Choosing a Google Ads agency is easy to get wrong and expensive to undo. The wrong pick burns your budget on clicks that never become customers, locks your campaigns behind someone else's login, and hands you a glossy report that says nothing about revenue. This guide covers what a good agency actually does, the questions to ask before you sign, fair pricing for the Australian market, and the red flags that should send you walking. It's written for the small and medium businesses spending their own money, not for enterprise marketing teams.
New here? See how UnderCurrent runs Google Ads, SEO and AI search as one programme.
What does a Google Ads agency actually do?
A good Google Ads agency turns a monthly budget into a measured pipeline of leads or sales, handling everything from keyword research and ad testing to conversion tracking and weekly pruning of wasted spend. It handles the auction mechanics so you don't have to: keyword research, writing and testing ads, conversion tracking, bidding strategy, geo-targeting to your service area, briefing landing pages, and pruning wasted spend each week. Google Ads runs a live auction every time someone searches, deciding in roughly 100 to 300 milliseconds which ads show and what each click costs. Your position depends on your bid and your Quality Score together, not budget alone, so a sharper account can outrank a bigger spender and pay less per click. This matters because the platform itself is dominant: the ACCC has found Google holds substantial market power in online search and search advertising. The agency's real job is account health: tight keyword lists, ruthless negative keywords, and clean conversion data. It helps to know the basics yourself, so our foundations guides cover the mechanics and how paid search sits next to SEO.
Do Google Ads work for small businesses in Australia?
Google Ads works for Australian small businesses when the maths works, and not before , paid search puts you in front of people already looking for what you sell, which is why it converts. Across the wider market, 84% of marketers report good results from PPC, according to HubSpot's marketing statistics. HubSpot also reports the channel returns a 200% average return, about AUD 2 back for every AUD 1 spent. Global benchmarks put the average search conversion rate near 4.4% and cost per click around $2.69, per a 2026 Google Ads benchmark analysis. Averages hide a lot, though: pricing is auction-set and swings by industry and location, as one Australian local-business guide notes. Australia had 2,729,648 actively trading businesses as of 30 June 2025, with 994,178 of them employing staff, per the Australian Bureau of Statistics. Google Ads works when a customer is worth enough to cover a cost per lead in the tens to low hundreds of dollars, and when you can track which clicks become customers.
Should you hire a Google Ads agency or run it yourself?
Run Google Ads yourself only if you genuinely have time to manage it every week , below roughly AUD 2,000 a month in ad spend, a tidy campaign is learnable; above that, the weekly workload and cost of mistakes usually justify an agency. The answer depends on your spend, your spare hours, and your appetite for a learning curve. Below roughly AUD 2,000 a month in ad spend, you can often run a tidy campaign yourself once you've learned conversion tracking and negative keywords. Above that, the weekly workload and the cost of mistakes usually justify an agency, and the large majority of businesses now use Google Ads as their main paid channel, per a 2026 benchmark analysis. With 437,150 new businesses started across Australia in 2024-25, competition for clicks keeps climbing.
| Factor | Do it yourself | Specialist agency |
|---|---|---|
| Learning curve | 20 to 40 hours upfront | None for you |
| Weekly time | 3 to 5 hours, ongoing | A reporting call |
| Wasted spend | High until you learn | Pruned weekly |
| Conversion tracking | Often skipped | Built and tested |
| Best for | Under AUD 2,000/mo, one service | Multi-service, scaling |
To build the skill in-house, start with our AI training guide and our SEO for small business guide.
How much does a Google Ads agency cost in Australia?
A Google Ads agency charges a management fee that sits on top of your ad budget, never inside it , your ad spend goes to Google, and the agency fee is separate, with Australian retainers typically running AUD 800 to AUD 3,500 a month. This is what owners misread most. In Australia, it falls into a few common models.
| Pricing model | Typical Australian range | Best suited to |
|---|---|---|
| Flat monthly retainer | AUD 800 to AUD 3,500 a month | Most single-platform small businesses |
| Percentage of ad spend | 10 to 20 percent of spend | Budgets above AUD 10,000 a month |
| Hybrid base plus percentage | Base AUD 1,000 to AUD 2,000 plus a slice | Growing accounts that want fairness |
| Performance or per-lead | A set fee per verified lead | Businesses with solid tracking already |
Most small businesses on a single platform pay a flat retainer. Percentage-of-spend deals suit larger budgets but reward the agency for spending more, so watch the incentive. A hybrid base-plus-percentage is usually fairest for a growing account. Whatever the model, a fair agency ties part of its fee to outcomes you can verify, like qualified leads. Test your own numbers with our ROI calculator first.
