Guide · Paid social

LinkedIn Ads for B2B: Set Up Your First Campaign

By the editorial team · Digital Agency Award · 2025-05-05

LinkedIn ads for B2B reach people by job, seniority and company, which suits sellers with a small set of buyers. This guide shows how to set up a first campaign: the objective, the audience, tracking, the budget and a lead form. It uses LinkedIn's own help pages from before May 2025.

Pick one objective first
Campaign Manager asks for an objective before anything else. The choice shapes the ad formats you see and what LinkedIn tries to deliver. Pick one that matches a result you can count.
LinkedIn groups its objectives into three stages of the buying path:
- Awareness: brand awareness.
- Consideration: website visits, engagement, video views and messaging.
- Conversion: lead generation, website conversions and job applicants.
For a first B2B campaign, most teams want leads. Two objectives fit. Lead generation opens a form inside LinkedIn that is pre-filled with the member's profile data. Website conversions sends people to your own page and counts the action you define there.
Do not mix goals in one campaign. If you want both reach and leads, run two campaigns and compare them.
Sources: LinkedIn Marketing Solutions Help, Advertising objectives available in ad campaigns
Build an audience that is big enough
B2B buyers are a small group, so audience size matters. The minimum campaign audience is 300 members, and location is a required targeting choice. A narrow location can shrink your audience, so check that it stays above 300.
Start with plain job targeting: a job function, a seniority level and a company size. Then add a company list if you know which firms you want to reach. LinkedIn calls this part of Matched Audiences.
The rules for a company list are simple:
- The file needs at least 300 rows to upload.
- The list must match at least 300 members before an active campaign can use it.
- The maximum is 20 MB or 300,000 companies.
- It can take up to 48 hours to build the audience.
Add the LinkedIn Page URL or company website to each row. LinkedIn says this helps it find better matches. If the list is too small, add more companies or combine segments.
Sources: LinkedIn Marketing Solutions Help, Requirements for company targeting lists; LinkedIn Marketing Solutions Help, Matched Audiences best practices
Install the Insight Tag before you launch
The LinkedIn Insight Tag is a small piece of code on your website. It lets Campaign Manager link ad clicks to actions on your site, so you can see which ads produce results. Add it before the campaign goes live so the first visits are counted.
After you place it, visit the page yourself. The source status shows Unverified until there is traffic, and it can take up to 24 hours to turn Active. If it stays Unverified, check that you copied the full code and used straight quotation marks, not curly ones.
One rule matters for some firms. LinkedIn says the tag should not sit on pages that collect sensitive data, such as pages where people manage financial accounts or medical appointments. A general business page is a different case. If you are unsure, ask your web team and your legal adviser.
Sources: LinkedIn Marketing Solutions Help, Troubleshoot the LinkedIn Insight Tag
Set a budget you can afford to learn from
LinkedIn's own page lists the floors. The minimum daily budget is $10 for any ad format. The minimum lifetime budget for a new campaign is $100. After launch, the lifetime floor becomes $10 times the number of days you scheduled.
LinkedIn suggests a default of $25 a day for new advertisers. It also recommends a lifetime budget with lifetime pacing, which spreads spend using a one week forecast of platform activity.
A small test is a sound way to start. Run it for a few weeks, so the system has time to learn. Then check the cost of each lead against what a lead is worth to your firm. Cost per click on LinkedIn varies by audience, so do not copy a number from another account.
Prices on the help pages are in US dollars. LinkedIn says accounts in other currencies get the equivalent of the $25 default.
Sources: LinkedIn Ad Tips, Campaign budgets for your LinkedIn ads
Make the Lead Gen Form short
You can build a Lead Gen Form from the Assets menu in Campaign Manager. You can also attach one while you create a campaign with the lead generation objective. Your ad account needs to be linked to a LinkedIn Page.
Here are the limits that matter when you fill it in:
- The headline can use 60 characters and the details line 160.
- You can pick up to 12 fields, and custom questions count toward that total.
- You can add up to three custom questions.
- First name, last name and email are on by default.
LinkedIn recommends three or four fields to drive more sign-ups. Fewer fields are the best practice for more sign-ups, so ask only what sales needs on day one. Job title and company are often enough, since LinkedIn fills them from the profile.
The form needs a privacy policy URL and a short privacy text that says how you will use the data. Add a thank you message and a button to a guide or booking page. Then agree who follows up and how fast. A lead that waits a week is a lead wasted.
Sources: LinkedIn Marketing Solutions Help, Create Lead Gen Forms
Your first week checklist
Use this list to check the work before you spend:
- One objective, written down with the result you want.
- An audience above 300 members, and ideally far larger.
- The Insight Tag installed and showing Active.
- A daily budget of at least $10, set for a test you can afford.
- A form with three or four fields and a working privacy link.
- A named person who answers leads the same day.
Change one thing at a time after launch. Swap the ad copy, or the audience, or the offer. If you change all three, you will not know what worked.
Sources

All guides · News · Methodology

Pick one objective first

Build an audience that is big enough

Install the Insight Tag before you launch

Set a budget you can afford to learn from

Make the Lead Gen Form short

Your first week checklist

Sources