Click-Through Rate (CTR)

Click-through rate (CTR) is the percentage of impressions that result in a click. Marketers use it in paid search and organic search, as well as in display, affiliate placements, and email. In iGaming acquisition, CTR shows how relevant an ad is to its audience. It says nothing about registrations, first-time deposits (FTDs), or acquisition cost, so it has to be read next to them.

What is click-through rate (CTR)?

CTR tells you how often people who saw a link, ad, or search result clicked on it. Specifically, it is built from two numbers:

• Clicks: recorded interactions with a link or ad element.
• Impressions: recorded displays of that element, as the reporting platform defines them.

CTR describes the relationship between impressions and clicks. However, it is not the share of unique people who clicked. For example, one person can see an ad five times and click once, and the platform then records five impressions and one click.

The metric appears in Google Ads, Google Search Console, display ad servers, affiliate dashboards, and email tools. Each platform decides what counts as an impression and which interactions count as clicks. As a result, the same campaign can show different CTRs in two reports.

CTR formula

CTR (%) = (Number of Clicks ÷ Number of Impressions) × 100

Clicks are the interactions the platform counts for the metric you selected. Similarly, impressions are the times the ad or link was displayed and counted under the same platform’s rules. Google Ads describes CTR as a ratio that shows “how often people who see your ad or free product listing end up clicking it,” calculated as clicks ÷ impressions (Google Ads Help).

For example, a campaign generates 250 clicks from 10,000 impressions.

CTR = (250 ÷ 10,000) × 100 = 2.5%

The campaign earned 2.5 clicks per 100 recorded impressions. However, that does not mean 2.5% of unique users clicked.

How to calculate CTR: step-by-step example

A sportsbook runs a campaign for one market. Over 14 days it records 50,000 impressions and 1,250 clicks.

CTR = 1,250 ÷ 50,000 × 100 = 2.5%

The calculation takes five steps:

1. Select the campaign and the reporting period.
2. Identify the number of eligible clicks.
3. Identify the impression count for the same campaign and period.
4. Divide clicks by impressions.
5. Multiply by 100.

Metric	Value
Impressions	50,000
Clicks	1,250
CTR	2.5%

The tricky part, however, is step 2. Ad platforms separate link clicks, all clicks, unique clicks, and other interactions such as expanding an ad or tapping a profile name. “All clicks” will give a higher CTR than “link clicks” for the same ad. So pick the numerator that matches the question, write it down, and use it every time you report.

Different types of CTR in digital marketing

The formula stays the same across channels, but what counts as an impression changes.

• Paid search CTR is clicks on search ads divided by ad impressions. In general, it reflects how well the keyword, the ad copy, and the searcher’s intent match.
• Organic search CTR is clicks from unpaid search results divided by impressions recorded by the search platform. In Google Search Console, an impression is counted when a link to your site appears in results, and CTR is clicks ÷ impressions (Search Console Help). In addition, ranking position and the query have a strong effect on it.
• Display advertising CTR is clicks on banners or other display units divided by recorded impressions. However, a served impression is not always a seen one. The Media Rating Council’s baseline counts a display impression as viewable when at least 50% of its pixels are in view for one continuous second.
• Affiliate CTR is clicks on tracked affiliate links or placements divided by eligible impressions. Many affiliate setups track clicks but not impressions, so this CTR exists only where impression tracking does.
• Email CTR is clicks divided by delivered emails. Some tools count total clicks, while others count unique clickers. Click-to-open rate (CTOR), however, is a different metric: it divides clicks by opens, not by deliveries.

How the channels compare

Channel	What CTR measures	Important consideration
Paid search	Ad engagement	Keyword and ad relevance
Organic search	Search-result engagement	Query intent and ranking
Display	Creative and placement interaction	Viewability and invalid traffic
Affiliate	Engagement with tracked placements	Impression tracking quality
Email	Engagement with links	Delivered emails vs opens

As a result, comparing CTR across these channels usually misleads. After all, impression definitions, user intent, formats, and counting rules all differ. A person who searches for a sportsbook brand is closer to clicking than a person scrolling past a banner.

Casino operators also measure CTR inside their own product, for example how often a game tile in the lobby is clicked after it appears. However, that is a product metric with its own logic, covered in the Blask guide to lobby CTR.

