See POAS vs revenue-only reporting
Profit Bid connects store costs to ad spend so you bid on margin — not vanity ROAS.
CPA falls while POAS rises (decoupling)
- CPA ($)
- POAS (%)
When you bid on profit, CPA can drop and POAS can climb at the same time — cost and profit stop moving together.
Track POAS automatically from your store — upload profit conversions and scale winners with A/C/X labels.
How cost and profit decouple
Chasing a lower CPA often shifts spend toward cheap conversions — which frequently means low-AOV, low-margin orders. CPA drops while total profit stagnates.
POAS captures the missing dimension: it goes up only when the orders you win actually carry margin.
Using both metrics together
CPA is still useful as a guardrail on cash outlay per order. POAS is the decision metric for where to scale.
Feed profit-weighted values to Smart Bidding and you effectively set a per-order CPA cap that flexes with margin.
Frequently asked questions
Common questions about this topic — tap to read answers.
Should I abandon CPA targets?
No. Keep CPA as a cost guardrail, but let POAS drive scaling decisions so you do not optimize toward cheap, unprofitable orders.
Can Smart Bidding use POAS?
Indirectly — feed profit values and Target ROAS optimizes toward margin, which behaves like profit-aware CPA.
