Google Ads Keyword Research: Complete Guide for 2026
What you'll learn
- The 3 types of search intent and which keywords belong to each
- The best free and paid tools for keyword research in 2026
- How to evaluate any keyword: volume, CPC, competition, and intent signals
- The long-tail keyword strategy for lower CPCs and higher conversion rates
- A step-by-step keyword research workflow for a SaaS company
1 Start with Search Intent, Not Keywords
The most common keyword research mistake is starting with a list of keywords and working backwards to intent. The right approach is the reverse: understand what your customers are trying to accomplish when they search, then find the keywords that signal that intent.
Every search query falls into one of three intent categories:
Learning or researching
The user wants to understand something, not buy. Low commercial value, high content value.
Looking for a specific site
The user knows where they want to go. Bidding on your own brand is smart here.
Ready to buy or sign up
The user has high commercial intent. These keywords drive conversions directly.
For performance campaigns, focus 70-80% of your budget on transactional keywords. Informational keywords can work for top-of-funnel lead gen (especially in B2B) but require landing pages built for that intent stage, not product pages.
2 The 4 Keyword Types You Need
Your own brand + variants
Highest intent, lowest CPC, highest conversion rate. Always run. Protect your brand from competitors bidding on your name.
Product/service descriptors
Your main growth engine. Broader reach, higher competition. Segment by specificity, broader terms get more volume, specific terms convert better.
3-5+ word specific phrases
Lower volume but dramatically lower CPC and higher conversion rates. Ideal for Smart Bidding because the intent signal is crystal-clear.
Competitors' brand names
High CPC, lower quality scores (you can't use competitor trademarks in ad copy), but valuable for capturing users in comparison mode.
3 The Best Keyword Research Tools in 2026
| Tool | Cost | Best For | Unique Advantage |
|---|---|---|---|
| Google Keyword Planner | Free | Volume + CPC estimates | Direct from Google, most accurate data |
| Google Search Console | Free | Organic search term discovery | Real queries your site already ranks for |
| Google Autocomplete | Free | Long-tail variations | Real-time user intent, question formats |
| Google "Related searches" | Free | Lateral keyword expansion | Shows what people search next |
| Auction Insights report | Free (in Ads) | Competitor keyword discovery | Who you're competing against by keyword |
| Semrush / Ahrefs | Paid (~€100/mo) | Competitor keyword gap analysis | See exactly which keywords competitors rank/pay for |
Google Keyword Planner + Search Console + Autocomplete covers 80% of keyword research needs for most accounts. Paid tools shine for competitive intelligence and gap analysis, worth it once you're spending £5k+/month.
4 How to Evaluate Any Keyword
Not every keyword with high volume is worth bidding on. Evaluate keywords across four dimensions before adding them to your account:
| Metric | What to Check | Red Flags |
|---|---|---|
| Search Volume | Monthly searches in your target geo | Under 100/month = micro-niche; over 100k = very competitive |
| Avg. CPC | Expected cost per click (bid range in Keyword Planner) | High CPC with unclear transactional intent = poor ROI |
| Competition | Low / Medium / High (Keyword Planner indicator) | High competition + broad keyword = expensive without focus |
| Commercial Intent | Look at the SERP, are there ads? Are they product/service ads? | No ads = low monetization potential for that keyword |
A keyword with 500 monthly searches and a 5% conversion rate is worth more than a keyword with 50,000 searches and a 0.1% conversion rate. Always estimate potential conversions, not just potential clicks.
5 The Long-Tail Strategy: Lower CPC, Higher Intent
Long-tail keywords, phrases with three or more words, are the most underused opportunity in Google Ads. Here's why they outperform generic terms for most advertisers:
| Keyword | Monthly Volume | Avg. CPC | Likely Conv. Rate | Verdict |
|---|---|---|---|---|
| CRM software | 40,000 | €8.50 | 0.8% | Expensive, competitive |
| CRM software for small business | 8,000 | €5.20 | 2.1% | Moderate, better targeting |
| CRM software for small business free trial | 1,200 | €3.10 | 5.4% | Efficient, high intent |
The long-tail keyword costs 63% less per click and converts at 6.75x the rate of the head term. For the same €1,000 budget: the head term buys 117 clicks producing ~0.9 conversions. The long-tail buys 322 clicks producing ~17 conversions.
Run long-tail seed keywords on broad match with Smart Bidding. The algorithm will find additional high-intent variations you'd never have thought to add manually, while your long-tail base keeps the AI anchored to the right intent profile.
6 The Keyword Expansion Framework
Keyword research isn't a one-time task, it's an iterative process. Here's the systematic expansion framework:
Seed keywords: Core terms that describe your product directly ("CRM software," "customer relationship management tool").
Variations: Synonyms, alternate phrasing, industry jargon ("contact management software," "sales pipeline tool," "lead tracking system").
Related terms: Keywords in the same category that your audience also searches ("email marketing software," "sales automation").
Questions: "What is," "how to," "best," "top", these capture users in research mode who can be converted via free trial offers.
Competitor terms: Competitor brand names + "[competitor] alternative" and "[competitor] vs [you]" queries.
7 Step-by-Step Workflow: SaaS CRM Example
Here's how to run keyword research for a SaaS CRM product targeting small businesses, from zero to a structured keyword list ready to load into Google Ads.
List your seed keywords (15 minutes)
Write every way a customer might describe your product. For a CRM: "CRM software," "customer database," "contact management," "sales pipeline tool," "lead tracker." Aim for 10-20 seeds.
Run seeds through Google Keyword Planner (30 minutes)
Enter all seeds at once. Filter by your target country. Export all results. Sort by "Competition" (focus on Medium and High, those have commercial intent). Note volume and CPC ranges for budget planning.
Mine Google Autocomplete for long-tail (20 minutes)
Type each seed into Google and note the autocomplete suggestions. Then add letters (a, z) after your seed to surface "CRM software a[utomation]," "CRM software b[est]" etc. Capture all relevant suggestions.
Check Auction Insights for competitor keywords (15 minutes)
In your existing campaigns (or a competitor's landing page URL in Keyword Planner), identify which competitors appear. Then research those competitor brand names as potential keywords.
Organize into themes (20 minutes)
Group keywords into thematic clusters: Brand, Generic-Broad, Generic-Long-tail, Feature-Specific, Competitor. Each cluster becomes an ad group (STAG approach). Aim for 5-15 keywords per cluster.
Build your initial negative keyword list (15 minutes)
Before launching, add exclusions: "free," "open source," "GitHub," "tutorial," "how to," job titles ("CRM manager jobs"), and irrelevant verticals. This prevents wasted spend from day one.
8 Organizing Keywords into Ad Groups
Once you have your keyword list, organize them by grouping thematically similar keywords into the same ad group. The rule of thumb: if you'd write a different ad for it, it needs its own group.
| Ad Group | Keywords Included | Ad Focus |
|---|---|---|
| CRM-Brand | [yourbrand], [yourbrand] CRM, [yourbrand] pricing | Brand recognition, direct CTA |
| CRM-Generic-Broad | CRM software, customer relationship management, CRM tool | General product benefits |
| CRM-Small-Business | CRM for small business, small business CRM, SMB CRM software | SMB-specific pain points |
| CRM-Free-Trial | CRM free trial, try CRM software, CRM demo | Free trial offer, low commitment |
| CRM-Competitor | [Competitor A] alternative, vs [Competitor B], switch from [Competitor] | Comparison and differentiation |
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