Marketing consultancy vs. agency: when to hire each one.
An agency executes: it creates, publishes and advertises. A consultancy decides what is worth executing: it audits, prioritizes and measures. Companies with a clear direction gain from an agency. Companies that invest and do not know what works need consulting first.
Fabrício MartinsFounder of Martin Marketing & Design
In short
- Agency: delivers pieces, campaigns and channel management.
- Consultancy: delivers audit, plan, goals and follow-up.
- Hire an agency when: the strategy is defined and you lack hands to execute.
- Hire a consultancy when: you invest in marketing and cannot say what pays back.
The difference that matters
The confusion is common because both work with marketing and often use the same tools. The difference is in the starting point.
An agency starts from a request: I need posts, I need ads, I need a website. It is hired to do. A consultancy starts from a question: why are sales not growing? It is hired to find out and to guide.
Neither is better than the other. They are remedies for different problems. The mistake is taking the wrong remedy: hiring execution when direction is missing, or hiring an audit when what is missing is hands.
Side-by-side comparison
| Agency | Consulting | |
|---|---|---|
| Main deliverable | Pieces, campaigns and channel management | Audit, action plan and goals |
| Starts with | A briefing of what needs to be done | An immersion in the business numbers |
| Measures success by | Deliveries on time and campaign results | Progress on the business goals |
| Relationship with the team | Takes over execution | Guides, trains and follows up |
| Typical duration | Ongoing contract | A project with defined cycles |
Signs that you need each one
You need a consultancy if
- You invest in marketing and do not know which channel brings customers.
- You have switched agencies more than once and the result did not change.
- You receive reports but do not know what to do with them.
- The team executes a lot and has no clear priority.
You need an agency if
- You know what works and need production volume.
- You have defined goals and channels, but lack people to operate them.
- You need specialists in one specific area.
- The demand is continuous and predictable.
Notice the second item in the first list. Switching agencies several times with no change in results is the clearest sign that the problem is not in the execution. It comes before it.
When it makes sense to have both
In larger companies, the most efficient arrangement is usually in layers. The consultancy defines what to measure, which channels to prioritize and which goal each one needs to hit. The agency, or the in-house team, executes within that plan. And the consultancy comes back every cycle to read the numbers and adjust the route.
This model solves an old problem: whoever executes rarely has the distance to say something is not working. An outside reading, with no interest in selling more production hours, protects the budget.
For it to work, this arrangement needs a simple agreement: one meeting per cycle with all three parties, a single dashboard of numbers and a short list of priorities. Without that, consultancy and agency become two voices competing for the client’s attention, and the benefit of the outside reading is lost.
The hybrid model: a consultancy that executes
For small and mid-sized companies, hiring two providers does not always fit the budget. That is why a third format has grown: the consultancy that also executes the priority areas.
It works like this: the work starts with the audit, as in any consultancy. The difference is that the first actions of the plan are executed by the same team that designed the strategy. There is no broken telephone between whoever thinks and whoever does.
That is Martin’s format. The person who runs the audit is the one who designs the strategy and follows the execution. The accounts, the access and the learnings stay with the client.
Questions to ask before signing
Whatever the choice, these questions separate a good provider from a future problem:
- How will you measure the result? The answer needs to include a number from your business, not just platform metrics.
- Who will work on my account? Find out whether you will be served by the person who sold to you or by someone you have not met yet.
- Who owns the ad accounts and the access? The right answer is always: the client.
- What happens if I end the contract? You should leave with everything: history, files and documentation.
- What do you not do? A provider that claims to do everything rarely does everything well.
If the next question is about investment, see how much marketing consulting costs.
What an audit looks like from the inside
Audit is the most used and least explained word in the market. In practice, it is an investigation with a beginning, middle and end, which usually looks at five areas:
- Business numbers. Where last year’s customers came from, how much it cost to bring in each one and how much each one generated.
- Funnel. How many people arrive, how many get in touch, how many close and where most give up.
- Channels. What each one delivers today: search, ads, social media, referrals, email.
- Website and materials. Whether the page explains the offer, conveys trust and makes contact easy.
- Competition. How the main competitors show up and what they promise.
The result should not be a hundred-page report. It should be a short list: the three or four bottlenecks that cost the most money, in order of priority, with what to do about each one and how to measure it.
How to recognize a real audit: it uses your company’s numbers, points out what not to do and ends with priorities. If it would fit any company in the industry, it is a ready-made template.
