Start carbon accounting with the same rigour as financial accounting

Save costs and build internal knowledge across your finance team

Report on carbon emissions with intuitive accounting software that aligns with global standards

Provide every company in your supply chain with free access to Sumday, so you can remove the barriers to improving the quality of your scope 3 data

Enterprise ready

Accounting software for a new era of carbon accounting

Bring carbon accounting in house and get ahead of the curve on reporting requirements with Sumday - audit ready accounting software that provides total transparency.

Need help setting your baseline emissions?

Engage your accountants and work together in Sumday. If your finance team need help getting started or as standards evolve, the Sumday Accounting Support team has you covered.

Better Together - built for you and your supply chain

Every business wants to know the emissions of their actual suppliers, rather than some industry averages.

You can ask suppliers to provide their actual carbon emissions with Sumday. Remove the barriers and offer 10 weeks of free training and software for each and every supplier to get started. Build capability across your community and improve the quality of your scope 3 emissions data at the same time.

Meet stakeholder expectations

Account for and report on carbon emissions

Produce auditable reporting from the outset, and lead by example

Dashboards to visualise where you stand 

How it works

Subscribe to Sumday.

Step 1

Train the team through the Sumday Academy

Step 2

Gather the data you’ll need and upload it (we can help)

Step 3

Start carbon accounting in Sumday

Step 4

Engage your supply chain and provide 10 weeks free access

Pricing for enterprise

Save costs and start carbon accounting internally or with the help of your advisors. Get in touch for pricing.

Why Sumday?

We do things a little differently

We're not going to charge you a small fortune to multiple your spend data by some averages and call it a footprint. Sumday empowers you internal team and your external accountants to do the carbon accounting properly. We also provide tangible support for you to start replacing averages with actuals.

Things you'll love

Training to help your team understand not just the how, but the why of carbon accounting

Collaborate with your accountants across the one platform to maintain a source of truth

Tangible support you can pass on to your suppliers, bolstering your ESG strategy


If we haven’t answered your question below, feel free to get in touch

Do you offer discounts for NFPs?

Yes! Sumday provides a 50% discount. Just email and let us know a little about your organisation.

Is access to the Sumday Accounting Support team and training included in our subscription?

Yes it is! We're here to help every step of the way. Carbon accounting may be overwhelming to your team members who are doing it for the first time. Sumday is their new best friend, providing training, tips, tricks, support and examples to help your organisation get started in a positive way.

Can Sumday help us communicate the value of carbon accounting to our suppliers?

Yes. You can pass on 10 weeks of free access to Sumday to every supplier, to help them get started (in many cases, they won't have a choice but to get on with carbon accounting, so you can add value through this support). Sumday supports you with materials and webinars to communicate the why behind carbon accounting to your supply chain.

How long does it take to train our finance team in carbon accounting?

The Introduction to Carbon Accounting Course consists of 18 chapters, with around 5 hours of videos and worked examples that may take 2 - 3 hours to complete in total. There's plenty of additional reading and notes to review - so the short answer is, it depends. Some people finish the course in a few days, some a few weeks. Taking 20 hours to complete this course wouldn't be unreasonable.

Here to help

Whether it’s product or accounting support, we have a dedicated team to guide you through the process. We’re here when you need us.