- An agency does a piece of your marketing (ads, content, web, SEO). A fractional CMO leads all of it: strategy, priorities, budget, vendors, and results.
- Hire an agency when you know exactly what you need done. Hire a fractional CMO when you do not, or when the pieces you have are not adding up to clients.
- Many businesses need both. The CMO sets the plan and holds the agency to it.
Here is a conversation I have had more times than I can count.
An owner says, “We hired an agency. They did good work. We got more traffic. But we did not get more clients, and I do not know why.”
And when I look under the hood, the agency did exactly what it was hired to do. The problem was that nobody was in charge of the whole picture. Nobody asked whether the traffic was the right traffic, whether the offer was clear, whether anyone was following up, or whether the sales process could handle what marketing sent it.
That is the real difference between a fractional CMO and a marketing agency. One does a piece. The other owns the result. Let me break it down so you can pick the right one, and avoid paying for the wrong one for a year.
What a marketing agency does
An agency is a team of specialists you hire to do a defined piece of marketing work. Run your ads. Write your content. Build your website. Handle your SEO. Produce your videos.
Good agencies are great at that piece. They have the tools, the people, and the reps. If you tell them “run Meta ads to this landing page with this budget,” they will do it better and faster than you can in-house.
What an agency usually does not do:
- Decide whether ads are the right move at all.
- Fix your offer or your positioning.
- Look at what happens after the lead comes in.
- Tell you to spend less with them and more somewhere else.
- Own your overall marketing number.
That is not a knock. It is the job description. An agency is a doer. Someone still has to be the decider.
What a fractional CMO does
A fractional CMO is a senior marketing leader who works inside your business part-time. “Fractional” just means you get a fraction of their week instead of a full-time salary.
They do what a full-time chief marketing officer would do:
- Set the strategy. Who we are for, what we say, where we show up, and what we are not going to do.
- Fix the foundation. Positioning, message, offer, and the path from first touch to booked call. If those are broken, no agency can save you.
- Own the plan and the budget. What gets spent where, and why.
- Manage the doers. Agencies, freelancers, your in-house marketer. They set the brief, review the work, and hold everyone to the number.
- Connect marketing to sales. They make sure leads get followed up, the sales team has what it needs, and the numbers are tracked end to end.
- Report to you like a leader, not a vendor. Here is what we did, here is what it produced, here is what we are changing.
In other words, a fractional CMO is the person who answers the question “why are we getting traffic but not clients?” and then fixes it.
Side by side
| Marketing agency | Fractional CMO | |
|---|---|---|
| Role | Does a piece of the work | Leads all of the marketing |
| Starts with | Your brief (“run ads,” “write posts”) | Your business goal (“more premium clients”) |
| Owns | Their deliverable | The marketing result |
| Fixes the offer and positioning | Usually not | Yes, first |
| Manages other vendors | No | Yes |
| Looks at sales and follow-up | Rarely | Always |
| Sits in your leadership meetings | No | Yes |
| Best when | You know what you need done | You need to figure out what to do |
| Risk | Doing the wrong thing well | Strategy with nobody to execute (fix: give them a team) |
What each one costs
Pricing varies by market, scope, and experience, so take any single number with a grain of salt. Here is how to think about it.
Agencies usually charge a monthly retainer per service, plus your ad spend if they run ads. The bill grows with every channel you add. Three agencies for three channels means three retainers and three people who each see one slice of your business.
A fractional CMO is usually a flat monthly fee for a set number of days or hours a month. It is more than one agency retainer and far less than a full-time CMO’s salary and benefits. What you are paying for is senior judgment and ownership, not production hours.
The question that actually matters is not “which is cheaper.” It is “what is it costing me to have no one in charge.” If you have paid two or three vendors for a year and cannot say what it produced, that is the real expense.
The two-minute test
Answer these honestly.
- Can you say, in one sentence, who your best client is and why they pick you?
- Do you know your cost per lead and your cost per client?
- Do you know what happens to a lead in the first hour after it comes in?
- If your agency sent you twice as many leads tomorrow, could your sales process handle it?
