Most SMEs searching for a bing ad agency are doing so after Google Ads has either burned through budget too quickly or delivered leads that cost far more than expected. Microsoft Advertising — the network that powers Bing ads — is a legitimate channel, but the question of who or what should manage it is worth answering carefully before you commit to a monthly retainer.
This article explains what a bing ad agency actually does, how it compares to managing Microsoft Advertising yourself or through an AI agent, and what SMEs tend to get wrong when making that choice.
What a Bing Ad Agency Actually Does
A bing ad agency manages your Microsoft Advertising campaigns on your behalf. That typically means setting up campaigns, writing ad copy, selecting keywords, setting bids, and reporting back to you on a weekly or monthly basis. Some agencies go further — adjusting match types, building negative keyword lists, testing ad extensions — but the core offering is campaign management in exchange for a management fee, usually calculated as a percentage of your ad spend.
For SMEs spending less than £3,000 per month on Microsoft Advertising, this model creates an immediate structural problem. If an agency charges 15–20% of spend, you are paying £450–£600 per month for someone to manage campaigns that may only be generating a handful of conversions. The economics work better at higher spend levels, where the percentage fee reflects more genuine complexity.
Microsoft Advertising does have real advantages over Google Ads in certain contexts. The audience skews older, more professional, and wealthier on average. Cost-per-click is often lower. And because fewer advertisers are competing, it is sometimes easier to achieve a strong position without aggressive bidding. A competent bing ad agency will know how to exploit those differences — but many smaller agencies simply import Google Ads campaigns directly into Microsoft Advertising and treat them as equivalent, which they are not.
If you want to understand how paid search management actually works before engaging anyone, this overview of what a paid search service does gives a clear picture of what the work involves at each stage.
Bing Ad Agency vs Google Ads: The Actual Comparison
Most SMEs run Google Ads first and add Microsoft Advertising later, if at all. That sequencing makes sense — Google holds a significantly larger share of search volume — but it also means that by the time an SME is looking for a bing ad agency, they have usually already experienced the frustrations of managing paid search through a traditional agency model.
The core frustrations are predictable. Reporting is backward-looking. Changes happen slowly. When something underperforms, the response is often a revised strategy document rather than an immediate bid adjustment. These are structural limitations of the agency model, not failures of individual practitioners.
| Factor | Bing Ad Agency | Google Ads Agency | AI Agent (Both) |
|---|---|---|---|
| Typical monthly fee | £300–£1,500 | £500–£3,000 | Lower fixed cost |
| Response time to underperformance | Days to weeks | Days to weeks | Continuous |
| Campaign import from Google | Manual, often lazy | N/A | Structured |
| Bid adjustments | Weekly or less | Weekly or less | Daily or more |
| Reporting | Monthly PDF | Monthly PDF | Automated summaries |
| Minimum viable spend | £1,500+/month | £2,000+/month | No minimum |
The table above reflects what we observed across nine years running a marketing agency. Agencies work best when they have enough spend to justify the attention. Below those thresholds, you tend to get templated management.
Why SMEs Search for a Bing Ad Agency
The intent behind searching for a bing ad agency is primarily informational with a comparison lean. People searching this term are not necessarily ready to hire — they are trying to understand whether Microsoft Advertising is worth running, and if so, whether they need specialist help to do it.
That distinction matters when you are evaluating your options. If you are researching this to decide whether to add Microsoft Advertising to your current mix, the answer depends heavily on your existing Google Ads performance. Microsoft Advertising tends to work best when Google Ads is already profitable, because you are extending a working model rather than diagnosing a broken one.
If Google Ads is already struggling, adding a new channel through a new agency compounds the problem. You end up paying two sets of management fees, receiving two sets of reports, and having no clear picture of where the money is going. Understanding what SMEs actually pay for Google Ads first is a more useful starting point than adding Microsoft Advertising on top.
The operational reality of Microsoft Advertising is that it shares enough infrastructure with Google Ads that anyone managing one can manage the other — with adjustments. The audience is different, the interface has quirks, and the automated bidding strategies behave differently. But the fundamental logic of search advertising is identical. You are bidding for visibility when someone searches for something you offer, and you want the cost of that click to be lower than the revenue it generates.
What a Bing Ad Agency Charges (And What You Get)
Fee structures across paid search agencies follow a few consistent patterns. Percentage of spend is the most common, typically ranging from 10% to 20%. Flat monthly retainers are common for smaller accounts, usually starting around £350–£500 for basic management. Some agencies combine both: a base retainer plus a percentage above a certain spend threshold.
What those fees cover is often less clear. A monthly management fee should include active optimisation — not just monitoring. There is a meaningful difference between an account manager who checks in weekly and makes one or two changes, and one who is adjusting bids, pausing underperforming ad groups, testing new copy, and actively working to reduce wasted spend. In practice, the former is more common than the latter, particularly at the lower end of the market.
Seeing how AI compares to a traditional PPC agency for SMEs is useful context here, because the management model — not just the channel — is often the bigger variable in performance.
For SMEs who want to understand the mechanics of what they are paying for before signing anything, here is how Overtime's AI agent approaches campaign management.
When You Do Not Need a Bing Ad Agency
There are situations where hiring a bing ad agency is the right call. If you are spending significant budget across multiple ad channels, running complex B2B campaigns with long sales cycles, or operating in a highly regulated industry that requires careful copy compliance, an experienced human practitioner adds real value.
But for the majority of SMEs — a local service business, an e-commerce store under £5 million turnover, a professional services firm with one or two service lines — the agency model introduces more overhead than it solves. You spend time briefing, reviewing reports, waiting for changes to happen, and repeating the cycle. The feedback loop is too slow for paid search, where a campaign can burn through a week's budget in two days if something goes wrong.
In 2026, the alternative to that model is an AI agent that does the operational work directly inside your ad accounts. It adjusts bids, pauses what is not working, reallocates budget toward what is, and sends you a readable summary of what it did and why. That is not a replacement for strategic thinking — but it does replace the administrative layer of account management that agencies charge for without always delivering.
Overtime works this way. It connects to your Google Ads account, manages the day-to-day optimisation, and keeps you informed without requiring you to sit through monthly calls or interpret dense reports. See what Overtime's approach costs compared to agency management.
Microsoft Advertising in 2026: Is It Worth Adding?
For most SMEs already running Google Ads profitably, Microsoft Advertising is worth testing. The incremental cost of adding it is relatively low if you have existing campaigns to build from, and the audience differences mean you will likely find some customers through Bing who would not have found you through Google.
The channel is particularly strong for B2B, financial services, and professional services — sectors where the Microsoft audience aligns closely with decision-makers. It is less differentiated for e-commerce in competitive consumer categories, where Google Shopping and social advertising often outperform search on Bing.
Before you engage a bing ad agency to run Microsoft Advertising, it is worth asking one question: is the problem the channel, or the management model? If your Google Ads are underperforming, adding Bing under the same management model will likely underperform too. Fix the model first.
For a deeper look at what SMEs actually need from paid search in 2026, this guide on PPC agency services sets out the full picture of what good management should include, regardless of the channel.
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FAQ
What does a bing ad agency actually manage?
A bing ad agency manages your Microsoft Advertising campaigns, including keyword selection, bid management, ad copy, and reporting. The quality of management varies significantly between agencies, and many smaller operations simply import Google Ads campaigns without adapting them to the Bing audience.
How much does a bing ad agency charge?
Fees typically range from 10–20% of monthly ad spend, or flat retainers starting around £350–£500 per month. For SMEs spending less than £2,000 per month on Microsoft Advertising, the percentage model often means the agency fee is disproportionately high relative to the work actually done.
Why should I consider Microsoft Advertising alongside Google Ads?
Microsoft Advertising reaches a distinct audience that skews older and more professional, often at a lower cost-per-click than Google. For B2B and professional services businesses, it can generate qualified leads that Google Ads misses, though it works best when Google Ads is already performing well.
Can an AI agent manage Bing ads instead of an agency?
Some AI agents focus on Google Ads management and do not yet extend to Microsoft Advertising. It is worth confirming exactly which channels any AI agent supports before switching from a bing ad agency, to avoid creating a gap in your paid search coverage.
For more on this, see our guide: Bing Ad Agency: What SMEs Actually Need.
For more on this, see our guide: What a Search Engine Marketing Firm Actually Does.
For more on this, see our guide: Pay Per Click Agency London: What SMEs Actually Need.
For more on this, see our guide: What a Google PPC Company Actually Does.
Do SMEs need a separate bing ad agency from their Google Ads agency?
Not necessarily. Many Google Ads agencies also manage Microsoft Advertising, and the campaigns share enough structural logic that a single team can handle both. The more important question is whether the management model — regardless of who provides it — is active enough to keep pace with how quickly paid search accounts can drift off course.