Summary: SBTi validation provides third-party verification that climate targets align with 1.5°C pathways. Near-term targets require 4.2% annual reductions in Scopes 1 and 2. Net-zero targets require 90% reduction by 2050. This guide covers target-setting methodologies, the validation process, annual reporting requirements, and integration with ESRS E1, ISSB S2, and TCFD frameworks. Companies must calculate baseline emissions, choose reduction pathways, submit for validation, and report progress annually.
Why do companies pursue SBTi validation?
When Unilever announced its science-based climate targets in 2020, institutional investors took notice. Not because the targets were particularly aggressive (they were not), but because they carried the SBTi validation stamp.
That stamp meant something: third-party verification that the numbers aligned with what climate science actually requires to limit warming to 1.5°C.
Fast forward to 2026, and SBTi validation has become table stakes for serious corporate climate action. Investors managing over USD 14 trillion through the Net Zero Asset Managers initiative now expect it from portfolio companies. Green bond issuers need it. ESG fund managers screen for it.
The EU’s Corporate Sustainability Reporting Directive requires climate targets aligned with Paris Agreement goals. SBTi provides the most widely recognised framework for demonstrating that alignment.
What practical benefits does SBTi validation deliver?
SBTi validation solves a credibility problem. When a company announces a climate target without external verification, investors and stakeholders have no way to assess whether it is ambitious enough to matter or just greenwashing. SBTi targets remove that ambiguity.
Companies with validated targets report better access to sustainable finance. The European Union’s Green Bond Standard expects issuers to have science-based targets or explain why they do not. Some customers now require SBTi targets from vendors before signing contracts.
But the real value is strategic. Setting an SBTi target forces companies to confront their actual emissions profile, identify reduction opportunities across the value chain, and build internal capacity for carbon accounting. The validation process acts as a quality check on data and methodology before regulators or auditors get involved.
What are the two types of SBTi targets?
SBTi offers two target pathways. Most companies start with near-term targets, then add long-term net-zero commitments later.
What are near-term targets?
Near-term targets cover 5 to 10 years. They require absolute reductions in Scope 1 and Scope 2 emissions.
For a 1.5°C pathway, companies must reduce emissions by at least 4.2% per year from a base year. For a well-below 2°C pathway, the minimum is 2.5% annually.
If Scope 3 emissions exceed 40% of combined Scope 1, 2, and 3 totals, companies must also set a Scope 3 target. This target must cover at least 67% of total Scope 3 emissions, with a minimum reduction of 2.5% per year.
Example: A manufacturer with 10,000 tonnes Scope 1+2 and 30,000 tonnes Scope 3 (75% of total) must set targets for both Scopes 1+2 and Scope 3 covering at least 20,000 tonnes (67% of 30,000).
What are long-term net-zero targets?
Long-term net-zero targets require reaching net-zero by 2050. This means reducing Scope 1, 2, and relevant Scope 3 emissions by at least 90% by 2050 to align with the 1.5°C target.
Any remaining emissions (the final 5% to 10%) must be neutralised through permanent carbon removal. Engineered removal (direct air capture, biochar with geological storage) or high-quality nature-based removal (afforestation with 100-year legal protection) are acceptable.
The SBTi Corporate Net-Zero Standard explicitly prohibits the use of carbon offsets to meet near-term targets. You cannot buy credits to avoid actual emission reductions. Offsets are only allowed for residual emissions after achieving 90% reductions.
Which target-setting approach should you use?
SBTi offers three main approaches for setting targets.
What is the Absolute Contraction Approach?
Most companies use the Absolute Contraction Approach (ACA). This requires reducing absolute emissions at 4.2% per year from a chosen base year.
Simple math. No adjustments for production growth. If your base year emissions are 100,000 tonnes, your Year 5 target is 81,100 tonnes (4.2% annual reduction compounded).
What is the Sectoral Decarbonization Approach?
