Skip to content
Optizads

Bid adjustment

A percentage that raises or lowers bids for a device, location, schedule or audience. Smart Bidding sets its own bid per auction and ignores most of them, with two exceptions: a device set to −100%, and on Target CPA a device adjustment, which changes that device's target.

By the Optizads team

On this page
  1. Why it matters
  2. Where to find it in Google Ads
  3. An example
  4. Common mistakes
  5. Checks that look at it
  6. Related terms

Why it matters

On manual and some automated strategies, adjustments let one campaign pay more where results are better and less where they are worse, without splitting the campaign.

With Smart Bidding most of them stop working, because Google sets each bid from many signals at once. Two still apply: a minus 100% device adjustment, which excludes the device, and on Target CPA a device adjustment, which changes the target for that device.

Where to find it in Google Ads

  1. Open a campaign and look at Devices, Locations, Ad schedule or Audiences.
  2. The Bid adj. column shows the percentage on each line.
  3. Check the campaign's bid strategy to know whether adjustments apply.
  4. Segment results by the same dimension to see whether an adjustment is justified.

An example

On manual CPC, desktop costs twice as much per conversion as mobile in one campaign. A minus 20% desktop adjustment lowers those bids, and the gap is checked again a month later.

Common mistakes

  • Setting adjustments on a Smart Bidding campaign and expecting them to work.
  • Stacking several large adjustments that multiply into extreme bids.
  • Adjusting on a handful of conversions.

Checks that look at it

  • Bid: The most you are willing to pay for a click, or the target a Smart Bidding strategy aims at.
  • Smart Bidding: Google's automated bid strategies that set a bid for each auction toward conversions or conversion value.
  • Ad schedule: The days and hours a campaign may show.

Questions, answered.

Anything else? Ask Oppy in the product, or write to the team.

Do bid adjustments work with Target CPA?

Device adjustments do, as a change to the target: plus 40% on mobile turns a €10 target into €14 there. Location, schedule and audience adjustments are ignored, and so are most adjustments on Target ROAS and the Maximize strategies, except a minus 100% device exclusion.

How large should a bid adjustment be?

Start small, around 10 to 20%, sized from the real gap in cost per conversion, and check the result before going further.

Put Oppy to work on your account.

Create your account and connect Google Ads. Your first audit arrives in minutes, your first tasks soon after. 14 days free, no card.

  • Every change logged in History
  • Hosted in the EU
  • Any account size