About bid adjustments

30/11/2019

Bid adjustments allow you to show your ads more or less frequently based on where, when, and how people search. For example, sometimes a click is worth more to you if it comes from a smartphone, at a certain time of day, or from a specific location.

In this article, you’ll learn about the different types of bid adjustments and their requirements, how multiple adjustments interact, and what options are available for different types of campaigns.

If you’re looking for instructions on how to set bid adjustments, read how to add or remove a bid adjustment.

How bid adjustments work

Bid adjustments are set by percentages.

Say you've got a campaign that performs well on mobile devices with a max CPC bid of US$1. To show your ad to more customers on mobile devices, you increase your bid by 20% for searches on mobile devices, resulting in a final bid amount of US$1.20. Here's the math:

Starting bid: $1
Mobile adjustment: $1 + ($1 x 20%) = $1.20
Resulting bid for searches on mobile devices: $1.20

In another example, let’s say you have a US$1 bid and would like to decrease it. To adjust it to US$0.80, select Decrease by 20%.

Types of bid adjustments

Device

Use device bid adjustments to show your ad more or less frequently for searches that occur on specific devices: computers, tablets, or mobile devices.

Where you can use them

Campaigns
Ad groups
If you’ve set a device bid adjustment for a campaign and an ad group within that campaign, the ad group bid adjustment will be used to determine your bid.

Range

-100% to +900%
To opt out of showing ads on a certain device, decrease your bid by 100% for that device. If you’ve decreased a campaign’s bid by 100% for a particular device, then the ad group-level adjustment for the same device won’t be used.

Guide me: Set a device bid adjustment

Click the "Guide me" button below to go to your account and be guided through setting a bid adjustment for mobile devices. Or, you can read how to add or remove a bid adjustment.
Guide me

Location

Use location bid adjustments to show your ad more or less frequently to customers in certain countries, cities, or other geographic areas. You can also use location extension targeting to set different bids for customers who are located around your business.

Where you can use them

Campaigns

Range

-90% to +900%

Ad scheduling

Use ad scheduling bid adjustments to increase or decrease your bids for campaigns that show only on certain days or during certain hours. To do this, you’ll first need to set up a custom ad schedule.

Where you can use them

Campaigns

Range

-90% to +900%

Where you can use them

Ad groups

Range

0% to +500%

Targeting methods (advanced)

Set bid adjustments for topics, placements, and other targeting methods in campaign types that show ads on the Display Network. Learn how to add audiences (interests and remarketing lists) to an ad group.

Where you can use them

Ad groups

Range

-90% to +900%

Remarketing lists for search ads (advanced)

You can set bid adjustments for remarketing lists in your ad groups if you’d like to show ads to people on these lists. For example, you could increase your bid by 25% for those who previously viewed your website in the last 30 days. If you don’t yet have a remarketing list set up, read about Google Ads remarketing lists for search ads.

Where you can use them

Campaigns
Ad groups

Range

-90% to +900%

Interactions (call adjustments)

You can increase your bid for mobile devices to show call interaction ads more frequently for mobile phone users. Interaction bid adjustments influence how often you show call extensions and call-only ads to users. The flexibility of adjusting your bids for certain interactions gives you more control over how often they appear with your ad and how potential customers connect with your business.

Where you can use them

Campaigns in the new Google Ads experience

Range

-90% to +900%

Demographics (age, gender & household income)

You can adjust your bid to target potential customers of either gender and/or in certain ranges of age and incomes. Demographic bid adjustments determine how often your ads show to the preferred audience to make the most of each impression. Learn more About demographic targeting.

Where you can use them

Campaigns and ad groups in the new Google Ads experience

Range

-90% to +900%

Bid adjustment eligibility

_{Campaign type}	_Device	_Location	_{Ad scheduling}	_{Top content (Display Network, YouTube)}	_{Targeting method}	_{Remarketing lists for search ads (Search Network)}	_{Interactions (call adjustments)}	_Demographics
_{Search Network Campaign}	_Yes	_Yes	_Yes	_No	_Yes	_Yes	_Yes	_Yes
_{Display Network Campaign}	_Yes	_Yes	_Yes	_Yes	_Yes	_No	_N/A	_Yes
_{Shopping Campaign}	_Yes	_Yes	_Yes	_No	_No	_Yes	_N/A	_No
_{Video Campaign}	_Yes	_Yes	_Yes	_Yes	_No	_No	_N/A	_Yes
_{Universal App Campaign}	_N/A	_N/A	_N/A	_N/A	_N/A	_N/A	_N/A	_N/A
_{Smart Campaign}	_N/A	_N/A	_N/A	_N/A	_N/A	_N/A	_N/A	_N/A

With Smart Campaigns and Universal App Campaigns, Google's machine learning automatically adjusts bids seamlessly to maximize performance based on your advertising goals.

Automated bidding

If your campaign is using an automated bid strategy other than Maximize Clicks, it's not possible to set ad scheduling bid adjustments.
For Target CPA, device bid adjustments change your CPA target, rather than your bid.
For Target ROAS, the only device bid adjustment that can be used is -100%.

Multiple bid adjustments

When you set more than one bid adjustment in your campaign, those adjustments are typically multiplied together to determine how much your bid will increase or decrease. However, multiple device and location bid adjustments behave differently.

Keep in mind that combined bid adjustments cannot exceed a 900% bid increase. For example, a $1 bid with a device increase of 900% combined with a location increase of 900% will result in a bid of only $10. The lowest possible bid adjustment when combining multiple bid adjustments is -90%.

Multiple device bid adjustments

If you set a device bid adjustment at the campaign level and an adjustment for the same device at the ad group level, the ad group device bid adjustment will be used to determine the resulting bid adjustment. However, if the campaign-level device bid adjustment is a 100% decrease, then the ad group level device bid adjustment won't be used.

Multiple location bid adjustments

Multiple adjustments that apply to the same location won't be combined. If you set an adjustment of +50% for France, and +100% for Paris, only the adjustment for Paris, the most specific location, will be used for traffic from users in Paris.

Multiple Display Network content bid adjustments

For Display campaigns, you can set a bid adjustments at the ad group level on a specific targeting method in the Display tab, as well as on Top content in the Settings tab. This means that when your ad is eligible to appear on a specific placement that also qualifies as top content, Google Ads could use two bid adjustments. One bid adjustment could be based on a specific targeting method, such as topic, and the second could be set for top content. Learn more about Display Network bidding

Example

Say you're running a campaign that targets the U.S. and is scheduled to run all days of the week. And, you've set an ad group max CPC bid of US$1. You decide to increase your bid by 20% for California, and decrease your bid by 50% for Saturday. Your resulting bid for a search that occurs in California on a Saturday will be US$0.60. Here's the math:

Starting bid: $1
California adjustment: $1 + ($1 x 20%) = $1.20
Saturday adjustment: $1.20 + ($1.20 x -50%) = $0.60
Resulting bid for searches in California on Saturday: $0.60
Resulting bid for searches in California on Sunday through Friday: $1.20
Resulting bid for searches in other states on Saturday: $0.50
Resulting bid for searches in other states on Sunday through Friday: $1.00

Tip

Use our calculator to help determine your resulting bid adjustment. In All campaigns, under Settings, on the All settings subtab, look for the calculator icon in the "Active bid adjustments" column. (You may have to add the column first). You can also find the calculator in the settings summary at the top of individual campaign pages.

* Nguồn: Google