It's the #1 question every tradie asks before they touch Google Ads: "How much is this going to cost me?"
Here's the short answer: most Australian tradies should start with $500–$1,000 per month, scale to $1,500–$3,000 once they're converting leads profitably, and expect to pay between $15–$50 per click depending on their trade and location.
But that's just the starting point. The real question isn't how much you spend — it's how much you make back. This guide walks you through the real numbers, the budget tiers, and the exact calculation to work out the right spend for your business.
The Real Cost of Google Ads for Tradies
Google Ads runs on a pay-per-click (PPC) model. You set a daily budget, choose your keywords, and pay each time someone clicks your ad. The cost of that click — your cost per click (CPC) — varies significantly by trade, location, and competition.
In Australia, trade keywords are among the most competitive on Google. Why? Because the intent is sky-high. Someone searching "emergency plumber Sydney" is ready to book right now — and every plumber in the city is fighting for that click.
Several factors push your CPC up or down: location (metro Sydney and Melbourne cost more than regional), competition level (more advertisers means higher bids), time of day, and critically — your Quality Score. Google rewards relevant, well-structured ads with lower CPCs. A better ad pays less per click than a lazy competitor running the same keyword.
Quality Score can cut your CPC by 20–50%. A well-written ad that matches the search term and lands on a fast, relevant page pays less per click than a competitor with a low score. This is why campaign setup matters as much as the budget itself.
Higher CPC doesn't mean worse ROI. Builders and roofers pay more per click, but their average job value is also much higher — $5,000 to $50,000+. A $35 click that converts into a $20,000 renovation is extraordinary value. The CPC is only one part of the equation; what matters is cost per lead and cost per job.
Budget Tiers: What You Get at Each Level
Not all budgets deliver the same results. Here's what different monthly spend levels actually buy you in terms of clicks, leads, and jobs — based on a $25 average CPC across trades.
| What You Get | Starter — $500/mo | Growth — $1,000–1,500/mo | Aggressive — $2,000+/mo |
|---|---|---|---|
| Clicks per month | ~20 | ~40–60 | ~80–120+ |
| Estimated leads (25% conv.) | 3–5 | 10–15 | 20–30+ |
| Typical jobs booked | 1–2 | 4–7 | 8–15+ |
| Campaign types possible | 1 campaign, 2–3 ad groups | 2–3 campaigns, full keyword coverage | Full funnel: search + retargeting |
| Data for optimisation | Slow — 6–8 weeks to learn | Good — 3–4 weeks to learn | Fast — meaningful data in 2 weeks |
| Best for | Testing the channel, low-risk start | Consistent lead flow, scaling phase | Dominating your local market |
Important: These numbers assume a well-optimised campaign and a converting website. If your landing page is slow, unclear, or has no call to action, your conversion rate drops to near zero regardless of budget. Read our guide on tradie websites that actually convert.
How to Calculate Your Ideal Budget
Forget arbitrary numbers. The right Google Ads budget is a business calculation — not a gut feel. Work backwards from what you need and what you can afford to pay to acquire a customer.
The formula in plain English
Say you're a plumber with an average job value of $800. You want 5 extra jobs per month. You close 50% of leads and your landing page converts 20% of clicks to enquiries.
- 5 jobs needed → at 50% close rate = 10 qualified leads required
- 10 leads → at 20% click-to-lead rate = 50 clicks required
- 50 clicks × $25 CPC = $1,250/month budget
- 5 jobs × $800 = $4,000 revenue → $2,750 profit after ad spend
That is a 3.2× return on ad spend. Completely viable. And if you improve your close rate or landing page, those numbers improve without increasing spend one dollar.
Set a maximum cost per acquisition (CPA) before you start. A good rule of thumb is 10–15% of average job value. For a $1,500 job, you would accept up to $150–$225 per new customer acquired. This number guides your bids, your budget, and when to pause a campaign that is not performing.
The ROI That Matters
Let's make this concrete with a real worked example — the kind of numbers we see from well-managed trade campaigns in competitive Australian markets.
Result: $1,000 in → $5,200 out. That is a 5.2× return on ad spend — $4,200 in profit before overheads. Scale to $2,000/month and you are looking at $10,400 in revenue. When the campaign is dialled in, more spend equals more jobs, predictably.
The key phrase is "when the campaign is dialled in." A poorly managed campaign can burn $1,000/month with almost zero return — wrong keywords, weak ad copy, no negative keyword list, a landing page that does not convert. The budget is not the problem; the strategy is. This is why who manages your account matters just as much as what you spend.
