TL;DR: Google Ads captures buyers already searching for your service. Facebook Ads builds the mental availability that makes buyers think of you first. For most Australian service businesses that need leads now, Google Ads is the right starting point. Add Facebook Ads once Google is profitable and you want to grow market share, not just harvest existing demand.

Facebook Ads vs Google Ads: Which Is Right for Your Australian Business?

The question almost every Australian SME asks before spending a dollar on advertising: "Should I be on Google or Facebook?"

It sounds like a budget question. It is actually a strategy question. And the way you frame it will either compound your growth or quietly cap it.

The standard advice is to pick one, get it working, then add the other. That is not wrong. But it misses the deeper point: Google Ads and Facebook Ads are not substitutes. They operate on entirely different mechanisms in the buying process. Choosing one and ignoring the other is a bit like choosing between having a shopfront and having a reputation. You need both. The sequence just matters.

What Google Ads and Facebook Ads actually do (and why most businesses confuse them)

Byron Sharp, Australian marketing scientist and author of How Brands Grow, gives us the clearest model for thinking about this. Brands grow through two mechanisms: mental availability (being easy to think of when a need arises) and physical availability (being easy to find and buy when a need arises).

Here is his counterintuitive observation: "A lot of what is called 'advertising' is physical/digital availability, e.g. Google search, Amazon display."

Google Search Ads are not really advertising in the traditional sense. When someone types "emergency plumber Brisbane" into Google, the category decision has already been made. They need a plumber. Right now. Google Ads puts your name in front of them at the exact moment of that decision. It is presence at a point of purchase. Physical availability.

Facebook Ads operate at a different point in the process entirely. You identify audiences who match the profile of your ideal customer and appear in their feed before any need arises. Done well, this builds the memory structures that determine which brand comes to mind when that person eventually enters your category. Mental availability.

This single distinction changes everything about how you should allocate budget, set expectations, and measure results. Most Australian SMEs treat these platforms as interchangeable because they both involve a monthly ad spend and a dashboard full of numbers. They are not interchangeable. They solve different halves of the same growth problem.

Why running only Google Ads eventually stops working

Les Binet and Peter Field spent decades analysing IPA effectiveness award-winning campaigns across hundreds of brands and arrived at one of the most counterintuitive findings in modern marketing: the optimal split between brand-building and activation advertising is roughly 60/40. Sixty percent toward long-term brand awareness. Forty percent toward direct response and lead capture.

Most Australian SMEs do the inverse. They put 100 percent on activation (Google Search) because it is measurable. Every lead traced to a keyword. Every dollar accounted for in a clean report. And then they wonder why growth plateaus after the first 12 to 18 months.

Binet and Field called this "over-activation." You can harvest all the existing demand in your market, but if you are not building brand awareness simultaneously, you are steadily draining a pool without refilling it. Google Ads works on people already in-market. Brand advertising works on the far larger group who will be in-market eventually.

Sharp's Double Jeopardy Law makes this concrete. Validated across 130+ brands in 13+ product categories, it shows that smaller brands suffer twice: fewer buyers, and those buyers are slightly less loyal. The only exit from double jeopardy is penetration. Reaching more people in your category who do not yet think of you. That is what Facebook Ads, run as a brand-building tool, can do for an Australian SME that has built its Google foundation.

If you want to understand why loyalty campaigns also underperform here, see Why Your Loyal Customers Won't Grow Your Business.

Rory Sutherland's warning about measuring only what is easy to measure

Rory Sutherland, Vice Chairman of Ogilvy, has a useful provocation for any business making platform decisions based on attribution data alone: we systematically ignore interventions that might work because we cannot prove them in a spreadsheet, and we systematically overinvest in things we can prove even when the proof is incomplete.

Google Search is heaven for attribution. Click to lead to CRM. Cost per lead. Conversion rate. Return on ad spend. The dashboard is satisfying and the numbers are defensible in any budget meeting.

Facebook brand awareness is harder to attribute. Someone sees your ad on a Thursday, forgets about it, then searches for your service four weeks later after a conversation with a colleague. Google gets the credit. Facebook did part of the groundwork. This is not a flaw in Facebook. It is a flaw in last-click attribution, which remains the dominant model in most small business ad accounts.

