What Are the Highest PPC Keywords and Why They Matter for Brands?

Quick answer

The highest-paying PPC keywords are concentrated in industries where one customer is worth a lot, led by legal services, home improvement and dental care: LocaliQ's 2026 search benchmarks put average cost per click at $9.87 for attorneys and legal services, $8.33 for home and home improvement and $8.00 for dentists, against an all-industry average of $5.42. For your brand, though, the top PPC keywords are not the most expensive ones. They are high-intent terms that convert at a cost per click your margins can support.

What are PPC keywords?

PPC (pay-per-click) keywords are the words and phrases advertisers bid on in Google Ads and Microsoft Advertising so their ads appear when people search for them. You pay only when someone clicks. Each keyword has a match type that controls how closely a search must match:

• Broad match reaches related searches and relies most on Google's automation.
• Phrase match shows ads for searches that include the meaning of your keyword.
• Exact match shows ads for searches with the same meaning or intent as the keyword.
• Negative keywords block irrelevant searches, such as ones containing "free" or "jobs."

Highest-paying PPC keywords by industry

LocaliQ and WordStream's 2026 search advertising benchmarks, based on thousands of Google Ads and Microsoft Ads campaigns, show where clicks cost the most:

1. Attorneys and legal services: $9.87 average CPC
2. Home and home improvement: $8.33 average CPC
3. Dentists and dental services: $8.00 average CPC
4. Personal services: $7.17 average CPC

The same report puts the all-industry average CPC at $5.42, with arts and entertainment the lowest at $1.63. Individual keywords inside these categories, such as specific injury-law or emergency-repair terms, can cost far more than the category average, so always check live estimates for your own market.

Why some keywords cost so much

Google Ads runs an auction for every search. Four factors drive the price:

• Customer value. If one client is worth thousands of dollars, advertisers can afford high bids and still profit.
• Competition. More advertisers bidding on the same term pushes the price up.
• Quality Score. Google says its top of page bid estimate is based on each keyword's Quality Score and competition. A very high estimate can signal weak ad relevance or landing page experience.
• Intent. Searches that signal readiness to buy, such as "emergency plumber near me," attract the most bidders.

Types of high-converting PPC keywords

Effective PPC keywords usually fall into a few intent groups:

• Brand keywords: your company and product names. They are cheap and convert well, and they protect you from competitors.
• Transactional keywords: terms with "buy," "price," "quote," "near me" or "book" that show purchase intent.
• Comparison keywords: "best [product] for [use case]" or "[brand] vs [brand]" searches from people choosing between options.
• Problem-solution keywords: searches that describe the pain your product removes.
• Long-tail keywords: longer, specific phrases with lower volume, less competition and often higher conversion rates.
• Competitor keywords: bidding on rival brand names. Read our guide to trademark bidding before you try it.

How to find the top PPC keywords for your brand

1. Start with Keyword Planner. Google's free tool shows estimated average monthly searches and bid ranges. Google defines the top of page bid estimate as the bid you likely need for your ad to show among the ads at the top of the first page.
2. Mine your search terms report. It shows the actual searches that triggered your ads. Add winners as keywords and losers as negatives.
3. Use Google Search Console. Queries where you already rank organically reveal the language customers use.
4. Listen to customers. Reviews, sales calls and support tickets are full of phrases competitors ignore.
5. Prioritize by intent, then volume. A small keyword that converts beats a large one that does not.

How much can you afford to pay per click?

Before you chase an expensive keyword, calculate your break-even CPC:

Break-even CPC = average order value x conversion rate x profit margin

For example, with a $150 order, a 4% conversion rate and a 40% margin, break-even CPC is 150 x 0.04 x 0.40 = $2.40. If a keyword's top of page estimate is $9, it only works if you can raise conversion rate, order value or lifetime value. That math explains why law firms can pay close to $10 a click while many e-commerce brands cannot.

Retargeting with search keywords

Retargeting in search works by adding audience lists, such as past site visitors, to keyword targeting. That lets you bid more on broad or high-volume keywords only for people who already know your brand, where conversion rates tend to be higher. Our comparison of retargeting platforms covers the options beyond Google.

Where paid social fits

Paid social does not run on keywords the way search does. On Meta and TikTok, the creative itself does much of the targeting, because the algorithm finds people who respond to the ad. Many brands pair search, which captures demand that already exists, with creator-led video on social, which creates new demand that later shows up as branded searches.

Frequently asked questions

What are the top PPC keywords?

By cost, the top PPC keywords sit in legal, home improvement and dental categories. By performance, the top keywords for any brand are high-intent terms such as brand, transactional and long-tail phrases that convert profitably.

What are PPC keywords?

They are the words and phrases advertisers bid on so their ads appear in search results. The advertiser pays each time someone clicks the ad.

What are the highest-paying PPC keywords?

According to LocaliQ's 2026 benchmarks, attorneys and legal services have the highest average CPC at $9.87, followed by home and home improvement at $8.33 and dentists at $8.00.

How do I find high-converting keywords?

Combine Keyword Planner data with your search terms report and customer language, focus on purchase intent, and check each keyword against your break-even CPC.

Sources

• LocaliQ and WordStream, "Search Advertising Benchmarks for 2026", updated June 1, 2026
• Google Ads Help, "Top of page bid estimate: Definition", accessed October 2026
• Google Ads Help, "Use Keyword Planner", accessed October 2026