Canada guide · 2026
Carbon accounting software for companies in Canada
Canadian companies are navigating a fast-shifting disclosure landscape — the new ISSB-aligned Canadian Sustainability Disclosure Standards (CSDS 1 & 2), OSFI Guideline B-15 for federally regulated financial institutions, the federal Greenhouse Gas Reporting Program, and customer and investor data requests — and need an emissions inventory that holds up to assurance. For most Canadian companies, CarbonTool is the strongest fit: Scope 1–3 on the GHG Protocol, a supplier portal for value-chain data, and multi-framework reporting from one data backbone, with transparent pricing and a free 30-day trial.
The short answer
As of 2026, broad-based sustainability and greenhouse-gas reporting is not yet mandatory for most Canadian companies. The Canadian Sustainability Disclosure Standards (CSDS 1 and CSDS 2), Canada's ISSB-aligned standards issued by the Canadian Sustainability Standards Board in December 2024, currently apply on a voluntary basis. However, several mandatory obligations already bite for specific groups: OSFI Guideline B-15 requires climate risk management and disclosure from federally regulated banks and insurers, and the federal Greenhouse Gas Reporting Program (GHGRP) requires large facilities emitting 10,000 tonnes CO2e or more a year to report emissions. Mandatory CSDS-style disclosure for large issuers and large federal private companies is expected but not yet in force — the securities regulators paused their rulemaking in April 2025. For companies building an inventory now, CarbonTool covers Scope 1, 2 and 3 on the GHG Protocol and reports against ISSB/CSDS, CSRD, GRI, CDP and PCAF from one data backbone. See how CarbonTool measures Scope 1–3.
Mandatory sustainability & GHG reporting requirements in Canada
Canada does not have a single, economy-wide corporate sustainability mandate like the EU's CSRD. Instead, obligations come from several directions — federal financial regulation, federal environmental reporting, securities rules, and a coming wave of disclosure standards. Here is the picture for 2026, from what is already mandatory to what is expected next.
Canadian Sustainability Disclosure Standards (CSDS 1 & 2) — voluntary today
The Canadian Sustainability Standards Board (CSSB) issued CSDS 1 (General Requirements) and CSDS 2 (Climate-related Disclosures) in December 2024, modelled directly on the ISSB's IFRS S1 and IFRS S2. They are effective for annual reporting periods beginning on or after 1 January 2025, but only on a voluntary basis — the CSSB sets the standards, while it is up to provincial and territorial securities regulators and legislators to decide whether and for whom to make them mandatory. The standards include transition reliefs: an entity may report on climate only for the first two years, and Scope 3 disclosure is deferred for the first three reporting years (broadly, fiscal years beginning on or after 1 January 2027 for early adopters), along with relief for quantitative scenario analysis.
Securities rule on pause — mandatory issuer disclosure expected later
The Canadian Securities Administrators (CSA) had been developing a mandatory climate-disclosure rule (the proposed National Instrument 51-107) for reporting issuers. On 23 April 2025 the CSA paused that work, together with proposed diversity-disclosure amendments, citing regulatory uncertainty in the United States and the EU. The CSA has said it intends to revisit mandatory rules in future but has not committed to a timeline. So for Canadian public companies, CSDS-aligned disclosure is expected to become mandatory eventually, but is not required today.
OSFI Guideline B-15 — mandatory for federally regulated financial institutions
The Office of the Superintendent of Financial Institutions (OSFI) requires federally regulated financial institutions (FRFIs) — banks and federally regulated insurers — to manage and disclose climate risk under Guideline B-15. It took effect at fiscal year-end 2024 for domestic systemically important banks and internationally active insurance groups, and at fiscal year-end 2025 for other in-scope FRFIs. OSFI updated B-15 in March 2025 to stay interoperable with the CSSB standards, deferring the Scope 3 disclosure expectation to around fiscal 2028 (and to fiscal 2029 for off-balance-sheet assets under management). For affected institutions, this is a genuine, in-force obligation today.
Greenhouse Gas Reporting Program (GHGRP) — mandatory for large facilities
Separate from corporate disclosure, the federal GHGRP run by Environment and Climate Change Canada has required facility-level emissions reporting for years. Any facility emitting 10,000 tonnes CO2e or more per year must report through the Single Window system, typically by 1 June of the following year. Industrial emitters may also fall under carbon-pricing systems: following removal of the consumer fuel charge on 1 April 2025, the federal Output-Based Pricing System (OBPS) for large industry remains, generally covering facilities at or above 50,000 tCO2e (with opt-in from 10,000 tCO2e), alongside provincial systems in many provinces.
