> [!CAUTION]
> **Caution:** This documentation is for Google Ads API **v24** . The latest active version is [**v26**](https://developers.google.com/google-ads/api/reference/rpc/latest/TargetCpa).

An automated bid strategy that sets bids to help get as many conversions as possible at the target cost-per-acquisition (CPA) you set.

[Proto definition ![GitHub](https://developers.google.com/site-assets/logo-github.svg)](https://github.com/googleapis/googleapis/blob/master/google/ads/googleads/v24/common/bidding.proto)

| Fields ||
|---|---|
| ## `cpc_bid_ceiling_micros` | `int64` Maximum bid limit that can be set by the bid strategy. The limit applies to all keywords managed by the strategy. This should only be set for portfolio bid strategies. |
| ## `cpc_bid_floor_micros` | `int64` Minimum bid limit that can be set by the bid strategy. The limit applies to all keywords managed by the strategy. This should only be set for portfolio bid strategies. |
| ## `target_cpa_micros` | `int64` Average CPA target. This target should be greater than or equal to minimum billable unit based on the currency for the account. |