B2B paid search: the complete guide for 2026

Overview

Paid search is the fastest way to put your brand in front of buyers at the exact moment they are searching for what you sell. Flip the switch and qualified traffic starts flowing the same day — no waiting for rankings to compound. That speed is why most B2B companies run it alongside organic search.

But B2B paid search is unforgiving of the instincts that work in consumer advertising. Conversion rates are lower, clicks are more expensive, sales cycles are long, and a campaign optimised for cheap clicks rather than qualified leads can burn budget fast while looking busy. The B2B average search conversion rate sits at roughly 1.42%, and a single qualified lead can be worth thousands — so the whole game is buying the right clicks, not the most clicks.

This guide covers what a B2B marketing leader needs to make paid search pay: how to set a budget, what to expect to pay an agency, how to measure cost per qualified lead, when to choose Google versus LinkedIn, the mistakes that waste spend, and how match types and measurement actually work. Each section links to a deeper guide in this hub.

If you want help running it, see our B2B paid search service.

In this guide:

1. What makes B2B paid search different
2. How much you should spend on Google Ads
3. What B2B paid search agencies charge
4. Cost per lead and cost per qualified lead
5. Google Ads vs LinkedIn Ads: which first?
6. Why most B2B campaigns fail — and how to fix them
7. Match types: broad vs exact
8. Measuring paid search the B2B way
9. Paid search, SEO and the wider channel mix
10. How to choose a B2B paid search agency
11. Frequently asked questions

1. What makes B2B paid search different

B2B paid search uses the same platforms as B2C but rewards almost opposite instincts. The audience is narrow, the clicks are expensive, and most of the value sits with a small number of high-intent buyers who convert weeks or months after the click.

Lower conversion rates, higher stakes

The average conversion rate for B2B search ads is around 1.42% — far below the cross-industry average of roughly 4.4%. That is not a failure; it reflects considered, multi-stakeholder buying. It does mean you cannot afford to pay for junk clicks: every pound has to chase a qualified lead, not a vanity conversion.

Expensive, specific clicks

B2B and professional-services clicks are among the pricier on Google. UK CPCs commonly run from a couple of pounds to £8 or more, with legal and financial services at the top. Business-services keywords average around £5.58 per click and roughly $103 per lead. The terms are narrow and the competition is concentrated, so precision matters.

The conversion happens long after the click

A click becomes a form fill, then an MQL, then — weeks later — a sales-accepted lead and eventually revenue. Optimising to the click misses all of that. The discipline is to optimise to qualified leads and pipeline, which we cover in cost per qualified lead.

2. How much you should spend on Google Ads

There is no single right number, but there is a right way to size it. Your ad spend should be driven by your target cost per qualified lead, your conversion rates through the funnel, and the number of leads you need — worked backwards from a revenue goal, not picked from a benchmark table.

As a practical anchor, ad spend and management fees scale separately: ad spend is typically three to ten times the management fee. A serious B2B account in 2026 often lands around £5,000 a month in ad spend with a £1,500 management fee. Below roughly £1,500 a month in total budget, paid search rarely has enough room to gather the conversion data modern bidding needs.

For the full method of sizing and allocating budget, see how much a B2B company should spend on Google Ads, and for the wider picture, how much to spend on digital marketing.

3. What B2B paid search agencies charge

Management fees are separate from ad spend, and you should always know how much of your budget goes to Google versus to whoever runs the account. UK PPC management typically costs £500 to £5,000-plus per month. The two common models are a flat monthly fee or a percentage of ad spend, usually 10–20%, with the percentage often falling as spend grows. Setup fees of £250 to £1,000 are common.

A percentage model aligns the agency’s fee with your budget but can misalign incentives at high spend. For what each tier should include and the red flags to avoid, see B2B paid search agency pricing.

4. Cost per lead and cost per qualified lead

Cost per lead (CPL) is total spend divided by leads. It is a useful headline and a dangerous one, because a cheap lead that never qualifies costs you more than an expensive one that closes. The metric that matters in B2B is cost per qualified lead — and, ultimately, cost per customer.

Benchmarks set expectations: B2B SaaS and technology CPLs commonly run $50 to $200-plus, with enterprise and hyper-competitive categories far higher. But the platform that looks cheaper at the top of the funnel is often more expensive at the bottom, because Google leads tend to close at higher rates than social leads. Always carry the maths through to cost per customer.

The full method for measuring qualified-lead cost — and feeding CRM stages back into bidding — is in cost per qualified lead in B2B paid search.