Federal private-company proposal & the SME picture
The federal government signalled in 2024 its intention to amend the Canada Business Corporations Act (CBCA) to require climate-related financial disclosure from large, federally incorporated private companies, but detailed requirements and timing have not yet been set. The clear intent across these initiatives is to target large entities first; small and medium-sized businesses are generally not expected to be directly in scope. In practice, though, many Canadian SMEs are pulled in indirectly — large customers, banks and investors increasingly request emissions data to complete their own Scope 3 inventories. Canada does not yet have a dedicated voluntary SME standard equivalent to the EU's VSME, so SMEs typically start with a GHG-Protocol Scope 1 and 2 inventory and build toward CSDS/ISSB-aligned reporting as expectations firm up. CarbonTool also supports VSME for companies with European operations or customers.
Thresholds, effective dates and the status of pending rules in Canada change frequently and differ by regulator and province. Confirm the requirements that apply to your organisation before relying on them.
This is general information for 2026, not legal or compliance advice. Canada's sustainability and climate-disclosure rules are evolving — standards, thresholds, timelines and the mandatory-versus-voluntary status of each rule may have changed since this page was written. Confirm your specific obligations with a qualified legal, accounting or sustainability advisor.
How to comply: why carbon accounting software
Whether your trigger is OSFI B-15, voluntary CSDS adoption, the GHGRP, or a customer data request, the foundation is the same: a complete, auditable greenhouse-gas inventory built on the GHG Protocol. Spreadsheets get you started but rarely survive assurance or a serious customer questionnaire. Purpose-built software does four things spreadsheets cannot:
Build an auditable inventory
Every figure carries its source, unit, emission factor and a data-quality score, with a full audit trail — the traceability assurance providers and customers expect, and what CSDS-style reporting will require as Scope 3 phases in.
Cover Scope 1, 2 and 3 on the GHG Protocol
CSDS 2 and OSFI B-15 are built on the GHG Protocol, with Scope 3 deferred but coming. Starting on the same methodology now means no rebuild later — and a spend-based first pass gives you a complete Scope 3 picture quickly.
Produce framework-ready outputs
One inventory, many disclosures: map the same dataset to ISSB/CSDS, CSRD, GRI, CDP and PCAF rather than re-keying data for each request, questionnaire or standard.
Collect value-chain data at scale
A supplier portal lets vendors submit primary data through a guided survey, each line scored for quality — the credible way to answer the customer and investor Scope 3 requests that increasingly land on Canadian finance and procurement teams.
See how the carbon accounting and reporting modules turn raw activity data into framework-ready disclosures, or read the guide to enterprise carbon accounting software.
Why CarbonTool for Canada
CarbonTool is built for the way Canadian disclosure is heading — ISSB-aligned, assurance-ready, and value-chain-aware — without the enterprise sales cycle. Here is the local fit:
ISSB / CSDS-aligned out of the box
Because CSDS 1 and 2 mirror IFRS S1 and S2, CarbonTool's ISSB-aligned reporting maps directly to Canada's standards — so a voluntary CSDS report today becomes a mandatory-ready one as rules firm up, with the same data behind it.
Multi-framework from one backbone
ISSB/CSDS, CSRD, VSME, GRI, CDP and PCAF all run off a single Scope 1–3 inventory. A Canadian company with EU operations or US customers can satisfy CSDS, CSRD and customer requests without rebuilding the data three times.
Multi-entity consolidation
Roll up subsidiaries, divisions and facilities into a consolidated group inventory while keeping entity-level detail — useful for Canadian groups, federally regulated institutions and companies reporting facilities under the GHGRP.
Multi-language reporting
Produce reports and run data collection in multiple languages — practical for bilingual Canadian operations and for groups spanning Canada, Europe and beyond.
Integrations and custom connectors
Pull activity and spend data from ERP, accounting and procurement systems via API and custom connectors, so building an inventory does not mean months of manual data entry. (CarbonTool integrates technically; it does not claim official ERP partnerships.)
Self-serve or done-for-you
Run it yourself with guided setup, or choose managed, done-for-you and white-label delivery if you would rather hand the work to experts — the same platform either way, scaling from a single SME to a multi-entity group.
