What is Sticky CTA?
A call-to-action element (typically a button or bar) that stays visible as the user scrolls. Especially powerful on mobile.
Also known as: sticky call-to-action, fixed CTA bar
A sticky CTA is a button, bar, or block that remains visible as the user scrolls the page, instead of scrolling off-screen with the rest of the content. For local-service businesses, the most impactful version is a mobile sticky bar at the bottom of the screen with two buttons: "Call now" and "Get a quote."
The conversion lift from a well-implemented mobile sticky CTA is typically 30-60% for local service businesses. The reason: most visitors don't scroll back to the top to find the phone number when they're ready to act. Putting the CTA where their thumb already is removes the friction.
What to avoid: sticky CTAs that obscure content, multiple competing sticky elements (chat widget + cookie banner + sticky CTA + back-to-top), or sticky CTAs that don't accommodate the device's safe-area inset (iPhone home bar).
Mobile is 60-80% of local-service traffic. A sticky CTA on mobile often doubles the calls/form fills from mobile visitors — one of the highest-leverage UX changes in the industry.