What should you ask a Google Ads agency before you sign?
The questions you ask before signing reveal more than any case study on the agency's website, and a good agency answers all of them without flinching. A good agency answers all of these without flinching, so ask them cold:
- Who owns the Google Ads account? It must be registered to you, under your email, with you as the admin.
- How are conversions tracked? You want native tracking through Google Tag Manager, counting calls and form submissions.
- What happens to my account if I leave? You keep the account, the history, and the landing pages.
- What is in the monthly report? Cost per lead and revenue, not impressions and clicks.
- How often are search terms reviewed? Weekly for the first 90 days is the honest answer.
- Is there a lock-in contract? A short minimum term is fair; a long lock-in with no exit isn't.
Run the checklist below when you interview anyone. If an agency dodges the ownership question, that's your answer.
Google Ads agency vetting checklist
[ ] Account registered to my email, I am the admin
[ ] Conversion tracking via Google Tag Manager: calls and forms, not page views
[ ] I keep the account, history and landing pages if I leave
[ ] Monthly report shows cost per lead and revenue, not just clicks
[ ] Search-terms report reviewed weekly for the first 90 days
[ ] Short minimum term, no multi-year lock-in
[ ] No guarantees of ad position or lead volume
Our process page shows how each of these should be handled.
What are the red flags of a bad Google Ads agency?
The clearest red flag is an agency that owns your account and will not hand it back, because leaving them means starting again from zero campaign history. Bad agencies share a pattern, and once you see it, it's hard to miss:
- They own your account. You become a tenant in your own campaigns, and leaving means starting again from zero history.
- They report clicks and impressions, never cost per lead or revenue, so you can never tell if the money worked.
- They leave Google's auto-apply recommendations switched on, which quietly push your budget up to suit Google.
- They run one unstructured "Campaign 1" with no ad groups and no negative keyword list.
- They guarantee a position or a lead count. Nobody controls the auction, so guarantees are sales theatre.
- They want a multi-year lock-in before they've proven anything at all.
The deepest red flag is vagueness. If you can't get a straight answer on conversion tracking or account ownership, the agency is either hiding weak work or doesn't know. Either way, walk.
How do you tell if your Google Ads agency is working?
Judge your Google Ads agency on cost per qualified lead and revenue, not on clicks , impressions and click-through rate are inputs, not outcomes, and a healthy account improves cost per lead as Quality Score climbs and wasted spend falls. Clicks, impressions and click-through rate are inputs. They aren't outcomes. The numbers that prove an agency earns its fee are cost per qualified lead, cost per acquired customer, and return on ad spend. A healthy account improves these over time as Quality Score climbs and wasted spend falls. Check three signals each month: is cost per lead holding or falling while volume grows; is the search-terms report being actively pruned; and can the agency explain plainly what they changed and why. Judge on a 30-day rolling window, because 7-day windows are mostly noise. Remember too that paid search shares the page with organic results and AI Overviews, so a good agency watches the whole result, not just the ad. Our case studies show what real, measured progress looks like.
What 88 Australian agency websites revealed about quality
Most Australian Google Ads content is mediocre, and the campaigns behind it often are too , across 88 scored articles from 35 Australian sites, the average landed at 62.4 out of 100, with 47% falling into the weak band. We score published articles with the UnderCurrent Article Reviewer, a 100-point rubric (version 2.0.0) that reads content the way an AI search engine does. As of May 2026, we have scored 88 Google Ads and PPC articles drawn from 35 different Australian sites. The average landed at 62.4 out of 100, the median at 61, and scores ranged from 30 to 93. For comparison, UnderCurrent's own articles average 87.1 across 31 pieces, and the whole reviewed corpus of 196 articles averages 56.7. Content quality is a fair proxy for care: a shop publishing thin, interchangeable articles is usually running thin, interchangeable campaigns.
| Quality band | Score range | Articles | Share |
|---|---|---|---|
| Strong | 80 to 100 | 20 | 23% |
| Competent | 60 to 79 | 27 | 31% |
| Weak | 30 to 59 | 41 | 47% |
| Below 30 | 0 to 29 | 0 | 0% |
UnderCurrent Article Reviewer, rubric v2.0.0, sample of 88 articles across 35 Australian sites, as of May 2026.