Avinash Kaushik's See-Think-Do-Care framework maps this clearly. Most Australian SMEs measure at the Do stage: the click, the lead, the conversion. They ignore the See stage (brand exposure to people not yet aware they need you) and the Think stage (consideration and comparison). They optimise the bottom of a funnel they are not adequately filling at the top, then blame the funnel when growth stalls.

The practical implication: do not make Facebook Ads budget decisions based on direct response attribution alone. If you are running Facebook alongside Google and Google's cost per lead drops steadily while branded search volume increases, Facebook is working. You just need to know where to look.

The practical sequencing for Australian service businesses

Mark Ritson teaches that good strategy begins with diagnosis before prescription. The question is not "which platform is better?" but "which platform fits my current situation?"

• Your service is something people search for (trades, accounting, legal, health, B2B consulting)
• You need leads within 30 to 90 days
• Your sales cycle is short to medium (one to three conversations before a decision)
• Your total monthly ad budget is under $3,000

• Google is producing leads at an acceptable, stable cost per lead
• You want to reach people not actively searching yet
• Your average job or contract value is high enough to support a longer consideration phase
• You have or can produce visual content (photos, short video, before and after results)

What running both platforms actually looks like

A practical allocation for an Australian SME with $5,000 per month in total ad spend:

• $3,000 to Google Search targeting high-intent keywords in your service category and location
• $2,000 to Facebook split between retargeting website visitors from Google traffic and cold prospecting to lookalike audiences built from your existing client list

This is why the combination compounds over time in a way that neither platform achieves alone. Google alone hits a ceiling defined by total search volume in your market. Facebook alone struggles without a proven conversion path to point audiences toward. Together, they cover the full buyer journey from first impression to active search to decision.

FAQ

Is Google Ads or Facebook Ads cheaper for Australian businesses?

Cost depends on your industry, competition, offer quality, and how well the campaigns are structured. In Google Ads, cost per lead for Australian service businesses typically ranges from $30 to $250 depending on the category. Trades and emergency services sit at the higher end. Professional services and B2B vary widely by niche and geography. Facebook Ads cost per lead ranges from $20 to $150 for well-targeted campaigns with strong creative, but poor creative can push that above $300 regardless of how precise the targeting is. Neither platform is universally cheaper. The more useful question is cost per acquired client, not cost per lead. A $200 Google lead that converts at 30% to a $6,000 job outperforms a $40 Facebook lead that converts at 5% to a $1,500 job every time. Dream Outcome tracks cost per lead and cost per acquisition from day one, so budget decisions are based on real business economics rather than platform averages.

Can I run Google Ads and Facebook Ads at the same time on a small budget?

Yes, but split budgets rarely outperform focused budgets in the early stages. If your total ad spend is under $3,000 per month, concentrate on one platform first. Google Ads is the better starting point for most Australian service businesses because high-intent search demand converts faster and gives you the data you need to understand your funnel. Once you are generating leads consistently and know your cost per lead, introduce Facebook to expand reach. Splitting $1,500 across both platforms before either campaign has enough data to optimise is one of the most common mistakes we see when auditing new accounts. You end up with two underfunded campaigns and no clean signal from either. The one exception: if you have strong visual assets and a product that photographs well (construction, landscaping, interior design), a low-budget Facebook awareness campaign alongside Google from the start can accelerate brand recognition and shorten the consideration phase for people who later find you through search.

How do I know when Google Ads has worked well enough to add Facebook?

Three indicators signal you are ready to add Facebook. First, you are generating leads at a cost per lead you can sustain profitably, and you know what percentage of those leads convert to paying clients. Second, you have been running Google for at least 60 to 90 days and the campaign has stabilised past the algorithm's learning phase. Third, you have enough margin in your client acquisition cost to fund a second channel without threatening cash flow. The worst time to add Facebook is when Google is not working yet. You end up managing two uncertain channels instead of fixing one. The best time is when Google is producing a predictable, profitable volume of leads and your constraint is market size rather than campaign performance. At that point, Facebook's ability to build mental availability with the much larger group of people not yet searching becomes genuinely additive, not a distraction.