Per-Bidder Price Floors Are Back in Google Ad Manager: How to Use Them   

Per-bidder price floors let a publisher set a different minimum price for individual programmatic buyers inside Google Ad Manager's pricing rules, instead of one floor for everyone. For example, you can set a higher floor for Google's own demand and a lower one for an independent exchange or SSP.

For about six years, publishers couldn't do that. Here's why it was taken away, what changed, and how to use it without hurting your revenue.

Why were Per-Bidder Price Floors removed in 2019?   

Before 2019, publishers often set higher floors for Google's demand to offset its data advantage. In March 2019, Google moved Ad Manager to a unified first-price auction, and in May it introduced Unified Pricing Rules (UPR). UPR applied one minimum price across all non-guaranteed demand, so a publisher couldn't ask AdX for more than a rival exchange.

In April 2025, Judge Leonie Brinkema ruled that Google had unlawfully monopolized parts of the ad tech market, and listed UPR among the practices that disadvantaged competitors.

What changed, and when?   

• December 2025. Google removed Unified Pricing Rules, renamed them "pricing rules," and added bidder-specific floors

• September 2, 2026. In her remedies ruling, Judge Brinkema declined to order a sale of AdX. She accepted behavioral remedies instead, including deprecating UPR so publishers can set different floors for individual bidders

So the court order didn't create this feature. Google had already shipped it, and the ruling now makes the change mandatory and keeps the old model from coming back. Rollout timing may differ by region, so check your own account.

How to set a per-bidder floor   

1. Open Inventory, then Pricing rules, and create a new rule

2. Choose Set pricing for specific items

3. Under Demand sources, select Apply to specific bidders

4. Pick your bidders, listed under Authorized Buyers or Open Bidding

5. Set the floor and save

Three things to know before you set one   

1. Floors apply after Google's revenue share. Google's own example: with an 80/20 split, a $1.00 bid is worth $0.80 to you, so any floor above $0.80 filters it out. Set floors against what you'd actually net, not the gross bid.

2. Buyers don't see every floor. The floor sent in the bid request is the level below which Google can guarantee a bid will be filtered, and floors for specific items aren't included. In practice, a higher bidder-specific floor can apply without the buyer seeing it, so check your own bid logs to confirm how it behaves.

3. Overlapping rules resolve to the higher price. If several rules match the same impression, the higher applicable floor wins. Keep your rule set simple, since a tangle of overlapping rules gets hard to audit. Google caps pricing rules at 200 per network.

Should you set floors by hand or automatically?   

Google's machine-learning floor optimization is still in beta, and its help page says it works only under "Set pricing for everything." It isn't supported on "Set pricing for specific items," where per-bidder rules live, and it won't override bidder-specific floors. So within GAM, per-bidder floors are a manual, rule-based setting.

 A practical way to run them: 

• Start with a small gap between bidders, not a dramatic one

• Change floors gradually and give each change time to show results

• Measure revenue and fill rate, not just CPM, since a higher floor that lowers fill can cost you more than it earns

• Review bidder by bidder, because each demand source responds differently

The risk: floors set too high   

Google's own guidance warns that a floor that's too high can leave impressions unfilled, and one that's too low lets buyers bid less and still win. A higher floor on Google's demand only helps if other buyers are actually there to fill the impression. If they aren't, you can lose revenue instead of gaining it.

What this doesn't change   

The court declined to break up Google's ad tech business. Google still runs both the dominant ad server and AdX. Per-bidder floors are a useful lever, not a reset of the whole auction.

That's also why competing demand matters. Floors only create leverage when several buyers genuinely want your impressions. If you want to see how your demand mix looks, start with our guide on header bidding for publishers, or talk to MagicBid's web monetization team.

 FAQ   

1. What are per-bidder price floors in Google Ad Manager?

A pricing rule setting that lets publishers set different minimum prices for individual programmatic bidders, instead of one floor for all demand.

2. What were Unified Pricing Rules?

Google's 2019 floor system that applied a single minimum price across all non-guaranteed demand. Google removed it in December 2025, and the court has since ordered it deprecated.

3. Do price floors apply before or after Google's revenue share?

After. Floors are measured against the amount that would be paid to the publisher once Google's share is removed.

4. Can buyers see my per-bidder floors?

Not fully. The floor shared in the bid request is the level below which a bid is guaranteed to be filtered, and floors for specific items aren't included.

5. Can Google's automatic floor optimization work with per-bidder floors?

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