Complete Science Based Targets initiative (SBTi) Guide 2026 for Fashion & Textiles

In 2015, when the Paris Agreement redrew the boundaries of global climate governance, most fashion companies didn’t immediately feel the impact. Decarbonisation still sounded abstract and targets were self-authored, loosely benchmarked, and rarely comparable across peers.

That distance has disappeared.

Today, in executive discussions across apparel one framework increasingly anchors climate decisions and that is the Science Based Targets initiative or SBTi. It turns climate goals into measurable, checkable targets.

SBTi emerged from a coalition of climate governance and disclosure institutions seeking standardisation. These were organisations that recognised voluntary pledges were insufficient without the alignment of methodology. Since 2015, SBTi has become the benchmark for credible corporate climate targets, affecting investor expectations, regulation, and supplier requirements.

For apparel companies, this is complicated. Most of their emissions don’t come from facilities they own, but from farms, fibre production, dyeing and finishing units, and manufacturing partners spread across regions and supplier tiers. As a result, setting a science-based target means reconsidering sourcing decisions, supplier relationships, material choices, and planning cycles.

This guide unpacks SBTi, tracing the initiative’s origins, clarifying its architecture, and translating its technical requirements into the realities of textile supply chains, from cotton fields to dye houses.

What is the SBTi?

The Science Based Targets initiative (SBTi) is a global body that enables businesses to set ambitious emissions reduction targets in line with the latest climate science. It is a collaboration between four heavyweights:

1. CDP (formerly the Carbon Disclosure Project)
2. The United Nations Global Compact (UNGC)
3. World Resources Institute (WRI)
4. World Wide Fund for Nature (WWF)

Rather than basing emissions reductions on what fits within a company’s budget, the SBTi frames them according to the level required to keep global warming within 1.5°C.

The Shift from Voluntary to Mandatory

Historically, joining the SBTi was a badge of honor for progressive brands like Patagonia, Kering (Gucci, Balenciaga), and Levi Strauss & Co. But, this has changed between 2023 and 2026.

While the SBTi itself remains a voluntary organisation, its framework is being hardcoded into law.

• EU CSRD (Corporate Sustainability Reporting Directive): Requires companies to disclose their transition plans. Aligning with SBTi is the most efficient way to prove compliance.
• CSDDD (Corporate Sustainability Due Diligence Directive): Large companies must adopt a plan to ensure their business model is compatible with limiting global warming to 1.5°C.

For the fashion industry, which contributes an estimated 2-8% of global greenhouse gas emissions, the pressure then becomes two fold. One is the regulatory pressure from governments and second is the litigation pressure regarding greenwashing. If you claim to be green but don’t have a science-based target, you are increasingly vulnerable to lawsuits.

Decoding Technical Jargon

The SBTi speaks a specific language that blends climate science with corporate accounting.

1. The Scopes

To set a target, you must measure your “GHG Inventory” (Greenhouse Gas Inventory). This is divided into three scopes:

• Scope 1 (Direct Emissions): Emissions from sources you own or control.
  • Example: The gas boilers used to heat your headquarters; the fuel used in company-owned delivery trucks; the manufacturing emissions if you own your own factories (rare in fashion).
• Scope 2 (Indirect Energy Emissions): Emissions from the generation of purchased energy.
  • Example: The electricity bill for your retail stores, warehouses, and offices.
• Scope 3 (Value Chain Emissions): Everything else. This is usually 96% to 98% of a fashion brand’s total footprint.
  • Upstream: Emissions from growing cotton, spinning yarn, dyeing fabric (Tier 2), and cut-and-sew (Tier 1) at factories you don’t own.
  • Downstream: Emissions from customers washing and drying their jeans (Use of Sold Products) and the eventual disposal of the garment.

2. Base Year vs. Target Year

• Base Year: The historical year you compare your reductions against. It must be a representative year (e.g., 2019 is common, though post-COVID years like 2022 are now standard).
• Target Year: The future date by which you will achieve your reduction.
  • Near-Term: Usually 5 to 10 years from submission (e.g., 2030).
  • Long-Term: The date you hit Net-Zero (usually 2040 or 2050).

3. Absolute Contraction vs. Physical Intensity

This is a critical distinction for growing fashion brands.

• Absolute Contraction: “We will reduce our total CO2e (carbon dioxide equivalent) by 42%.”
  • Implication: If your company doubles its revenue and production volume, you still have to cut total emissions. This forces you to decouple growth from impact. SBTi prefers this method.
• Physical Intensity (SDA): “We will reduce CO2e per t-shirt (or per unit of value added) by 50%.”
  • Implication: You can emit more total carbon if you produce more t-shirts, as long as each t-shirt is more efficient. SBTi is phasing this out for near-term targets in many contexts because the atmosphere cares about total carbon, not efficiency per shirt.

