Social Media Marketing KPIs to Track
Follower count is the number every business owner checks first. It is also the least actionable number on the dashboard.
A business with 500 followers who regularly book and buy is worth more than a business with 10,000 followers who never interact. Tracking follower count without engagement rate is like tracking revenue without margin. The headline number looks fine until you look underneath it.
Here are the metrics that actually tell you whether your social media investment is working.
Engagement Rate
Formula: (total engagements divided by total followers) multiplied by 100.
For most Australian businesses, 1% to 3% is average. Above 3% is strong. Below 1% consistently means content is not connecting with the audience.
Engagement rate tells you whether the people who follow you care about what you post. A business can have declining follower growth and rising engagement rate, which usually means the content quality is improving but distribution is limited. Flip that, and you have a growing audience that is losing interest in the content. Engagement rate is the more actionable number.
Ask your social media manager for engagement rate, not likes. Likes are a subset of engagement. Engagement rate is the full picture.
Reach
Reach is the number of unique accounts that saw your content in a given period. Not impressions (how many times it was shown) but unique accounts.
Falling reach is an early signal that the algorithm is distributing your content less than it was before. The most common causes are a drop in posting consistency, a drop in engagement rate, or a shift in content format that the algorithm is not favouring.
Rising reach with flat engagement rate suggests you are reaching more people but the content is not converting them into engaged followers. Worth investigating what you are reaching them with.
Website Traffic From Social
Open GA4: go to Acquisition, then Traffic Acquisition, and filter by session medium set to social.
This is the clearest connection between social media activity and real business outcomes. If social media management is working, this number should grow month over month. If it is flat while follower count grows, something in the content strategy or bio link setup is not converting interest into action.
For restaurants using booking links in bio, for beauty salons using DM booking flows, and for e-commerce stores using link trees with UTM parameters: tracking website traffic from social is how you start to attribute real revenue to the social media spend.
Follower Growth Rate
Not the total follower count. The rate of change, month on month.
A consistent growth rate of 2 to 5% per month is healthy for most accounts at the small business scale. Flat or declining growth with high engagement usually means the content is resonating with the existing audience but is not reaching new people. The fix is usually paid amplification or a push on Reels to expand reach.
Rapid growth with declining engagement usually means audience quality is dropping: the new followers are not the right people for the business.
Story Completion Rate
How many people who start watching your Stories watch them through to the end.
Completion rate above 70% means the content holds attention. Below 50% means people are tapping through or exiting early. The specific Story where people drop off is the one to examine: is the content too slow to start, too long, or irrelevant to the audience?
Stories tend to reach existing followers more than feed posts. A high completion rate on Stories means your engaged audience is staying engaged. A low one means even your followers are tapping out.
Direct Business Outcomes
Bookings, appointments, phone calls, or online orders that can be attributed to social media.
Not every business can track this with precision. Restaurants using booking links in bio with UTM parameters can attribute reservations directly. Beauty salons using DM-to-book workflows can track appointment volume from Instagram specifically. E-commerce stores with properly tagged links can attribute every purchase back to the social channel that drove it.
If you cannot currently attribute direct business outcomes to social media, that is a setup problem worth fixing. It is almost always solvable with the right link tracking and a consistent bio link strategy.
The Full KPI Tracking Table
| Metric | Track It? | What It Actually Tells You | Target for Most Businesses |
|---|---|---|---|
| Follower count | Yes, in context only | Brand size and reach signal | Consistent month-on-month growth |
| Engagement rate | Yes, make it the primary metric | Whether content resonates | 1% to 3% and above |
| Reach | Yes | Algorithm distribution | Growing month on month |
| Website traffic from social | Yes, in GA4 | Direct business impact | Growing month on month |
| Impressions | Useful context | How often content appears | Track alongside reach |
| Story completion rate | Yes | Existing audience engagement quality | Above 70% |
| Follower growth rate | Yes | Audience acquisition speed | 2 to 5% monthly |
| Likes per post | Low priority | Surface-level engagement only | Track as part of engagement rate |
| Link in bio clicks | Yes | Conversion intent | Growing alongside traffic |
| Direct bookings from social | High priority where trackable | Revenue attribution | Track wherever setup allows |
How to Use These KPIs With Your Manager
Ask your social media manager to report on engagement rate, reach, website traffic from social, and follower growth rate every month. These four give you an honest picture of whether the account is growing and whether that growth translates to business impact.
Any manager who pushes back on reporting these metrics regularly is not accountable to results in a way you want.
Adelaide Socials provides monthly reporting across all these metrics for every client we manage. If you want to see what a real report looks like, get in touch.
FAQ
What is a good engagement rate for Instagram in Australia?
For most Australian businesses, 1% to 3% is an average engagement rate. Above 3% is strong. Below 1% consistently suggests content is not connecting with the audience. Hospitality and beauty accounts typically achieve higher rates than professional services accounts because the content category generates more natural interaction. A restaurant posting food photography will generally outperform an accounting firm posting office updates.
How do I track whether social media is driving sales?
Three approaches depending on your business type: link-in-bio tracking using a tool like Later or Linktree with UTM parameters on each link, GA4 social traffic reporting by filtering the Traffic Acquisition report by session medium, and direct attribution questions to new customers ("how did you hear about us?"). Combining all three gives the clearest picture of what social media is actually contributing.
Should I hold my social media manager accountable to these KPIs?
Yes. Ask for engagement rate, reach, website traffic from social, and follower growth rate in every monthly report. Ask for a written analysis alongside the numbers. A manager who can explain what moved and why is doing their job. A manager who sends screenshots without context is reporting, not managing.