An account can spend R50,000 a month and still leak a third of that budget on clicks that were never going to convert. A google ads account audit for wasted spend is the process of finding exactly where, and it takes about two to three hours if you know where to look.
- A google ads account audit for wasted spend in 2026 starts with the Search Terms report, not the campaign dashboard: most leaks hide in queries you never approved.
- Auto-applied recommendations inside Google Ads waste 10-15% of budget on SA accounts running Smart Bidding without a tROAS or tCPA floor: turn them off before auditing anything else.
- Broad match without negative keyword hygiene is the single biggest spend leak in 2026: check match type spread before touching bids.
- Conversion tracking gaps, duplicate leads and untracked phone calls feed bad signals to Smart Bidding: fix tracking first or the rest of the audit is wasted time.
Why this matters
Most South African business owners check Google Ads once a week, glance at spend versus leads, and move on. That's how R15,000 a month disappears into search terms like "free plumber jobs" or "google ads course" without anyone noticing for six months.
Google's algorithms are built to spend your daily budget, not to protect your margin. Smart Bidding will happily chase volume if you haven't told it what a good lead actually costs. An audit forces you to separate real demand from noise, and in 2026, with average CPCs still climbing across most SA verticals, that gap between "spend" and "revenue" is the difference between an account that pays for itself and one that quietly bleeds cash.
This isn't theory. Accounts we've pulled apart on first contact almost always show the same three faults: no conversion value tracking, negative keyword lists that haven't been touched in a year, and campaigns still running Google's default settings from the day they were built.
What you'll need
- Admin or standard access to the Google Ads account (not just a shared report link)
- Access to Google Analytics 4 or whatever platform tracks post-click behaviour
- 90 days of account history minimum, ideally 12 months if the account has been running that long
- A spreadsheet to log findings as you go, so nothing gets fixed and forgotten
- Your actual cost-per-lead or cost-per-sale target in Rand, written down before you start, not guessed on the fly
If you don't have a hard number for what a lead is worth to your business, stop and calculate that first. Everything downstream depends on it.
The steps
1. Pull the Search Terms report for the last 90 days
This is where the audit actually starts, not the campaign overview. Go to Campaigns, then Insights and reports, then Search terms, and set the date range to 90 days.
Sort by cost, descending. You're looking for search terms that have spent money without producing a conversion. In our experience auditing SA accounts, this single report usually accounts for 15-25% of wasted spend on its own.
Common outcome: you'll find terms with zero commercial intent ("jobs", "free", "course", "salary") that have quietly eaten R2,000 to R8,000 over three months. Flag every one for exclusion.
2. Check match type distribution across every ad group
Open the Keywords view and add a Match Type column. Calculate what percentage of spend sits in broad match versus phrase and exact.
Broad match isn't automatically bad in 2026, Smart Bidding uses it well when signals are strong, but broad match paired with a young account or thin conversion data is a fast way to burn budget on irrelevant queries. If more than 60% of spend sits in broad match and the account has fewer than 30 conversions a month, that's a mismatch.
Expected outcome: a clear picture of whether your match type strategy fits your conversion volume. Common mistake here is assuming match type is set once and forgotten, when it should be reviewed every quarter.
3. Audit conversion tracking accuracy, not just conversion count
Open Conversions under Goals and check each conversion action individually. Look at the count value and cross-reference it against your CRM or actual sales log for the same period.
This is the step most audits skip, and it's the one that matters most. If Google Ads shows 140 conversions but your CRM shows 95 actual leads, you've got double-counting, likely from a form firing twice or a phone call tracked as both a click-to-call and a form submission. Smart Bidding optimises toward whatever number you feed it, inflated or not.
Common mistake: treating "conversions" in the dashboard as gospel without ever checking it against a real business number.
4. Review Auto-applied recommendations and Optimisation Score settings
Go to Recommendations in the left menu and check the Auto-apply settings (the gear icon at the top right). Google auto-applies certain recommendations by default, including bid adjustments and keyword additions, unless you've turned this off.
Turn off auto-apply for anything touching budget, bids, or keywords. Optimisation Score is a vanity metric built to encourage more spend, not more profit, chasing it past 80% typically means accepting broader targeting and higher budgets than your account needs.
5. Check budget pacing against actual conversion volume by campaign
Open each campaign and compare daily budget against the number of conversions it's actually producing. A campaign spending R800 a day but converting twice a week is running on hope, not data.
For Smart Bidding strategies (Maximise Conversions, Target CPA, Target ROAS) to work properly, Google recommends roughly 15-30 conversions per month per campaign as a rough floor. Below that, the algorithm is guessing. Consolidate under-performing campaigns rather than letting five thin campaigns each starve for data.
