What Does a Social Media Manager Actually Do? (And Do You Need One or an Agency?)

If someone on your team manages your Instagram between other tasks, you already know the problem. Posts are inconsistent. Engagement is low. The strategy is basically 'post something and hope'. And nobody has time to fix it properly.

So you start looking at your options. You could hire a social media manager. You could outsource to a social media marketing agency. Or you could keep muddling through and hope the algorithm eventually rewards you.

Before you make that call, it helps to understand what a social media manager actually does — and how that differs from what an agency provides. This guide gives you that straight answer.

What Does a Social Media Manager Do?

A social media manager is responsible for planning, creating, publishing, and monitoring your brand's presence across social media platforms. It sounds simple. In practice, it is a full-time role that covers a wide range of skills.

On any given day, a good social media manager might be writing captions for next week's posts, responding to comments, creating graphics in Canva, reviewing analytics from last month's content, researching trending topics, briefing a video creator, and building a content calendar for the next quarter.

Here is a realistic picture of what the role covers.

Content Planning and Strategy

A social media manager develops the content strategy — deciding what to post, when to post it, and why. They build monthly or quarterly content calendars, plan campaign themes around product launches or events, and ensure every post aligns with the brand's voice and marketing goals. This is the thinking work that most businesses skip when social media gets handed to the intern.

Content Creation

Creating social media content means more than writing a caption. A social media manager typically designs graphics or briefs designers, writes copy adapted for each platform, edits short-form video, sources or directs photography, creates Stories and Reels, and produces carousel posts. Each platform has its own format, tone, and best practices — and good content looks native to each one.

Community Management

Community management is the daily work of keeping your audience engaged. This means responding to comments and DMs, engaging with followers, moderating brand mentions, handling customer service queries that come through social channels, and building relationships with loyal customers. This work is unglamorous but it directly affects how your brand is perceived.

Paid Social Advertising

Many social media manager roles now include basic paid social — setting up and managing Facebook and Instagram ad campaigns, creating ad creative, targeting audiences, managing budgets, and reporting on results. This is a distinct skill set from organic content management, and not every social media manager has deep expertise in paid social. Senior roles and specialist agencies tend to handle paid social better.

Analytics and Reporting

A social media manager tracks performance — reach, engagement rate, follower growth, link clicks, saves, story views, and ad metrics — and turns the data into insights. The best social media managers adjust their strategy based on what the data shows, not just what looks good.

What a Social Media Manager Does NOT Usually Do?

Understanding the limits of the role is just as important as understanding what it covers.

• A social media manager is not a full brand strategist — they execute within the brand direction you set.
• They are typically not a professional photographer, videographer, or graphic designer.
• They do not usually manage broader digital marketing channels (SEO, email, paid search).
• Most social media managers are generalists — not deep specialists in every platform.
• They cannot manufacture results without a clear brief, a real product, and a reasonable timeline.

⚠️ The biggest mistake Australian businesses make is expecting a junior social media manager to deliver agency-level strategy, content production, paid advertising, and analytics all at once. That is not one role — it is a team.

Social Media Manager vs Social Media Marketing Agency: What's the Difference?

This is where the real decision comes in. Both options can manage your social media, but they offer very different levels of support, expertise, and scalability.

Hiring an In-House Social Media Manager

An in-house social media manager is a single person who handles your content, engagement, and day-to-day social activity. They develop a strong understanding of your brand and work closely with your team. The downside is that you're limited to one person's skills, experience, and available time.

Working With a Social Media Marketing Agency

A social media marketing agency provides access to a team of specialists, including strategists, content creators, designers, and advertising experts. This gives you broader expertise, stronger campaign execution, and the flexibility to scale as your business grows.

So, Which Option Is Right for You?

Choose an in-house social media manager if you:

• Want someone fully immersed in your brand every day.
• Need direct communication and fast internal collaboration.
• Have enough work to justify a dedicated employee.

Choose a social media marketing agency if you:

• Want access to a team of specialists.
• Need expertise in content, strategy, and paid advertising.
• Want a scalable solution that can grow with your business.
• Prefer clear deliverables without hiring and managing staff.

In short, if you want dedicated brand involvement, an in-house manager may be the right fit. If you want a wider range of skills, advanced marketing support, and greater growth potential, a social media marketing agency is often the better choice.

When Does Hiring an In-House Social Media Manager Make Sense?

An in-house social media manager is the right choice for your business when certain conditions are met.

