About The Sustainable Ledger
Where sustainability meets strategy—and profit meets purpose.
The SustainableLedger was founded with a clear belief:
Doing business better shouldn’t come at the cost of your bottom line.
We’re here to help Australian businesses move from overwhelm to ownership when it comes to sustainability—without drowning in buzzwords or breaking the budget.
Meet Leonie Martin
Founder | Strategic Advisor | Numbers + Impact Nerd
Leonie created The Sustainable Ledger after years of working in accounting, business advisory, and not-for-profit leadership.
She saw the same thing over and over again:
✅ Businesses wanting to make a difference
❌ But unclear on where to start—or how to make it pay off
With her background in finance and passion for sustainability, Leonie bridges the gap between purpose and practicality. She’s worked with professional service firms, community organisations, and growing SMEs to embed sustainable practices that actually stick—and actually make sense.
“I didn’t just want to talk about sustainability. I wanted to help businesses take action that improves their impact and their outcomes.”
What Makes Us Different?
We’re not sustainability consultants who only speak in theory.
We’re not accountants who only look at the bottom line.
We sit at the intersection—bringing together financial strategy, operational insight, and sustainable thinking to help you:
✔ Cut costs through smarter use of resources
✔ Communicate your impact with clarity and credibility
✔ Build a future-proof business that customers and teams believe in
Who We Work With
We partner with small to medium businesses, service firms, and community organisations that are:
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Committed to becoming more sustainable—but don’t want to waste time or money
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Tired of token efforts and want real, measurable change
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Looking for a clear, guided path to long-term success
Sound like you? 👉
