How to Budget for Corporate Sustainability: A Five-Layer Investment Framework, from ESG Activities to Business Transformation

“We want to start on sustainability next year. How much should we budget?”

It is one of the questions DOMI Earth hears most often when we work with companies on sustainability.

Some companies set aside NT$300,000 or NT$500,000 for their first sustainability budget and spend it on a tree planting, a beach cleanup or an employee event. Others, facing customer requirements, budget for a carbon inventory, certifications, sustainability disclosure or consultants. Larger companies may already have a standing annual ESG budget.

But we usually start by asking something else: what do you want this money to change in your company?

The real question is rarely “How much does sustainability cost?” It is “Where should this sustainability investment take the company?”

What is a sustainability budget? More than a line item in the ESG department

Let us start with a fuller definition:

A corporate sustainability budget is the resources a company commits to reducing sustainability risk, building organizational capability, improving operations, creating business value and expanding its positive impact on society and the environment.

That means a sustainability budget is not just the carbon inventory, the sustainability report, a tree planting, a beach cleanup, a volunteer day or a CSR event. It also sits inside HR's talent development budget, operations' equipment upgrades, procurement's supply chain management, R&D's new materials and products, and sales' new market development.

This is one of the biggest shifts as a company's sustainability practice matures: sustainability stops being a cost line owned by the ESG department and enters the way the whole company allocates resources.

Why do so many sustainability budgets go wrong from the start?

We have written before about a narrower question: if a company is planning a sustainability event, how should it budget?

Take a tree planting. If it is meant to deliver real environmental benefit, the budget cannot stop at transport, meals, venue and saplings on the day. It also has to cover aftercare, replanting and monitoring, and make sure the employees who take part actually understand what the effort means.

So the question for an event budget is not “How much does this event cost?” but “What will this spending leave behind?”

But once we talk about a company’s sustainability budget for a whole year, we have to step up a level.

A sustainability event budget is not a corporate sustainability budget.

Real sustainability transformation can touch finance, operations, HR, procurement, the supply chain, R&D, brand and sales all at once. If a company’s sustainability budget boils down to one question, “How much does the ESG department have left to run events this year?”, then sustainability has not yet become part of how the business is run.

Before you budget, ask: why are we doing sustainability?

When DOMI supports companies through sustainability transformation, we put great weight on corporate purpose. Purpose is not a polished brand slogan. It answers questions like these:

• Why do we exist?
• Who are we creating value for?
• Which people, communities and parts of the environment does our industry affect?
• Are there people who have not benefited from our industry’s growth, or who have even borne the cost?
• Can we use our core capabilities to make that better?

Further reading: How corporate purpose becomes the starting point of sustainability transformation

Once those questions are clearer, the sustainability budget finally has a direction.

Take the same NT$1 million. One company might spread it across ten unrelated events. Another might pick a single issue closely tied to its core business: build alignment among employees and managers in year one, improve operations in year two, and in year three start changing its products, supply chain or the way customers take part.

Both companies spend the same amount. Three years later, the capability, competitiveness and impact they are left with are likely to look very different.

A sustainability budget does not start with “How much money do we have this year?” It starts with “What change do we want to create?”

DOMI’s five-layer framework for sustainability investment

To make it easier for companies to review how they allocate sustainability resources, we organize the budget into five layers: compliance → capability → operations → business → impact.

The five layers are not five separate budget lines. They work more like a map. With it, a company can see where its money mostly goes now, and where the next round of money should take it.

Layer 1 | Compliance: earning your seat at the table

Layer 1 is the sustainability spending most Taiwanese companies know best. For example:

• Carbon inventory
• Product carbon footprint
• Sustainability disclosure
• ISO and related certifications
• Verification and assurance fees
• ESG data collection and management
• Supply chain questionnaires from customers
• Responding to regulations and standards

These matter a great deal. For exporters, for companies in large corporate supply chains and for companies facing customer ESG requirements, some of this is no longer a question of whether to act. It is the basic condition for staying in the market.

But DOMI has one important caution for this layer:

Compliance is the floor of sustainability, not the ceiling.

Completing a carbon inventory does not mean a company has cut its emissions. Publishing a sustainability report does not mean the organization has changed.

The real value of compliance spending is that it tells a company where it stands today, which risks it faces and what needs to change next.

Layer 2 | Capability: sustainability should not be understood only by the sustainability team

Many companies finish the inventory, the report and the consulting project and quickly hit the next question: now what?

The ESG lead knows sustainability matters, but operations sees it as an ESG matter. Sales does not know how to talk about it with customers. Managers do not know how to lead their teams. Employees may not even know why the company suddenly started doing all this.

