1. Who does the work
On the discovery call you’ll most likely speak to senior people. After signing, ask explicitly which strategist runs your account day-to-day, how many other accounts they manage, and how many years of B2B-specific paid or outreach experience they have. Big agencies push juniors to manage portfolios of 20-plus accounts. Campaign quality drops accordingly.
2. Specialism vs. generalism
“Full-service digital marketing” usually means LinkedIn is a third or fourth line item. Agencies that lead with LinkedIn (or treat it as a top focus area) will know things like: that the LinkedIn Audience Network turns on by default and quietly burns 30% of your budget on low-quality placements, or that ABM campaigns bias toward three accounts out of four hundred unless you frequency-cap them.
When shopping for a LinkedIn marketing agency, you have to evaluate your business’ top priorities and match that to an agency that is tried and tested in that specific aspect.
3. Reporting structure and cadence
While choosing a LinkedIn marketing agency, you have to consider ongoing reporting. You want a LinkedIn marketing agency to not just be able to carry out marketing activities, but also to clearly show the work done, results, and planned next steps.
Prioritize agencies that share weekly numbers in a real dashboard with the underlying data accessible to your leadership. If they hand-wave on attribution, walk.
4. Ad spend ranges they work with
As mentioned previously, the right agency for you would be one that matches your budget. For example, a $50K/month spender and a $5K/month spender would want different agencies. Some agencies won’t take you below a threshold. Others won’t have the bandwidth for big enterprise programs. Ask directly.
5. Industry fit
Each industry has unique triggers that influence buying. B2B SaaS targeting CFOs is different from B2B services targeting plant managers, which is different from cybersecurity targeting CISOs. So if you want to convince business decision makers on LinkedIn about your product, look for one that is familiar with your industry.
When the agency’s recent client roster overlaps meaningfully with your space, they would be better placed to help reach your business goals. They will propose strategies that have brought success for previous clients, and spend less time and resources on figuring out successful tactics.
6. Contract structure
Contracts are meant to protect both parties and must be considered when choosing a LinkedIn agency. Avoid agencies with contracts that offer them too much protection or worse, entrap you. For example, a twelve-month lock-ins protect agencies, not clients. Month-to-month with a 30 to 60-day notice is the fairer model in 2026 and increasingly the standard. You should also watch for agencies that bury auto-renewal clauses inside multi-month minimums.
7. Tooling stack visibility
While you should prioritize agencies with required expertise, a major advantage of hiring any external agency is to get benefits of their professional tools. When vetting agencies, ask what they use for things like audience building, CRM sync, attribution, and reporting. Rule out agencies whose answer is vague or “we use proprietary tools” with no specifics, because that would often signal a manual spreadsheet behind the curtain.
8. Pricing transparency
The LinkedIn agencies we rank as the best have transparent pricing. The ones that won’t share starting numbers until call three sometimes have a reason for that. An agency that does not mention pricing on their service page is a red flag. Most agencies would not publish their pricing publicly due to reasons like services tailored to specific client needs. Even if you eventually choose such an agency, before you sign a contract, ensure that you understand their full pricing and expected total costs in every scenario.
Red flags to be aware of in agencies’ LinkedIn programs
Now that we’ve outlined the factors to consider, we must also mention instant red flags to look out for. Avoid agencies that engage in any of these practices.
- Audience expansion turned on: LinkedIn enables this by default, and your campaign starts targeting people LinkedIn thinks are similar to your real audience, often on placements like the Audience Network. Spend leaks. Almost no audited campaign has it switched off out of the gate.
- No suppression lists: Existing customers, churned accounts, and competitors keep getting served ads. You’re paying to reach people you already have a relationship with or never wanted in the first place.
- One ad creative tested across all funnel stages: Cold prospects, warm prospects, and bottom-funnel retargeting all need different copy and different offers. Agencies that run the same lead gen ad for everyone are spending your money to make their workflow easier.
- Lead Gen Form completion rates without quality follow-up: A 30% form completion rate looks impressive until you find out half the leads are tire kickers. Look at SQL conversion or pipeline contribution before celebrating.
- No conversion tracking on the LinkedIn Insight Tag: Surprisingly common. Without it, all reporting is guesswork on top of LinkedIn’s own attribution defaults, which are generous to LinkedIn.
- Zero discussion of your CRM data or sales process: If the LinkedIn marketing agency hasn’t asked about your past closed deals, your existing CRM contacts, or how a lead becomes pipeline, they’re optimizing for clicks instead of revenue.