Common Budget Mistakes Tradies Make
After auditing dozens of trade Google Ads accounts, the same mistakes show up repeatedly. These are the ones that cost tradies the most money.
Mistake #1 — Starting too small and quitting too early. Running $200/month for two weeks, getting zero leads, then concluding "Google Ads doesn't work for my trade." That is not enough data. You need a minimum of 50–100 clicks to make any meaningful judgement. At $25 CPC, that is $1,250–$2,500. Give the channel a proper runway before writing it off.
Mistake #2 — Targeting too broadly. Bidding on "plumber" or "electrician" instead of "emergency plumber Sydney CBD" or "licensed electrician Parramatta." Broad keywords attract researchers, students, and competitors — not buyers. High-intent, location-specific keywords are where jobs are won. Every untargeted click is wasted budget.
Mistake #3 — Sending traffic to your homepage. Your landing page needs to match the search term exactly, load in under three seconds, and have a clear headline, social proof, and a prominent phone number. A $2,000/month budget is wasted if visitors land on a generic page with no clear next step. Learn the website features that convert trade leads.
Mistake #4 — Not tracking conversions. Running Google Ads without call tracking or form tracking means flying blind. You have no idea which keywords are generating leads and which are burning cash. Set up conversion tracking before your first dollar is spent — it is the single most important technical step in any campaign.
- No negative keyword list — paying for clicks from people searching "plumber jobs", "plumber supplies", or "how to become an electrician"
- Running ads 24/7 when your target customers primarily search 7am–7pm weekdays
- Using broad match only instead of phrase and exact match for high-value service keywords
- Never reviewing search terms — the actual queries triggering your ads reveal exactly where budget is being wasted
- Changing settings constantly — Google's algorithm needs 4–6 weeks to learn; weekly interference resets the process
When to Increase (or Decrease) Your Budget
Your budget is not set-and-forget. It should respond to what the data tells you. Here are the clear signals for scaling up or pulling back.
Signals to increase your budget
- Your cost per lead is below your target CPA — you are acquiring customers profitably and have headroom to grow
- You are running out of daily budget before the day ends — you are leaving qualified clicks on the table
- Your close rate is strong (50%+) and you have the capacity to take on more work
- Your impression share is below 50% — you are missing half the searches happening in your service area
- You have had two consecutive months of positive ROI — the campaign has proven itself and is ready to scale
Signals to decrease or pause your budget
- Your cost per lead is 3× your target CPA and has not improved after optimisation over four weeks
- You are fully booked and genuinely cannot take on more work — pause and save the budget
- Your close rate has dropped suddenly — something in the sales process or market has shifted and needs investigating first
- A seasonal slowdown is expected and historical data shows low conversion rates in this period
Google Ads rewards consistency. Constantly pausing and restarting disrupts the algorithm's learning phase and kills performance. If you need to reduce spend, lower the daily budget gradually — never flip it off entirely unless you are genuinely booked out for weeks ahead.
For a deeper walkthrough of setting up Google Ads campaigns for your trade business, read our full guide: Google Ads for Tradies: How to Get More Jobs Without Wasting Money. And if you are weighing Ads against organic search, our guide on SEO for tradies covers how the two channels work best together.
Frequently Asked Questions
Most Australian tradies should start with $500–$1,000 per month to test the channel, then scale to $1,500–$3,000 once they are converting leads profitably. The right number depends on your cost per click, how many leads you need, and your average job value. Use the formula: (jobs wanted ÷ close rate ÷ conversion rate) × CPC = your monthly budget.
Trade keywords in Australia typically cost $15–$50 per click. Builders and roofers sit at the higher end ($30–$40+) due to high job values. Landscapers and painters tend to be lower ($15–$22). Metro areas cost more than regional, and emergency or urgent service keywords cost significantly more than general trade terms.
$500/month is enough to test whether Google Ads work for your trade and location. At $25 average CPC that is roughly 20 clicks per month — enough to get 3–5 leads and evaluate quality. It is not enough to scale aggressively, but it is a valid low-risk starting point. Commit to at least 60 days before drawing conclusions.
You will typically see your first leads within the first week. However, allow 4–8 weeks for the campaign to properly optimise. Google's algorithm needs data — roughly 50 conversions — to learn who converts best. Rushing changes too early resets the learning phase and is one of the most common mistakes tradies make.