Who Pays for Scope 3? Why the Answer Changes Everything

There is a question sitting at the heart of every corporate sustainability programme that nobody wants to ask out loud: who actually pays for it?

Scope 1 and Scope 2 emissions — the carbon a company produces directly and the emissions from the energy it buys — are, broadly speaking, the corporate's own problem to solve. The costs land on the organisation's balance sheet and the benefits flow back to it.

The economics are uncomfortable but at least they are legible.

Scope 3 is a different and far more awkward creature. For most large companies, supply chain emissions account for 70% or more of their total carbon footprint, which means the genuinely important decarbonisation work happens not inside the corporate but across hundreds or thousands of suppliers — many of them small and medium-sized businesses with thin margins, limited in-house expertise, and no particular reason to absorb the cost of someone else's sustainability agenda.

The question of who pays for Scope 3 delivery is not a funding detail. It is a strategic decision that determines whether a programme succeeds at scale or quietly stalls.

The Default Position — and Why It Doesn't Work

The default approach most corporates have taken is the simplest one to implement: tell suppliers what you need and expect them to fund it themselves. Send out a questionnaire. Mandate a carbon reporting platform. Set a timeline. Place the cost — whether that's the platform subscription, the consultant's fee, or the time taken to measure and disclose emissions data — squarely on the supplier.

The corporate bears no direct financial exposure. Procurement teams can point to activity. Someone in sustainability leadership can report engagement numbers upward.

In practice, this model has a poor track record. Adoption rates are low.

The suppliers who do engage tend to be the larger, better-resourced tier-one businesses that would have moved in this direction eventually anyway.

The long tail — the SME subcontractors, the local service providers, the family-owned manufacturers that make up the operational fabric of most supply chains — tends to disengage, file the questionnaire away, or submit whatever data causes the least disruption. The financial barrier is real and immediate; the consequence of non-compliance is usually distant and vague. When cost lands on those least able to bear it, and the benefit flows to those asking the questions, the resulting resentment is entirely rational.

The data quality that emerges from this model tends to be poor. Suppliers who self-fund their own compliance are incentivised to report numbers that satisfy a box, not numbers that reflect reality. There is no shared interest in rigour.

The corporate ends up with a dataset that looks comprehensive on a dashboard and means very little in practice — which is precisely the kind of thing that attracts scrutiny as regulators become more sophisticated about what constitutes genuine disclosure versus performative compliance.

There is also a subtler problem. A supplier-funded model sends an implicit message about how seriously the corporate views the programme. When the ask arrives unfunded, with a deadline attached, it reads less like a strategic partnership and more like an administrative burden being passed down the chain. Experienced procurement professionals on the supplier side — and there are many — recognise this immediately. It does not inspire the kind of engaged, high-quality participation that produces useful emissions data and genuine supply chain transformation.

A Better Model — The Centrally-Funded Managed Service

The alternative is for the corporate to take ownership of the programme, not merely the mandate. Rather than issuing requirements and leaving suppliers to work out the economics, the corporate funds a central delivery function — a team, a platform, a managed service — that identifies which suppliers to prioritise, sets the measurement standard, delivers the onboarding support, and provides the tooling suppliers need to participate. The cost sits with the organisation that benefits most from the data and that has the deepest interest in the outcome.

This is not a philanthropic gesture. It is a straightforward recognition of where the decision-making power sits and where the programme accountability should therefore also sit.

The corporate wants clean, auditable Scope 3 data. The corporate is best placed to specify what that means. The corporate should fund the infrastructure required to produce it.

The practical benefits are significant. Adoption rates improve substantially when the cost barrier is removed. Suppliers who previously declined to engage — not because they lacked commitment to sustainability but because they lacked a budget line for it — can now participate without an internal funding decision.

The quality of data improves because the measurement methodology is standardised centrally rather than being left to each supplier to interpret. Programme credibility improves because the corporate has made a visible financial commitment, which signals that this is a permanent feature of how the business operates rather than a compliance exercise that will fade when the regulatory pressure eases.

The Deutsche Bank Approach: Control Without Prescription

The most instructive model currently operating at scale is the approach Deutsche Bank has developed for sustainable supply chain finance.

The bank — recognising that 97% of its carbon footprint arises from its supply chain, with purchased goods and services the largest single contributor — did not simply mandate that suppliers report their emissions and absorb the associated costs. Instead, it built a programme architecture in which the corporate sets the standard and then makes a considered decision about how far it wants to go in supporting delivery.

