CARBON ACCOUNTING

INCREASING PROFITS.

DECREASING CARBON

Carbon accounting is the process of calculating your organisation's carbon (CO2) and other greenhouse gas (GHG) emissions. Like financial accounting, carbon accounting measures and reflects the impact of your organisation's activities – however, instead of financial impact, it calculates the impact on the climate.

Carbon accounting offers organisations of all shapes and sizes some brilliant benefits. It: 

  • Identifies potential over-reliance on high carbon sectors in your supply chain – enabling you to transition away from these before increased costs hit
  • Ensures you remain creditworthy. Banks are beginning to look to decarbonise their loan books, meaning borrowers will need to reduce their own carbon emissions
  • Demonstrates genuine commitment to reducing your environmental impact
  • Makes you an attractive partner for larger companies who want their partners to be able to provide emissions data
  • Ensures you meet your legal and regulatory requirements in regions that require emissions reporting
  • Can save you money – by helping you identify energy-saving and waste-reduction opportunities
  • Allows for better planning and implementation of sustainability initiatives and improved supply chain management
    …and much more! For service-specific benefits, skip straight to our Services section.  

Why outsource your carbon accounting to us?

We’re a UK-based (but internationally-operating) B Corp accounting firm, making carbon accounting simple for micro and small organisations.

Outsourcing your carbon emission accounting to us means tapping into our specialised knowledge and data management expertise. So, you can rest assured that your carbon accounting data is accurate, compliant, and reliable – and focus your energies on your other goals instead.

Use the financial data you already have

We calculate your emissions using Sumday, a leading carbon accounting platform – and Xero’s official global carbon accounting partner. Conveniently, Sumday directly integrates with Xero to pull the financial data you already have, before using it to calculate your emissions data. It can also be used to create transparent reports, visualise results in an accessible way, and engage with – and support – your supply chain.

Your carbon emissions are measured according to global standards.

We provide carbon bookkeeping and carbon accounting services. Here are our prices at a glance:

CARBON ACCOUNTING PACKAGES

Service Includes Value Cost
Monthly carbon bookkeeping 300 carbon bookkeeping transactions and a Sumday licence.
  • Greenhouse Gas (GHG) protocol compliant.
  • Ensures accurate, efficient calculation, tracking and reporting of your carbon emissions data.
  • Carbon emissions insights inform strategic decisions and help mitigate risk.
  • Saves you time, money and stress.
£139
(per month)
Additional blocks of 300 carbon bookkeeping transactions. £99
(per month)

Carbon accounting services & pricing

Monthly carbon bookkeeping
Keystone carbon bookkeeping service

Includes: 300 carbon bookkeeping transactions and a Sumday license.

Benefits:

  • Ensures compliance with the Greenhouse Gas Protocol (GHG Protocol)
  • Provides accurate and efficient calculation, tracking and reporting of your carbon emissions data
  • Delivers insights that inform strategic decisions and help mitigate risk
  • Saves you time, money and stress

Cost: £139 per month.

Additional blocks of 300 carbon bookkeeping transactions

Includes: an additional 300 carbon bookkeeping transactions

Cost: £99 per month.

One-time & annual carbon accounting extras

Carbon accounting readiness assessment report

Includes: our recommended approach for the baseline carbon assessment and data collection improvement recommendations.

Benefits:

  • Ensures compliance with the Greenhouse Gas Protocol
  • Allows you to understand your capabilities and improve data quality, stakeholder alignment, risk mitigation, efficiency and strategic planning before fully committing to carbon accounting
  • Data improvement recommendations can make future assessments more accurate

Cost: £450 (one-off fee).

GHG assessment

Includes: calculation of your greenhouse gas emissions for Scope 1, 2, and 3 in line with the Greenhouse Gas Protocol.

Benefits:

  • Ensures compliance with the Greenhouse Gas Protocol
  • Enables you to understand and manage your environmental impact
  • Offers strategic, financial, and reputational benefits (maintain compliance, save costs, improve transparency, gain competitive advantages, and more!)

Cost: £250 per report (annual cost).

GHG inventory report

Includes: a detailed report demonstrating how your organisation prepared its GHG assessment. It features key intensity metrics and compares the current year against your baseline year.

Benefits:

  • Ensures compliance with international reporting standards (IFRS S2 Framework)
  • Showcases your organisation’s GHG assessment process, key intensity metrics, and year-on-year comparisons for external stakeholders
  • Offers enhanced transparency, risk management, operational efficiency, cost savings, strategic planning, competitive advantage, and reputational benefits

Cost: £750 per report (annual cost).

One-time & annual carbon accounting extras

Service Includes Value Cost
Carbon Accounting Readiness Assessment Report Our recommended approach for the baseline carbon assessment. Our data collection improvement recommendations.
  • Greenhouse Gas (GHG) protocol compliant.
  • Makes future assessments more accurate.
£450
(one-off fee)
GHG Assessment Calculation of your greenhouse gas emissions for scopes 1, 2 & 3 in line with the Greenhouse Gas Protocol.
  • Understand and manage your environmental impact.
  • Enjoy strategic, financial, and reputational benefits (maintain compliance, save costs, improve transparency, gain a competitive advantage, and more).
£250
per report
(annual cost)
GHG Inventory Report A detailed report demonstrating how your organization prepared its GHG Assessment, key intensity metrics, and how the current year compares against your baseline year.
  • Ensures compliance with international reporting standards.
  • Enhanced transparency, risk management, operational efficiency, and cost savings, strategic planning, competitive advantage, and reputational benefits.
£750
per report
(annual cost)

Still have questions?

If you’re still unsure about what you need (or want to know more about how we can help you manage your carbon emissions), just get in touch. You’ll find our enquiry form below.

WHO WE SUPPORT

CHARITIES

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CONSTRUCTION
COMPANIES

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FMCG BUSINESSES

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B CORPS

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SERVICE-BASED
BUSINESSES

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OVERSEAS COMPANIES

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Reviews

Andrew Wallis 

OBE

Unseen, UK

As the charity was rapidly growing we needed to improve the financial controls and reporting and then management to ensure we were and remain a well-run and financially knowledgeable organisation. By working with Portt & Co, we achieve this and more. As they are the experts, we don’t have to waste valuable time distracted from our mission as we know they have got our back always.

Warren Madlin

MadlinHanna

Knowing the need we had for a highly personal, flexible and credible accounting partner, a contact of ours put us in touch with Matt Portt. Ever since, there has been no reason to look elsewhere. I see Matt and the team as our safety blanket, making sure we never fall foul of the rules and constantly going beyond the call of duty.  I rely on Portt & Co to do what they are experts at, freeing up the time I desperately need to focus on my own expertise and deliver for my clients.

Harriot Pleydell-Bouverie

Mallow & Marsh

Portt & co have been fantastic for us. They started off just doing some basic book keeping for us, which they not only perfected, but went above and beyond and helping recommend areas we could improve / develop. We then brought them on to help us develop our reporting and monthly accounts and help manage all day to day finance – they’ve been instrumental in delivering excellent financial management for the business.

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