In-house or agency: how to decide who runs your social media

The choice between an in-house team and an agency is not settled by the headline figure, but by three variables: the volume of content your strategy genuinely requires, how seasonal your business is, and the level of production your formats demand. A salary always looks cheaper than a retainer. Right up until you add up everything that salary does not cover. Here is the framework for making the call, including the many cases where hiring is the right decision.

What the trade-off actually covers

Bringing social media in-house means putting strategy, content production, publishing, moderation and reporting in the hands of one or more employees. Outsourcing means handing all or part of that chain to an external partner.

The comparison is almost always framed badly, because it sets a salary against a retainer. Those two numbers do not cover the same scope. One social media manager, however good, does not replace a strategist, a creative, an editor and an account lead combined.

So the real question is not which option is cheaper. It is which one lets you hold the rhythm your strategy demands, twelve months a year, without a gap.

The full cost of an in-house role

The full cost of a role is the gross salary plus everything orbiting around it that never appears in the first estimate. Six spending lines get added, and forgetting them is what distorts the comparison.

• Employer contributions, which add a significant share on top of gross pay in France.
• Tools: scheduling, social listening, video editing, stock libraries, reporting. One subscription per tool, every month.
• Video production, still outsourced in most cases anyway, because a generalist profile rarely shoots or edits to the standard today's social formats demand.
• Recruitment, counting both the hours spent interviewing and any search fees.
• Skill building, training included, on platforms whose conventions shift every quarter.
• The absence of continuity: holidays, sick leave, resignation. A single role creates a single point of failure.

Take a brand aiming for three native videos a week across two platforms, plus daily moderation. On paper, one full-time role covers it. In practice, shooting and editing go back out to a supplier anyway, and the person hired spends most of their days coordinating rather than producing. The role then costs a salary plus a service, for an outcome nobody budgeted that way.

The last item on that list is the most underestimated. On platforms where consistency drives how often the recommendation system gets a chance to test your content, three weeks of silence cost more than the posts you missed, as we explain in our article on how the TikTok algorithm works.

What an agency brings that in-house does not

An agency pools several skills against a single budget. That is its structural difference, not a sales argument.

Elastic production capacity. A campaign peak doubles the volume without a hire, then the pace drops back without anyone having to be let go.

A cross-sector view. An agency sees what works elsewhere, across other categories and other formats. An in-house role sees only its own account, which over time creates a blind spot on emerging behaviours.

An outside perspective. This is the least visible value and often the most useful. An agency can say a creative direction is not working. An employee who reports to the person who approved that direction will say it less readily.

Continuity of service. A holiday or a departure on the agency side does not suspend production.

That said, price gaps between agencies come down to identifiable variables, which we break down in our article on how much a social media agency costs.

What in-house brings that an agency does not

It would be dishonest to present outsourcing as the right answer in every case. Three advantages of hiring are real, and sometimes decisive.

Product knowledge. In a technical, regulated or highly specialised sector, bringing an external partner up to speed is long and expensive. An employee who knows the offer produces sharper content, and faster.

Responsiveness. An employee sitting in the meetings picks up topics before they ever become briefs. That proximity cannot be written into a contract.

Retained learning. What the role learns stays inside the company. An agency that leaves takes part of the method with it, even with a clean handover.

If your volume justifies a lasting full-time role, your sector is complex and your activity is steady across the year, hiring is probably the right call.

The four questions that settle it

Four questions are enough to decide in the large majority of cases. They are answered with facts, not preferences.

How much content, really?

Count what your strategy requires per week, per platform and per format. If the total does not fill a full-time role, the hire will create either an under-used position or a scope that drifts into other marketing duties.

Is your activity steady or seasonal?

Strong seasonality argues for an elastic setup. An employee costs the same in the quiet months as in the peak, and the quiet months usually last longer than they seem to at the moment of hiring.

How many platforms, and which formats?

The shift to native video is the single biggest driver of the gap. One profile rarely holds strategy, shooting, editing and moderation across three channels at once.

Who owns it brand-side?

Even fully outsourced, social media needs someone who decides, approves and arbitrates. Without that role, no agency produces results. It is the most common cause of failure, well ahead of the choice of provider.

The hybrid model, the one most brands land on

In practice, the most common answer is neither one nor the other. An in-house social lead handles coordination, product knowledge, day-to-day moderation and the link with other departments. An agency takes strategy, heavy production and campaign peaks.

The split works because it puts each skill where it is most useful. It does need to be written down: who produces what, who approves, within what deadlines. An implicit split always ends in duplication or gaps, and it is a point to settle as early as the brief for your agency pitch.

The rhythm is then held in a shared tool, a subject we cover in our article on the social media content calendar.

How Sleeq sees it

At Sleeq, a creative social and influence agency based in Paris, the setups that hold over time are almost always hybrid. The brands we work best with have a dedicated contact in-house, even part-time.

We regularly advise against full outsourcing when a brand has nobody to own it. In that case the first step is not choosing an agency: it is naming an owner brand-side. If your need is specifically about creator campaigns, the market reads differently, as we detail in our overview of the best influence agencies in France.

FAQ on the in-house versus agency decision

Does an agency cost more than an in-house social media manager?

Not mechanically. The full cost of an in-house role goes past gross salary: employer contributions, tools, video production that often gets outsourced anyway, recruitment, training, and no cover during holidays. An agency pools several skills against one budget. The comparison only means something at equal scope, once you include everything the salary does not cover.

At what volume should you hire in-house?

When the production volume your strategy requires fills a full-time role on a lasting basis, and when that volume is stable across the year. Below that, the role will be under-used or its scope will drift into other marketing duties, which erodes publishing consistency. Count the real need per week, per platform and per format before deciding.

Can you start with an agency and bring it in-house later?

Yes, and it is a common path. The agency sets the strategy, the formats and the measurement framework, then the in-house role is created once the model is proven. For it to work, the handover has to be in the contract: ownership of accounts and access, transfer of templates and learnings, and an overlap period between the two setups.

What happens if nobody owns it brand-side?

It is the most common cause of failure in an outsourced setup. With no one to decide, approve and arbitrate, approvals drag, content loses its link to what the company is actually doing, and the whole thing runs out of steam. Before choosing an agency, name an internal owner, even part-time, with a clear mandate.

Is the hybrid model more expensive?

It costs a salary plus a retainer, so more than either option taken alone. But it compares badly with them, because it covers a wider scope and removes the single point of failure a lone role creates. For a brand where social is a core channel, it is usually the best ratio of cost to continuity.

Is a freelancer a viable alternative?

Yes, on a stable, limited scope with one clearly dominant skill. A freelancer fits a presence on one or two platforms with consistent formats. The limits are the same as any single role: no cover, little elasticity, and partial coverage of the strategy, production, editing and measurement chain.

In short

Neither in-house nor outsourced is the right answer in the abstract. Real volume, seasonality, sector complexity and the number of formats decide it for you. And in most cases where social is a serious channel, the answer is hybrid: an owner inside, production capacity outside.

To frame your own setup, tell us about your situation or explore our social media offer.