What about an in-house team? The third option
There is a third path: building your own team. It makes sense when marketing is a central part of the business and the workload justifies fixed salaries. The advantage is deep knowledge of the product and exclusive dedication. The disadvantage is the cost, the time to hire and the risk of the team getting stuck in operations, with no distance to question the strategy.
That is why an in-house team does not eliminate consulting. Many companies with their own team hire a consultancy precisely to bring method, market comparison and an outside reading. The team executes. The consultancy helps decide what to execute.
A practical example
A service company has been investing in social media and ads for two years, with an agency. The pieces are good, the reports arrive every month and sales do not move. The natural reaction is to switch agencies.
A consultancy would start with a different question: where do the customers who close come from? By cross-checking last year’s leads with the source of each one, the company discovers that most came from Google search and referrals, not from social media. The budget was in the wrong channel.
In this hypothetical scenario, the agency did not do bad work. It executed well a plan nobody had validated. That is exactly the space a consultancy occupies: before execution, deciding where it should point.
The outcome is also typical. With the audit in hand, the company does not need to fire the agency. It needs to change the request: fewer posts, more investment in search and in a page that converts. The same team, with a different direction, starts delivering a different result.
What each one delivers in the first month
A practical way to feel the difference is to look at what arrives in the first four weeks.
| Week | Agency | Consulting |
|---|---|---|
| 1 | Briefing meeting and access to the channels | Immersion in the numbers and access to sales data |
| 2 | Content calendar and campaign structure | Map of the funnel and the bottlenecks |
| 3 | First pieces and ads live | An action plan with priorities and goals |
| 4 | Report on the first deliveries | Execution of the priorities begins |
At the agency, the first month ends with things published. At the consultancy, it ends with decisions made. Both deliverables have value. The question is which one your company needs now.
Five myths about consultancies and agencies
- A consultancy only delivers a presentation. Some do work that way, but the current format includes following the execution and answering for the result of the plan.
- A big agency guarantees results. Structure helps with production volume. Results depend on direction, and a small account at a big agency does not always get the most experienced team.
- Consulting is for big companies. Smaller companies have less room to pick the wrong channel. That is where a good audit saves the most.
- Whoever executes cannot weigh in on strategy. They can and should. Good execution professionals bring day-to-day data no plan foresees.
- A long contract gives security. It gives security to the provider. For the client, what protects is a clear goal, an honest report and the freedom to leave.
How to prepare for the first conversation
The quality of the proposal depends on what you bring to the first meeting. With these items in hand, the conversation goes much further:
- Approximate revenue and number of new customers per month.
- How much is invested in marketing today, adding up media, tools and providers.
- Where you think customers come from, even if you are not sure.
- What has already been tried and what happened.
- The goal for the next twelve months.
- Who, inside the company, will follow the work.
It does not all need to be organized. A good provider helps gather what is missing. What cannot be missing is the willingness to open up the numbers. A consultancy or agency that works without seeing sales data is working with half the information.
How to switch providers without losing your history
Whether you are leaving an agency, ending a consulting engagement or bringing marketing in-house, the transition carries a risk: losing what was built. Before giving notice, check:
- Ad accounts. They need to be in your company’s name, with you as administrator. An account in the provider’s name means lost history.
- Measurement tools. The same rule applies to analytics, the tag manager and Search Console.
- Domain and hosting. Registered under the company’s tax ID, with a login you know.
- Social media and Business Profile. You as owner, the provider as a guest.
- Files. Logos, source files, copy, reports and documentation.
The ideal is to settle this at the start of the relationship, not at the end. When everything is in your name from day one, switching providers is just a change of access.
Frequently asked questions
It is when the company already sells and wants to grow predictably. In small businesses, a well-run audit avoids months of investment in the wrong channel. The format is usually leaner, focused on one or two priorities.
The audit and the action plan usually take two to three weeks. After that, follow-up continues in monthly cycles, for as long as it makes sense for the goal set.
It should not. The consultancy works inside your accounts, with the access you grant. The accounts, the data and the history belong to your company and stay with you when the project ends.
You can. Many consultancies offer the audit as a fixed project, with an action plan at the end. You can execute the plan with your team, with an agency or with the consultancy itself. What matters is that the document is clear enough for another team to follow.
Ask for three numbers: how many leads came from each channel, how much each one cost and how many became sales. If the report only shows reach, likes and clicks, it measures activity, not results. A good agency can connect its own work to at least one number from your business.
Conclusion
Agencies and consultancies solve different problems. If you know what to do and lack hands, hire execution. If you do a lot and do not know what works, hire direction.
And if you want both in a lean format, get to know Martin’s marketing consulting, or first understand what growth marketing is.