What is a good click-through rate?

No CTR is good everywhere. Instead, the number depends on:

• Advertising channel.
• Search intent.
• Placement and format.
• Audience targeting.
• Geographic market.
• Device.
• Brand recognition.
• Campaign objective.
• Regulatory and advertising restrictions.

Paid search, organic search, display, and email measure different behavior, so one benchmark cannot cover all four.

Published benchmarks and gambling ad rules

Published benchmarks, therefore, need careful reading. LocaliQ’s search advertising benchmarks, last updated June 1, 2026, report a 6.64% average CTR across Google Ads and Microsoft Ads campaigns from “thousands” of its customers, with Arts & Entertainment highest at 12.75% (LocaliQ).

The data covers 20+ industries. However, gambling is not one of them, and the sample is LocaliQ and WordStream clients. In other words, an entertainment average is not an iGaming benchmark.

Gambling advertising also runs under its own rules. Google requires certification per country, allows gambling ads only in approved countries, and in the US bars sports betting and online casino advertisers from targeting users under 21 or outside licensed states (Google Ads policy). Consequently, narrower targeting changes the audience and with it the CTR.

Example: two campaigns, two contexts

Campaign A is a branded search campaign for a well-known sportsbook and shows 9% CTR. In contrast, Campaign B is a display campaign for a new casino brand and shows 0.6%.

However, calling A fifteen times better is wrong. That is because the two campaigns reach people at different stages of intent, in different formats. Instead, a useful comparison is between B and its own previous months, or between two creatives inside B.

CTR vs conversion rate: what’s the difference?

CTR measures the step from impression to click. Conversion rate, on the other hand, measures the step from a defined starting group to a target action. In iGaming, that action is often a registration or a first-time deposit.

Metric	CTR	Conversion rate
Measures	Impressions that generate clicks	Eligible users/interactions that produce a conversion
Formula	Clicks ÷ Impressions × 100	Conversions ÷ Defined denominator × 100
Primary use	Traffic acquisition diagnostics	Funnel effectiveness
Example	Ad click	First-time deposit

Two campaigns run in the same market with the same budget.

Metric	Campaign A	Campaign B
Impressions	20,000	20,000
Clicks	1,000	600
CTR	5%	3%
FTDs	20	30
Click-to-FTD conversion rate	2%	5%

Campaign A wins on CTR. However, Campaign B brings 50% more first-time depositors from the same number of impressions. So if the team had optimized for CTR alone, it would have moved budget to the weaker campaign.

💡 Key point: A higher CTR does not mean better acquisition. Instead, it means more clicks per impression. Whether those clicks turn into players is a separate question.

CTR vs Click-to-Registration Rate in iGaming

Although they belong to the same acquisition funnel, CTR and Click-to-Reg measure two different steps. CTR shows how well an ad gets people to click. Click-to-Reg, in contrast, shows how well that traffic turns into registrations.

Three metrics follow one another:

• CTR = Clicks ÷ Impressions × 100
• Click-to-Reg = Registrations ÷ Clicks × 100
• Reg-to-FTD = First-time depositors ÷ Registrations × 100

100,000 impressions → 2% CTR → 2,000 clicks → 10% Click-to-Reg → 200 registrations → 20% Reg-to-FTD → 40 first-time depositors.

	CTR	Click-to-Reg
Full name	Click-Through Rate	Click-to-Registration Rate
Formula	Clicks ÷ Impressions × 100	Registrations ÷ Clicks × 100
Funnel step	Impression → click	Click → registration
Main owners	Performance marketing, creatives, media buying	Landing page, UX, registration flow, traffic quality

Click-to-Reg is a type of conversion rate where the target action is a registration and the denominator is clicks. However, teams calculate it differently. Some divide by landing page visits or unique clicks instead of all ad clicks. Therefore, those versions should not be compared directly.

Metric	Campaign A	Campaign B
Impressions	100,000	100,000
Clicks	5,000	2,000
CTR	5%	2%
Registrations	100	300
Click-to-Reg	2%	15%
FTDs	10	60

Campaign A has a strong CTR but converts few clicks into accounts. The ad may attract the wrong audience, promise something the landing page does not deliver, or send people into a registration flow that breaks.

Campaign B, on the other hand, gets fewer clicks and six times more first-time depositors. So treat CTR and Click-to-Reg as separate metrics, because they answer different questions.