The first step towards setting up a supply chain finance programme that embeds sustainability metrics is taken by the corporate's procurement department. Sustainability-linked KPIs manifest themselves in the contractual arrangements with suppliers.

An external agency is typically mandated to rate all the suppliers from an ESG standpoint, with ratings taking into account all three ESG dimensions. The corporate, in other words, owns the framework. It does not delegate the standard-setting to suppliers and then complain about inconsistency.

What makes the Deutsche Bank model particularly instructive is what happens next. Rather than requiring all suppliers to fund their own compliance, the corporate can operate across a spectrum. At one end, well-resourced suppliers with the capacity to self-fund are expected to do so. In the middle, a part-funded arrangement shares the cost — the corporate absorbs onboarding, tooling, or training costs while suppliers retain skin in the game through their own time and operational investment.

At the far end, where the strategic importance of a supplier is high or where the cost barrier would otherwise prevent participation entirely, the corporate can offer full financial support — including, in Deutsche Bank's case, access to preferential financing terms for suppliers who improve their ESG ratings.

Suppliers benefit from invoices being paid early by the bank, which means the corporate can transact with favourable payment terms. As the related financing costs for the suppliers are based on the strong creditworthiness of the corporate, suppliers usually receive cheaper financing than they would be able to secure on their own credit profile. The sustainability incentive is embedded into the financial relationship, not bolted on as an external demand. Improvement is rewarded materially, not just acknowledged.

This same architecture has been applied across Deutsche Bank's client base. In the programme developed for Epta, suppliers can receive payment immediately after an invoice is approved, with financing costs based on Epta's creditworthiness. Suppliers can further reduce financing costs if they improve their ESG rating — the more sustainable a supplier operates, the greater the pricing benefit. The incentive structure is explicit, commercially meaningful, and entirely within the corporate's control to calibrate.

The Case for Corporate Control

What the Deutsche Bank model demonstrates is that the question is not simply who pays, but who decides — and those two things should be held by the same party.

A corporate that sets a Scope 3 standard but leaves suppliers to fund compliance has separated accountability from resource. It has created a mandate without a mechanism. The programme will produce activity but not necessarily outcomes.

A corporate that funds a central delivery capability — even partially — retains control over quality, pace, methodology, and scope. It can prioritise the thirty suppliers that matter most to its emissions profile rather than sending a blanket requirement to three hundred. It can adjust its level of support based on supplier size, strategic importance, and existing capability. It can use financial incentives rather than contractual threats as the primary lever for improvement, which tends to produce more durable behaviour change and healthier long-term relationships.

There is also a governance argument. As reporting requirements under frameworks such as CSRD and the SEC's climate disclosure rules become more prescriptive, the quality of Scope 3 data will face increasing external scrutiny. A programme where the corporate has taken ownership of the measurement methodology — rather than aggregating self-reported supplier estimates of varying quality — will be far more defensible in an audit. The investment in delivery infrastructure is also an investment in the credibility of the disclosure.

Designing the Right Programme for Your Supply Base.

None of this means every corporate should fund every supplier's sustainability journey in full. The Deutsche Bank spectrum model is precisely right because it acknowledges that one size does not fit the complexity of a real supply chain. A sensible programme design would segment the supplier base by emissions materiality and capability, then apply a differentiated funding approach accordingly.

Strategic, high-emission suppliers where data quality is non-negotiable and where the relationship is a long-term partnership are the strongest candidates for fully funded or finance-backed support.

Mid-tier suppliers where engagement is important but capacity is limited benefit from a part-funded model that shares the investment and therefore the commitment. Well-resourced tier-one suppliers with their own sustainability programmes and internal capabilities can reasonably be expected to self-fund against a clear corporate standard.

The corporate that designs a programme this way is not spending more than it needs to. It is spending where it matters, on the suppliers whose data and whose transformation will actually move the needle on Scope 3 emissions. It is also signalling, clearly and commercially, that sustainability is a feature of how this organisation procures — not an aspiration printed in an annual report.

That signal matters more than many procurement leaders currently appreciate. The suppliers who engage most productively with corporate sustainability programmes are not the ones being threatened with deselection. They are the ones who have been shown that their customer has made a real commitment, backed by real resource, and that participation in the programme creates genuine commercial value. That is what it means to make Scope 3 commercially serious.

And it starts with the corporate deciding to own the answer to a question it has too long been happy to leave unanswered.