Hiring a Marketing Agency vs. In-House Team: Which is Best for Your Business?

Should I Outsource Marketing Services?

Hiring internally or hiring an agency comes down to two questions: what the work costs you, and how many separate skills it takes to do well. For most small and mid-sized service businesses both answers point toward an outside marketing agency, though there are real exceptions worth knowing about.

The True Cost of an In-House Marketing Team

Marketing isn't one job. Covering it internally means hiring across several disciplines:

• Web design and development
• SEO
• PPC and paid ad management
• Content and copywriting
• Marketing strategy

Wages for those roles are public record. In its May 2025 Occupational Employment and Wage Statistics survey, the U.S. Bureau of Labor Statistics put the national mean annual wage at $177,770 for marketing managers, $98,770 for web developers, $89,490 for market research analysts and marketing specialists, and $86,090 for writers and authors. A four-person team drawn from those roles costs about $452,000 in wages. A business outside a major metro will pay under the national mean, but the total stays well into six figures.

Wages are only part of the bill. You also carry:

• Payroll taxes and benefits
• Software for design, analytics, and campaign management
• Ongoing training as ad platforms change their rules

An agency fee covers all of that in one line item. What agencies charge for a full scope of services varies widely, and we've broken down the ranges separately in how much most marketing agencies charge.

Please note: the pricing referenced in this blog reflects industry averages and is not necessarily a reflection of Momentum Marketing's pricing. At Momentum, we strive to build a marketing strategy and plan around the budget you have to work with. No matter how small or large your budget may be, we're here to help.

Why Marketing Agencies Cost Less to Run

Four things drive the difference:

1. You get a team instead of a person. A retainer buys time from a strategist, a designer, an ad manager, and a writer, rather than one generalist who is strong in one of those areas.
2. Overhead stays off your books. Software licenses, desk space, benefits, and recruiting costs sit with the agency.
3. Spend can move. Marketing needs rise and fall with your season, and an agency scope can be adjusted where a salary can't.
4. Training isn't your expense. Keeping current with Google and Meta rule changes is part of what you're already paying for.

An agency isn't necessarily cheaper than one junior hire. It is cheaper than assembling the range of skills that one hire can't cover.

The Expertise Factor: Agencies Deliver Results

Agencies work across many clients and industries, so they've usually already seen what works in yours. Our pest control client saw 48% traffic growth and 206% more leads, and an electrician client hit 200% growth in booked jobs in two months.

With in-house hires you run into skill gaps. A strong web designer is rarely also an SEO, and a good writer is rarely the right person to manage paid search. An agency closes those gaps by putting a specialist on each piece.

A Hypothetical Comparison, With Benefits Included

Salary isn't the whole payroll number. In its Employer Costs for Employee Compensation report for March 2026, the U.S. Bureau of Labor Statistics found private industry employers paid an average of $32.60 per hour in wages and $14.01 per hour in benefits, which works out to roughly 43 cents of benefits for every dollar of wages.

Apply that to the hypothetical four-role team above. To be clear, this is arithmetic on public wage data, not a real company and not a quote: $452,000 in wages plus about $194,000 in benefits puts the fully loaded payroll near $646,000 a year, before software or recruiting. Set that next to an annual agency retainer for the same scope of work and the gap is wide.