4. 1.5°C Pathway

The trajectory of emissions reduction required to keep global temperature rise below 1.5 degrees Celsius compared to pre-industrial levels. As of 2026, the SBTi essentially mandates that Scope 1 and 2 targets align with 1.5°C. 

Near-Term vs. Long-Term vs. Net-Zero

Confusion often arises between setting a target and going Net-Zero. These are two distinct steps in the SBTi ecosystem.

Element	Near-Term Targets (“Sprint”)	Long-Term Targets (“Marathon”)	Corporate Net-Zero Standard (“Destination”)
Purpose	To drive immediate action and halve emissions within this decade.	To determine the level of decarbonisation required by 2050 to align with global climate goals. This sets the final destination.	To certify that the company has achieved both Near-Term and Long-Term targets and neutralised any remaining emissions.
Timeframe	5–10 years from the date of submission (e.g., by 2030 or 2032).	By 2050 at the latest (though ambitious brands may aim for 2040).	2050 or sooner (this state is reached only once Long-Term targets are met).
Core Ambition	Typically requires a ~42% absolute reduction across Scopes 1 & 2 (aligned with 1.5°C) and ambitious Scope 3 reductions.	Requires a ~90% absolute reduction across all scopes to align with a 1.5°C future.	Deep Decarbonisation + Neutralisation. (90% reduction + 10% removal).
Scope 1 & 2	Must align with 1.5°C pathwayRequires rapid reduction (approx. 4.2% per year).	Must align with 1.5°C pathwayRequires near-total elimination (approx. 90% reduction).	Included in 90% total reduction requirement
Scope 3	Must align at minimum with “well-below 2°C” (1.5°C encouraged)Must cover at least 67% of total Scope 3 emissions.Absolute contraction or physical intensity allowed. Supplier engagement targets permitted.	Min. Ambition: 1.5°C.Must cover at least 90% of total Scope 3 emissions.Must result in absolute emissions going down. Supplier engagement targets are not allowed as a standalone metric for the long term.	Included in 90% total reduction requirementThe vast majority of value chain emissions must be eliminated before a Net-Zero claim is valid.
Residual Emissions	Not applicable at this stage	<10% of base year emissions.SBTi acknowledges that some emissions (e.g., specialised aviation, chemical processes) cannot yet be fully eliminated.	Remaining ~10% must be permanently removed from the atmosphere via carbon removals.
Carbon Removals / Offsets	Offsets cannot replace actual emissions reductions.	Removals cannot substitute the 90% reduction requirement.	90% must be reduced first.Required for the final 10%.Permanent carbon removals (Neutralisation) are mandatory to balance out residual emissions to claim Net-Zero.(e.g., direct air capture, reforestation)
Net-Zero Claim?	No	No.	Yes. Validated Net-Zero status is granted only when the Long-Term target is achieved and neutralisation is active.

Tackling Scope 3 in Fashion

If you work in fashion, Scope 3 is your biggest headache. It involves thousands of farmers, ginners, spinners, weavers, dyers, and logistics partners.

The 67% Rule (Near-Term)

For near-term targets, the SBTi offers a concession. You do not need to cover 100% of your Scope 3 emissions immediately. You must cover 67% of them.

• Strategy: Perform a screening of your inventory. Identify your hotspots.
• Example: If Fabric Production (Dyeing/Finishing) and Raw Material Extraction (Cotton farming) make up 70% of your footprint, you can set targets covering just those areas and ignore things like employee commuting or waste generated in operations for now.

The 90% Rule (Long-Term Net-Zero)

For the Net-Zero Standard (2050), the coverage requirement jumps to 90%. This means eventually, you have to measure and reduce almost everything.

Supplier Engagement Targets

For many fashion brands, calculating the exact carbon footprint of a Tier 4 spinning mill in say Pakistan or Bangladesh is currently impossible due to poor data. The SBTi allows a temporary workaround called Supplier Engagement Targets.

• What it means: Instead of committing to a 42% reduction in Scope 3 emissions, the fashion brand commits to ensuring that 80% of its suppliers, measured by spend, have set their own science-based targets by 2028.
• This pushes the burden of measurement and target setting onto the manufacturers (e.g., Arvind, Saitex, Yunus), who own the data.

