Overview
Sumday makes carbon accounting efficient and actionable for businesses and their suppliers.
⚡ Start right, now. It’s important to know where you’re at, and where to focus your efforts. Sumday gets you there, fast. Connect Xero, and leverage AI for a one-click snapshot of your emissions.
🪄 Account for emissions like magic. Smart suggestions and AI take the heavy lifting out of sorting through your transactions. Review the suggestions, and reconcile at speed with full transparency.
💰 Measure more than dollars. Import and input activity data (like kWh, kgs, litres etc) to increase your data accuracy and go from averages to actuals in a few clicks.
📊 Report with confidence and transparency. Generate compliance ready reports that you can stand behind. Exceed stakeholder expectations using AI to help communicate your emissions in a way they can understand.
📦 Supply chain engagement that works. Empower your suppliers with the tools, training and insights they need to confidently and accurately report on their emissions.
🎆 Share more than numbers. Create a profile that celebrates your journey, not just the destination. Highlight the actions you’re already taking and share your emissions in a profile that's yours to customise.
🧑🧑🧒🧒 Find success in numbers. With unlimited seats, invite your team members and advisors to help get the job done.
📚 Stop wondering, start learning. Access to Sumday means access to best in class training on all aspects of carbon accounting in our practical academy.
Sumday is today.

Sumday + Xero
Integrating with Xero empowers you to start carbon accounting at the transactional, supplier or general ledger account levels. Import your reconciled financial transactions into the carbon ledger to start carbon bookkeeping with ease.
*Promotional offer: Free 12-month Sumday subscription
For small businesses
For small businesses, the free 12-month subscription gives you:
- 12 months of access to Sumday if you sign up by 1 April 2026
- unlimited users
- the ability to create a customisable profile
- training for your team on carbon accounting via the Sumday Academy
- access to an accounting support help desk for guidance along the way
- access to Sumd[AI] to get answers on carbon accounting standards, draft reports and gaining deeper insights
For accounting and bookkeeping firms
For accounting and bookkeeping firms, the free 12-month subscription gives you:
- 12 months of access to Sumday that starts if you sign up by1 April 2026
- access for up to five staff members to collaborate on client emissions reporting
- online training on carbon accounting and GTM support via the Sumday Academy
- access to an accounting support help desk managed by CPAs for guidance when delivering new services to your clients
- access to Sumd[AI] to get answers on carbon accounting standards, drafting client communications and reports
- an account for your firm to do its own carbon accounting
Getting started
Getting started with Sumday and Xero is easy. Once signed into Sumday you can:
- Create an organisation in the Sumday platform.
- Connect your Sumday and Xero organisations and import transactions into Sumday.
- Start carbon accounting.