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?
A monthly growth report should answer three questions in order: did the spend produce revenue or pipeline, and at what cost? What did we test and learn? What changes next month? Everything else is supporting context. If a report misses any of those questions, it is a status update.
A good report takes a position on how the month went and defends it with the numbers that matter.
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?
Because they lead with activity metrics. Impressions, reach, clicks, and click-through rate move with budget, not with results. They often rise when you spend more, so they measure effort, not outcome. A report built on them can look strong while the account quietly loses money.
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.
Marketing efficiency ratio, or MER, is the blended cousin of ROAS: total revenue divided by total ad spend. According to Common Thread Collective, MER matters because it sidesteps the attribution fights that make platform-reported numbers unreliable. Its calculation stays the same through iOS updates 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 tell you which numbers are load-bearing 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. That record shows what the team learned. Without a forward plan, each month becomes more activity instead of progress.
The difference between a weak and a strong report is not the volume of data. It is whether each 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" |
Notice the strong column names numbers, comparisons, and decisions. The weak column names activity. A report you can act on tells you what to expect next month and what would count as a miss.
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 of these, do not blame your reading. The report was built to look busy. That pattern is one of the clearer signs it may be time to switch agencies, or at least to renegotiate what accountability looks like.
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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