Scope 3 Category 1: Purchased Goods & Services

This is the largest category for apparel. It includes:

• Raw Materials: The carbon emitted by sheep (methane) for wool, or by oil extraction for polyester.
• Manufacturing: The coal burned to boil water for dyeing fabric.
• Fashion brands should be moving toward preferred fibers (Recycled Poly, Organic Cotton) and Tier 2 Decarbonisation (helping factories switch from coal to solar/biomass) to hit these targets.

Scope 3 Category 11: Use of Sold Products

This is unique to industries where the product consumes energy.

• Indirect Use Phase: Your clothes don’t use electricity, but washing machines do. The SBTi considers “indirect use phase” (washing/drying) as optional for near-term target submission, but many brands include it to show holistic responsibility.
• Note: If you include this, shifting customer behavior (e.g., wash cold) becomes a climate strategy.

SBTi FLAG (Forest, Land, and Agriculture)

In 2023/2024, the SBTi introduced the FLAG Guidance. This rocked the fashion industry, specifically brands reliant on natural fibers.

What is FLAG?

Standard carbon accounting treats all carbon the same. FLAG acknowledges that land-based emissions (from biological processes) are different from fossil fuel emissions. It also recognises that land can sequester (absorb) carbon.

Who must set a FLAG Target?

You must set a separate FLAG target if:

Criteria	Requirement
Sector-Based Trigger	Mandatory if the company operates in a land-intensive sector (Food, Agriculture, Paper, Tobacco, Textile).
Emissions-Based Trigger	Mandatory if more than 20% of total emissions (Scopes 1, 2, and 3 combined) come from FLAG sources (Forest, Land, and Agriculture).

Does this apply to Fashion?
Yes. If you are a brand selling leather bags, cashmere knits, and cotton shirts, your land-based emissions likely exceed 20%. If you are a fast-fashion brand selling 100% polyester, it might not apply.

The Requirements

1. Split Targets: You cannot lump your leather emissions with your factory electricity emissions. You need one target for “Energy/Industry” and one target for “FLAG.”
2. Removals: In the FLAG sector, you can count carbon removals (e.g., regenerative agriculture that stores carbon in soil) toward your reduction target. This is the only area where removals count toward near-term reduction targets.
3. Zero Deforestation: You must commit to no-deforestation across your primary deforestation-linked commodities (leather, rubber, cattle, timber/viscose) with a target date no later than 2025.

Implementation Roadmap – How to Get Validated

If you are starting from zero, here is the chronological roadmap.

Phase 1: The Inventory (Months 1–4)

You cannot reduce what you cannot measure.

1. Define Organisational Boundary: Operational control (do you control the facility?) vs. Financial control. For retail brands, operational control is standard.
2. Scope 1 & 2 Data Collection: Gather utility bills for all offices and stores.
3. Scope 3 Screening: Use secondary data (like the Higg MSI, Ecoinvent, or textile databases) to estimate your supply chain impact based on the volume of materials you buy (e.g., “We bought 10,000 tons of cotton”). This tells you where your hotspots are.

Given the scale and complexity of multi-tier fashion supply chains, dedicated sustainability software platforms like GreenStitch are increasingly critical to centralise data, automate calculations, and translate raw procurement information into audit-ready carbon inventories.

Phase 2: The Commitment (Month 5)

1. Register online with the SBTi.
2. Submit the Commitment Letter.
3. Your company name appears on the SBTi website as “Committed.” You now have 24 months to submit your full targets.

Phase 3: Modeling the Targets (Months 6–12)

1. Choose your Base Year: Usually the most recent year with complete data.
2. Select Methodology:
   • Cross-Sector Absolute Reduction: The standard “4.2% reduction per year.” Safe, ambitious, recommended.
   • Sectoral Decarbonisation Approach (SDA): Specific to sectors like cement or power. Less relevant for fashion retail, but relevant for viscose producers.
3. Model Scope 3: Determine if you will use physical intensity or absolute contraction. Plan your Supplier Engagement targets.
4. FLAG Assessment: Calculate if FLAG emissions are >20%. If so, model separate FLAG targets.

Phase 4: Submission & Validation (Month 13–16)

1. Fill out the rigorous SBTi Target Submission Forms (Excel spreadsheets).
2. Upload to the SBTi portal.
3. Pay the Fee: As of 2025/26, fees range from $10,000+ for large enterprises (lower for SMEs).
4. The Audit: An SBTi technical expert will review your submission. They will ask difficult questions. They will ask for clarifications on your Scope 3 calculations.
5. Revisions: You usually have a few rounds of back-and-forth to fix errors.

Phase 5: Approval & Disclosure (Month 17+)

1. Once approved, you receive an official validation email.
2. You must publish the target on your website within 6 months.
3. Annual Reporting: You must report progress against these targets every year (usually in your Sustainability Report or via CDP).

