Most LinkedIn advertisers assume high costs are just part of the platform.

And yes, LinkedIn Ads are more expensive than many other channels. But after auditing hundreds of accounts, I can tell you a surprising amount of wasted spend comes from campaign settings that most advertisers never think to check.

The frustrating part?
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Many of these are enabled by default.

That means advertisers launch campaigns believing they’re targeting the right people efficiently while LinkedIn is quietly expanding audiences, increasing bids, and distributing ads in ways that often hurt performance.

Below are five of the biggest LinkedIn Ads pitfalls we consistently see affecting campaign costs and lead quality.

Check it out. 

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Pitfall 1: Using “Recent or Permanent Location” Instead of Permanent Location

This is one of the sneakiest defaults in LinkedIn Campaign Manager.

When setting geographic targeting, LinkedIn often defaults to “Recent or Permanent Location”. 

At first glance, that sounds helpful.

But “recent” can mean someone logged in from that location anytime within the last six months.

So if someone traveled to your target region for a conference, vacation, or client meeting, they may continue seeing your ads long after they’ve left.

That creates wasted impressions and weaker targeting precision.

For most B2B campaigns, switching to Permanent Location is the safer move because it targets users whose LinkedIn profiles indicate they actually live in the region you want to reach.

Simple adjustment, big impact on audience quality.

Pitfall 2: Leaving Audience Expansion Turned On

LinkedIn enables Audience Expansion by default in many campaigns.

This allows the platform to show your ads to users it considers “similar” to your selected audience.

In theory, that sounds useful.

In practice, it often waters down targeting.

Most advertisers choose LinkedIn specifically because of how precise the targeting can be. You’re paying a premium CPM to reach a highly specific professional audience.

If LinkedIn starts broadening that audience automatically, you lose some of the control you’re paying for.

For most campaigns, we recommend disabling Audience Expansion initially and only testing it intentionally if performance plateaus.

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Pitfall 3: Running the LinkedIn Audience Network Without Restrictions

The LinkedIn Audience Network extends your ads beyond LinkedIn itself onto third-party websites and apps.

There can be value here.

But unmanaged Audience Network traffic is also one of the biggest sources of low-quality clicks we see in account audits.

Without strict controls, advertisers can end up paying for accidental clicks, low-intent traffic, or even bot activity that pollutes campaign metrics.

That leads to misleading engagement data and inflated performance numbers that don’t translate into pipeline.

Our general recommendation is:

• Start with Audience Network turned off
• Test it carefully later
• Use strong blocklists or allowlists if you decide to expand

The goal isn’t more traffic.

The goal is qualified traffic.

‍Pitfall 4: Relying on Max Delivery Bidding‍

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Max Delivery sounds appealing because it promises the most results possible for your budget.

But in many cases, it also causes advertisers to massively overpay for clicks.

We regularly audit accounts seeing CPCs far above what they should be paying simply because LinkedIn is aggressively bidding on their behalf.

One overlooked setting makes this even worse:

“Enable Bid Adjustment for High Value Clicks”

This option allows LinkedIn to raise bids significantly beyond your target amount whenever it predicts a click is “high value.”

The issue?

LinkedIn tends to view a lot of clicks as high value.

Instead, manual bidding often provides much more control and efficiency, especially for experienced advertisers trying to scale profitably.

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Pitfall 5: Trusting LinkedIn’s Suggested Bid Range

LinkedIn frequently recommends starting bids that are far higher than necessary.

Many advertisers assume those recommendations are required to compete effectively.

They aren’t.

In reality, starting lower is often the smarter strategy.

A low bid doesn’t mean you’re getting “bad” users. It simply means you may enter fewer auctions initially.

That’s okay.

You can always increase bids gradually if delivery is too limited.

But if you start too high, LinkedIn will gladly spend your budget very quickly.

For many North American audiences, we often see campaigns operate efficiently well below LinkedIn’s suggested ranges.

The key is finding the minimum bid needed to spend your desired budget consistently — not paying more than necessary for the same audience.

The Bigger Issue: Defaults Are Expensive

What makes LinkedIn Ads challenging isn’t just the platform cost.

It’s that many of the default settings are designed to maximize delivery, not efficiency.

That means advertisers who never question those defaults often end up:

• Paying more per click
• Reaching broader audiences than intended
• Collecting lower-quality traffic
• Inflating costs without improving results

The good news is that these problems are fixable.

Sometimes improving LinkedIn Ads performance doesn’t require a completely new strategy.

Sometimes it just requires tightening the settings that are already there.

If your campaigns feel more expensive than they should be, these five areas are some of the first places worth auditing.
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