The right answer changes with revenue, and most businesses change too late in one direction or too early in the other.
A rough threshold
Below roughly $8,000 a month of total marketing investment, agencies and specialists give you more senior capability per dollar than a hire.
Above that, a dedicated in-house marketer paired with specialist partners usually beats a full-service retainer, because institutional knowledge starts to compound.
What never goes in-house first
Paid media management and technical SEO are the two functions where a generalist hire most often underperforms. They reward daily repetition across many accounts, which one business cannot provide.
The hidden costs of in-house
Salary is only part of it. Tools, training, management time, and the risk of a single person leaving all add up. One hire also rarely covers ads, SEO, design, and content equally well.
A hybrid often works best
Many growing service businesses keep a coordinator in-house who owns the relationship with specialists, combining local knowledge with outside expertise.
The takeaway
Hire in-house for ownership and context. Keep specialists for functions that improve with volume.