The SME Route (Small & Medium Enterprises)

The SBTi recognises that a small independent clothing label does not have the resources of H&M or Nike.

Definition of SME:
Typically companies with fewer than 500 employees (though financial thresholds also apply).

The Streamlined Route:

• You don’t need to model 1.5°C pathways yourself.
• You select from pre-set targets (e.g., “Reduce Scope 1 & 2 by 42% by 2030”).
• SMEs are required to measure and reduce Scope 3, but they do not need to set a strict quantitative target to get validated. They just need to commit to measuring and reducing.
• The validation cost is significantly subsidised.

The Controversy Corner: Offsets and BVCM

This is the most misunderstood part of SBTi.

Can companies use Carbon Offsets to meet SBTi targets?

NO.
You cannot emit 100 tons of CO2, buy 100 tons of forestry credits, and claim you have met your Science-Based Target. SBTi requires abatement (stopping the emission from happening), not compensation (paying for it elsewhere).

What is BVCM (Beyond Value Chain Mitigation)?

While offsets don’t count toward your reduction target, the SBTi encourages companies to invest in BVCM.

• The logic is to make companies reduce their own emissions by 90%. While they are doing that, they are encouraged to invest money into climate projects (rainforest protection, direct air capture) to help the rest of the world.
• In the past, this was called offsetting. Now, it is viewed as a climate contribution. It is good practice, it is expected by consumers, but it is separate from your SBTi scorecard.

Environmental Attribute Certificates (EACs) & Scope 3

There is an ongoing fierce debate (as of 2025/2026) regarding the use of Environmental Attribute Certificates (like Carbon Credits) to abate Scope 3 emissions.

• Current Stance: Generally, you cannot use credits to meet Scope 3 targets. You must reduce the actual emissions in the supply chain.
• The Exception: RECs (Renewable Energy Certificates) are accepted for Scope 2 (electricity) if they meet high-quality criteria (e.g., Green-e, I-REC).

Common Pitfalls for Fashion Brands

1. Data Quality Paralysis
Brands often wait years to get perfect primary data from spinning mills.

• Solution: Start with secondary data (Higg/Ecoinvent). The SBTi allows this. Improve data quality over time. Do not let perfection stall your progress.

2. The Growth Trap
If a brand plans to grow revenue by 10% annually, achieving an absolute reduction of emissions is incredibly hard.

• Solution: You must invest in circular business models (resale, repair, rental) that generate revenue without producing new goods. Efficiency (better factories) will not outpace aggressive volume growth.

3. Ignoring the Use Phase
While optional for targets, ignoring consumer care leads to a disconnect between product design and reality.

• Solution: Design for cold washing and line drying.

Common Reasons Companies Fail SBTi Validation

Achieving SBTi validation is not a rubber-stamp process. It is a rigorous technical audit and many brands, even those with large sustainability teams, receive “Return for Adjustment” letters or outright rejections.

Here are the most common pitfalls that companies should avoid:

1. Scope 3 Underestimation

This is the number one cause of failure for apparel brands.

• Problem: Companies often exclude categories that seem too hard to measure, such as Category 1 (Purchased Goods & Services) or Category 11 (Use of Sold Products).
• If Scope 3 is more than 40% of your total emissions (which it almost always is in fashion), you must map and target at least 67% of it for near-term targets and 90% for long-term targets.
• A brand might calculate emissions from its cut-and-sew factories (Tier 1) but ignore the massive emissions from spinning and dyeing (Tier 2) or raw material extraction (Tier 4). The SBTi auditors look for hotspots and if your inventory shows 0% emissions from leather tanning but you sell leather bags, your submission will be flagged immediately.

2. Boundary Errors (What Did You Leave Out?)

The “Organisational Boundary” defines what counts as your company.

• Problem: Brands often confuse Operational Control vs. Financial Control.
• You must select one consolidation approach and stick to it. You cannot pick and choose to exclude high-emitting subsidiaries.
  • Franchises: If you are a global retailer with franchise stores, you might try to exclude them. However, if you have operational control over their branding and energy policies, SBTi often requires them to be included in Scope 1 & 2.
  • Leased Assets: Many brands claim their warehouses are “landlord controlled” to push electricity into Scope 3. If you pay the utility bill, it is usually Scope 2. Excluding these assets without valid justification leads to rejection.

3. Weak Data Quality & Secondary Data Over-Reliance

SBTi validation is an audit of your math. If the math is based on bad data, the target is invalid.

