LinkedIn Event Ads: How B2B SaaS Fills Webinars With the Right Accounts

Most webinar promotions on LinkedIn have a hidden problem. Registration numbers look great, but many sign-ups come from students, job seekers, competitors, or people at companies that will never buy. Sales ends up with a long list of attendees but few real prospects.

LinkedIn Event Ads help B2B SaaS companies promote webinars to specific audiences based on factors like company, job function, and seniority. This makes it easier to reach the people a webinar is actually meant for, rather than relying on broad promotion to attract registrations.

But getting the right people to sign up is only the first step. The webinar topic, ad creative, promotion timing, and follow-up all influence whether those registrations lead to meaningful sales conversations and pipeline.

Let’s discuss LinkedIn Event Ads in more detail: understand how they work, the objectives behind them, formats, and much more. 

Quick answer: LinkedIn event ads are sponsored posts that promote a LinkedIn Event in the feed. They show the event name, date, banner, and a register button, plus how many people (and which of your connections) are attending. B2B SaaS teams use them to fill webinars, virtual summits, and in-person events with people from the accounts sales actually wants.

What are LinkedIn event ads?

LinkedIn event ads are a Sponsored Content format that promotes a LinkedIn Event to a targeted audience. The ad pulls details straight from your event page, including the banner image, title, date, time, and format. Members can register with a click. The ad shows social proof, such as the number of attendees and connections who are going.

They differ from a normal single image ad in three ways:

• The event is the destination. The ad points to a LinkedIn Event (or, in some cases, an external event page) instead of a blog post or landing page.
• Registration is built in. Members can register on LinkedIn without leaving the feed.
• The ad changes with the event. The same ad drives sign-ups before the event, live viewers during it, and replay views after it, if the event is hosted on LinkedIn.

Explore different types of LinkedIn Ads for B2B SaaS.

How do LinkedIn event ads work?

LinkedIn Event Ads support every stage of an event, from promotion and registration to post-event engagement. According to LinkedIn's Event Ads API documentation, the on-platform events support three stages:

[table]
Stage | What members see | Your goal
Before the event | Event details and a register button | Registrations from target accounts
During the event | The live stream right in the feed (LinkedIn Live events) | Live viewers and show rate
After the event | The replay | On-demand views and a warm retargeting pool
[/table]


A webinar landing page ad stops being useful the moment the event starts. A LinkedIn Live event ad keeps working as a replay ad.

What types of events can you promote?

You can promote online events, LinkedIn Live streams, and in-person events. LinkedIn's API documentation lists four event types:

[table]
Event type | Where it happens | Registration | Event page on LinkedIn
LinkedIn Live | Streamed on LinkedIn | On LinkedIn | Yes
External online event | Zoom, ON24, Goldcast, or your own platform | On LinkedIn, then members join via your link | Yes
In-person event | A physical venue | On LinkedIn | Yes
Off-platform event ad | Any external event | On your own website | No, ad-only
[/table]


There are two limitations when promoting LinkedIn events. 

• LinkedIn Audio events are not supported in event ads.
• Event ads do not run on the LinkedIn Audience Network. They only show on LinkedIn itself.

The off-platform event ad is worth noting for SaaS teams. It lets you promote an event that lives on your own registration page without creating a public LinkedIn Event. The event is hidden from organic LinkedIn surfaces, and the ad always sends people to your URL. Use it when you need registrations to flow through your own form and marketing automation.

LinkedIn event ad specs

LinkedIn event ads pull their image and details from the event page, so most specs are set when you create the event, not the ad.

[table]
Element | Spec
Event banner image | 4:1 ratio, pulled from the event page (1776 x 444 px is the common size)
Event name | Up to 255 characters
Introductory text | Up to 600 characters; about the first 150 show before "see more"
Call to action | Register (or Learn more for external links)
Pre-registration image | Optional custom image shown to people who have not registered yet
Destination URL | Must start with http or https; up to 2,000 characters
[/table]


LinkedIn's ads guide confirms the 4:1 image and 600-character intro text limits. Keep key text out of the outer edges of the banner, since it can be cropped on mobile.

