Google Ads Bid Adjustments: Device, Location, and Schedule (2026)

Google Ads bid adjustments are percentage modifiers you set at the campaign or ad-group level to raise or lower bids for specific devices, locations, audiences, ad schedules, and demographics. They let you shift spend toward the segments that convert best, and they work alongside automated bidding as signals rather than replacing your bidding strategy.

What Are Google Ads Bid Adjustments?

A bid adjustment is a multiplier applied to your base bid for a defined segment. Set a +20% adjustment for mobile and Google raises the effective bid by 20% whenever a mobile user triggers an auction; set -20% and it bids lower. The usable range runs from a 90% decrease (the floor, which still allows the segment to serve) up to a 900% increase. You cannot fully stop a segment with a bid adjustment alone, which is why exclusions exist separately for locations and placements.

Bid adjustments are most powerful as a precision tool. Instead of rebuilding campaigns around one device or region, you keep one campaign and nudge the bid so the auction math favors your best-performing segments. For the broader decision of which bidding strategy to run, see our Google Ads bidding strategies guide.

How Do Bid Adjustments Work with Smart Bidding?

With manual CPC, a bid adjustment directly changes the auction bid. With automated strategies such as Target CPA, Target ROAS, or Maximize Conversions, the adjustment does not override the algorithm; it acts as an observation signal that tells the system where you value conversions more or less. That means a +30% mobile adjustment in a Target ROAS campaign tells Google to pursue mobile conversions more aggressively, but the final bid still comes from the optimizer.

This is the single most misunderstood point: in smart bidding, bid adjustments are levers, not hard rules. If you need a strict cut, prefer campaign-level device or location exclusions, or use a separate campaign, rather than assuming a -90% adjustment silently stops delivery.

Device Bid Adjustments

Device adjustments let you bid differently for mobile, desktop, and tablet. A common pattern is a modest desktop increase and a mobile decrease for lead-gen campaigns where desktop converts better, or the reverse for simple mobile-purchase flows. Base the number on actual device-level conversion rate and CPA from the segmented report, not on a hunch about "mobile users."

Location Bid Adjustments

Location adjustments raise or lower bids by geography, from country down to ZIP code. Use them when conversion value differs by region: a +40% adjustment for your top metro and a -30% for a low-performing state. Watch the targeting setting: "targeting" restricts delivery to the location, while "observation" reports without restricting, so you can test an adjustment before committing. Pair this with disciplined ad pacing so the higher bids do not exhaust budget early in the day.

Ad Schedule (Dayparting) Bid Adjustments

Ad schedule adjustments change bids by day of week or hour. A restaurant or local service business might add +50% on weekday lunch peaks and -40% overnight; a B2B advertiser might lift bids during business hours and pull back on weekends. This is the same lever discussed in our dayparting advertising guide. Keep the schedule aligned with when conversions actually happen in your account data, not with when you assume people shop.

Audience Bid Adjustments

Audience adjustments apply to observation lists such as remarketing, in-market, or custom segments. In manual bidding they raise the bid when a member of the list enters the auction; in smart bidding they tell the optimizer those users are more valuable. Use them to bid up past purchasers or high-intent in-market segments, and to bid down cold broad audiences while you gather data. Avoid stacking large adjustments on overlapping lists, which compounds unpredictably.

Demographic and Other Bid Adjustments

Age, gender, and household-income adjustments work the same way: a percentage shift for a defined segment. They are useful when a product clearly suits one demographic, but apply them cautiously because small audiences can produce noisy signals. Treat any demographic cut below a meaningful conversion volume as a test, not a permanent setting.

Google Ads Bid Adjustments Best Practices

  • Set adjustments from segmented performance data, never from assumptions about a device or region.
  • In smart bidding, treat adjustments as signals and validate with the bid-simulator or an experiment before large changes.
  • Use exclusions, not -90% adjustments, when you truly want to stop a location or placement.
  • Avoid stacking many large overlapping adjustments; the compounded effect becomes hard to read.
  • Change one variable at a time and wait for enough conversions to judge the result.
  • Revisit quarterly; an adjustment that helped at low volume can hurt once the campaign scales.

Bid Adjustments vs Bid Strategies

The choice is not either-or. Your bidding strategy decides how the base bid is set; bid adjustments refine where that bid applies more or less aggressively. Manual CPC plus careful adjustments gives hands-on control but demands constant attention. Smart bidding and value-based bidding take over the base bid and use your adjustments as input. Most mature accounts run automated bidding with a small set of deliberate, data-backed adjustments rather than micromanaging every segment by hand.

How Do You Measure Bid Adjustment Performance?

Use the segmentation controls to break any report by device, location, ad schedule, or audience, then compare conversion rate and cost per conversion against the campaign average. Before committing an adjustment, check that the segment has enough conversions to be statistically meaningful. For larger changes, run a campaign experiment or draft so the adjustment is judged against a holdout instead of against seasonality you cannot separate from the tweak.

Frequently Asked Questions

What Are Google Ads Bid Adjustments?

Google Ads bid adjustments are percentage modifiers you apply at the campaign or ad-group level to raise or lower bids for a specific device, location, audience, ad schedule, or demographic. They range from a 90% decrease to a 900% increase and shift spend toward your best-performing segments.

Do Bid Adjustments Work with Smart Bidding?

Yes, but as signals rather than hard rules. In manual CPC an adjustment directly changes the bid, while in Target CPA, Target ROAS, or Maximize Conversions it tells the optimizer where conversions are more or less valuable. The final bid still comes from the automated strategy, so validate large adjustments with an experiment.

What Is the Range of a Google Ads Bid Adjustment?

A bid adjustment can decrease a bid by up to 90 percent or increase it by up to 900 percent. A -90% adjustment is the floor and still allows the segment to serve; to fully stop a location or placement, use an exclusion instead.

How Do Device Bid Adjustments Work?

Device bid adjustments change the effective bid for mobile, desktop, or tablet users. Set them from the segmented device report using real conversion rate and cost-per-conversion, not from assumptions, and remember they compound with any location, audience, or schedule adjustments you also apply.

When Should You Use Bid Adjustments Instead of a Separate Campaign?

Use bid adjustments for modest, data-backed shifts within one campaign, such as a regional or time-of-day lift. Use a separate campaign when the difference is structural: a distinct landing page, budget, or strict stop on a segment that a -90% adjustment cannot fully enforce.