5. Google Ads vs LinkedIn Ads: which first?

Google and LinkedIn answer different questions. Google captures existing demand — people already searching for a solution. LinkedIn creates demand — reaching precisely-targeted decision-makers who are not searching yet. For most B2B companies the sensible first move is Google, because intent is already there and the path to a qualified lead is shorter.

They work best together: Google for capture, LinkedIn for reach and account-based targeting. See Google Ads vs LinkedIn Ads for B2B and our practical LinkedIn Ads lead-generation guide.

6. Why most B2B campaigns fail — and how to fix them

Most underperforming B2B campaigns fail for the same handful of reasons, and all are fixable. The recurring culprits:

• Optimising for cheap clicks or raw conversions instead of qualified leads.
• No offline-conversion tracking, so the platform optimises toward form-fills that never close.
• Match types too broad, pulling in irrelevant queries and wasting spend.
• Weak landing pages that fail the five-second “what do I get, how soon, what does it cost?” test.
• Brand and non-brand spend blended together, flattering the numbers.

Each of these has a concrete fix. We work through them in why most B2B Google Ads campaigns fail and how to fix them.

7. Match types: broad vs exact

Match types decide which searches trigger your ads, and getting them wrong is one of the most common ways to waste B2B budget. Exact match gives tight control and high relevance but limited reach; broad match maximises reach and lets automated bidding find converters but risks irrelevant clicks if it is not fed clean conversion data and a solid negative-keyword list.

In modern Google Ads, the answer is rarely all-or-nothing — it depends on your conversion tracking, budget and how much the smart-bidding system can learn. We lay out a practical approach in broad vs exact match for B2B.

8. Measuring paid search the B2B way

Because B2B conversions happen long after the click and often offline, last-click ROAS is not enough. The accounts that win import CRM stages — MQL to SQL to Won — back into the platform so bidding optimises toward revenue, not form-fills. Measure cost per qualified lead and cost per customer, watch lead quality as closely as lead volume, and separate branded from non-branded performance.

Tying paid search to pipeline requires an attribution model your finance team trusts — see B2B marketing attribution.

9. Paid search, SEO and the wider channel mix

Paid search and SEO are complementary, not competing. PPC buys immediate visibility and is ideal for testing messaging and capturing high-intent demand now; SEO compounds over time and lowers your cost per lead as it matures. Running both lets paid search prove which terms convert, which then informs your organic content priorities.

See how the channels fit together in our B2B marketing channels guide, the B2B SEO guide for the organic side, and the answer engine optimisation guide for the emerging AI-search channel.

10. How to choose a B2B paid search agency

B2B paid search rewards specialists who optimise to pipeline, not platform metrics. A few questions worth asking any agency:

• Do they optimise to qualified leads and cost per customer, or to clicks and CPL?
• Will they set up offline-conversion tracking and import CRM stages?
• Is their pricing transparent — and do they separate ad spend from fees?
• Can they name who runs the account each week, and avoid long lock-ins?
• Do they coordinate paid search with your SEO and wider channel mix?

Rudo runs B2B paid search as part of one pipeline-focused programme. Explore our B2B paid search service, or see how it fits the wider mix in our B2B digital marketing hub.

11. Frequently asked questions

How much should we budget for B2B Google Ads?

Work backwards from the qualified leads you need and your target cost per lead. As an anchor, serious B2B accounts often run around £5,000 a month in ad spend; below roughly £1,500 total there is rarely enough data for bidding to work. See how much to spend on Google Ads.

What will an agency charge to manage it?

UK PPC management typically costs £500 to £5,000-plus per month, as a flat fee or 10–20% of ad spend. Full detail in B2B paid search agency pricing.

Should we start with Google or LinkedIn?

Usually Google, because it captures existing demand and the path to a qualified lead is shorter. Add LinkedIn for reach and account-based targeting. See Google Ads vs LinkedIn Ads.

Is paid search better than SEO?

They do different jobs: PPC buys immediate visibility, SEO compounds and lowers cost per lead over time. Most B2B programmes run both — see B2B marketing channels.

Why is our conversion rate so low?

A B2B search conversion rate around 1.42% is normal, not broken — it reflects long, considered buying. Many “low CVR” accounts simply have long sales cycles; the fix is to measure qualified leads and cost per customer, not raw conversion rate.tent. Citation positions compound, so building extraction-ready content now secures slots before competitors react.

Visit our Paid Search page to learn more about Rudo's PPC Management Services