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Whether to lower the target depends entirely on when the campaign stopped spending. A campaign that strangled within about 24 hours of the target being added and one that drifted into it over weeks look identical in the interface, and the fixes are opposite — lowering the target is the wrong move in one of them.
On this page
- How do I tell whether my target ROAS is too high?
- Does offline conversion match rate change my effective target ROAS?
- Should I lower the target ROAS or remove it entirely?
- Is target ROAS a return target or a cost cap?
- How do I work out what target ROAS to set?
How do I tell whether my target ROAS is too high?
The target number alone tells you nothing. A target that looks terrifying can be perfectly fine.
| Pattern | Diagnosis | Action |
|---|---|---|
| Utilisation under 40%, high impression share lost to rank, spend declining | Strangled | Act decisively |
| Utilisation around 90–110% | Coping, whatever the target looks like | Leave it alone |
Sweeping a 20-account book campaign by campaign, only three campaigns were genuinely strangled. Everything else that looked over-tight was coping. Loosening a coping campaign risks overspending below your floor.
Does offline conversion match rate change my effective target ROAS?
This only applies when you are uploading offline conversions, and almost nobody accounts for it.
required real return = target ÷ match rate
Google only sees the bookings it can match back to a click. Measured across a 14-location home-services network, that share sat in a 0.56 to 0.83 band.
| Your target | Match rate | What you are really demanding |
|---|---|---|
| 5.0x | 0.60 | 8.3x |
| 5.0x | 0.70 | 7.1x |
| 5.0x | 0.85 | 5.9x |
| 5.0x | 1.00 | 5.0x |
An account genuinely doing 5x real will choke its spend to nothing with the budget untouched. The durable fix is the match rate, not the target.
Should I lower the target ROAS or remove it entirely?
Day one after adding a target to a previously uncapped campaign. It strangles within about 24 hours. Do not try to halve the target to recover — that was tried and rejected. Remove the target entirely, let the campaign find its footing uncapped, then re-add a target at a lower level only after utilisation recovers.
Drifted into a strangle over weeks. Un-strangle with one decisive move, not a 15% staircase. Stepping down keeps a dead campaign dead for months, because each small step is swamped by the pool it is measured against. Save 15% steps for fine-tuning a campaign that already works.
Is target ROAS a return target or a cost cap?
If your conversion values are static defaults rather than real revenue, then ROAS = value factor ÷ cost per acquisition, and a target ROAS is a cost cap, not a return target.
Which means: if somebody raises the value factor and leaves the target alone, you have silently loosened the permitted cost per acquisition in exact proportion, and nobody authorised it.
Measured case: a campaign held at target 5.0 while its value factor moved from 666 to 950. Permitted cost per booking went from $133 to $190 — a 42.6% loosening that appears in no report.
Across one book, value factors moved between 1.4x and 3.0x inside 12 weeks. Any efficiency statistic computed across more than one of those regimes is an artifact, not a statistic.
How do I work out what target ROAS to set?
- Pin the current value factor.
- Choose a target cost per acquisition from settled business data, not from the platform.
- Set target ROAS = factor divided by target cost.
One honest caveat: cost per acquisition is ruler-independent, but it is not more stable. Across that same book its coefficient of variation ran 0.17 to 0.82. Neither metric supports a point target from platform weekly data alone.
Related questions
Why is my Google Ads campaign not spending its budget?
Most often the target is above what the account can deliver, or the campaign is rank-locked by a bid ceiling. Diagnose on budget utilisation against impression share lost to rank, not on the target number itself.
How long should I wait after changing a target before judging the result?
Long enough for the data to settle and for the bidder to adjust, which are two different clocks. Never read a window containing days younger than 4 days old, and do not stack another change on top while you are waiting.
Does target ROAS work as a cost cap?
On accounts writing a static default conversion value, yes — ROAS reduces to the value factor divided by cost per acquisition, so the target functions as a cost cap rather than a return target. On accounts passing real order revenue it behaves as a return target.
What is budget utilisation and what is a healthy level?
The share of a campaign's daily budget actually spent. Around 90 to 110% means the campaign is coping with its target. Under 40% with high impression share lost to rank means it is strangled.
Why did my ROAS change when nothing in the campaign changed?
Check whether the conversion value written on each conversion moved. On a static-value account, a factor change moves reported efficiency with no change in performance at all. Value factors on one book moved between 1.4x and 3.0x within 12 weeks.
Written by Usama Khan, who runs Google Ads for e-commerce brands and home-services companies at AdventurAds. Figures are from accounts under active management and are anonymised. Last reviewed 2026-08-26.
