Published July 15th, 2026
Updated July 15th, 2026
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Google Ads can be a powerful way to advertise your business and managing your budget is an essential element of having a successful campaign.
However, there are common mistakes that we see which can harm how successful your advertising is.
In this article we will identify common mistakes businesses make with their Google Ads and the impact it has on their budget.
Before creating and launching a Google Ads campaign, you need to understand who your audience is before you can reach them.
By understanding your audience’s behaviour and considering their motivations and pain points, you can build your campaign around this including messaging, targeting, landing pages and keywords.
Without audience research, the effectiveness of your campaign may be reduced which can result in:
Having the initial understanding of your audience before creating campaigns will help them be more relevant, therefore maximising your Google Ads budget and improving conversion opportunities.
As mentioned above, targeting keywords your audience aren’t actually searching for can drain your budget on irrelevant clicks. Instead of attracting potential customers, your ads may appear for people who have no intention of converting. This is why customer insight and thorough keyword research are essential.
Understanding how your audience searches helps you identify the most effective keywords to target, increasing the likelihood of attracting high-quality traffic and generating valuable conversions. It also helps you identify negative keywords – search terms you want to exclude from your campaigns to prevent your ads appearing for irrelevant searches.
Ultimately, effective keyword targeting improves the quality of your traffic and it also improves your Google Ads Quality Score. If users regularly click on your ads but leave the landing page without taking action, Google interprets this as a sign that your ad isn’t meeting their expectations.
A strong Quality Score reflects the relevance of your keywords, ad copy and landing page experience. Higher scores can improve your ad rankings, increase visibility and reduce your cost per click (CPC), helping you achieve better results from your advertising budget.
Not tracking your Google Ads campaign means you won’t have accurate conversion rate data. If you are missing this key data, it removes the ability to optimise your campaign or results in spending money on unprofitable clicks.
Conversion data is key for Google’s Smart Bidding algorithm so, if you aren’t measuring the data, the algorithm doesn’t recognise which clicks are generating leads or sales. This can cause the bidding to optimise low-quality clicks and result in an increased CPA (Cost Per Acquisition).
Without tracking you won’t be able to work out your ROI (Return on Investment) because you have no information to calculate if the campaign is profitable or how well it worked.
Losing this information also means you are losing out to your competitors; they will outbid you and continue to grow whilst you are unsure of the success of your campaigns.
When choosing your budget for Google Ads, you should be able to justify why you are spending that amount.
Some businesses select a number they think will work for them but have no justification to why which can result in an over or underfunded budget.
An overfunded budget can have multiple issues:
However, an underfunded budget can also be equally problematic:
If you need help calculating what your budget should be, take a look at our Google Ads Budget Planner. This will show you what to expect from your budget and what kind of approach to take that will help you achieve your goals.
Alternatively, if you would like support reviewing your Google Ads budget, get in touch with us today. Give us a call on 01473 934050 or send an email to [email protected].