📚 Read more: How to improve first deposit conversion in online casino

What affects click-through rate?

CTR moves when the ad, the placement, or the audience changes.

• Message relevance: The closer the ad copy is to what the audience expects or searched for, the more likely a click.
• Creative quality: Readability, layout, clarity, and fit with the placement. For example, a banner built for desktop can be unreadable on a phone.
• Ad placement: Position on the search results page, location on a website, and the ad inventory itself. For instance, top-of-page search ads and above-the-fold banners get seen more often.
• Audience targeting: Needs, demographics, location, and intent differ between segments. A broad audience usually produces a lower CTR than a narrow one.
• Brand recognition: People click names they know. As a result, a familiar operator brand can lift CTR without any change in the creative.
• Device and format: Mobile and desktop users see different layouts and behave differently.
• Ad fatigue: Engagement can drop after people see the same creative many times.

In short, a CTR change is not always about the creative. A new placement mix or a shift in who sees the ad can move the number while the ad stays the same.

How to improve CTR in iGaming campaigns

1. Improve keyword and audience relevance: Match the message to user intent and to the target market. A sportsbook ad for a local football league will usually work better in that league’s country than a generic betting message.
2. Test creative variations: Compare headlines, copy, layouts, and calls to action in controlled experiments. Change one element at a time so you know what caused the result.
3. Segment campaign performance: Break CTR down by GEO, device, placement, campaign type, and audience. Otherwise, an average can hide one strong segment and one failing one.
4. Keep the landing page consistent with the ad: The destination should deliver what the ad promised. Landing page work mostly affects post-click behavior, such as Click-to-Reg. Knowing what the landing page can deliver also keeps ad promises honest.
5. Monitor invalid traffic and measurement quality: Check for suspicious activity, bot traffic, and duplicate interactions. Also review how each platform filters invalid clicks. After all, inflated clicks raise CTR and lower everything after it.
6. Evaluate downstream outcomes: Compare every CTR change with registrations, FTDs, CPA, and player lifetime value (LTV). For instance, a creative that lifts CTR and lowers FTDs is not an improvement.

📚 Read more: How to calculate true CAC in iGaming: formula & hidden costs

Do not chase clicks with misleading ads, exaggerated bonus claims, or aggressive gambling messaging. Such ads can raise CTR while breaking advertising rules and attracting players the operator should not target. In addition, every change has to fit local advertising restrictions and responsible gambling requirements.

How to analyze CTR alongside iGaming market demand

CTR comes from ad, search, and analytics platforms. It shows how a campaign performed, but it does not show what was happening in the market around it.

Blask Index measures iGaming demand for brands and markets based on processed search signals. However, Blask does not measure advertising CTR, campaign clicks, or individual conversions. It shows whether interest in a market or brand was rising or falling while the campaign ran.

📚 Read more: How Blask measures, calculates, and presents iGaming market intelligence

Campaign analytics	Blask market intelligence
CTR	Blask Index
Impressions and clicks	Market demand trends
Campaign conversion rate	Brand demand dynamics
CPA and FTD	Competitive acquisition context
Creative performance	Competitive market positioning

For example, market demand did not move the same way across Europe over the past year.

Say a marketing manager runs the same generic search campaign in the UK and Spain and sees CTR fall in both compared with last September. In the UK, market demand fell 13.6% over that year, so a weaker market is one hypothesis to test. In Spain, demand was flat, so the team should look at its own campaign first: creatives, bids, placements, and competitors.

Germany shows another trap. Overall demand nearly doubled, but licensed brands did not share in that growth.

💡 Key point: None of these numbers explains a specific campaign’s CTR. Instead, they help the team decide which explanations to test.

For brand-level context, Brand’s Accumulated Power (BAP) shows a brand’s share of accumulated market demand, and Acquisition Power Score (APS) gives an AI-estimated monthly customer acquisition benchmark.

CTR analysis: practical iGaming workflow

An online casino runs two campaigns in the same market. Combined CTR falls from 3.0% to 2.2%, a drop of 0.8 percentage points or about 27% in relative terms. The team then works through six steps.

