An Instant Form is the lead form that opens inside Facebook or Instagram when someone taps a lead ad, letting them send their details to a business without leaving the app. Many of the fields arrive already filled in from the person’s profile, so submitting can take a couple of taps.
How an Instant Form works
You create the form in Ads Manager when you build a campaign with the Leads objective and choose Instant forms as the conversion location. This is the form behind lead ads, and it has several parts:
- An optional intro with a headline, image and short description of the offer.
- Questions. Standard contact fields such as name, email and phone are prefilled from the person’s account. Custom questions, such as multiple choice, short answer or conditional questions, let you qualify the enquiry.
- A privacy policy link Which Meta requires, plus optional custom disclaimers and consent checkboxes.
- A completion screen with a message and a button, for example to visit your site or call you.
Meta offers different form types. A volume-focused form makes submission as quick as possible. A higher intent form adds a review screen where the person checks their details before sending, which slows submissions but usually filters out accidental ones.
Leads are stored in Meta and can be downloaded from Meta Business Suite or sent automatically to a CRM through Meta’s integrations, an automation tool or a webhook. At the time of writing (October 2026), Meta only keeps leads available to download for 90 days, so a form left unconnected can quietly lose enquiries.
Why it matters
On a phone, every extra screen loses people. Instant Forms remove the landing page altogether, so they usually produce more enquiries at a lower cost per lead than sending traffic to a website form. For UK service businesses that rely on calls and quotes, such as tradespeople, clinics, tutors and solicitors, that can make Meta viable where it otherwise would not be.
The trade-off is quality. Prefilled details make it easy to submit without much thought, and some people forget they did. Cheap leads that never answer the phone are not cheap.
The form also collects personal data, so the law applies. Under UK GDPR you are the controller of those details: your privacy notice must explain who you are, why you collect the data and how long you keep it. If you want to send marketing emails or texts afterwards, PECR generally requires clear consent, so use a separate, optional checkbox rather than making marketing a condition of the enquiry.
Common mistakes
- Downloading leads by hand once a week, so people wait days for a reply and some leads pass the 90-day limit.
- Relying only on prefilled fields with no question that qualifies the enquiry.
- Bundling marketing consent into the submission, or linking a generic privacy policy that does not mention the form.
- Choosing the volume-focused form type when the sales team cannot cope with low-intent enquiries.
- A completion screen that says “thanks” and nothing else, when it could tell people what happens next.
How to act on it
Decide on the form type by what your sales process can handle: if you call every lead personally, a higher intent form is usually worth the smaller volume. Add one or two qualifying questions, such as the postcode (to screen out areas you do not cover) or the timescale for the work. Keep the form short beyond that.
Connect the form to your CRM or inbox so each lead arrives within minutes, and aim to call while the person still remembers submitting it. Then feed the outcome back: marking which leads became customers lets Meta optimise for quality rather than raw volume.
Set the privacy wording, consent checkbox and completion screen before launch. Building forms, connecting them and tuning lead quality is the core of the Facebook lead ads service I run.