Negative Keywords Google Ads Australia: Wasted Spend Audit
[H1: Negative Keywords Google Ads Australia: Wasted Spend Audit]
[H2: What do negative keywords actually do for your account?]
Every click you pay for should have a path to revenue. When your ads show for searches that will never convert, job seekers clicking your "plumber Sydney" ad, DIYers triggering your "electrician Melbourne" campaign, students researching "marketing agency salaries", you burn budget with zero return. Negative keywords tell Google not to show your ads for those terms. WordStream analysed over fifteen thousand accounts and found that accounts with at least one negative keyword achieved three times higher conversion rates than those without. The mechanism is straightforward: fewer irrelevant impressions mean higher click-through rates, tighter ad group relevance, and budget concentrated on searches that actually signal commercial intent.
[H2: How do you audit your search terms report in five steps?]
Start by opening the Keywords tab in Google Ads and selecting Search terms. Set the date range to the past ninety days; anything shorter misses patterns, anything longer dilutes current intent with outdated data. First, sort by cost descending. The top ten percent of spend often reveals the largest waste. Look for terms with high spend and zero conversions. Second, filter for clicks greater than five and conversion rate below one percent. These are your bleeders. Third, segment by match type. Broad match terms almost always need negative keyword companions. Fourth, check for geographic mismatches, searches from outside your service area that Google matched anyway. Fifth, export the list and group by theme: job-related (careers, jobs, salary, training), DIY (how to, DIY, tutorial, guide), research (what is, definition, vs, comparison), and competitor names you do not want to bid against.
[H2: Which match type should you use?]
Broad match negatives block any search containing the word in any order. Phrase match negatives block the exact phrase with words before or after. Exact match negatives block only that precise query. Most Australian SMBs should default to phrase match for theme-based negatives; "jobs" as a phrase match negative catches "plumbing jobs Sydney" and "electrician jobs Melbourne" without blocking "emergency plumber jobs" if that were somehow relevant. Reserve broad match for single words that never belong in your funnel: "free", "cheap", "DIY", "careers". Use exact match sparingly, only for specific queries you have identified as waste in the search terms report.
[H2: What does Australian search behaviour mean for your lists?]
Australians search differently than Americans. We use "near me" less and suburb names more: "plumber Bondi", "electrician Parramatta", "accountant Perth CBD". We spell "optimise" with an s and "specialise" with an s. Our negative lists need to reflect that. Add Australian suburb names outside your service radius. Add Australian spelling variants of your negative themes: "optimisation" alongside "optimization" if you sell SEO services. Consider state-specific terms: "tradie" instead of "contractor", "ABN" instead of "tax ID". The ACCC reminds advertisers that misleading representations in ads breach consumer law, so negative keywords that prevent your ad showing for "government grant" or "free government funding" when you offer neither also protect compliance.
[H2: How often should you review and expand your lists?]
Monthly is the minimum for accounts spending under five thousand dollars. Fortnightly for accounts above that threshold. Weekly during campaign launches or seasonal peaks. Each review should add twenty to fifty new negatives drawn from the search terms report. The process compounds; every irrelevant search you block today is budget redirected to relevant searches tomorrow. Schedule it as a recurring calendar task, not an afterthought.
[H2: Common questions]
[H3: Can negative keywords hurt my reach if I add too many?]
Only if you negative exact match terms that actually convert. Phrase and broad match negatives on genuinely irrelevant themes, jobs, free, DIY, salaries, have no downside. They simply stop waste.
[H3: Should I use shared negative keyword lists across campaigns?]
Yes. Create a master list for account-level themes (jobs, free, DIY, careers, training, salaries, internship, volunteer) and apply it to every campaign. Then add campaign-specific negatives for product or service nuances.
[H3: What if I do not have enough search term data yet?]
Start with the universal Australian negative list: free, cheap, DIY, how to, tutorial, guide, jobs, careers, salary, internship, volunteer, training, course, certification, degree, university, TAFE, government, grant, funding, subsidy, review, complaint, scam, fraud, login, portal, dashboard, app, download, template, sample, example, definition, meaning, vs, comparison, alternative, competitor. Remove any that conflict with your actual offering.
Closing: Your search terms report is the most honest feedback loop in your account. It tells you exactly what the market thinks you sell. Treat every negative keyword you add as a decision to stop paying for the wrong audience and start investing in the right one.
Internal links used:
