How to Find Wasted Spend in Your Google Ads Account

Most Google Ads accounts waste 20-40% of their budget on clicks that will never convert. Not because the advertisers are careless, but because waste hides in places that aren’t obvious from surface-level metrics.

This guide walks through a systematic process for finding and eliminating wasted spend. Follow it step by step, and you’ll likely find thousands of euros that can be redirected to what actually works.

Step 1: Search Term Audit

The search term report is where most waste hides. It shows you the actual queries people typed before clicking your ads — which are often different from the keywords you’re targeting.

How to Find It

In Google Ads: Campaigns → Keywords → Search Terms. Set the date range to the last 90 days for meaningful data.

What to Look For

Irrelevant queries: Keywords that have nothing to do with your product or service. Common culprits:

• Informational queries that won’t convert (“what is [topic]”, “how does [thing] work”)
• Job-seeker queries (“[your keyword] jobs”, “[your keyword] salary”, “[your keyword] career”)
• DIY queries (“how to [do your service] yourself”, “free [your product]”)
• Competitor brand name misspellings that accidentally match
• Geographic mismatches (queries for cities you don’t serve)

High-spend, zero-conversion queries: Sort search terms by cost, then look for terms with significant spend but zero conversions. Any query that’s spent more than 2x your target CPA without converting deserves immediate review.

Action Items

1. Add negative keywords for clearly irrelevant terms
2. Create a shared negative keyword list for universal exclusions (jobs, free, DIY, etc.)
3. Tighten match types on keywords generating too many irrelevant queries
4. Review weekly — search term waste is ongoing, not a one-time fix

Step 2: Placement Audit (Display and Performance Max)

If you’re running Display campaigns or Performance Max, your ads appear on websites, apps, and YouTube channels that you may never have seen. Many of these placements are low-quality.

Where to Check

For Display campaigns: Placements report under Campaigns → Content → Where ads showed.

For Performance Max: Insights → Placement report (limited visibility, but check what’s available).

Common Waste Spots

Action Items

1. Exclude mobile app categories unless you have evidence they convert
2. Review top placements by spend and exclude non-performers
3. Create placement exclusion lists and apply them to all Display campaigns
4. For Performance Max: Accept that placement control is limited, but monitor the insights report for obvious waste

Step 3: Geographic Waste

Ads often run in locations that don’t generate business value. This is especially common in DACH markets where you might serve Germany but not Austria, or Berlin but not rural areas.

How to Check

Reports → Predefined Reports → Geographic → User Location Report. This shows where users are physically located (not just what they searched for).

Common Issues

• “Presence or interest” targeting (the default) shows ads to people who show interest in your target location, even if they’re in a different country
• Low-converting regions consuming budget that could go to high-converting ones
• International traffic on campaigns meant for domestic audiences

Action Items

1. Switch to “Presence” targeting if you only want users physically in your target area
2. Exclude countries and regions that generate clicks but not conversions
3. Adjust bids by region — reduce spend in low-converting areas, increase in high-performing ones

Step 4: Device Performance

Desktop, mobile, and tablet often perform very differently. If you’re not checking device-level data, you’re likely overspending on one of them.

How to Check

Campaigns → Devices. Review conversion rate, CPA, and ROAS by device type.

What You’ll Typically Find

• Mobile has high click volume but lower conversion rates for B2B and complex purchases
• Desktop converts better for lead gen forms and high-consideration purchases
• Tablet performance is often poor due to small audience size and different user behavior

Action Items

1. Apply device bid adjustments based on actual conversion data
2. Consider -100% bid on devices with zero conversions over a meaningful period (60+ days of data)
3. Ensure landing pages are mobile-optimized before reducing mobile bids — poor mobile experience might be the problem, not mobile users

Step 5: Time-of-Day and Day-of-Week Analysis

Not all hours and days perform equally. Spending the same amount at 3 AM as at 10 AM rarely makes sense.

How to Check

Reports → Predefined Reports → Time → Hour of Day / Day of Week. Look at conversion rate and CPA by hour and day.

Common Patterns

• B2B: Conversions cluster during business hours (Monday-Friday, 8 AM-6 PM)
• E-commerce: Evenings and weekends often perform well
• Service businesses: Often aligned with working hours
• Lead gen: Form fills happen during work hours; phone calls stop after hours

Action Items

1. Create an ad schedule that reduces or pauses bids during consistently poor hours
2. Increase bids during peak hours to capture more of the highest-converting traffic
3. Review at least 90 days of data before making schedule changes — short periods can be misleading

Step 6: Audience Waste

Remarketing lists and audience targeting can waste budget if not maintained and refined.

Common Audience Waste

• Remarketing to converted customers who won’t buy again (unless repeat purchase makes sense)
• In-market audiences that don’t convert but consume significant budget
• Overly broad audience targeting that dilutes performance
• Audience segments too small to generate meaningful data

Action Items

1. Exclude recent converters from remarketing (unless cross-sell or repeat purchase is the goal)
2. Review audience performance monthly — remove segments that don’t contribute
3. Use observation mode before targeting mode to collect data without limiting reach
4. Set appropriate membership durations — 90-day remarketing lists for products with long consideration periods, 30-day for impulse purchases

Step 7: Bidding Strategy Audit

Incorrect bidding strategies waste money silently. They don’t create obvious errors — they just produce suboptimal results over time.

Red Flags

• Target CPA set too aggressively: Leads to bid suppression and lost traffic
• Maximize Clicks on conversion-focused campaigns: Drives cheap, low-quality clicks
• Manual bidding without regular adjustments: Set-and-forget manual bids become outdated quickly
• Smart Bidding without enough data: Fewer than 30 conversions/month makes optimization unreliable

Action Items

1. Match bid strategy to campaign goal — awareness (Maximize Impressions), traffic (Maximize Clicks), conversions (Target CPA or Maximize Conversions), revenue (Target ROAS)
2. Verify data sufficiency — automated bidding needs volume to work
3. Review Smart Bidding reports — is the strategy hitting targets, or consistently missing?

Step 8: Ad Extension and Asset Review

Missing or outdated ad extensions reduce your ad’s competitiveness and can increase CPC.

Quick Checks

• Are sitelinks current and clickable? (Test every link)
• Are callout extensions relevant to current offers?
• Are structured snippets aligned with your actual services?
• Are you using all applicable extension types?

Waste Impact

Poor extensions don’t waste spend directly, but they reduce Quality Score and CTR, which increases your CPC — an indirect form of waste that compounds over time.

Calculating Your Total Waste

After completing all eight steps, sum up the potential savings:

These ranges are based on typical accounts we audit. Your mileage will vary depending on how actively the account has been managed.

What to Do With Recovered Budget

Once you’ve eliminated waste, you have a choice:

1. Reduce total spend — improve profitability without losing conversions
2. Reinvest in proven campaigns — scale what works with the recovered budget
3. Test new channels — use the savings to experiment with Meta Ads, LinkedIn Ads, or emerging platforms

The right answer depends on your business goals. Accounts in growth mode should reinvest. Accounts focused on profitability should consider reducing total spend.

For a more comprehensive audit framework, see our complete Google Ads audit checklist.

Want a professional assessment of wasted spend in your Google Ads account? We offer a free audit that identifies specific waste areas and quantifies potential savings. Request your audit.