What is an SLL?
A Sustainability-Linked Loan (SLL) is a loan whose economic characteristics (typically the interest margin) vary based on whether the borrower achieves predefined sustainability performance targets (SPTs) measured by selected key performance indicators (KPIs). Unlike green loans, SLLs are not restricted by use of proceeds — funds may be used for general corporate purposes. The framework is governed by the Sustainability-Linked Loan Principles (SLLP) issued by LMA/LSTA/APLMA, most recently updated in 2023.
Five core components
- Selection of KPIs: material, externally verifiable, comparable.
- Calibration of SPTs: ambitious, beyond business-as-usual, science-aligned where applicable, with disclosed baselines.
- Loan characteristics: margin step-up/step-down linked to SPT achievement; symmetrical or asymmetrical.
- Reporting: annual reporting on KPI performance.
- Verification: independent external verification of SPT performance (at least annually).
Common KPIs
- GHG emissions reduction (absolute or intensity).
- Renewable energy share.
- Water consumption / circular economy metrics.
- Workplace safety, diversity, supply chain audits.
- ESG rating uplift (less preferred — viewed as input not outcome).
Greenwashing risk and 2023 SLLP update
The 2023 SLLP update tightened requirements following critique that early SLLs had weak/unambitious SPTs. Key reforms: science-aligned ambition expected for climate KPIs, robust external verification, transparency on SPT calibration methodology, and disclosure when SPTs are met or missed.
Negotiating SLL mechanics
Sustainability-linked loans price margin against KPI performance, which turns ESG data into a credit term. Borrower-side negotiation points: KPIs the business actually controls, SPTs calibrated to an evidenced baseline, margin adjustment symmetry (step-downs earned, step-ups capped), verification scope and cost, and consequences architecture — missing an SPT should move pricing, not trigger default. Declassification risk is real: lenders increasingly reserve rights to strip the “sustainability-linked” label when data quality fails, with reputational consequences beyond the loan. For Turkish borrowers raising from international lenders, aligning loan KPIs with TSRS/CSRD reporting metrics avoids running two measurement systems — one for the regulator, one for the bank.