Our retargeting campaign tanked after we cut the budget by 40%

Back in March we decided to trim our retargeting spend from $8,000 a month down to $4,800 to free up cash for a new product launch. Within two weeks our cost per click jumped from $0.85 to $1.60 and the click through rate dropped by half. The worst part was that our return on ad spend fell from 3.2 down to 1.1, and we were burning money just to keep our brand in front of people who already knew us. I figured the algorithm would self-correct, but after three weeks of flat results I turned the budget back up and it took another ten days to recover. What I learned is that retargeting has a floor, and going below it just lets your competitors swoop in on your warm audience. Has anyone else seen this same cliff effect when cutting retargeting spend, and did you find a smarter way to scale back without losing the whole funnel?

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rileynelson12d ago

That "algorithm would self-correct" line hit home. I've watched the same thing happen, and it's brutal because the platform just stops feeding your ads to the people who matter once the budget dips below what it thinks is a daily minimum. The thing is, your warm audience isn't loyal to you, they're just sitting there waiting for whoever shows up first with the best offer. What worked for me was cutting by channel instead of by percentage. Kill the low-performing placements entirely and keep the budget steady on your top 20% of audiences, even if that means a smaller reach. That way you don't shock the system into resetting your whole learning phase.