The short answer
B2B SaaS companies typically pay $5-$50 per click, with crowded categories and competitor terms at the top. Most growth-stage SaaS companies spend $5,000-$30,000 a month on Google Ads. Judge it on cost per paying customer and payback period, not cost per sign-up: trials and demos that never convert make campaigns look better than they are.
Cost per click by keyword type
| Keyword type | Example | Typical CPC | Intent |
|---|---|---|---|
| Category | "project management software" | $10-$40 | Researching options |
| Category + qualifier | "project management software for agencies" | $6-$25 | Narrower, often better fit |
| Competitor | "[competitor] alternative" | $8-$40 | Unhappy with a current tool |
| Problem / use case | "track billable hours" | $3-$15 | Earlier stage, cheaper |
| Your brand | "[your product] pricing" | $1-$5 | Highest intent; protect it |
Sign-ups aren't customers
The most common SaaS Google Ads mistake is optimising for trials or demo requests and stopping there. Google will happily find you lots of cheap sign-ups from students, competitors and people who never activate. Cost per trial falls, revenue doesn't move.
The fix is to send deeper conversion events back to Google: activated users, sales-qualified leads, first payments, plan value. With those in place, smart bidding learns to find the searchers who actually buy, even if each click costs a bit more.
Worked example: a sales-led B2B SaaS product
A product with an average first-year contract of $9,600, spending $15,000 a month at about $18 per click on category and competitor terms.
| Step | Example |
|---|---|
| Monthly ad spend | $15,000 |
| Average cost per click | $18.00 |
| Clicks | 833 |
| Conversion rate to demo requests | 4.5% |
| Demo requests | 38 |
| Cost per demo request | $400 |
| Close rate to new customers | 18% |
| New customers | 6.8 |
| Cost per new customer | $2,222 |
| First-year contract value | $9,600 |
| Revenue | $64,800 |
| Return on ad spend | 4.3x |
About $400 per demo and $2,222 per customer: roughly 4.3x in first-year revenue per dollar of ad spend. With a typical SaaS gross margin and good retention, that's a CAC that pays back well within a year.
Where SaaS ad budgets get wasted
"Free" and "open source" searches
Unless you have a free plan, these burn budget on people who won't pay.
Job and login searches
"[Category] jobs" and competitors' login pages are common leaks in software accounts.
Wrong countries
Global targeting on a product that only sells in a few markets pays for clicks you can't close.
Competitor terms to your homepage
"Alternative" searchers want a comparison. A dedicated comparison page converts far better.
How to lower your SaaS customer acquisition cost
- 1
Import pipeline and revenue
Connect your CRM or product analytics and send SQLs, opportunities and closed-won deals back to Google.
- 2
Build comparison pages
Honest "[you] vs [competitor]" and "[competitor] alternatives" pages make competitor bidding pay.
- 3
Pair with LinkedIn
Google captures demand; LinkedIn Ads reach the exact job titles who'll sign off. Together they cover the buying committee.
- 4
Protect your brand terms
Competitors bid on your name. A cheap brand campaign keeps your highest-intent traffic.