There is no universal spend number
A campaign selling a £20 product and a campaign generating £10,000 commercial contracts cannot use the same threshold. The amount of spend required depends on the expected cost per result, conversion rate, sales cycle and business risk.
Start with the intended purpose
A campaign optimised for awareness should not be judged only by immediate purchases. A sales campaign spending heavily without a tracked sale deserves a different conversation. The objective and optimisation goal must be visible before comparing performance.
Look for enough evidence relative to the target
If the acceptable acquisition cost is £50 and a campaign has spent £12, there is probably too little evidence. If it has spent £500 without a purchase, the position is different. AdSpend Lens should make thresholds configurable and explain them.
Consider the quality of the tracking
Turning off a campaign because the platform reports no sales is risky if purchase tracking is broken. Before making a strong recommendation, check whether the conversion action works, values are present and the connection is current.
Watch the direction, not only the total
A previously strong advert may become less effective as the audience sees it repeatedly. Rising frequency combined with falling click-through rate and return can support an advert-fatigue question. A single bad day normally cannot.
Reasons to investigate now
- Spend substantially exceeds the acceptable cost per result without a tracked outcome.
- Performance remains below target across a meaningful period and volume.
- Search terms are clearly unrelated to the business.
- Tracking settings or optimisation goals do not match the intended outcome.
- Performance declined while budget continued to concentrate in the same activity.
Reasons not to panic yet
- The campaign is new and has very low spend.
- Only one or two conversions are available.
- The normal sales cycle is longer than the selected date range.
- A promotion, stock issue or website problem affected the period.
- The campaign is designed for a different stage of the customer journey.
The best agency question
“What amount of spend, number of conversions or date will give us enough evidence to judge this campaign, and what decision will we make at that point?”