthly. Include SLA results in the regular client report, with the breaches explained.
Review quarterly. Check whether targets still fit the contract and the team's capacity.

Common mistakes

Measuring differently from the contract, for example 24/7 when the contract says business hours.
Reporting averages only, which hide the incidents clients care about most.
Tracking SLAs in a spreadsheet that someone updates by hand at the end of the month.
Reporting only when the client asks — by then the conversation is already about a problem.

Frequently asked questions

What is SLA reporting?

SLA reporting is the regular summary of how a service provider performed against the service levels agreed with a client — usually response and resolution times, attainment against targets, and an explanation of every breach.

What is the difference between an SLA, an SLO and a KPI?

An SLA is the agreement with the client, including targets and consequences. An SLO is an individual target inside it, such as resolving urgent incidents within four hours. A KPI is any metric you track internally, whether or not it is promised to a client.

How often should SLA reports be sent?

Monthly, as part of the regular client report, with a quarterly look at trends. Urgent breaches should be communicated when they happen, not only in the next report.

What should I do when an SLA is missed?

Tell the client early, explain the cause, describe what you changed to prevent it, and apply any agreed service credits without being asked. List the breach in the next report as well.

SLA reporting: what to measure and how to show it to clients