12 Google Ads Mistakes Small Businesses Make (and How to Fix Them)

By the Oski Marketing team · Updated 5 October 2026 · 6 min read

The most common Google Ads mistakes small businesses make are running broad keywords without negatives, having no conversion tracking, leaving the Display Network and search partners switched on, targeting people who are merely interested in your area, and sending every click to the homepage. Each one wastes budget quietly, and each takes minutes to fix.

Why do small business Google Ads campaigns waste money?

Most waste comes from default settings and from campaigns nobody checks after launch. Google Ads is built to spend your budget, and several defaults favour reach over precision. A small business with a modest budget needs the opposite: fewer, better clicks from people nearby who want exactly what you sell. The twelve mistakes below are the ones we see most when reviewing accounts, grouped by where they happen.

Which targeting mistakes waste the most budget?

1. Broad match keywords with no negatives and no conversion data. Google's matching options page says broad match can show ads on searches that do not contain the meaning of your keywords, and Google recommends pairing it with Smart Bidding. Smart Bidding needs conversion data to work. Fix: use phrase and exact match until tracking is reliable, then test broad match in a controlled way.

2. Negative keywords that miss plurals and synonyms. Google's negative keywords page confirms negatives do not match close variants, so excluding "job" does not exclude "jobs". Fix: add singular, plural and common alternatives for every negative.

3. Never opening the search terms report. The search terms report shows the actual searches that triggered your ads. Fix: check it weekly and add irrelevant terms as negatives.

4. "Presence or interest" location targeting. This is the default, and Google's location options page explains it reaches people who have shown interest in your area as well as people in it. Fix: for a local service, switch to "Presence" so ads go to people likely to be in, or regularly in, your area.

Which settings mistakes are easy to miss?

5. Search partners and the Display Network left on. Google's Search Network page says search partners are included by default in new Search campaigns, and Display Expansion can spend Search budget on the Display Network. Fix: untick both at the start, then test them separately once you can measure results.

6. Auto-applied recommendations switched on. Google's auto-apply page lists recommendation types that can apply automatically, including adding broad match keywords and expanding to search partners. Fix: turn off the types you have not chosen deliberately and review recommendations by hand.

7. Ads running when nobody can answer. Ads with a call button at 11pm, when the phone goes to a full voicemail, pay for calls you will not win. Fix: schedule call assets for your real answering hours (Google's call assets page shows how) and set an ad schedule for the campaign.

What tracking mistakes stop you knowing what works?

8. No conversion tracking at all. Without it, you are judging ads on clicks. Google's conversion tracking page explains that conversions are how you tell Google what is valuable, like a phone call or a form. Fix: track calls from ads, calls from your website and form submissions before you raise budgets.

9. Counting the wrong things as conversions. Page views or button clicks set as primary conversions make the account look brilliant while the phone stays quiet. Google warns that misconfiguring primary and secondary conversion actions can stop Smart Bidding from working effectively. Fix: make only real enquiries primary, and set a sensible minimum call length.

10. Never checking Google's numbers against your diary. Even good tracking misses things. Fix: once a month, compare conversions in Google Ads with the enquiries and jobs you actually logged.

Which ad and landing page mistakes cost you calls?

11. Sending every click to the homepage. A search for "fuse board replacement" should land on a page about fuse board replacement. Landing page experience is one of the three parts of Quality Score, described by Google as how relevant and useful your landing page is to people who click your ad. Fix: one page per main service, with the phone number at the top and the same words as the ad. Our guide to homepage copy that gets calls applies to these pages too.

12. Generic ad copy. "Quality service at competitive prices" could be anyone. Fix: put the service and area in the headline, add a specific reason to call (arrival window, fixed call-out fee, written quotes), and include only claims you can prove.

How do you audit your own Google Ads account?

Work through this checklist in one sitting:

• Network settings: search partners and Display Network unticked unless deliberately tested
• Location option set to Presence, area matches where you work
• Match types: mostly phrase and exact unless tracking supports broad
• Negative list includes plurals, jobs, DIY and training terms
• Search terms report reviewed in the last seven days
• Auto-applied recommendations reviewed and limited
• Call assets scheduled for real answering hours
• Calls and forms tracked as primary conversions, nothing trivial counted
• Each ad group links to a matching service page

If more than three items fail, fix those before spending another pound on clicks. For a full setup walk-through, see our Google Ads guide for tradespeople.

What should you ask if someone else manages your ads?

Ask to see the search terms report, the conversion settings and the location option, and check that the account is owned by your business, not by the person managing it. If they cannot or will not show you, treat it as a warning sign; our list of marketing agency red flags covers others. Oski Marketing manages Google Ads from £600 a month plus ad spend paid directly to Google, on a rolling contract, and the account stays yours.

What to do this week

• Open your campaign network settings and untick search partners and the Display Network.
• Change the location option to Presence.
• Read the last 30 days of search terms and add every irrelevant one as a negative, with plurals.
• Check which actions are set as primary conversions and remove anything that is not a real enquiry.
• Turn off auto-applied recommendations you did not choose.