The Sectoral Decarbonization Approach (SDA) uses sector-specific emission intensity pathways. It works for homogeneous industries like cement, steel, and power generation, where production is measured in standard units (tonnes of cement, megawatt-hours of electricity).
Companies in these sectors can grow production while reducing emissions intensity at the required rate. A cement producer increasing output from 1 million to 1.5 million tonnes can still meet SBTi targets if emissions per tonne of cement fall fast enough.
Can you use intensity-based targets?
An intensity-based approach is available for limited sectors where significant production growth makes absolute targets impractical. This includes financial services, technology services, and some transport subsectors.
However, SBTi scrutinises intensity targets more closely because they can mask absolute increases in emissions. A logistics company reducing emissions per tonne-kilometer by 4% annually while doubling freight volume still increases absolute emissions. Intensity targets are harder to validate and less credible to investors.
How do you set SBTi targets step by step?
The process starts with a commitment letter declaring your intent to set science-based targets. This letter is valid for 24 months, giving you time to complete the work.
Step 1: Choose a base year
The base year must meet three criteria. It must be within 10 years of the target start date. It must represent typical operations (not an unusual high or low year due to acquisitions, facility closures, or pandemic shutdowns). It must have high-quality data for all scopes.
Most companies choose a recent year with complete emissions data. 2019 is popular because it predates pandemic disruptions and has good data availability.
Step 2: Calculate baseline emissions
Use GHG Protocol methodology to calculate Scope 1, Scope 2 (both location-based and market-based), and all material Scope 3 categories for your base year.
This is where most companies struggle. Scope 3 data is hard to collect. Emission factors are imperfect. Boundary decisions require judgment. Suppliers do not track emissions. Customer use data does not exist.
Start with spend-based estimates using economic input-output models, then improve data quality over time by collecting supplier-specific data.
Step 3: Define your reduction ambition
A 1.5°C pathway (4.2% annual reduction) is increasingly expected by investors and preferred for credibility. The well-below 2°C pathway (2.5% annual) is less ambitious but still considered science-based.
Most companies setting targets in 2026 choose 1.5°C pathways. The 2°C pathway is becoming less acceptable to investors and stakeholders who expect alignment with the most ambitious Paris Agreement goal.
Step 4: Draft your targets
Specify the target year (5 to 10 years from now), scope coverage (Scopes 1+2 always, Scope 3 if material), target type (absolute or intensity), ambition level (1.5°C or well-below 2°C), and base year recalculation policy.
Be specific about what is included and what is excluded. “We will reduce absolute Scope 1 and 2 GHG emissions 42% by 2030 from a 2020 base year” is clear. “We aim to significantly reduce emissions” is not.
Step 5: Submit for validation
Upload your targets, methodology documentation, and supporting evidence through the SBTi portal. Include your GHG inventory showing base year emissions by scope, calculation methodology with emission factors and data sources, assumptions for Scope 3 estimation, and organizational boundary definition.
What happens during validation?
SBTi typically reviews submissions within 12 to 16 weeks. Analysts assess whether your methodology aligns with SBTi criteria. They may request clarification on data sources or boundary decisions. They provide feedback on ambition levels.
Upon approval, your targets are published on the SBTi website and you receive a validation letter.
What are common reasons for rejection?
Common reasons include ambition levels below SBTi criteria (reduction rate too slow), exclusion of Scope 3 emissions when they exceed 40% of combined emissions, inconsistent boundaries between the base year and target coverage, and base year emissions that are not credible due to missing sources or outdated emission factors.
I have seen companies go through three rounds of revision because they underestimated Scope 3 emissions or used industry-average emission factors when primary data was available. SBTi analysts know the common shortcuts and will push back.
What must validated companies report annually?
Validation is not the finish line. Validated companies must maintain ongoing transparency.
Report emissions annually by scope for the base year and each subsequent year. Disclose methodology and boundary changes. Submit annual progress reports to SBTi through CDP or directly through the SBTi portal.
When must you recalculate the base year?
