The most expensive mistake in keyword research is chasing volume. A keyword with 10,000 monthly searches that never converts is worth less to a SaaS business than one with 300 searches where the searcher is ready to buy. Volume is a vanity metric; intent is the one that pays. Here's how to tell them apart and find the keywords that actually bring customers.
The four search intents
Every query falls into one of four intent types, and they convert very differently:
- Informational — "what is keyword difficulty," "how does SEO work." The searcher wants to learn. Rarely converts directly; they're not in buying mode.
- Navigational — "semrush login," "ahrefs pricing." They want a specific destination. Almost never converts for you unless it's your brand.
- Commercial investigation — "best keyword research tool," "surfer vs frase," "ahrefs alternatives." They're comparing options before deciding. High intent — they're close to buying and choosing between solutions.
- Transactional — "keyword gap tool," "buy SEO software," "invoice generator free." They want to act now. Highest intent.
For a SaaS product, commercial and transactional queries are where signups come from. Informational queries fill the top of the funnel but rarely convert on the click.
The signals of high intent
You can spot high-intent keywords by their shape. Watch for these modifiers:
- Comparison words: "vs," "alternative," "compared," "or." Someone searching "[competitor] alternative" is actively shopping.
- Commercial qualifiers: "best," "top," "review." They've decided they need a tool and are picking one.
- Product-category words: "software," "tool," "platform," "app," "generator." They want a product, not an explanation.
- Buying words: "pricing," "cost," "free," "trial," "buy." Bottom of the funnel.
- Audience/use-case words: "for freelancers," "for small teams," "for SaaS." Specific need, ready to match it to a solution.
A keyword with any of these usually carries more buying intent than a broad informational term with ten times the volume.
Read the SERP, not just the keyword
The fastest intent check is to look at the actual results page. Google has already decided what the searcher wants, and the SERP shows you:
- Ads present? If Google is running shopping or text ads for a query, businesses are paying for those clicks — a strong signal of commercial value. Advertisers don't bid on worthless traffic.
- What kind of pages rank? If the top results are product pages, comparison articles, and pricing pages, it's a commercial query. If they're all "what is" explainers and Wikipedia, it's informational.
- Is there an AI Overview? Overviews cluster on informational queries and appear far less on commercial ones — their absence is a mild signal you're looking at a buying query.
Open the top 5 results before targeting any keyword. The SERP tells you the intent more reliably than the words do.
Where to find high-intent keywords
Once you know what you're looking for, they're findable:
- Modifier expansion. Take your product category and add the high-intent modifiers above — "[category] software," "[category] for [audience]," "[competitor] alternative." Each combination is a candidate.
- Your competitors' money pages. Look at what keywords your competitors' pricing, comparison, and product pages rank for, not their blog. Those are the commercial terms in your space. (The method is in competitor keyword research.)
- Your own converting queries. In Google Search Console, find the queries that already drive signups, and target close variations. If one high-intent term converts, its siblings probably will too.
- The gaps that pass the intent filter. When you hunt for keyword gaps, intent match is the filter that separates useful gaps from busywork.
The trap to avoid
The trap is seductive: a keyword with huge volume and an easy-looking difficulty that happens to be purely informational. You'll rank, you'll get traffic, and none of it will convert, because the searcher never wanted a product. High volume plus low intent is a traffic vanity play, not a growth one.
The opposite bet wins for SaaS: a lower-volume, high-intent keyword where every visitor has a reason to use your product. Even a modest difficulty and modest volume are fine if the intent is right — a handful of converting visitors beats a flood of learners.
The bottom line
Stop sorting your keyword list by volume. Sort it by intent, then by winnability. The keywords worth writing for are the ones where someone searching has a real reason to become your customer, the comparisons, the category terms, the use-case queries, the buying words. Those convert. Everything else is traffic that looks good in a chart and does nothing for your business. Match the keyword to the buyer, not to the search volume.