Instagram and Facebook are both owned by Meta, run on the same ads platform, and often deliver ads to both networks simultaneously. So why does it matter which one you focus on? Because the audiences, content formats, and buying behaviours are meaningfully different - and understanding those differences is the key to maximising your return on ad spend.
The Audience Difference
Facebook: Skews 25 - 55+. Strongest for local businesses, community groups, events, and lead generation. Users engage with longer-form content, articles, and group discussions.
Instagram: Skews 18 - 40. Strongest for visual brands, lifestyle products, fashion, food, and aspirational content. Users expect high-quality visuals and engage through Stories, Reels, and carousel posts.
When to Prioritise Instagram Ads
- Your product is visually compelling (fashion, food, design, travel)
- Your target audience is under 40
- You have strong visual assets (photography, video, user-generated content)
- You are building brand awareness and aspiration
- You sell directly through e-commerce
When to Prioritise Facebook Ads
- Your audience skews 35+ (medical, legal, financial services)
- You need lead generation forms (Facebook Lead Ads are excellent)
- You are promoting events, community content, or local services
- You want detailed targeting through groups and interests
- Your creative is more informational than visual
The Best Approach: Advantage+ Placements
In most cases, the smartest strategy is to let Meta's algorithm decide. Using Advantage+ placements, your ads are automatically shown on Facebook, Instagram, Messenger, and the Audience Network based on where they perform best. Our Facebook advertising team consistently sees 15 - 20% lower CPAs when using Advantage+ versus manual placement selection.
Creative Considerations
Even when using Advantage+ placements, optimise your creative for each platform:
- Instagram: 9:16 vertical video for Reels/Stories, polished visuals, minimal text overlay
- Facebook: 1:1 or 4:5 for feed, more text-heavy creative works, longer captions
- Both: Strong hook in first 3 seconds, clear call-to-action, mobile-first design
The Bottom Line
Instagram Ads and Facebook Ads are not an either/or decision - they are channels within a single platform that serve different purposes. The most effective social media advertising strategies use both platforms strategically, with creative tailored to each audience.
Not sure how to allocate your Meta Ads budget? Talk to our team for a personalised recommendation.
