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Google Ads budget review: build the case from read-only reports
A budget review should explain where money went and which uncertainty matters next. Start with campaign purpose and comparable outcomes, then separate established patterns from recent immature data. A high cost ratio can justify an investigation, but it does not reveal what adding or removing spend would do.
By Adlane · Updated
Start the Google Ads budget review with purpose, not the blended average
List each campaign with the business objective it serves: new customer orders, enquiries from a particular segment, brand defence, or a test. A campaign that exists to reach larger accounts should not be judged by the same cost per lead as one that fills a self-service funnel. The blended account average hides exactly this distinction.
Confirm that the figures are comparable before comparing them. Check the account currency, the conversion actions counted in each campaign, and whether any campaign counts a softer action such as a page view. Use the same complete dates and the account timezone throughout.
A worksheet for spend, outcomes and the uncertainty that matters
Fill one row per campaign. Blank cells are findings in their own right: a campaign whose outcome cannot be stated is not ready for a budget decision.
| Review field | What to record | Question it answers |
|---|---|---|
| Objective and audience | Who the campaign is for and what counts as success | Is the comparison fair? |
| Spend and budget status | Spend, average daily budget, days limited by budget | Where did the money go? |
| Mature outcomes | Conversions and value from complete periods only | What has it delivered so far? |
| Measurement quality | Conversion action, recent tag changes, import delays | Can the outcome be trusted? |
| Open uncertainty | Lead quality, lag, seasonality, recent changes | What would change this view? |
Illustrative example: the expensive lead that targets larger accounts
Illustrative example: two campaigns report over eight complete weeks. Campaign A spends an invented 4,000 and records 80 leads at 50 each. Campaign B spends 3,000 and records 20 leads at 150 each. A spreadsheet that optimises the blended cost per lead moves budget from B to A.
Campaign B targets enterprise terms, and the sales team reports that its leads become larger contracts. Without downstream quality evidence the review cannot say which campaign is more valuable, only which is cheaper per form. The honest finding is a request for closed-deal data, not a budget transfer.
Average cost is not marginal cost
Historical average performance describes the spend already made. It is not a forecast of what the next unit of spend would return. Auction prices rise as a campaign reaches for more volume, audiences saturate, and a campaign that was limited by budget behaves differently once the limit is lifted. A spreadsheet reallocation cannot see any of this.
Budget mechanics also matter. Google documents that daily spend can exceed the average daily budget on some days while a monthly limit applies, so a single day over budget is not a fault. Read the current guidance before interpreting a “limited by budget” status as a simple instruction to add money.
Write each proposal as a hypothesis with its contradicting evidence
For every suggested adjustment, write what you expect to happen, by when, and what evidence would show the hypothesis was wrong. “Raise Campaign A by 20 percent; expect cost per lead to stay within 10 percent of its current level over four complete weeks; stop if it rises beyond that” is a reviewable proposal. “Increase A” is not.
Include the alternatives that are not budget changes. A tracking fix, a landing page repair or a negative keyword review may address the symptom more directly and at lower risk. Present the options with their assumptions and measurement plan so the person approving can weigh them.
Prepare the budget review in Adlane
Connect the Google Ads account and ask for the review with its dates and goal stated, for example: “Summarise spend, conversions and budget status by campaign for the last eight complete weeks, using the Qualified enquiry action, and flag the newest two weeks as provisional.” Review the evidence returned against the worksheet above before drawing any conclusion.
A report is not permission to change budgets. If the review supports an adjustment, Adlane prepares it as a proposal that shows the current budget, the proposed value and the reasoning, and only your approval applies it. New campaigns start paused. Record the approved change and its review date so the next budget review starts from evidence rather than from memory.