SEO or Google Ads: where to invest first

It is probably the question we hear most often after price: "We have a limited marketing budget. Does it go to Google Ads or to SEO?" The question is legitimate, but it is badly posed. It assumes both tools do the same job and you just have to pick the better one. In our practice of building and operating websites, we see something else: the two answer different questions, and the order in which you deploy them matters more than the choice itself.

Google Ads rents the demand that exists today, at a price you can know in advance. SEO builds an asset that gains value over time but delivers in months, not weeks. And a third variable, almost always forgotten, determines the return on both: your website itself.

This article gives real numbers (cost-per-click figures measured for the French-Canadian market, not recycled American averages), the arithmetic for deciding, and a sequence by business type.

The short answer, for the busy

Google Ads and SEO are not two versions of the same tool: the first rents existing demand, the second builds an asset. With Google Ads you pay for each visit at a price knowable in advance: in French-speaking Canada, a click on "refonte site web" (website redesign) costs USD $31.11 and a click on "créer un site web" (create a website) costs USD $16.52 (Google Ads data via DataForSEO, July 2026). Results arrive within days and stop the day the budget stops. SEO compounds over time but delivers in months. The decision comes down to margin arithmetic: if a new client is worth several thousand dollars to you, $31 clicks can be justified; at $300 per client, never. And before investing in either channel, make sure your site converts: advertising amplifies whatever your site already does, including its leaks.

A tap and a well

Google Ads works like a metered tap. You open it and the flow arrives within days: your ad enters an auction at every search, and you pay for each click. The flow is adjustable, predictable, and it stops the second you stop paying. Nothing accumulates: yesterday's click does not make tomorrow's any cheaper.

SEO is a well. Digging it is expensive up front: content, technical structure, time. For months, little comes out. Then the water starts flowing without a meter: a well-ranked page receives visits every month with no additional invoice, and each new page reinforces the others. If the mechanics feel fuzzy, we walked through them in SEO explained without the jargon.

The practical consequence: Ads answers "how do I get clients this month", SEO answers "how do I lower my acquisition cost a year from now". Both are good questions. They just have different deadlines.

What a click actually costs in 2026

The great advantage of Google Ads is that its price can be known before you spend. Here are three cost-per-click figures we measured in July 2026 for French-speaking Canada, via DataForSEO (Google Ads data, in US dollars, the currency of this dataset). A click on "refonte site web" (website redesign) sells for USD $31.11, on roughly 70 searches per month. A click on "créer un site web" (create a website) costs USD $16.52, on roughly 260 searches per month. And a click on "agents IA" (AI agents) goes for USD $9.53, also on roughly 260 searches per month.

Two readings matter. First, these prices do not fall from the sky: an auction reflects what other advertisers believe a client is worth. If the "website redesign" click sells for $31, it is because agencies estimate a redesign mandate comfortably justifies that price. A keyword's CPC is a signal of the margins in the industry buying it.

Second, look at the volumes. At 70 searches per month, even a perfectly run campaign on that keyword will only ever produce a handful of clicks. A $300 monthly budget buys about ten visits: not enough to conclude anything. On expensive keywords, a small budget produces noise, nothing you can act on. That is an honest reason not to run Ads at all, and one few ad agencies will give you.

The margin-per-client arithmetic

Let's run the full calculation with explicit assumptions. Take a $31 click and a site that converts well: one visitor in 25 fills out the form (4%). Cost of one inbound inquiry: $31 × 25 = $775. If you close one sale out of three inquiries, each new client cost you roughly $2,300 in advertising.

For a firm whose average mandate is worth $15,000, that is an excellent investment. For a business whose client is worth $300, it is a money-losing machine, no matter how well the campaign is run. Same channel, same keyword, same execution: only the denominator changes the conclusion.

This is why "SEO or Ads?" gets settled with three numbers: what a client is worth to you over their lifetime, what a click costs in your industry, and what your site converts. The first two can be measured in an hour. The third deserves its own section.

If your site leaks, Ads amplifies the leak

Rerun the calculation above with a site converting at 1% instead of 4%. Cost per inquiry jumps from $775 to $3,100. Nothing changed in the campaign: the quadrupling comes entirely from the site. Advertising does not fix a website, it multiplies whatever the website already does. A site that converts turns budget into clients; a site that leaks turns the same budget into traffic statistics.

It is the most neglected variable in this debate, and the one to fix first, because it improves the return on both channels at once. The classic leaks are known and repairable: we detailed several in five mistakes that hurt your conversions. Before renting traffic at $31 a click, make sure the bucket has no holes.

SEO compounds, if you survive the lag

SEO has a property advertising will never have: its results add up. The article published this year keeps receiving visits next year. A page that climbs pulls the others up with it. The cost is concentrated up front, then the marginal cost of each visit trends toward zero. On a two-to-three-year horizon, it is almost always the channel with the best acquisition cost.

But you have to survive the lag, and it is measured in months: we covered realistic timelines in how long before SEO delivers results. A business that needs clients in November cannot wait for an asset that delivers in spring. And SEO is not free: producing serious content and keeping a site technically sound costs time or money. The real difference lies elsewhere: one is rent, the other an asset.

One last point both camps forget: Ads is SEO's best market research tool. A few weeks of campaigning show which keywords bring real inquiries, not just traffic. Briefly paying for demand to learn where to dig the well is often the best use of a small ad budget.

The sequence by business type

No universal winner, but the sequences are fairly clear.

Urgent, local demand (plumbing, towing, locksmiths): Ads first. The customer is searching now, decides in minutes, and geography caps the auction. Local SEO and your Google Business profile run in parallel, not instead.

High-margin B2B services (professional services, industrial, software): both, in this order: a small Ads budget as a laboratory to validate keywords and messaging, then the bulk of the investment in SEO, because the sales cycle is long and the margin per client absorbs the lag.

Low-margin e-commerce: the arithmetic rarely forgives generic keywords. Priority goes to product-page SEO and the long tail, where the ad competition has not settled in.

A new category (like AI agents right now): search volumes are still low and clicks cheap. A small Ads budget captures what little demand exists, but content is what builds the category, and early publishers will hold the positions before CPCs climb.

In all four cases, the first step is the same: a site that converts.

Where to start

Before opening a Google Ads account or signing an SEO contract, measure what your site does with the visits it already gets. That is exactly what an audit examines: where visitors drop off, and which of the two channels your situation justifies first. Then you invest in the order that pays, numbers in hand.

→ Request an audit of your site