6. Audit ad schedule and location settings against your actual trading hours and service area
Check Ad Schedule under Settings. If you're a plumber that doesn't answer calls after 6pm but your ads run 24/7, you're paying for clicks nobody follows up on.
Check Locations too. Default settings often include "presence or interest", meaning someone in Cape Town searching about Johannesburg shows your Johannesburg ad. For local service businesses this alone can waste 10% of budget on people outside your delivery radius.
7. Cross-check landing pages against the promise in the ad
Click through every active ad exactly as a customer would. Check that the landing page loads fast, matches the ad copy, and has a working form or click-to-call.
A broken form or a page that times out on mobile means every click before you noticed was wasted, regardless of how well-targeted the keyword was. This is a five-minute check most accounts never get.
Troubleshooting
Optimisation Score keeps dropping after you make changes. That's expected and correct. The score rewards broader targeting and higher budgets, not profitability. Ignore it once you've deliberately tightened the account.
Conversions dropped right after you fixed tracking. This usually means the old number was inflated by duplicate counting. Give Smart Bidding 10-14 days to relearn against the accurate number before judging performance.
Search Terms report shows almost no irrelevant queries. Either your negative keyword list is already solid, or your match types are too tight and you're missing volume. Check impression share lost to budget under the Auction Insights tab to see which it is.
Cost per lead looks fine but sales aren't following. The leak may be downstream of Google Ads entirely, in lead follow-up speed or sales process, not the account itself. Worth checking before you cut budget further.
Smart Bidding won't hit your target CPA. Either your target is unrealistic for the account's current conversion volume, or there's a tracking issue feeding it bad data. Revisit step 3 before adjusting the target.
Tools and resources
- Google Ads' own Search Terms and Auction Insights reports (free, built in)
- Google Analytics 4 for cross-checking conversion data against actual site behaviour
- A CRM or sales log to validate lead counts against what Google Ads reports
- If you'd rather have this done properly the first time, see how google ads management for small businesses works, or look at guidance on reducing your cost per click once the audit is done
What to do next
Once the audit is finished, the real work is rebuilding the account structure around clean signals, not patching individual campaigns. If lead volume rather than spend is the actual bottleneck, read the guide on generating leads with Google Ads in South Africa for the structural changes that follow an audit like this one.
FAQ
How often should I audit my Google Ads account for wasted spend?
Run a full audit every quarter and check the Search Terms report every two weeks in between. Accounts with rapid budget changes or new campaigns need monthly reviews in 2026, since Smart Bidding shifts spend fast once it detects a new pattern.
What percentage of Google Ads spend is typically wasted?
Accounts we’ve audited in South Africa commonly show 20-40% of spend going to non-converting search terms, wrong locations, or broken tracking. The figure drops sharply once negative keywords and conversion tracking are cleaned up.
Is Smart Bidding better than manual CPC for avoiding wasted spend?
Smart Bidding outperforms manual CPC once an account has 15-30 conversions a month and accurate tracking feeding it. Below that volume, or with inflated conversion counts, Smart Bidding will scale the waste rather than fix it.
Should I turn off Google’s auto-applied recommendations?
Yes, for anything touching budget, bids or keyword additions. Auto-apply settings let Google adjust your account without approval, and they’re built to increase Optimisation Score, not your return on ad spend.
How much does a Google Ads audit cost in South Africa?
A self-run audit using the steps above costs nothing but two to three hours of time. Agency-led audits vary by account size and complexity, and are usually worth it once monthly spend exceeds R20,000.
Can broad match keywords waste ad spend?
Broad match wastes spend specifically when paired with thin conversion data or weak negative keyword lists. On accounts with strong conversion signals, broad match under Smart Bidding often performs as well as phrase or exact match.
Why does my Google Ads conversion count not match my actual leads?
This almost always comes down to duplicate tracking, where a form submission and a phone call from the same person both count as separate conversions. Check each conversion action individually against your CRM to find the mismatch.
What’s the fastest way to find wasted Google Ads spend?
Pull the Search Terms report for the last 90 days, sort by cost, and look for queries with spend but no conversions. This one report typically surfaces 15-25% of total waste in under fifteen minutes.
One last thing
The account setting most owners never check is Ad Schedule combined with call tracking hours. If your ads run around the clock but your team stops answering the phone at 5pm, every after-hours call click is paid for and lost. Fixing that one setting alone has recovered real budget on accounts we've reviewed, before touching a single bid or keyword.
Related guides
- How to reduce Google Ads cost per click in South Africa
- How to generate leads with Google Ads in South Africa
- Best Google Ads agencies in South Africa
- Google Ads agency for small businesses in South Africa
