In-House Marketing Hire vs. Agency vs. Both
Authored by: Kelsey Blum – Creative Director | Date Published: August 03, 2026
“So, who actually owns marketing here?”
It’s the question every partner eventually asks, usually right after referrals stop doing the heavy lifting they used to. And once it’s asked out loud, the firm has three ways to answer it. Hire someone in-house. Bring in outside help. Or do both. It’s a six-figure call, and the right answer isn’t the same for every firm.
Should an Accounting Firm Hire an In-House Marketer or Use an Agency?
It depends on what the firm needs done, not just how big it is. An in-house hire lives inside the firm’s culture, sits in on partner meetings, and can turn around a same-day request without a briefing call. An agency brings a full bench of skills, since one person is rarely equally strong at content, SEO, paid ads, and design at once.
Most firms without a dedicated marketing department really have a marketing person instead, and that person is usually stretched across every one of those disciplines whether they’re a specialist in any of them or not. The honest answer is that the right structure changes as the firm grows, which is exactly why this decision is worth revisiting every couple of years rather than deciding once and moving on.
That number moves depending on what you count. AAM’s earlier benchmark studies broke spending into “with compensation” and “without compensation” categories, since salaries make up such a large share of most budgets. Firms that separate the two tend to get a clearer read on where the dollars are going, rather than lumping a marketing director’s salary in with ad spend and calling it one line item. For a firm sitting at $5M in revenue, that distinction matters more than it seems. A budget built entirely around one salary looks very different on paper than one that also funds content, ads, and design work on top of that person’s time.
What Percentage of Revenue Do High-Growth Firms Spend on Marketing?
More than most partners expect once the full picture is in view. According to the U.S. Bureau of Labor Statistics, the median annual wage for marketing managers was $177,770 as of May 2025. Add payroll taxes, benefits, software licenses, and the cost of any freelance help that person will inevitably need for design or web work, and a single in-house hire routinely runs well past $200,000 a year once fully loaded.
A $5M firm usually sits right at that inflection point. You’re past the “nobody knows we exist” stage but not yet at the size where referrals alone keep the pipeline full. That’s exactly the stage where AAM’s data suggests spending more, not less, tends to pay off.
The Real Cost of One In-House Hire
Median Base Salary
$177,770
Fully loaded annual cost
$200,000+
Payroll taxes, benefits, software, and freelance overflow close the gap fast.
That’s before the hire even works out. If the person isn’t the right fit, the Society for Human Resource Management estimates that replacing an employee costs between 50% and 200% of that employee’s annual salary once recruiting, onboarding, and lost productivity are counted. A bad marketing hire isn’t just a wasted year, it’s a wasted year plus the cost of doing it again. A $5M firm usually sits right at that inflection point. You’re past the “nobody knows we exist” stage but not yet at the size where referrals alone keep the pipeline full. That’s exactly the stage where AAM’s data suggests spending more, not less, tends to pay off.
What Are the Risks of Hiring the Wrong Marketing Person?
The most common one isn’t a bad hire, it’s a mismatched one. Firms often hire a generalist and expect specialist-level results across content, SEO, paid media, design, and recruiting marketing at the same time. That’s a lot to ask of one person, especially in an industry with its own vocabulary, seasonality, and buying behavior. A marketer without accounting industry background usually spends the first six months learning the business before producing anything a partner would call a result.
There’s also a coverage problem. One person gets sick, takes vacation, or leaves, and marketing output drops to zero until the seat is filled again. Firms with only one marketing employee are betting the whole function on a single person’s bandwidth and institutional knowledge.
What Does an Agency Bring That an In-House Hire Can’t?
Range, mostly. An agency isn’t one person wearing five hats, it’s five specialists who each own one hat well. That matters more in accounting marketing than it looks like on paper, since the Association for Accounting Marketing’s own benchmark data shows how differently high-growth firms build their marketing function compared to everyone else. High-growth firms maintain a leaner staff-to-employee ratio than low-growth firms, and their marketing team members earn 27% less on average than marketers at slower-growing firms. Rather than one expensive hire, the fastest-growing firms tend to spread the work and the spend differently.
An agency also comes with built-in coverage. If one person is out, the work doesn’t stop, because the relationship isn’t tied to a single employee’s calendar.
What Does the Hybrid Model Look Like in Practice?
For most growing firms, the answer isn’t purely one or the other. A common structure is a single in-house person, often a marketing coordinator or a business development lead, who owns the firm relationships, sits in on partner meetings, and manages the day-to-day, paired with an agency that handles content, SEO, design, and paid advertising execution.
How the Hybrid Model Splits the Work
In-House
- Firm relationships
- Partner meetings
- Same-day requests
- Institutional knowledge
- Day-to-day management
Agency
- Content strategy
- SEO
- Paid advertising
- Design
- Specialist coverage
The in-house person becomes the point person between the firm and the outside team, translating what partners need into work that gets shipped on a schedule the firm can count on. This is close to what AAM describes when it talks to marketers who are part of “a team or a department of one.” The association exists because so many firms carry exactly one person with the title, and that person almost always needs outside support to cover the rest of the function.
Which Model Fits Your Firm Right Now?
The right structure tends to move along with the firm, not with a single fixed formula.
Where Firms Tend to Land
No Marketing Hire
Start with an agency relationship
Growing Needs
One in-house hire + agency for execution
Mature Function
Small internal team + specialist partners
Revisit the structure every couple of years — growth moves the line
A firm with no marketing hire at all is usually better served starting with an agency relationship before adding headcount, since it avoids the cost and risk of a mismatched first hire. As the marketing workload grows, the hybrid model tends to make the most sense: one internal person for relationships and speed, an outside team for execution and range. The firms most likely to justify a small internal team are still the ones that lean on outside partners for specialized work like paid media or web development.
FROM AAM’S BUDGET BENCHMARK STUDY
You might not need to spend more. You probably do need to spend differently.
The in-house versus agency question is really a version of that same idea. It’s less about which option costs less and more about which structure gets the right work done without leaving gaps a partner has to notice before anyone else does.
HOW BRAND HOUSE MARKETING CAN HELP
A Marketing Partner That Meets You Where You Are
Brand House was founded by, and remains an affiliate of, an IPA Top 300 CPA firm, which means the team has sat on both sides of this exact decision. For firms with no marketing function yet, Brand House can act as the full outside marketing department, covering content, SEO, paid advertising, design, and social without the cost or risk of a first hire. For firms that already have someone in the seat, Brand House works alongside that person, filling in the specialist work a generalist hire can’t cover alone, from niche positioning to recruiting marketing to web design.
Either way, the firm gets range without the overhead of building a full department from scratch, and the internal hire, if there is one, gets to spend their time on the relationships and firm knowledge only someone inside the building can provide.
If you’re in the middle of this decision, a conversation with Brand House is a reasonable next step. Bring the budget number, bring the org chart questions, and the team can help map out what makes sense for your firm, without a sales pitch attached to every answer.