B2B paid search agency pricing: what you should actually pay

Overview

Most UK B2B paid search management fees in 2026 fall between around £500 and £5,000 a month, or 10–20% of ad spend, with one-off setup fees commonly £250–£1,000. The right model — flat fee, percentage of spend, or hybrid — depends on your account size and how it will grow. What matters more than the headline number is what the fee actually includes and whether it is structured so the agency’s incentives align with your results, not just your spend.

This guide breaks down the realistic range, the three pricing models and their trade-offs, what a fee should buy, and the red flags that signal a poor deal.

This guide is part of our complete guide to B2B paid search.

In this article:

1. The honest range for 2026
2. The three pricing models
3. What a management fee should include
4. Setup fees and extras
5. Red flags to watch for
6. How to choose between providers
7. Frequently asked questions

1. The honest range for 2026

UK B2B paid search management is priced across a wide band because, like SEO, “management” covers everything from a freelancer occasionally adjusting bids to a senior team running sophisticated, conversion-optimised campaigns with offline tracking and continuous testing. As a guide, monthly management fees typically run from around £500 at the entry level to £5,000 or more for substantial accounts, or are charged as 10–20% of ad spend. One-off setup fees, covering the initial build and configuration, commonly sit between £250 and £1,000.

The spread reflects real differences in the scope of work and the seniority of the people doing it. A small, simple account needs less management than a large, multi-campaign account with offline conversion tracking, ongoing testing and tight integration with a CRM. As with any professional service, the headline figure is best read as a proxy for how much expert time and attention your account will actually receive, and judged against what that work is worth in better-qualified leads at a lower cost.

There is a relationship between the fee and the ad spend it manages that is worth understanding. A management fee that is tiny relative to a large ad budget is a warning, not a bargain: it usually means the account will receive too little attention for its size, and small inefficiencies on a large spend cost far more than the fee saved. Conversely, a substantial fee on a tiny ad budget rarely makes sense either, since there is not enough spend to optimise. The fee should be proportionate to the work the account genuinely requires, which scales with spend, complexity and how actively the account is managed — not set at whatever headline number looks cheapest in isolation.

2. The three pricing models

Agencies structure paid search fees in three main ways, and each creates slightly different incentives worth understanding before you sign.

A flat fee is predictable and easy to budget, and it does not penalise you for spending more — but it offers the agency no direct incentive to grow the account, and a small flat fee on a large account may mean too little attention. A percentage of ad spend scales naturally with the account and is common, but it creates an awkward incentive: the agency earns more when you spend more, which is not always in your interest, since the goal is efficient leads, not maximum spend. A hybrid — a base fee plus an element tied to spend or, better, to performance — attempts to balance stability with alignment, and a performance element tied to qualified leads or pipeline aligns the agency with what you actually care about.

The model matters less than the alignment it creates. The best arrangement is one where the agency is rewarded for the outcomes you want — qualified leads and pipeline at an efficient cost — rather than simply for the size of the account or the volume of spend. When evaluating a pricing model, ask what behaviour it incentivises, and prefer the one that points the agency at your results.

It is also worth thinking about how the model behaves as your account grows or shrinks. A percentage-of-spend model means your management cost rises automatically as you scale — fine if the extra spend is efficient, frustrating if it is not, since you pay more management for spend that may be buying lower-quality clicks. A flat fee holds steady as you scale, which rewards growth but can leave a large account under-attended if the fee was set for a smaller one. A well-designed hybrid — a base fee that ensures a floor of attention, plus a modest element tied to performance — tends to behave sensibly in both directions. The point is to choose a model whose incentives still make sense at the size you expect the account to reach, not just where it starts today, since renegotiating a misaligned model later is more disruptive than getting it roughly right at the outset.

3. What a management fee should include

Whatever the model, a management fee should buy a defined and substantial set of work, and a vague answer about what is included is itself a warning sign. At a minimum, proper B2B paid search management should cover ongoing campaign optimisation — bids, keywords, targeting and budgets adjusted continuously rather than set and forgotten; conversion tracking and its maintenance, including the offline-conversion tracking that B2B specifically needs; testing of ads and landing-page elements; and regular reporting tied to leads and pipeline rather than just clicks and impressions.

The offline-conversion tracking point is especially important in B2B, because so much of what matters — whether a lead became qualified, an opportunity, a customer — happens after the click, in the CRM. Management that does not connect campaigns to those downstream outcomes is optimising blind. This is one of the most common gaps in poorly-run B2B accounts — see the most common B2B Google Ads mistakes.