What surprised us when we audited those agency articles
Three findings from auditing 88 Australian Google Ads articles hit harder than the score sheet alone shows, and the pattern inside ad accounts matched what we found in the content. First, the weak band wasn't full of bad writing. It was competent writing with nothing original in it: no first-party data, no real numbers, nothing an AI engine couldn't pull from ten other pages. Second, the gap between the 62.4 average and our own 87.1 came almost entirely from evidence, not polish. The mediocre articles read fine; they just cited nothing a reader could check. Third, the pattern matches what we see inside ad accounts. The same shop that writes a generic blog post tends to run a generic campaign, with no negative keywords and no conversion tracking. Quality of thinking shows up everywhere, or nowhere.
How does Google Ads fit with SEO and AI search?
Google Ads buys visibility today while SEO and AI search earn it for years, and businesses running paid and organic together tend to win more clicks and more profit than either channel alone. Paid and organic search aren't rivals. Google Ads gives instant placement while the slower assets build. Businesses running paid and organic together tend to win more clicks and more profit than either alone, and most search clicks still go to organic results, per a 2026 digital marketing roundup. The smarter play is to use Google Ads to learn which keywords convert, then feed that into your content, your local SEO, and your Google Business Profile. AI search adds a third layer: ChatGPT and Google's AI Overviews answer questions directly, and being cited there needs answer-first content, schema markup, and the work of AI search optimisation. A strong agency treats paid search, organic, and AI visibility as one search programme. Our notes on choosing an AI search agency, ranking on AI search, and the ChatGPT knowledge cutoff go deeper.
Want Google Ads run by a team that would pass its own audit? UnderCurrent manages paid search as part of one search programme: conversion tracking built first, your account owned by you, and fees tied to leads you can verify. See how we run Google Ads.
Related Reading
- SEO for small business in Australia , the organic side of the same search results.
- Why tradies don't get Google reviews , cheap local trust that paid ads cannot buy.
- Choosing an AI search agency in Australia , the AI-search version of this vetting guide.
- How to rank a buyers agency on AI search , a worked example of AI visibility.
- AI training for Australian small businesses , build the skill in-house instead.
- What the ChatGPT knowledge cutoff means , why AI search timing matters.
- What is a Google Business Profile? , the free listing every local business needs.
- Industry guides , search playbooks by trade and sector.
Frequently Asked Questions
How long does it take to see results from Google Ads? Expect early clicks and leads within days of launch, but real performance takes longer. Automated bidding needs roughly 30 conversions a month before it can settle, so most accounts take two to three months to find their feet. Judge progress on a 30-day rolling window, not week to week. If an agency promises strong results in the first fortnight, treat that as a sales line rather than a forecast.
How much should a small business spend on Google Ads to start? A single-location service business in one metro usually needs a starting ad budget in the low thousands of dollars a month to gather enough data to improve. You can technically start near AUD 10 a day, but thin budgets struggle to feed automated bidding the conversions it needs. Remember this is your media budget paid to Google, separate from any agency management fee charged on top.
Do I need a separate landing page for Google Ads? Yes, in almost every case. Sending paid clicks to your homepage forces visitors to hunt for what the ad promised, and conversion rates fall. A dedicated landing page with one message, one offer, and one call to action consistently converts better, and HubSpot's marketing statistics show a tailored landing page measurably lifts PPC results. It also raises your Quality Score.
What is a good Quality Score in Google Ads? Quality Score runs from 1 to 10 and rates expected click-through rate, ad relevance, and landing page experience. Aim for an account average of 7 or above on your main keywords. A keyword with a low Quality Score pays considerably more per click than a strong one for the same position, so it acts as a direct discount on every click. A good agency reports it and works on it.
Should I hire a Google Ads agency or a freelancer? A freelancer can be cheaper and works fine for a small, single-platform account, as long as they set up conversion tracking properly and you own the account. An agency brings backup if one person is sick or leaves, plus broader skills across landing pages, analytics, and reporting. Whichever you choose, the ownership and tracking questions matter more than the label on the invoice.
What is the difference between Google Ads and Performance Max? Standard Search campaigns show text ads to people actively searching, and you can see exactly which keywords convert. Performance Max is an automated campaign type that spends across Search, Display, YouTube, Gmail and Maps at once, with far less visibility into where results come from. Performance Max suits accounts with 50 or more conversions a month; newer accounts should prove Search first.