- Do you have one person who owns the marketing number and reports on it monthly?
Five yeses: you know what you need. Hire an agency for the piece and manage it yourself.
Three or fewer: you do not have a marketing execution problem. You have a marketing leadership problem. An agency will build on a cracked foundation. You need a fractional CMO first.
In between: you probably need a CMO to set the plan and an agency to run it. That is the most common answer for growing service businesses.
When an agency is the right call
- You already have a clear offer, a clear message, and a sales process that works.
- You know which channel you want more of and just need hands to do it.
- You have someone in-house (maybe you) who can brief, review, and hold them accountable.
- You need production: a website, a video, a content library, an ad account built right.
If that is you, a good agency is a great deal. Ours does this work for clients who are ready for it. See the marketing agency page for what we build.
When a fractional CMO is the right call
- You are busy but not growing, and you cannot tell why.
- You have hired agencies before and the results never added up.
- You are about to spend real money on marketing and want it spent right.
- Your marketing and your sales do not talk to each other.
- You want a leader in the room, not another vendor on the invoice.
- You are too small for a full-time CMO but too big to keep winging it.
What it looked like for one client
KP Law Group in Atlanta did not need another vendor. They had tried pieces. What they needed was someone to own the whole front end of the business: who they were for, how they showed up, how leads came in, and what happened next. I came in as their fractional CMO. We rebuilt the message, the lead flow, and the follow-up as one system instead of a pile of tactics.
They doubled revenue in one year. Not because we found a magic channel. Because someone was finally in charge of the whole flow.
Why I run both
I run a fractional CMO practice and a marketing agency, and people sometimes ask why. The answer is that they are two halves of the same job.
I think about every business as a flow. Attention turns into trust. Trust turns into conversations. Conversations turn into clients. Clients turn into results, proof, and referrals. I call it the Profit Flow.
An agency makes one link of that chain stronger. A fractional CMO makes sure every link connects to the next one. When a client needs both, they get a leader who sets the plan and a team that executes it, with one person accountable for the result. That is the setup I would want if I were in your seat.
Whichever way you go, start with the foundation. If you want to build that yourself first, how to build a lead generation system lays out the pieces, and predictable lead generation shows what it looks like when it runs on its own.
Frequently asked questions
What is the difference between a fractional CMO and a marketing agency?
An agency does a defined piece of marketing work, like ads, content, or web. A fractional CMO is a part-time senior leader who owns the whole marketing strategy, fixes the foundation, manages the vendors, connects marketing to sales, and is accountable for the result.
Is a fractional CMO worth it for a small business?
It is worth it when you are spending real money on marketing without a clear plan, when agencies have not produced clients, or when marketing and sales are not connected. It is not worth it if you already have a clear strategy and just need hands to execute.
Can a fractional CMO replace an agency?
Usually not fully. A CMO leads; an agency produces. Many businesses use a fractional CMO to set the plan and manage an agency, freelancers, or an in-house marketer to execute it.
How much does a fractional CMO cost compared to an agency?
A fractional CMO is typically a flat monthly fee for a set amount of time, more than a single agency retainer and far less than a full-time CMO with salary and benefits. Agencies charge per service, so the cost grows with each channel you add.
How do I know which one I need?
If you can clearly state who your best client is, know your cost per client, know what happens to a lead in the first hour, and have someone owning the marketing number, hire an agency. If not, you have a leadership gap and need a fractional CMO first.
Not sure which one you need?
That is the first thing we figure out on a call. Gilberto Herrera works as a fractional CMO for growing service businesses and runs a marketing agency for the ones who are ready to execute. Book a strategy call and we will tell you which one fits, even if the answer is neither yet.
Keep reading: How to build a lead generation system · Predictable lead generation · Organic lead generation that works · What does a small business consultant do?
Gilberto HerreraBusiness growth strategist, TEDx speaker, and fractional CMO. Founder of Profitable Pro, Inc. For four years he was Alabama’s Grow with Google Digital Coach, training over 8,000 entrepreneurs. He works with business owners across the country. Read his story.