Skip to main content
Back to Glossary
Definition

Sustainable finance taxonomy

A sustainable finance taxonomy is a classification system that sets objectives and criteria for deciding which economic activities or financial products qualify as environmentally or socially sustainable.

What is a sustainable finance taxonomy?

A sustainable finance taxonomy turns policy objectives into activities, measures, and thresholds. Investors, lenders, issuers, and companies use it to classify activities or financial products, not an entire company. It may cover climate, other environmental goals, or social goals.

Why does a sustainable finance taxonomy matter to you?

A bank or investor may ask which activities are listed, which pass every condition, how much financing is attached to each, which taxonomy version you used, and what documents support the result. Using the wrong taxonomy or making a company-wide claim from one qualifying activity can produce an inaccurate financing or disclosure figure.

How does a sustainable finance taxonomy work?

Start with the taxonomy named in the request and record its version and date. Map each activity to a listed category. Eligibility usually means that the activity is included. Alignment means it also passes the applicable measures, thresholds, safeguards, and other conditions. Add the qualifying amounts and divide them by the denominator the request specifies, such as total capital expenditure. Keep the activity code, calculation, source data, criteria assessment, and approval.

What mistakes should you avoid?

  • Assuming that eligibility proves alignment.
  • Applying one jurisdiction's categories or thresholds to another taxonomy.
  • Calling a whole company sustainable because one activity qualifies.
  • Reporting a percentage without its denominator, taxonomy version, and supporting records.

Is every sustainable finance taxonomy the same?

No. Taxonomies differ in objectives, sectors, activity categories, thresholds, safeguards, colour labels, and whether their use is voluntary or mandatory. Apply the exact framework named by the lender, investor, product rule, or reporting requirement.

Does taxonomy alignment make my company sustainable?

No. Alignment applies to the assessed activities or financial products and the amounts connected to them. State the aligned share and the assessment boundary instead of turning a partial result into a company-wide claim.

Example

Suppose a hypothetical packaging manufacturer in Turkey receives a lender's hypothetical taxonomy, version dated 1 January 2027, for a EUR 10 million 2027 investment plan. Under that stated framework, a EUR 2 million rooftop-solar project is listed and passes every required condition. A EUR 3 million recycled-content production line is listed but lacks the framework's required water-protection documents, so it is eligible but not aligned. A EUR 5 million warehouse extension has no matching activity.

Classification check: eligible investment is EUR 2 million + EUR 3 million = EUR 5 million, or EUR 5 million / EUR 10 million = 50%. Aligned investment is EUR 2 million / EUR 10 million = 20%. The company should identify the taxonomy and version, retain the project tests, and label the other EUR 5 million out of scope rather than unsustainable unless that taxonomy says otherwise.

Where it comes up

Related terms

Sources

  • OECD

    Taxonomies as classification systems, their possible environmental, social, and governance scope, and differences between jurisdictions

    2026-08-21

  • EUR-Lex

    EU Taxonomy Articles 3 and 9 classification conditions and environmental objectives

    2026-08-21

  • Thailand Taxonomy Board and Bank of Thailand

    Traffic-light categories, eligibility, alignment, DNSH, MSS, and financial-flow uses

    2026-08-21

Last verified 2026-08-21

Ready to start?

Tell us what you need.

Bring us the sustainability request, reporting deadline, or strategy question you are facing. We will read it and suggest a practical first step, and the first conversation is free.

Sustainable finance taxonomy Definition | Keslio