MAS Guidelines on Environmental Risk Management for banks, insurers and asset managers

The core idea

Environmental risk reaches a financial institution through its customers and investments. A bank lending to a factory in a flood-prone area, or an insurer covering a coastal asset, or a fund holding shares in a company whose product is about to be regulated out of existence, all face a risk that behaves like credit risk, underwriting risk or market risk. MAS's position is that those risks should be managed with the same seriousness.

The guidelines are supervisory expectations rather than black-letter rules. In practice MAS supervises against them, so the distinction matters less than it sounds.

Three separate guidelines, three separate addresses

Citing one address for all three is a common error. They are three documents with three scopes.

The three pillars of expectation

1. Governance and strategy. Boards and senior management are expected to incorporate environmental considerations into strategy, business plans and product offerings, and to maintain effective oversight of environmental risk management. Placing this at board level is deliberate: it prevents environmental risk from being parked in a sustainability team with no authority over lending or underwriting decisions.

2. Risk management. Policies and processes to assess, monitor and manage environmental risk, embedded where decisions are actually made:

• for banks: across customer onboarding, credit evaluation and portfolio management
• for asset managers: across investment research and portfolio construction
• for insurers: across underwriting and investment

3. Disclosure. Disclosure of environmental risk information, with reference to international reporting frameworks.

How they were developed

The consultation papers were published on 25 June 2020 and the guidelines issued in December 2020. MAS co-created them with financial institutions and industry associations across banking, insurance and asset management, and tailored each set to that sector's business activities and risk practices.

The Green Finance Industry Taskforce (GFIT) published an accompanying Handbook on Implementing Environmental Risk Management for asset managers, banks and insurers in 2021. GFIT itself was convened by MAS from November 2019 to April 2023, and its four workstreams were taxonomy, disclosures, green finance solutions and environmental risk management.

Currency: the version you need is not the 2020 one

The guidelines' last revised date is 5 March 2026, when MAS added the Transition Planning addenda. Describing them as "the 2020 Guidelines" understates the current text. If you are working from a saved copy dated 2020, you are missing a substantial addition - see the separate transition planning entry on this site.

Where these sit in MAS's wider programme

The guidelines are one strand of the Finance for Net Zero (FiNZ) Action Plan, launched on 20 April 2023, which expanded MAS's 2019 Green Finance Action Plan to cover transition finance explicitly. FiNZ has four strategic outcomes:

1. Data, definitions and disclosures (including the Singapore-Asia Taxonomy)
2. A climate-resilient financial sector (these guidelines, and transition planning)
3. Credible transition plans
4. Green and transition solutions and markets (grant schemes, blended finance, carbon markets)

Almost everything MAS does on sustainability sits under one of those four headings, which makes FiNZ a useful map when you are trying to work out how a particular MAS initiative fits.

A practical note on accessing MAS material

MAS's website blocks automated access, so links here point to human-readable pages. Documents cannot reliably be retrieved by scripts.