How to write a clear ad call to action

What should a call to action tell someone they can do next?

Choose calls to action that set accurate expectations about the next page rather than relying on vague urgency.

Name the next action

A useful CTA describes the next step: “View the size guide” if the click opens a size guide, or “Explore the colours” if it opens a product collection. “Claim yours now” is confusing if no claimable offer exists. Write the destination first, then the button or closing line.

Use a CTA to close the gap between the creative and the page, not to rescue a vague ad. A bag advertisement that focuses on laptop fit could close with “Check the dimensions”. The first section of the destination should actually contain the measurements.

• Does the linked page deliver the promised action?
• Is the offer, price or availability current?
• Can the CTA be understood without reading the rest of the ad?

Review urgency and qualifications

If you say “Ends tonight”, confirm the actual end time and the location where the offer applies. Avoid manufacturing scarcity or hiding important limitations behind a button. CAP’s misleading advertising rules require material information not to be omitted or presented ambiguously, so review the complete ad and landing page together.

Test CTAs that express different real tasks, such as “See how it works” versus “View the details”. Avoid reading a higher click rate as proof the better task was served; examine whether visitors reached the intended information.

Accurate versus misleading CTA destinations

Illustrative worked example, not a measured customer result. Replace assumptions with checked facts.

Common questions

Should every ad say “Shop now”?

No. Use the platform button that best fits the destination and write supporting copy that makes the next step accurate and clear.