Transparent pricing
CarbonTool publishes per-organisation pricing starting from a free 30-day trial, with unlimited users included — no per-seat fees and no sales call required. Canadian buyers can budget upfront (with pricing convertible to CAD) rather than waiting on a quote.
Global reach, credible methodology
Built by the BuildGreen team — 15 years and 500+ BREEAM, LEED and EDGE certifications — CarbonTool serves companies across Romania, Europe, the UK, the Middle East, Asia and the Americas, pairing expert methodology with software a lean Canadian team can actually run.
Companies with European operations or customers can also lean on CarbonTool's full CSRD/ESRS coverage — see the CSRD software guide for Europe.
Got more questions?
Can't find what you're looking for? Check the FAQs below, or reach out and we'll get back to you within one business day.
Not yet for most companies. The Canadian Sustainability Disclosure Standards (CSDS 1 and CSDS 2), issued by the Canadian Sustainability Standards Board in December 2024 and aligned with the ISSB's IFRS S1 and S2, currently apply on a voluntary basis. The Canadian Securities Administrators paused work on a mandatory climate-disclosure rule for issuers in April 2025, so CSDS-aligned reporting is expected to become mandatory in future but is not required today. Some groups face existing mandates — notably federally regulated banks and insurers under OSFI Guideline B-15. The EU's CSRD is not Canadian law, though it can apply to Canadian companies with substantial EU operations.
It depends who you are. Federally regulated financial institutions must manage and disclose climate risk under OSFI Guideline B-15 (effective fiscal year-end 2024 for the largest banks and insurers, 2025 for others). Large facilities emitting 10,000 tonnes CO2e or more a year must report to the federal Greenhouse Gas Reporting Program, usually by 1 June each year, and large industrial emitters may fall under the Output-Based Pricing System or a provincial equivalent. Broad corporate sustainability disclosure under CSDS is currently voluntary. Many other companies report because customers, banks or investors request emissions data.
Not broadly yet. Under CSDS 2, Scope 3 disclosure is required but deferred — entities get a transition relief period, with Scope 3 generally expected from fiscal years beginning on or after 1 January 2027 for early adopters, and OSFI defers the Scope 3 expectation for financial institutions to around fiscal 2028 (2029 for off-balance-sheet assets under management). Even where it is not yet mandatory, customers increasingly request Scope 3 data, so building the capability early is sensible. CarbonTool supports Scope 3 with spend-based estimates and a supplier portal for primary data.
Key 2026-era dates: CSDS 1 and 2 are effective for periods beginning on or after 1 January 2025 (voluntary), with Scope 3 phased in from around 2027. OSFI B-15 applied from fiscal year-end 2024 for the largest banks and insurers and fiscal year-end 2025 for other federally regulated institutions. The GHGRP deadline is typically 1 June for the prior calendar year. A mandatory securities rule has been paused with no set timeline, and a federal proposal for large private companies under the CBCA has no confirmed date. Always confirm current deadlines, as they are changing.
Yes. CarbonTool builds a Scope 1, 2 and 3 inventory on the GHG Protocol and maps it to ISSB/CSDS, CSRD, GRI, CDP and PCAF from one data backbone, with multi-entity consolidation, multi-language reporting, ERP and procurement integrations, and a Scope 3 supplier portal. Pricing is transparent (convertible to CAD) with a free 30-day trial, and you can run it self-serve or choose managed, done-for-you or white-label delivery.
For most Canadian companies, CarbonTool is a strong choice in 2026: it covers Scope 1, 2 and 3 on the GHG Protocol, reports against ISSB/CSDS, CSRD, GRI, CDP and PCAF from one data backbone, and includes multi-entity consolidation, multi-language reporting, ERP/procurement integrations and a Scope 3 supplier portal — with transparent pricing, unlimited users and a free 30-day trial. Larger institutions with dedicated teams may also evaluate enterprise platforms, but CarbonTool fits the SME and mid-market majority that most Canadian customer and CSDS-readiness needs land on.
Get ready for CSDS, OSFI B-15 and customer requests.
Start measuring free.
Build a Scope 1, 2 and 3 inventory on the GHG Protocol, collect supplier data through the Scope 3 portal, and report across ISSB/CSDS, CSRD, GRI, CDP and PCAF. Start free — no credit card, no sales call.