Value-based vs conversion-based bidding: which fits?
Value-based bidding wins when conversions differ meaningfully in worth and you have reliable value data. Conversion-based bidding fits when conversions are roughly equal or value data is unavailable. Match the method to your economics and data.
Conversion-based bidding, like Target CPA or Maximize Conversions, optimizes for the number of conversions, treating each as equal. Value-based bidding, like Target ROAS or Maximize Conversion Value, optimizes for total conversion value, treating conversions as worth different amounts. When your conversions genuinely differ in value, value-based wins, but it requires reliable value data to work.
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Get your auditBook a call| Dimension | Value-based bidding | Conversion-based bidding |
|---|---|---|
| Optimizes for | Total conversion value | Conversion count |
| Treats conversions as | Different worth | Equal |
| Best when | Values vary widely | Values roughly equal |
| Data requirement | Reliable value data | Conversion tracking |
| Fit for ecommerce | Strong | Weaker |
| Fit for uniform lead gen | If lead values differ | If leads are similar |
| Profit potential | Higher with margin in value | Lower |
| Risk if value data wrong | High | Lower |
- Your conversions differ meaningfully in value
- You sell products with varied prices or margins
- You can pass reliable, ideally profit-based, value data
- Some customers are worth far more than others
- You want bidding to chase value, not just volume
- Your conversions are roughly equal in worth
- You cannot pass reliable value data
- Leads or actions have similar value
- You want a simpler starting point
- You are early and value data is not yet trustworthy
Value-based bidding can unlock more profit than conversion-based when it optimizes to real value, especially if you pass profit rather than revenue, because it favours the conversions that actually pay the business. But it is only as good as the value data behind it, so wrong or missing values make it optimize to a distorted picture. Conversion-based bidding is safer when values are uncertain but leaves profit on the table when conversions genuinely differ. The right choice follows your economics and data reliability.
Many accounts start conversion-based and graduate to value-based as reliable value data becomes available. The migration should follow the data: move to value-based only when the values passed are trustworthy and, ideally, reflect profit. Moving to value-based on unreliable values automates optimization toward a distorted picture. Get the value data right first, then let bidding optimize to it.
Numbers on this page are illustrative benchmarks or model outputs, not guaranteed returns. Actual performance depends on your account history, offer, margin, and competitive set. Nothing here is financial advice or a warranty of results.
Disclosure. iClick has no product stake in bidding methods, so this comparison reflects only its operating experience. iClick's consistent position is that value-based bidding is powerful when the value data is honest, ideally profit-based, which is advice offered regardless of account.
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