Which campaign objectives work with LinkedIn event ads?

LinkedIn event ads work with the Brand Awareness, Website Visits, and Engagement objectives, and LinkedIn's current API documentation also lists Lead Generation. Pick the objective based on what you want LinkedIn to optimize for, not on the ad format.

[table]
Objective | LinkedIn optimizes for | Best for | Watch out for
Brand Awareness | Impressions (CPM) | Early buzz with a tight target-account list | Few direct registrations
Engagement | Clicks and interactions | Registrations on LinkedIn events, social proof | Clicks from people outside your ICP if targeting is loose
Website Visits | Landing page clicks | Off-platform events and your own registration page | Drop-off between click and form
Lead Generation | Form submits | Capturing full contact data with a pre-filled form | Check that it is available in your account
[/table]


For most B2B SaaS webinars, Engagement is the simplest starting point for a LinkedIn-hosted event, and Website Visits is the right choice when registration must happen on your own page.

If Lead Generation is available for event ads in your account, test it, because it gives you a clean lead record for your CRM.

LinkedIn event ads vs other formats for webinars

Event ads are not the only way to promote a webinar on LinkedIn. Many teams use a single image ad with a lead gen form instead. Here is how the main options compare:

[table]
Format | How people register | Strengths | Weaknesses | Best use
Event ad (LinkedIn event) | One click on LinkedIn | Social proof, live and replay views in the feed, retargetable registrants | Less control over registration fields; data must be exported or synced | LinkedIn Live and community-style events
Event ad (off-platform) | Your own landing page | Data goes straight into your stack | Extra click, lower conversion rate | Events run on Zoom, ON24, or similar with strict data needs
Single image + Lead Gen Form | Pre-filled form on LinkedIn | Clean lead data, custom questions | No attendee count or live feed view | Lead-focused webinars where qualification matters
Document ad | Gated preview of a slide deck | Shows the content upfront | Not built for a date-based event | Promoting the recording or slides after the event
Conversation or Message ad | Personal invite in the inbox | High-touch feel for senior buyers | Costly per send, inbox limits | VIP invites for named accounts
Thought Leader Ad | Boosted post from a speaker | Trust and personal reach | Indirect path to register | Building pre-event interest from the host's profile
[/table]


The best programs combine them. A common mix: event ads for reach and registrations, a Thought Leader Ad from the speaker for trust, and a document ad with the slides after the event.

Should you use event ads or lead gen forms for webinars?

Use event ads when the event is hosted on LinkedIn or when social proof and live viewing matter. Use a single image ad with a lead gen form when you need custom qualifying questions and clean CRM data on day one. If you cannot decide, run both to the same audience for two weeks and compare cost per qualified registrant, not cost per registrant.

How much do LinkedIn event ads cost?

LinkedIn event ads use the same auction as other Sponsored Content, so you pay by impressions (CPM) or clicks (CPC) based on your objective, bid, and audience. There is no extra fee for the event format. Narrow B2B audiences, like a list of 500 target accounts with senior job functions, usually cost more per impression than broad targeting.

The better question is what a target-account registrant costs. Use this simple formula:

Cost per target-account registrant = total event ad spend/registrants from your target account list

Lets say you spend $6,000 and get 300 registrants. That looks like $20 each. But only 90 come from your target accounts. Your real cost is about $67 per target-account registrant. That is the number to compare against other channels, such as paid search or sponsored newsletters.

To set a budget, work backward from the number of target-account attendees you need, your expected show rate, and the share of attendees who usually turn into meetings. 

Our Google Ads ROI calculator for SaaS uses the same work-backward logic if you want to test the math.

How to create LinkedIn event ads (step by step)

To create a LinkedIn event ad, first create the event from your LinkedIn Company Page, then build a campaign in Campaign Manager, choose the Event ad format, and select that event. The whole setup takes about 20 minutes once your event page is ready.

