The short version: LinkedIn's boost feature has a minimum total budget of £45 to £50 (roughly $50 US) and you'll typically pay £4 to £10 per click or £25 to £60 per 1,000 impressions, with senior job titles and finance or tech audiences at the top of that range. I've spent hundreds of pounds boosting posts over the past two years and the number that matters isn't the CPC, it's whether the post had any organic traction before you paid to push it, because boosting a flat post rarely rescues it.
What "boosting" means on LinkedIn
Boosting is LinkedIn's simplified paid promotion tool, sitting inside the normal newsfeed rather than the full Campaign Manager. You click "Boost" under one of your own posts, pick a goal (more reach, more engagement, or website visits), set an audience and a budget, and LinkedIn runs it for you. No campaign structure, no ad groups, no A/B testing setup. It's designed for people who don't want to learn the ads platform, which is exactly why it's worth understanding what you're trading away for that convenience.
The minimum spend is £45 to £50 total (LinkedIn shows this in your local currency and it moves slightly with exchange rates), and the minimum daily budget is around £10. You can boost for as little as three days or as long as thirty. There's no way to boost for less than that £45 to £50 floor, so if someone tells you they "boosted a post for a fiver," they mean something else, probably a Facebook-style micro budget confusion.
The real cost breakdown
Here's what I've seen across boosted posts for my own content and for a handful of consulting clients over the last eighteen months:
- Cost per click (CPC): £4 to £10 for general UK and US audiences, rising to £12 to £20 when you target by seniority (director level and above) or by specific industries like financial services or tech.
- Cost per 1,000 impressions (CPM): £25 to £60, again with finance, tech, and legal audiences at the expensive end.
- Cost per engagement (like, comment, share): £1.50 to £4, which sounds cheap until you realise most of those engagements come from people who'll never buy anything from you.
For context, that's more expensive per click than Facebook or Instagram ads in almost every case, sometimes three or four times more. LinkedIn knows its audience is full of decision makers with company credit cards, and it prices accordingly. If you've budgeted the way you would for a Facebook boost, double it and you'll be closer to reality.
My own experiment, with the actual numbers
Last year I boosted a post about being named on the Forbes social media influencer list again, a straightforward personal news post, no link out, just a photo and a paragraph. I put £75 behind it over five days, targeted to marketing directors and above in the UK and Ireland, aged 35 to 60.
The results: 18,400 impressions, 312 clicks (mostly profile visits, not website clicks), 94 reactions, and 11 comments. That worked out at roughly £4.07 per 1,000 impressions and £0.24 per engagement, which looked brilliant on paper. But when I checked how many of those profile visits turned into anything, a connection request, a DM, a booked call, the answer was two connection requests and zero calls. Compare that to an organic post I put up the same month with no spend at all, which got 6,200 organic impressions and led to one actual consulting enquiry, and the maths gets uncomfortable fast.
The post itself had already done well organically before I boosted it, around 2,000 impressions and 60 reactions in the first six hours, which is exactly why I chose it. That's the part almost nobody says out loud: boosting works best as an amplifier for something the algorithm and your audience have already told you is good, not as a rescue plan for a post that landed flat. I've tried boosting flat posts twice since, and both times the cost per engagement roughly doubled compared to boosting posts that were already performing.
What changes the price
A few things move your cost up or down more than anything else:
- Audience seniority. Targeting "C-suite" or "VP and above" can push CPC up by 50 to 100 percent compared to a broader "all professionals" audience.
- Industry. Financial services, legal, and enterprise tech are the most expensive verticals to reach on LinkedIn, full stop.
- Objective. Boosting for website clicks costs more per result than boosting for engagement or awareness, because you're competing with full Campaign Manager advertisers for the same click.
- Post format. Video and native document posts (carousels, PDFs) tend to get lower cost per engagement than plain text or link posts, because LinkedIn's algorithm favours dwell time.
- Geography. Boosting to the US costs noticeably more per click than boosting to the UK or Ireland, sometimes 30 to 40 percent more.