• Step 1 — Verify tracking: Confirm that click and impression definitions did not change. For instance, a switch from “all clicks” to “link clicks,” a new tag, or a platform reporting update can move CTR overnight.
• Step 2 — Segment the data: Compare CTR by device, audience, placement, and creative. Then find out whether the drop is everywhere or in one place.
• Step 3 — Investigate changes: List campaign edits, targeting changes, auction conditions, and new ad inventory. For example, a new placement with many low-intent impressions can lower CTR without hurting results.
• Step 4 — Review conversion quality: Check Click-to-Reg, registrations, FTDs, and CPA for the same period.
• Step 5 — Compare market context: Look at market demand and brand interest in Blask Index for the same weeks. However, a demand drop is a hypothesis to test, not a conclusion.
• Step 6 — Test and evaluate: Run a controlled experiment, for example a creative test or a placement exclusion, and measure the whole funnel, not CTR alone.

In short, a falling CTR is not always a business problem. For example, if the team cut broad placements and kept high-intent ones, CTR can fall while Click-to-Reg and FTDs rise.

Common CTR measurement mistakes

1. Comparing CTR across platforms without matching definitions: One platform’s click is not always another’s.
2. Mixing total clicks and unique clicks: For example, five clicks from one person and one click each from five people look the same in a total count.
3. Ignoring impression eligibility and viewability: Served impressions that nobody could see lower CTR and say nothing about the creative.
4. Drawing conclusions from small samples: For instance, ten clicks on 300 impressions is not a trend.
5. Optimizing CTR without measuring conversion quality: More clicks can mean more of the wrong visitors.
6. Assuming higher CTR automatically lowers CPA: Instead, CPA depends on what the clicks do after landing.
7. Treating organic CTR as equal to paid CTR: They measure different results pages, positions, and intent.

Overall, reliable analysis needs consistent definitions and comparison groups that are actually comparable.

Frequently asked questions

Definition, calculation, and benchmarks

What does CTR stand for?

CTR stands for click-through rate. In other words, it is the percentage of impressions that result in a click. Marketers use it to see how often people who saw an ad, a search result, or a link chose to click on it. It appears in paid search, organic search, display, affiliate, and email reports, and each platform defines impressions and clicks in its own way.

How do you calculate CTR?

Divide clicks by impressions and multiply by 100. If an ad gets 300 clicks from 12,000 impressions, CTR is 300 ÷ 12,000 × 100 = 2.5%. In addition, use the click and impression counts from the same campaign, the same period, and the same reporting definition. Otherwise, mixing “all clicks” with “link clicks” or two date ranges gives a number that does not describe anything real.

Is a 2% CTR good?

It depends on the channel and the context. For example, in branded search, 2% would usually be low. In display advertising, however, it would often be high. Audience, placement, device, market, and brand recognition all change what to expect. Therefore, the most useful comparison is with the same campaign’s history, or with a similar campaign in the same channel and market, using the same definitions.

CTR and campaign performance

What is the difference between CTR and conversion rate?

CTR measures how many impressions turn into clicks. Conversion rate measures how many people or interactions in a defined group complete a target action, such as a registration or first deposit. In other words, CTR describes the ad’s ability to attract attention, while conversion rate describes what the traffic does next. As a result, a campaign can have a high CTR and a low conversion rate at the same time.

Why is CTR important in digital marketing?

CTR is one of the earliest signals of whether an ad, a search snippet, or an email matches its audience. It also reacts quickly to changes in copy, creative, targeting, and placement, which makes it useful for testing. In paid search it can also affect how the platform evaluates an ad. It describes only the first step of the funnel, though, so it works best next to conversion metrics.

Does a higher CTR mean better campaign performance?

Not necessarily, because a higher CTR only means more clicks per impression. If those clicks come from people who do not register or deposit, the campaign can deliver fewer players at a higher cost. Instead, in iGaming, judge a campaign by Click-to-Reg, FTDs, CPA, and player value, and use CTR to explain the first step of the result.

Conclusion

Click-through rate measures how often an impression becomes a click. It is simple to calculate and quick to react, which makes it useful for testing ads, creatives, and placements.

On its own, however, it does not show whether a campaign brings players. So read it next to Click-to-Reg, conversion rate, FTDs, and acquisition cost. And because campaigns run inside markets that rise and fall, iGaming teams get the clearest picture when they combine reliable campaign measurement with an understanding of market demand.

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