Beyond Climate: TNFD, TIFD and the Coming Wave of Non-Financial Disclosure

Climate disclosure has dominated sustainable finance for the last decade. The TCFD recommendations (2017) set the four-pillar template — governance, strategy, risk management, metrics and targets — and the IFRS Sustainability Disclosure Standards (S1 and S2) turned those recommendations into audited reporting in 2023. For most insurers, climate is now the disclosure that gets the board time, the actuarial review, and the external assurance budget.

It is not the last one coming. Two adjacent disclosure regimes are moving through the same design lifecycle: nature (TNFD) and social-and-inequality (the combined TIFD/TSFD initiative). Both follow the TCFD architecture deliberately, and both will land on insurers’ desks within the next reporting cycles.

This post sets out the sequence, how the regimes interoperate, and what the actuarial function should be tracking now so that the second and third waves do not arrive as a surprise.

The Disclosure Timeline

flowchart LR
    A[TCFD<br/>2017] --> B[ISSB / IFRS S2<br/>2023]
    B --> C[TNFD v1.0<br/>2023-2024]
    C --> D[TISFD<br/>2025+]
    
    style A fill:#0A0F1E,stroke:#00C2CB,color:#F0F0F0
    style B fill:#0A0F1E,stroke:#00C2CB,color:#F0F0F0
    style C fill:#0A0F1E,stroke:#C9A84C,color:#F0F0F0
    style D fill:#0A0F1E,stroke:#C9A84C,color:#F0F0F0

TCFD gave the market a template. IFRS S2 codified it for financial reporting. TNFD adapted the same template to nature and biodiversity, publishing v0.4 in 2023 and the final v1.0 shortly after. The Taskforce on Inequality-related Financial Disclosures (TIFD) and the Taskforce on Social-related Financial Disclosures (TSFD) consolidated into a single initiative in 2023 with the explicit objective of interoperability with TNFD and TCFD.

The design decision that matters is that each successor regime keeps the same four pillars. For insurers, this means the governance processes, risk management structures, and metrics frameworks already stood up for climate are not disposable — they extend.

1. TNFD: Nature Beyond Carbon

The Taskforce on Nature-related Financial Disclosures addresses risks and opportunities tied to ecosystems, biodiversity, and natural capital. The framework organises disclosures into three metric tiers:

• Core global disclosure metrics — required of all reporters, covering land, freshwater, marine and atmosphere impacts and dependencies.
• Core sector disclosure metrics — tailored to sectors with heightened nature footprints (agriculture, mining, construction, insurance-sensitive lines).
• Additional metrics — optional, supporting specific risk categories.

For insurers, nature risk is not abstract. South African agricultural insurers underwriting crop yield in the Western Cape are exposed to soil degradation and water stress. Short-term insurers writing coastal homeowners’ covers in Mozambique, Mauritius or the KZN coastline face mangrove and coral reef loss as a direct driver of storm surge vulnerability. Life insurers holding infrastructure debt indirectly finance the biodiversity footprint of those assets.

Unlike climate, nature risk is fundamentally local. A global temperature metric generalises; a biodiversity metric does not. The implication for the actuarial function is that exposure data needs to become more granular — parcel-level land use, basin-level water, ecosystem-level biodiversity — and traditional postal-code aggregation is too coarse.

2. TISFD: Social and Inequality

The joint Taskforce on Inequality and Social-related Financial Disclosures (TISFD) brings social impact into financial reporting in a structured way. The scope, as the founding partners articulated it, provisionally covers social- and inequality-related risks and opportunities affecting financial stability and long-term enterprise value creation.

For insurance, two themes are material:

• Human capital in the value chain. Underwriting portfolios with labour-rights exposure, investment portfolios with supply-chain concentration, claims networks dependent on local service providers — all are points where social risk translates into operational risk.
• Inequality as a pricing signal. In African markets in particular, premium affordability is a function of income distribution. When inequality widens, the effective size of the insurable market shrinks. Policies that make sense at mean income make no sense at median income.

The TISFD framework is earlier in its lifecycle than TNFD. Final disclosures are not expected to bind until the second half of the decade. But the direction is settled, and the intellectual architecture is already set up to align with TCFD’s four pillars.

3. Interoperability Is the Point

The reason to track all three regimes together is that they are deliberately designed to share infrastructure. The disclosing entity is the same. The governance committee is the same. The risk register is the same. The scenario analysis muscle developed for climate transfers directly to nature scenarios (for example, the NGFS and the NGFS-Nature extension) and, in future, to inequality scenarios.

What that means practically is that building three parallel reporting stacks — one for climate, one for nature, one for inequality — is a known failure mode. The insurers that got TCFD to audit-ready condition learned the value of a single sustainability data spine: one metrics store, one governance review cycle, one risk-register linkage. TNFD and TISFD will work if they are additions to that spine, not parallel implementations.

4. Actuarial Implications

From an actuarial function perspective, four items belong on the 24-month roadmap:

1. Exposure data granularity. TNFD in particular needs location-level data that most insurers do not currently hold at the required resolution. Building that now, while the regime is voluntary, is cheaper than building it under audit pressure later.
2. Scenario library extension. Climate scenarios (NGFS, Orderly, Disorderly, Hot House) have analogues under TNFD and are emerging under TISFD. The scenario narratives, variable paths, and integration with the insurer’s own ORSA models need to be developed incrementally.
3. Materiality assessment discipline. ESRS has embedded double materiality (inside-out and outside-in). TNFD and TISFD follow the same principle. Annual materiality reviews should be scoped to cover all three regimes, not only climate.
4. Disclosure cross-referencing. The IFRS Sustainability Disclosure Standards explicitly allow cross-referencing between S2 and other sustainability frameworks. Well-structured TNFD and TISFD disclosures will reuse S2-disclosed governance and risk management language rather than restating it.

5. What South African Insurers Should Do

The South African Prudential Authority has been explicit that climate is the first of several sustainability risks it expects firms to manage. The PA’s own guidance notes reference TCFD and IFRS S2 directly, and it is a reasonable planning assumption that nature and social disclosure regimes will be cited as they mature internationally.

For small and mid-sized insurers in particular, the practical path is to stand up the climate infrastructure first — governance, metrics, scenario analysis, materiality assessment — and design it from day one to be extensible. A second-best climate stack that cannot extend is a liability the next time a sustainability regime arrives.

Non-financial disclosure is heading in a clear direction. The question is not whether nature and social disclosures will bind; it is whether the insurer’s reporting architecture is built to absorb them without a rebuild.