If you're weighing this up against other content investments, it's worth comparing to what you'd spend running a proper webinar, where webinar costs tend to run £200 to £2,000 depending on tools and promotion but often deliver a far more qualified lead than a boosted post ever will.
Boosting versus using Campaign Manager (the uncomfortable bit)
Here's the part most articles on this topic skip over. Boosting a post looks cheaper and simpler, but it uses a much blunter targeting engine than LinkedIn's full Campaign Manager. When you boost, you're choosing from broad audience categories, LinkedIn's own suggested lookalike audience, or simple job function and seniority filters. You can't upload a list of target company names, you can't exclude people who already follow you, and you can't retarget website visitors. Campaign Manager can do all of that.
The uncomfortable truth is that for the same or similar CPC, Campaign Manager usually gets you a far more precise audience, which means your cost per qualified lead ends up lower even though the headline CPC looks the same on both. I've run this comparison directly: a Campaign Manager campaign targeting "HR directors at companies with 200+ employees" cost me about £6.20 per click, almost identical to a boosted post's £5.80, but the Campaign Manager clicks converted to demo requests at nearly three times the rate. Boosting is the easy button, and easy buttons on advertising platforms are rarely the cheapest route to a result, they're just the fastest to set up.
A simple way to budget a test
If you want to test boosting rather than guessing, here's the process I use with clients:
- Post organically first and wait 24 hours. Only boost posts that hit at least double your average engagement rate in that window.
- Start with the £50 minimum, over three days, not thirty. You want a quick read, not a slow bleed.
- Pick one objective only. Awareness if you want reach, engagement if you want social proof, website visits if you have a landing page ready to receive traffic.
- Target as narrowly as the tool allows. A broad "all UK professionals" audience will always look cheap and always convert worse.
- Check results against a business outcome, not a vanity metric. Clicks and reactions are not enquiries.
If after that £50 test your cost per genuine enquiry looks reasonable, scale it in £100 to £200 increments and keep watching the same outcome metric, not the impression count.
When boosting isn't worth it
If your goal is genuine relationship building or thought leadership over months, organic consistency usually beats paid boosts, the same principle that applies whether you're building on LinkedIn or working out how to grow an audience on Facebook without feeding an algorithm that doesn't care about you. Boosting is a volume tool, not a trust tool. It'll put your post in front of more strangers, but it won't make a mediocre post persuasive, and it definitely won't replace a real content strategy that includes formats people stop scrolling for, which is why I keep coming back to interactive content like polls, quizzes, and calculators when a client wants engagement that boosting alone can't buy.
It's also worth knowing that boosting sits in a different bucket to paid placements like sponsored blog posts, where you're paying for editorial reach on someone else's audience rather than paying LinkedIn to widen your own. Both have a place, but they solve different problems, and confusing the two is how marketing budgets disappear without anyone being able to say what they bought.
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If that raises the next question, see The Ultimate Guide to boosting your marketing campaigns using a single platform.
Frequently asked questions
What is the minimum amount I can spend to boost a LinkedIn post?
LinkedIn's minimum total budget for a boosted post is around £45 to £50 (roughly $50 US), with a minimum daily spend of about £10, and you can't run a boost for less than that regardless of how short you make the campaign.
Is boosting a LinkedIn post worth the money?
It's worth it when you boost a post that's already performing well organically and you're targeting a narrow, relevant audience with a clear goal, but it's rarely worth it as a rescue attempt for a post that got little organic engagement in its first 24 hours.
Why is LinkedIn advertising more expensive than Facebook or Instagram?
LinkedIn's audience is made up of professionals with buying power and job titles that businesses pay a premium to reach, so CPCs typically run £4 to £10 or more compared to £0.50 to £2 on Facebook or Instagram for similar targeting.
Should I use the Boost button or LinkedIn's full Campaign Manager?
Boost is faster and simpler but uses cruder targeting; Campaign Manager takes longer to set up but lets you target by company name, exclude existing followers, and retarget website visitors, which usually produces a lower cost per genuine lead even at a similar cost per click.
