The green finance market is growing fast. Multilateral Development Banks and
supranational institutions have established wholesale green credit lines channelled
through local commercial banks to SME customers, with deployment expected to reach
billions of dollars by 2027. The ambition is real. The capital exists. But there is a
structural problem sitting right in the middle of the pipeline — and it has nothing to do
with appetite.
The problem is data.
Banks today are under mounting pressure from regulators, investors and internal risk
committees to understand the climate and transition risk embedded in their SME
portfolios. The PRA’s climate-related financial disclosure rules, the weight of CSRD
cascading down through supply chains, and the growing scrutiny of financed emissions
are converging on the same demand: show your working. Quantify your exposure.
Demonstrate that the green finance you’re deploying is actually doing what it says on
the tin.
The trouble is that SMEs — which make up the vast majority of most commercial bank
portfolios — simply don’t produce structured sustainability data. Unlike large listed
firms with dedicated ESG teams and annual reporting cycles, the average SME has no
emissions profile, no transition plan, and no standardised way of describing either.
What banks typically collect comes through onboarding forms or periodic surveys —
inconsistent, quickly outdated, and certainly not fit for portfolio-level disclosure.
This is what TDH calls the verification tax: the hidden cost — in time, resource and
credibility — that banks pay every time they try to assess climate risk in the absence of
reliable SME data. It is the reason green credit lines stall at the deployment stage. It is
the reason sustainability teams are forced to work with fragmented, manually
assembled datasets that can’t be trusted for decision-making or external disclosure.
And it is the reason climate finance, for all its good intentions, risks becoming a paper
exercise.
The solution isn’t more surveys. It’s a consistent digital framework that makes SME
transition data scalable, verifiable and comparable — by design.
The Climate Action Platform, developed and deployed by NatWest and National
Australia Bank, does exactly that. Powered by FourTwoThree, it provides bank-grade
digital infrastructure that enables scalable SME engagement, automated technical
verification and standardised impact reporting. Rather than asking SMEs to self-report
from scratch, the platform pre-populates company profiles from existing data, allows
businesses to validate quickly, and delivers the verified emissions and sustainability
data that banks need for financed emissions and regulatory reporting — while also
giving the SME itself something valuable in return.
The result is a framework where green finance can actually flow. Banks can evidence
eligibility, demonstrate portfolio impact and meet disclosure obligations. SMEs get a
sustainability profile and access to improvement resources. And the capital that was
always there finally has a credible data infrastructure to move through.
Climate finance won’t stall because of a lack of ambition. It will stall — or already is
stalling — because the data layer underneath it isn’t good enough. Standardisation isn’t
a compliance box to tick. It’s the infrastructure that makes the whole system work.
