Click fraud in Google Ads
What click fraud and invalid clicks are, the signs to look for in your data, what Google already filters, and practical ways to protect your budget.
2 min read · updated 24 September 2026
Every click on a search ad costs money, whether or not a real customer made it. Click fraud is clicks made with no intention of buying: by competitors, by bots, or by people paid to click. For a small advertiser with a daily budget, a few dozen wasted clicks can use up the day's spend before real customers search.
Who clicks without buying
- Competitors clicking your ads to drain your budget so theirs show instead.
- Bots crawling search results, sometimes for data, sometimes deliberately.
- Click farms paid to click, often on display and partner-network placements.
- Accidental repeat clicks from real people, which are not malicious but still cost you.
What Google already does
Google filters what it classes as invalid clicks, and most of them are never charged. You can see the count in Google Ads by adding the "Invalid clicks" column. Automated filtering is good at obvious patterns; it is weaker against a determined person who changes IP address, and it cannot know your business's normal pattern of customers.
Signs something is wrong
- A sudden rise in clicks without a matching rise in calls or enquiries.
- Many clicks from the same IP address or network in a short time.
- Clicks that leave within a second or two, again and again.
- Click-through rate far above normal on one campaign or keyword.
- Clicks from areas you do not serve, despite location targeting.
- Spend running out unusually early in the day.
Protecting your budget
- Tighten targeting. Target only the locations you serve, and use "presence" rather than "presence or interest" for location options.
- Review search terms weekly and add irrelevant ones as negative keywords.
- Be careful with partner networks. Search partners and display placements are where much low-quality traffic comes from; test with and without them.
- Schedule ads for the hours customers actually call.
- Exclude abusive IP addresses. Google Ads lets each campaign exclude a list of IP addresses from seeing ads.
- Record every click. You cannot block what you cannot see. Tracking each paid click with its IP address, device and behaviour shows patterns Google's summary numbers hide.
The IP address problem
Excluding IP addresses works against repeat clickers on a fixed connection. It does not work against anyone on a mobile network or a VPN, whose address changes constantly, and every address stays under any sensible "too many clicks" threshold. Recognising the same browser behind many addresses, by its fingerprint, catches that pattern. Click fraud protection does both, and shows you the evidence before anything is blocked.
Do not block on a hunch
An office, a school or a mobile carrier can put many real people behind one IP address. Blocking it can shut out genuine customers. Look at the evidence (number of clicks, time between them, behaviour on the page) before excluding anyone.
Claiming refunds
If you find invalid activity Google did not filter, you can report it through the Google Ads help centre with the dates, campaigns and evidence. Detailed click records make a claim much stronger.