LinkedIn Lead Gen Forms: setup, lead quality and follow-up

A LinkedIn Lead Gen Form costs nothing extra: you pay for the clicks or impressions of your ad ^[1], and LinkedIn cites an average completion rate of 13% ^[2]. Steer on quality with three to four profile fields, one or two multiple-choice questions and hidden fields ^[3][4]. Connect your CRM and send a test lead before you go live ^[5].

Whether you run campaigns yourself or work with a LinkedIn Ads agency, the difference between leads sales follows up and names that never buy lies almost entirely in those settings. All limits below come from the LinkedIn Help Center, as it stood on 27 September 2026.

Steer on cost per qualified lead

A form that fills itself in lowers the threshold. That brings in plenty of leads, but also names who submit something with one click without reading properly. So the question isn't what a lead costs, but what a lead costs that sales wants to follow up.

Take €3,000 per month and Merkelijkheid's Western European median values for lead campaigns: a CPM of €89.57 and a click-through rate of 0.40% ^[6][7]. That gives about 134 clicks, for two versions of the same form.

Form B delivers fewer and more expensive leads, but a qualified lead costs half as much. What a lead may cost you is worked back from your customer value, as in what advertising on LinkedIn costs.

Choose fields and questions that sales uses

Profile fields. You can choose up to 12, but LinkedIn itself recommends three to four: fewer fields will probably bring more submissions ^[4][3]. For B2B, first name, last name, work email, company and job title are usually enough. Only ask for a phone number if sales really calls.

Custom questions. A maximum of three, as multiple choice or single-line text, with 100 characters per field ^[4]. This is your most important quality lever. Choose multiple choice, because according to LinkedIn, a single open-answer question can already lower the submission rate by 3 to 4% ^[2].

Ask about what determines who sales calls first, such as the timeline, the role in the decision or the size of the company. Drop any question whose answer doesn't change the follow-up.

Hidden fields. Up to 20 per form, invisible to the member, with static or dynamic values such as the name or ID of the campaign, ad set and ad ^[4][8]. They travel along to your CRM, so you can later see which ad produced customers ^[8].

Language. An English form fits any ad set, while a form in another language has to match the language of the ad set ^[4]. So you create a Dutch form for your Dutch ad set and a French one for your French ad set. What that means for your reach is covered in LinkedIn targeting for B2B.

All limits, example questions in Dutch and French and a go-live checklist are in the briefing you fill in together with sales.

Sort out privacy and consent

Every form needs a URL to a page that covers only your privacy policy, plus privacy text of up to 2,000 characters ^[9][4]. Consent checkboxes are optional: up to five, of up to 500 characters, and you decide whether they are required ^[4][9]. If you also want to send leads your newsletter, ask for a separate checkbox for that.

LinkedIn doesn't keep your leads indefinitely. The Help Center says up to one year ^[10], while a LinkedIn blog from August 2025 still says 90 days ^[2]. So connect or download straight away.

Get every lead to sales immediately

You have three options ^[11]. A direct integration with your CRM or marketing automation platform, such as Salesforce Sales Cloud or HubSpot, and a partner from the LinkedIn Marketing Partner Directory work automatically. A CSV you download and upload yourself leaves leads waiting.

Always test before you go live. In Campaign Manager, choose "Send Test Lead" on the form and check that the lead arrives in your CRM, with every field in the right place ^[5].

After submission, LinkedIn shows a thank-you screen of up to 300 characters, with a button to a page of your choice ^[1][4]. Say there how and when you will get in touch, and then do it ^[3]. If you promise a guide, put the link on the thank-you screen: LinkedIn doesn't send that content itself ^[3].

Give your form a second life

People who opened your form but didn't submit it can be reached again later with a Lead Gen Form audience: a lookback of 30 to 365 days, at least 300 members ^[12]. Refresh your form regularly too. According to LinkedIn, only 10% of forms still get leads after their first 66 days ^[2].

Torn between a form and a landing page? LinkedIn sets its 13% against 4.02% for landing pages, based on a study by Unbounce ^[2]. A landing page does win if your offer needs explaining; what a good page costs is covered in what a website costs.

Want to know how your forms score? The free LinkedIn Ads audit looks at Lead Gen Forms, targeting, audience size, conversions, creatives and bidding strategy.