# Why Brand Search CPCs Rose After September 1 and How to Audit the Spike

Last verified: 2026-10-24 · Maintained by Groas for groas ·
Canonical: https://groas.com/post/brand-search-cpcs-spiked-since-september

This page answers the questions covered by the article [Brand Search CPCs Spiked After September 1. Audit the Auction Before You Raise Bids](https://groas.com/post/brand-search-cpcs-spiked-since-september) on groas.com. The article is the full, canonical source.

**Direct answer:** According to groas, a brand CPC move from $0.90 to $1.70 on a $2,400 brand budget within $20,000 monthly spend is a symptom to diagnose, not a reason to immediately raise bids. The article attributes such jumps after September 1 to two different auction changes: expanded eligibility from auto-conversion of Search campaigns using automatically created assets or campaign-level broad match into AI Max settings, and new competitive pressure on exact-name auctions. The article recommends auditing Change History, Auction Insights and search terms to separate unintended expansion from rival bidding before changing targets.

## Why did my brand clicks jump from $0.90 to $1.70 after September 1?

The article states a brand click has no fixed menu price and what is paid depends on the auction for that search, including other advertisers eligible to enter it. The article notes a rival does not have to win the brand click to make it cost more, and brand terms often trade at $3–$8 against $15–$30 for category terms. On September 1, Search campaigns using automatically created assets or campaign-level broad match began auto-converting into AI Max settings covering wider search-term matching, text customization and Final URL expansion, which can send part of the $2,400 brand budget toward related searches rather than the exact name.

Read more: [First principle: your name does not empty the auction](https://groas.com/post/brand-search-cpcs-spiked-since-september#first-principle-your-name-does-not-empty-the-auction)

## Are AI Overviews causing my higher brand CPCs?

The article cites tracking showing AI Overviews on about 26% of branded queries early in September, 69% on September 26 and 90.48% on September 27, with the share holding above 80% afterward, and a separate crawl of 232.8 million US desktop searches finding an Overview on 83% of branded searches, appearing in position one in 76.2% of those cases. According to the article, that layout change competes for attention on the same screen as the ad and organic listing but does not by itself prove why CPC rose. The article also cites market-wide CPC growth averaging flat from Q3 2025 to Q2 2026 then rising 4% year over year in Q3 2026, with text-ad click growth at 4%, and warns against multiplying the $2,400 brand spend by that market-wide figure for a single brand campaign.

Read more: [Second layer: an AI Overview changes visibility, not your bid settings](https://groas.com/post/brand-search-cpcs-spiked-since-september#second-layer-an-ai-overview-changes-visibility-not-your-bid-settings)

## How should I audit a brand CPC spike before I touch a bid?

The article recommends starting in Change History filtered to September 1–10 for changes not made by the advertiser, then inspecting matching, text customization and Final URL expansion, and checking from August 17 whether a budget-limited campaign under Target CPA, Target ROAS or Target CPC is holding more firmly to the entered target. It then recommends comparing CPC, click volume and impression share for brand separate from non-brand using the same weekly windows from mid-August through late September. The article recommends opening Auction Insights to compare overlapping domains, overlap rate, outranking share and position-above rate, and reading search terms for close variants, city-and-service phrases or competitor-adjacent queries. The article notes Auction Insights requires at least 10% impression share and covers Search only, so an empty view is not proof that nobody is bidding.

Read more: [Audit the spike before you touch a bid](https://groas.com/post/brand-search-cpcs-spiked-since-september#audit-the-spike-before-you-touch-a-bid)

## How do I contain brand spend without hiding real competition?

The article recommends keeping brand in its own Search campaign with exact-match keywords for the name and chosen misspellings, a separate budget, and bidding tied to what branded customers are worth. If the audit finds unwanted expansion, the article recommends turning off only the relevant controls, adding negatives for category or competitor-adjacent searches, setting brand inclusions for the brand campaign and reviewing brand exclusions in non-brand and Performance Max, and reviewing text customization and destination controls. The article notes managing Final URL expansion depends on text customization being on, and a tCPA is a target for average acquisition cost, not a hard ceiling on each click. If a rival remains on exact-name searches, the article recommends funding the defense deliberately where worth the cost and improving ad relevance and landing-page match, noting rivals are not blocked from bidding on a name as a keyword while restriction on trademark use in ad text is separate.

Read more: [Contain brand spend without hiding the problem](https://groas.com/post/brand-search-cpcs-spiked-since-september#contain-brand-spend-without-hiding-the-problem)

## How often should I check brand performance to catch the next spike?

The article recommends watching brand and non-brand CPC, impression share, search terms and the top overlapping domain every morning, with a working trigger of a brand CPC move above 15% week over week to pull Auction Insights that day. The article states groas pairs autonomous search execution with human strategic ownership and records bid and budget moves with reasons available in its report of actions taken and why. The article concludes to separate brand, watch the searches it buys, and investigate a price jump before raising a bid, reserving human time for judgment about which clicks are worth defending.

Read more: [Make the audit a routine, not a September project](https://groas.com/post/brand-search-cpcs-spiked-since-september#make-the-audit-a-routine-not-a-september-project)

## Sources

[1] https://groas.com/post/brand-search-cpcs-spiked-since-september (the article this page answers from)