Most agency reports open with good news. Impressions are up, clicks are up, cost per click is down, and a green arrow sits next to every number. None of it tells you whether the money you spent came back.
A monthly report should show whether an agency is earning its retainer. If yours reads like a highlight reel, someone made that choice. It can hide a soft month behind metrics that rise with spend.
This guide shows what the report should contain, so you can hold your agency accountable instead of nodding along to a green dashboard.
What should a monthly growth report show you?
Every monthly growth report should answer three questions: Did spend produce revenue or pipeline at an acceptable cost? What did we learn? What changes next month?
Everything else is supporting detail. A report that misses any question is only a status update. A good report takes a clear position and supports it with relevant numbers.
The three jobs of the report, in order:
- Prove the money worked. Tie spend to a business outcome, not to platform activity.
- Show what was learned. List the tests, the results, and the read on why.
- Commit to next moves. Name the specific changes going into next month.
If a section does not serve one of those three jobs, it is decoration. Ask for it to be cut or moved to an appendix.
Why do most agency reports feel good but tell you nothing?
Most weak reports lead with activity metrics. Impressions, reach, clicks, and click-through rate often rise with budget. They can make a losing account look healthy.
These are often called vanity metrics: numbers that go up and to the right without proving value. In the audits we run, reports that lean on reach and engagement often hide a rising cost per customer.
| Vanity metric | What it hides | Outcome metric to demand |
|---|---|---|
| Impressions and reach | Whether anyone bought | New customers or qualified pipeline |
| Click-through rate | Whether clicks convert | Cost per acquisition, blended |
| Platform ROAS | Sales that would have happened anyway | Incremental ROAS or MER |
| Cost per click | Cost per paying customer | CAC and payback period |
| Engagement and video views | Revenue | Contribution after ad spend |
None of the left-column numbers are useless. They help diagnose why a result happened. They do not belong at the top of the page, standing in for the result itself.
Which numbers belong at the top of the report?
The top of the report should show four numbers: spend, new customers or qualified pipeline, blended CAC, and payback period. Together they connect spend to business results. Put them above any channel breakdown, because a single channel can look efficient while the blended number climbs.
- Spend. Total media plus fees, so the full cost is visible.
- New customers or pipeline. The actual business result, not form fills or leads that never close.
- Blended CAC. Total spend divided by all new customers, across every channel. This is the number platform dashboards cannot inflate.
- Payback period. How long until a customer repays their acquisition cost. It decides whether you can scale spend safely.
MER divides total revenue by total ad spend, giving you a blended measure of efficiency. Common Thread Collective explains that MER avoids platform attribution disputes. The formula stays consistent through iOS and attribution-window changes.
Not sure your current report is telling you the truth? We read agency reports for a living. Bring yours to a free strategy call. We will identify which numbers matter and which are decoration.
How should AI-automated campaigns change what you measure?
Advantage+ and Performance Max report the conversions they claim credit for, so their ROAS grades their own work. A report that quotes only platform ROAS can overstate the result as more budget moves into automation. The platform can take credit for sales that would have happened anyway.
Anchor the report on blended CAC, then run a periodic incrementality test to see what the spend caused. As Common Thread Collective argues in its work on incrementality, a holdout tells you what would have sold anyway. A quarterly geo holdout or spend-off test shows whether the automated campaigns add sales.
If your report leans entirely on the in-platform ROAS that Advantage+ and PMax hand back, you are trusting the seller’s own scorecard. Ask how the agency validates that number against a blended or incremental read.
What should the report say about tests and next steps?
A growth report should list each test, its hypothesis, the result, and the specific change planned for next month. Recording each test shows what the team learned. Without next steps, each month adds activity instead of progress.
A strong report stands out because every section makes a claim you can act on.
| Report section | Weak version | Strong version |
|---|---|---|
| Results summary | "Great month, CTR up 12%" | "Spend $40k, 128 new customers, blended CAC $312, down from $355" |
| Tests | "Tested new creative" | "3 hook tests; pain-led beat proof-led by 22% on CPA; scaling the winner" |
| Next month | Missing | "Shift 15% of budget to the winning angle, launch 2 offers, retire the fatigued set" |
The strong column uses numbers, comparisons, and decisions. The weak column lists activity. Actionable reports show what should happen next month and define failure in advance.
How do you tell a diagnostic report from a status update?
A diagnostic report explains what happened, why it happened, and what the team will do next. A status update lists numbers and leaves you to judge the month.
Use these tells when you read next month’s report:
- It leads with a business outcome, not with reach or clicks.
- It states blended CAC, not only platform-reported ROAS.
- It says which tests lost, not just which ones won.
- It ends with a dated plan, not a summary of effort.
- You can tell in 90 seconds whether the month worked.
If the report fails most checks, the agency has not made results clear. That is a common sign it may be time to switch agencies. You may also need to renegotiate how the agency reports accountability.
Before you sign or renew, add report standards to your list of questions for any growth agency. Ask to see a real, anonymized monthly report from a current client. How they answer tells you whether reporting is a habit or an afterthought.
A monthly report should tell you whether the money worked and what changes next. Want a second read on yours? Book a Free Strategy Call and we will review your last report together.
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