Part 1: Create the LinkedIn Event

1. Go to your Company Page as a Super Admin or Content admin and click Create, then Event.
2. Choose the event format: LinkedIn Live, external online event (with your Zoom, ON24, or other link), or in person.
3. Add a 4:1 banner image. Show the topic and the speakers' faces. Avoid tiny text.
4. Write a clear event name. Lead with the outcome, such as "How 3 CFOs Cut SaaS Spend 20% in 90 Days", not "Q3 Webinar Series Ep. 4".
5. Set the date and time zone. Pick a time that works for your main target region.
6. Add a registration form if you want to collect lead data from LinkedIn registrants, and add your privacy policy link.
7. Add speakers so the event shows up on their profiles and in their networks.
8. Publish the event and check how it looks on mobile.

Part 2: Build the event ad campaign

1. Open Campaign Manager and create a new campaign in the right ad account. The event organizer must be the Company Page tied to that ad account.
2. Choose an objective: Engagement for LinkedIn registrations, Website Visits for off-platform events, or Lead Generation if available.
3. Set your audience. Turn off Audience Expansion for target-account campaigns.
4. Select the Event ad format.
5. Set budget and schedule. Plan to run for three to four weeks before the event.
6. Create the ad: pick your event, write the intro text, and add an optional pre-registration image.
7. Add conversion tracking with the Insight Tag or Conversions API if registration happens on your website.
8. Launch and check delivery after 24 to 48 hours.

LinkedIn's help article on creating event ads in Campaign Manager has screenshots of the current menus, which LinkedIn updates often.

How to target the right accounts with LinkedIn event ads

The best way to fill a webinar with the right accounts is to start from a matched company list of your target accounts, then add job function and seniority filters that match the buying committee. Do not start with job titles alone. Titles reach the right roles at the wrong companies.

Here is a targeting stack that works for B2B SaaS:

[table]
Layer | Setting | Why
1. Accounts | Matched company list of target accounts from sales or your ABM tool | Limits spend to companies you can sell to
2. Roles | Job functions tied to your buying committee, such as Finance, IT, Operations | Reaches more roles than exact titles
3. Seniority | Manager, Director, VP, CXO (adjust to your deal) | Removes interns and entry-level roles
4. Location | Regions where you sell and can run sales follow-up | Avoids cheap but useless regions
5. Exclusions | Current customers (if a prospect event), competitors, employees, existing registrants | Cuts waste and avoids paying twice
[/table]


If you need help building that account list, our guide to LinkedIn matched audiences covers company list uploads and match rates.

How to reach the whole buying committee

Most B2B deals involve several people, from the economic buyer to the end user and IT. A webinar is one of the few touchpoints that can reach all of them at once. Plan your event and audience around the buying committee, not one persona:

• Split campaigns by role. Run one campaign for economic buyers and another for practitioners. Each gets intro text that speaks to its own pain.
• Match speakers to roles. A CFO guest will pull finance leaders. A practitioner guest will pull end users.
• Track coverage by account. The win is three people from one target account, not 30 people from 30 random companies.

Can you use predictive audiences or retargeting for event ads?

Yes. You can target event ads to any matched audience, including website visitors, video viewers, lead gen form openers, and company lists. Predictive audiences built from your best customers can also help you find new accounts that look likely to engage. For warm audiences, retargeting past webinar attendees and high-intent page visitors usually gives the cheapest qualified registrations.

Should you turn on Audience Expansion?

No, not for target-account campaigns. Audience Expansion shows your ad to people outside your chosen audience, which defeats the point of an ABM event. Leave it on only for broad awareness events where volume matters more than fit.

When should you start promoting a webinar with LinkedIn event ads?

Start LinkedIn event ads three to four weeks before the event, and plan to spend the largest share of budget in the final seven days. Early weeks build awareness with target accounts. The last week turns that awareness into registrations, because people sign up for things that are close on their calendar.

Here is a four-week plan you can copy:

[table]
When | Campaign | Audience | Message
Week 4 (event announced) | Thought Leader Ad from the main speaker | Target accounts, broad roles | Why this topic matters now
Weeks 3 and 2 | Event ad, Engagement or Lead Gen | Target accounts by buying committee role | The specific outcome attendees will get
Week 1 | Event ad, higher budget | Target accounts plus warm retargeting | Urgency: date, seats, speaker names
Event day | Event ad with accelerated delivery (LinkedIn Live) | Registrants and warm audiences | "Live now"
Weeks 1 to 4 after | Replay event ad or document ad | Non-attendees and engagers | Watch the recording or get the slides
[/table]


What is accelerated delivery for event ads?