A good way to assess a fee is to ask exactly what work it funds each month and how that work will be reported. A confident provider answers specifically — the activities, the cadence, the metrics tied to your pipeline. An evasive one talks in generalities, which usually means the fee buys less active management than it should.

Beware too of the “set and forget” account, which is one of the most common ways management fees are wasted. A campaign built well at the start but barely touched afterwards will drift: search terms change, competitors shift their bidding, ad fatigue sets in, and what was efficient becomes wasteful. Paid search is not a one-time build but a continuously managed system, and a fee should buy genuine ongoing attention — regular optimisation, testing and adjustment — not a one-off setup quietly billed monthly. If you cannot see evidence of active, recent work in your account and your reporting, you are likely paying a management fee for management that is not happening.

4. Setup fees and extras

Beyond the ongoing fee, there are usually one-off and occasional costs worth anticipating so they do not come as a surprise. A setup fee — commonly £250–£1,000 — covers the initial account build: campaign structure, keyword research, conversion-tracking configuration, and the first set of ads and landing-page guidance. This is real, skilled work that sets the foundation for everything after, so a reasonable setup fee is a sign of a thorough start rather than a cost to resent.

Other extras may include landing-page design or build, creative production for ad assets, and major account restructures or expansions into new campaign types. These are legitimate when they are clearly scoped and add value, but they should be transparent rather than buried. When comparing quotes, make sure you are comparing the full picture — setup, ongoing management and likely extras — rather than just the headline monthly fee, since a low monthly figure with heavy extras can cost more overall than a slightly higher all-inclusive arrangement.

5. Red flags to watch for

Several signals indicate a pricing arrangement or provider to be cautious of, and recognising them upfront saves money and wasted months.

• Reporting only on clicks, impressions and CTR rather than leads, qualified leads and pipeline — a sign the agency is not focused on, or not tracking, what matters in B2B.
• No offline-conversion tracking, meaning campaigns are optimised toward raw form fills rather than qualified leads or customers.
• Vagueness about what the fee includes, or unwillingness to specify the monthly work and how it is reported.
• Very cheap management on a large spend, which usually means too little attention for an account of that size.
• Long lock-in contracts with no clear performance accountability, which protect the agency rather than you.

The common thread is misalignment — pricing or reporting that serves the agency’s convenience rather than your results. The reassuring inverse is that a provider who reports on pipeline, tracks offline conversions, is specific about the work, and is comfortable being held to outcomes is demonstrating exactly the alignment you want. Use these flags not just to avoid bad deals but to recognise a good one.

6. How to choose between providers

Once you understand the models, the inclusions and the red flags, choosing between providers comes down to a few practical comparisons that cut through the headline numbers.

Compare like with like first: the full cost (setup, ongoing management and likely extras), the specific work funded each month, the seniority of the people doing it, and what the reporting will actually show. A cheaper monthly fee that buys junior, occasional attention and reports only on clicks is worse value than a higher fee buying senior, active management that reports on qualified leads and pipeline. Ask each provider to walk you through an account they manage and the reporting they produce — not a polished case study, but the working reality — and notice whether they talk in terms of clicks and impressions or of qualified leads and customers. The language they reach for reveals what they optimise toward.

Pay attention, too, to how they handle the B2B-specific essentials: offline-conversion tracking, CRM integration, and optimisation toward lead quality rather than volume. A provider who raises these unprompted understands B2B paid search; one who has to be asked, or who treats them as optional extras, may be running your account on B2C instincts. Finally, weigh the contract terms — a provider confident in their work rarely needs to lock you into a long commitment, so heavy lock-in with weak accountability is a sign to be cautious. The right provider is the one whose incentives, expertise and reporting all point at the outcomes you care about, at a fair price for the work involved.

7. Frequently asked questions

Is a percentage of ad spend a fair way to charge?

It is common and works reasonably for scaling accounts, but be aware it rewards the agency for higher spend rather than efficient results. A flat fee or a hybrid with a performance element tied to qualified leads often aligns incentives better with what you actually want.

What should a setup fee cover?

The initial account build — campaign structure, keyword research, conversion-tracking configuration, and the first ads and landing-page guidance. A reasonable setup fee, commonly £250–£1,000, reflects genuine foundational work that everything afterwards depends on.

How do I know if I’m overpaying?

Judge the fee against the work it funds and the results it produces — qualified leads and pipeline at an efficient cost — not against a benchmark. A fee that buys little active management or reports only on clicks is poor value at any price. See how to measure cost per qualified lead in B2B.

Should management and ad spend be one budget?

Think of them as separate but related: ad spend goes to Google, management to the agency, and ad spend typically runs several times the fee. Budget for both. See how much to spend on B2B Google Ads.

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