You Have a Strong Brand with High Content Volume

If your business generates a huge amount of content — daily product updates, live events, high-frequency community engagement — an in-house manager who lives and breathes your brand will always produce more authentic content than an external agency. Fashion brands, hospitality businesses, and retail chains with active communities often benefit most from having someone embedded in the business.

You Need Real-Time Responsiveness

If your social channels are a primary customer service touchpoint — handling complaints, answering product questions, managing crisis communications — an in-house social media manager can respond in real time. Agencies typically manage social in batches, not in real time.

Your Budget Supports Employment Costs

Hiring a social media manager in Australia costs $65,000 to $100,000 per year including salary, superannuation, tools, and management overhead. At $8,000 per month, this breaks even with a mid-tier agency retainer. If you have the budget and the workload to justify full-time employment, the in-house model can make sense.

When Does Hiring a Social Media Marketing Agency Make Sense?

For most Australian small and medium businesses, a social media marketing agency offers better value and better results than an in-house hire. Here is when the agency model wins clearly.

You Need a Full Team, Not One Person

A good social media marketing agency gives you access to a strategy director, a content creator, a graphic designer, a paid social specialist, and a reporting analyst — all for the cost of one mid-level employee. For the same investment, you get significantly more capability and depth.

Your Marketing Needs Are Broader Than One Channel

If you need social media alongside SEO, email marketing, or paid advertising, an agency that offers integrated digital marketing services can connect all of these channels into a coherent strategy. An in-house social media manager typically cannot do this alone.

You Want Results Without the HR Overhead

Hiring, onboarding, managing, and retaining an employee takes time and energy. An agency removes that overhead. You brief them, review their work, and pay a monthly fee. No sick leave, no performance reviews, no risk of someone walking out mid-campaign.

The Third Option: Do Both

Many Australian businesses use a hybrid model — a junior in-house social media coordinator who handles day-to-day posting, community management, and brand knowledge, supported by an agency that provides strategy, paid social expertise, and high-production content.

This model often delivers the best results because it combines the authenticity of in-house management with the specialist expertise of an agency.

How to Decide: 4 Questions to Ask

• What is our monthly marketing budget? Under $2,000 — freelancer or starter agency. $2,000–$5,000 — agency retainer. Over $5,000 — consider in-house or agency hybrid.
• How much content do we produce? High volume (daily) across multiple locations? In-house makes sense. Weekly or bi-weekly? Agency can handle it.
• Do we need paid social advertising expertise? If yes — an agency with a dedicated ads specialist will outperform a generalist social media manager every time.
• Is social media our primary revenue channel or a supporting channel? Primary channel = in-house or dedicated agency. Supporting channel = agency or part-time freelancer.

There is no universally right answer. The best choice depends on your budget, content volume, goals, and how much strategic input you need. The worst choice is leaving it to whoever has five spare minutes.

Frequently Asked Questions

Q 1. How much does a social media manager earn in Australia?

A social media manager in Australia earns between $60,000 and $95,000 per year depending on experience, location, and the scope of the role. Senior social media managers or social media marketing specialists with paid advertising expertise can earn $95,000 to $120,000 in major cities. Factor in superannuation, tools, training, and management time when comparing salary costs to agency retainer costs.

Q 2. What platforms should a social media manager be able to manage?

A competent social media manager should be confident managing Facebook, Instagram, and LinkedIn as a baseline. Experience with TikTok, YouTube, and Pinterest is increasingly expected for consumer brands. Platform expertise matters — social media best practices vary significantly between platforms, and a manager who treats them all the same will underperform on each.

Q 3. Is it better to hire a social media manager or outsource to an agency?

For most Australian small and medium businesses, outsourcing to a social media marketing agency delivers better value. An agency provides a full team of specialists — strategy, content creation, design, ads, and reporting — for a similar monthly cost to a junior employee's salary. The in-house model is better suited to high-volume brands, businesses with strong real-time community needs, or organisations that want deep brand immersion.

Q 4. What should a social media manager report on each month?

A good social media manager or agency should report monthly on: follower growth, reach and impressions, engagement rate, top-performing posts, website traffic from social channels, paid ad performance (if applicable), and any notable community interactions or issues. Reports should connect social media activity to business outcomes — not just vanity metrics.

Ready to get professional social media management for your Australian business? Talk to Ziff Digital's social media marketing team about what the right solution looks like for your goals and budget.