Accelerated delivery spends your budget as fast as possible during a short window, which is ideal for pulling viewers into a LinkedIn Live stream. It requires a lifetime budget and an end date, and the campaign can run for no more than 24 hours. It must be turned on when you create the campaign and cannot be added later, so set it up as its own campaign before the event day.

LinkedIn event ad best practices for B2B SaaS

The event ads that fill rooms with the right accounts share a few habits. These go beyond the generic "use a good image" advice:

1. Sell one outcome, not a topic.
2. Put faces in the banner. 
3. Front-load the first 150 characters. 
4. Use guest speakers from target accounts or known brands.
5. Have every speaker share the event. 
6. Write different intro text for each role. 
7. Refresh creative weekly in the final two weeks. 
8. Ask one qualifying question.

How to follow up and retarget after a LinkedIn event

The event is the middle of the campaign, not the end. Post-event follow-up is where target-account registrants become pipeline.

• Retarget non-attendees with the replay. Many registrants never show up live. ON24's webinar benchmarks found that 43% of total attendees watched on demand, so the replay matters.
• Build a retargeting audience from event engagement. LinkedIn lets you build audiences from people who registered, viewed, or engaged with your events.
• Send attendees a next-step offer. A short assessment, a benchmark report, or a live demo works better than a generic "thanks for coming."
• Hand target-account attendees to sales fast. Share who attended, what questions they asked, and how long they stayed. Follow up within 48 hours while the session is fresh.
• Turn the slides into a document ad for people who engaged but did not register.

For more ideas on sequencing these touches, see our guide to retargeting ad campaigns.

How to measure LinkedIn event ads

Measure LinkedIn event ads by how many target accounts registered, attended, and moved into pipeline, not only on cost per registration. A cheap registration from a company that will never buy has no value to a B2B SaaS team.

[table]
Metric | How to calculate | What a good result looks like
Target-account registration rate | Registrants from target accounts / all registrants | Rising over time; aim for most of your paid registrants
Cost per target-account registrant | Ad spend / target-account registrants | Lower than other channels for the same accounts
Show rate | Live attendees/registrants | Compare to your own history; ON24 reports a 60% registration-to-attendee rate on its platform
Accounts reached | Unique target accounts with at least one registrant | Coverage of your account list
Multi-threading rate | Target accounts with 2 or more registrants/target accounts with any registrant | Shows buying committee reach
Meetings and pipeline | Meetings booked and opportunities created within 30 to 60 days | The final test of ROI
[/table]


For context, ON24 reports an average of 239 attendees per webinar and 49 minutes of average engagement. Your numbers will vary based on your niche. Most platform-based benchmarks look higher because they include well-promoted events, so compare yourself mostly against your own past webinars.

Use our CTR calculator to check whether your event ad creative is earning enough clicks for the audience you are paying for.

Common LinkedIn event ad mistakes

Most failed webinar campaigns on LinkedIn come from the same handful of errors:

• Targeting job titles with no account list. 
• Turning on Audience Expansion for an ABM event. 
• Launching one week out. 
• Using a vague, topic-only title. 
• Not exporting or syncing registrant data. 
• Judging by cost per registration. 
• Stopping ads when the event ends. 

When LinkedIn event ads are not the right fit

Event ads are not always the best tool. Consider another format when:

• You need deep qualifying data at sign-up. A lead gen form with custom questions may serve you better.
• Your target list is under a few hundred accounts. Personal invites from sales, Conversation Ads, or direct outreach may beat paid reach.
• The event is mostly for existing customers. Email and in-app messages are cheaper.
• You have no follow-up plan. Without fast sales follow-up, even perfect targeting will not produce pipeline.

If you want a team to plan and run this for your next webinar, our LinkedIn ads agency builds event programs for B2B SaaS and AI companies, from account lists to post-event retargeting.

You can see what that looks like in our client case studies.