Base year emissions must be recalculated when significant acquisitions or divestitures change the organizational boundary (threshold: 5% of base year emissions), when calculation methodology changes materially (new emission factors, improved data), or when significant errors (greater than 5% of total emissions) are discovered.
Document all recalculations transparently. “Base year recalculated from 100,000 to 115,000 tonnes to reflect 2024 acquisition of Company X.”
Can you revise targets after validation?
Targets may be revised with SBTi approval for significant business model changes, SBTi methodology updates, or major M&A activity.
However, revised targets must still meet SBTi criteria. You cannot lower ambition without justification. If you acquired a high-emission company and need to revise targets upward to maintain the same reduction rate, SBTi will accept this. If you want to weaken targets because reduction is harder than expected, they will not.
How do SBTi targets connect to ESRS, ISSB, and TCFD?
SBTi-validated targets provide a credible basis for climate target disclosure across multiple frameworks.
ESRS E1 requires companies to disclose climate targets aligned with Paris Agreement goals. SBTi validation satisfies this requirement.
IFRS S2 requires disclosure of GHG reduction targets. SBTi targets fulfil this requirement when accompanied by progress metrics.
TCFD expects companies to disclose climate targets and progress. SBTi targets satisfy TCFD target disclosure expectations.
The disclosure requirements overlap significantly. Companies should disclose the target methodology, the base-year emissions, annual progress against targets, alignment with the transition plan, and the connection to capital allocation decisions across all three frameworks. One well-documented target set can satisfy multiple reporting obligations.
What changed in SBTi requirements in 2026?
SBTi tightened several requirements.
Stricter Scope 3 criteria: When Scope 3 exceeds 40% of the combined total, companies must set targets for all categories that represent significant emissions, not just the largest ones. Previously, companies could cherry-pick the easiest categories to reduce.
Corporate Net-Zero Standard evolution: The standard continues to evolve with sector-specific pathways (power, cement, steel, oil and gas), clarification of carbon removal quality for neutralisation (engineered removal preferred over nature-based), and tighter definitions of residual emissions (what counts as genuinely hard-to-eliminate).
Financial sector guidance: Financial institutions now have comprehensive guidance covering portfolio GHG intensity targets, financed emissions reporting using PCAF methodology, and target-setting for investment portfolios (sovereign bonds, corporate bonds, listed equity, real estate, infrastructure).
Frequently Asked Questions
How long does SBTi validation take?
SBTi targets 12 to 16 weeks for review, but complex submissions or clarification requests can extend this to 6 months. Companies with clean data, clear methodology, and ambitious targets move faster. Companies with data quality issues, weak Scope 3 coverage, or borderline ambition face multiple rounds of revision.
Can small companies set SBTi targets?
Yes. SBTi offers a streamlined pathway for small and medium enterprises. SMEs can use simplified submission templates and are not required to set Scope 3 targets regardless of materiality. However, investors and customers increasingly expect Scope 3 coverage even from SMEs in high-impact sectors.
What happens if you miss your SBTi target?
SBTi does not penalise companies for missing interim milestones, but requires transparent disclosure of progress and explanations for underperformance. Repeated failure to make progress triggers scrutiny from investors and can lead to removal from SBTi databases if companies abandon targets without justification. The reputational cost of public failure is usually enough to maintain commitment.
Should you set 1.5°C or 2°C targets?
1.5°C is increasingly expected. The 2°C pathway is becoming less acceptable to investors who expect companies to align with the most ambitious Paris Agreement goal. If your business model cannot sustain 4.2% annual reductions, reconsider the business model rather than choosing a weaker target. Investors interpret 2°C targets as lack of ambition or weak climate governance.
How much does SBTi validation cost?
SBTi charges validation fees based on company revenue. SMEs pay USD 1,000. Companies with revenue under USD 100 million pay USD 4,750. Companies with revenue over USD 100 million pay USD 9,500. These fees cover the validation process. Companies also incur internal costs (carbon accounting software, consultant support, staff time) typically ranging from USD 50,000 to USD 200,000 for first-time target setters.