• Problem: Relying entirely on generic, global averages (spend-based data) rather than activity-based data
• While secondary data is allowed, it must be relevant. You cannot use a generic “Global Textile Industry” emission factor if you are sourcing specialty heavy-weight denim.
  • Spend-based calculation: “We spent $1M on cotton, so we emitted X tons.” This is often inaccurate because prices fluctuate (e.g., inflation) while carbon impact remains the same.
  • Auditors want to see activity data (e.g., “We bought 5,000 kg of cotton”). If your submission relies 100% on spend-based data for critical hotspots like fabric production, the SBTi may question the inventory’s accuracy.

4. Misaligned Base Year

Choosing the wrong starting line can invalidate the entire race.

• Problem: Using a year with unrepresentative data (e.g., 2020 or 2021, which were heavily skewed by COVID-19 lockdowns) or a year too far in the past.
• The base year must be representative of normal operations. For Near-Term targets, the base year generally cannot be earlier than 2015.
• If a brand chooses 2020 as a base year (when stores were closed and production halted), their emissions were artificially low. As business rebounded in 2023, their emissions “spiked,” making the reduction target impossible to hit mathematically. Conversely, choosing a peak emission year just to make the target look easier is also scrutinised.

5. Excluded Categories 

• Problem: Arbitrarily excluding Scope 3 categories because they seem small, without calculating a screening inventory first.
• You cannot simply say “Category 12 (End of Life) is immaterial.” You must calculate a high-level estimate to prove it is immaterial (less than 5% of Scope 3).
• Brands often ignore Category 4 (Upstream Transportation). However, if you air-freight fast fashion from Asia to Europe/US, this category is massive. Ignoring it triggers a rejection.

The Business Case

After all this, you might be wondering why go through this grueling process? Why spend months auditing carbon data?

1. Future-Proofing: Carbon taxes are coming (CBAM in Europe is just the start). Reducing emissions now reduces future tax liability.
2. Access to Capital: Banks are increasingly offering sustainability linked loans (SLLs) with lower interest rates to companies with validated SBTi targets.
3. Resilience: A supply chain powered by renewable energy is less susceptible to fossil fuel price volatility.
4. Survival: In a crowded market, consumers and regulators are raising the bar. SBTi is the only globally recognised metric of climate credibility.

FAQs

What is SBTi?

The Science Based Targets initiative (SBTi) is a global body that validates corporate climate targets against current climate science. A collaboration between CDP, the UN Global Compact, WRI, and WWF, it ensures companies set emissions reduction goals consistent with limiting global warming to 1.5°C, preventing greenwashing through rigorous mathematical verification.

What is the 5% rule?

The SBTi 5% rule dictates that companies cannot exclude more than 5% of their total emissions from their target boundary. This applies to Scope 1 and 2 combined, and separately to Scope 3. It ensures that the vast majority of a company’s carbon footprint is accounted for and actively managed.

How long does SBTi approval take?

Once submitted, the technical validation process typically takes 30 to 60 business days. However, due to high demand, booking a review slot can take several months. Companies should realistically plan for a 6–12 month timeline from reserving a slot to receiving final approval and publishing their targets.

Is SBTi the same as net zero?

No. SBTi is the organisation that validates climate targets. Net-zero is the destination where a company has reduced emissions by ~90% and neutralized the rest. You can set near-term SBTi targets without being net-zero. However, the SBTi Net-Zero Standard is the specific framework used to certify that a company has reached net-zero.

Does SBTi require Scope 3?

Yes, for most companies. If Scope 3 accounts for more than 40% of your total emissions (which is true for almost all fashion brands), you must set a target covering at least 67% of those emissions for near-term targets and 90% for long-term Net-Zero targets.

Is SBTi legally binding?

Technically, no; the SBTi is a voluntary initiative. However, regulations like the EU’s CSRD and CSDDD are making climate transition plans mandatory. Validated SBTi targets are widely accepted as the primary evidence for proving compliance with these emerging laws and protecting companies against greenwashing litigation.

Glossary of Key Terms

• Abatement: Assessing measures to reduce or eliminate GHG emissions.
• CO2e (Carbon Dioxide Equivalent): A metric measure used to compare the emissions from various greenhouse gases on the basis of their global-warming potential (e.g., Methane is 28x more potent than CO2, so 1 ton of Methane = 28 tons CO2e).
• GHG Protocol: The accounting standard used to measure emissions. This is the rulebook that SBTi relies on.
• Near-Term Target: A target to be achieved usually within 5–10 years.
• Net-Zero Standard: The SBTi framework requiring approx. 90% reduction by 2050.
• Residual Emissions: The emissions that remain after all technically and economically feasible reduction efforts have been implemented (usually <10%).
• Validation: The process where SBTi experts review and approve your targets.