What the company is missing at this point is usually not another report. It is the organizational capability to drive change.

So Layer 2 may include:

• Building leadership alignment on sustainability
• Employee education
• Developing sustainability talent
• Cross-department workshops
• Sustainability strategy meetings
• Internal communication
• Coaching and advisory support
• Hands-on sustainability experiences for employees

This is also why tree planting, Indigenous community experiences, sustainability days for employees and volunteer days are not goals in themselves. The question to ask is: what change is this activity meant to create in people?

If it turns an abstract idea like ESG into something employees can experience firsthand, and gets people to feel “this actually has something to do with me,” then the activity is more than an event. It becomes a doorway to organizational capability and cultural change.

Layer 3 | Operations: has the way the company works really changed?

Once people understand, the next question is whether the company’s day-to-day practices have changed as a result.

For manufacturers, that might mean energy-saving equipment, process improvements, waste reduction, circular materials, energy management and water efficiency. For office-based companies, it might mean energy, procurement, transport, catering and single-use item policies. For procurement teams, it might mean supplier selection, low-carbon materials, local sourcing and supply chain management.

At this layer, sustainability moves from being the concern of the ESG department or a few individuals to being part of how the company does business every day.

Real business value also starts to appear here: lower electricity bills, less raw material waste, lower waste-handling costs, lower supply chain risk and better operating efficiency.

Now the company can start to ask: how much value has this sustainability investment created or protected?

Layer 4 | Business: can sustainability start creating value for the company?

This is the layer DOMI most wants companies to move toward. If sustainability is only ever compliance, reporting, events, donations and emissions cuts, owners easily come away with one impression: the company makes money first, then spends some of it on sustainability.

Is there another possibility? Sustainability itself can make for better business.

• Can low-carbon products win new customers?
• Can circular design cut costs and also open up new services?
• Can the company help customers solve their own ESG problems and so raise the value of its products and services?
• Can problems once treated as social or environmental costs be turned into opportunities for innovation?

Once spending reaches this layer, the sustainability budget no longer necessarily sits under the ESG department. It starts to appear in R&D, product, innovation, sales and market development budgets.

This is an important watershed: sustainability shifts from cost to value creation.

Layer 5 | Impact: as the company grows, can the world get better with it?

The question at Layer 5 goes beyond “How much have we reduced our negative impact?” It is this: because this company exists, are some people, communities or ecosystems genuinely better off?

That could include people in energy poverty, local communities, disadvantaged and marginalized stakeholders, ecological restoration, education, employment, or the people long affected by the company’s industry.

But there is an important difference here: impact is not philanthropy.

If an impact program can only survive because the company “writes a check” every year, it is likely to be the first thing cut when business turns down. A more mature model forms a loop: company growth → more impact → stronger company value → still more impact.

When the company does well, society and the environment gain more as well, and sustainability becomes a business cycle that can sustain itself.

How much should a sustainability budget be? Why we don’t recommend simply picking a percentage of revenue

By this point, many business owners still ask: “So how much, exactly? 1% of revenue? 2%? Is there a standard?”

We do not recommend answering with a fixed percentage at the outset. A company running its first carbon inventory and a company already developing low-carbon products and a sustainable business model need completely different resources.

More important than a percentage is answering two questions: which layer are we mainly in now, and which layer should this year’s resources take us to?

• A company that is just starting to face regulations and customer requirements may need to focus on compliance and capability first.
• A company with basic systems and alignment in place may add operations next.
• A company whose operational improvements are well established can begin investing in business.
• Finally, business value and social and environmental impact can be tied together.

So the five layers are not 20% each. What matters is this:

The five layers do not need to be funded equally. What matters is knowing where the company is today and where the next round of resources should take it.

Six steps to start your annual sustainability budget

If you are preparing next year’s budget, resist opening Excel at first. Sit down with the core team and answer six questions in order.

Step 1 | Purpose: why are we doing sustainability?

Do not answer “because of ESG,” “because of customers” or “because of regulation.” Ask one more question: what kind of company do we want to be?

Step 2 | Key issues: which problems are most worth our effort?

Do not pick ten at once. For small and mid-sized companies especially, the fewer the resources, the more focus matters. Identify one or two issues that are closely tied to your core business, customers, employees, supply chain and the company’s future.

Step 3 | Intended change: what do we want to look different a year from now?

Do not rush to decide which event to run. First ask: looking back a year from now, what change do we hope to see? Employees who understand more? Lower energy use? More customers? Changed products? Suppliers who have joined? Or a social or environmental problem that has genuinely improved?

Step 4 | Action design: which approach is most likely to create that change?

Only once you know the change you want do you choose the actions. This is when you decide: Do we run a carbon inventory? Do we hold an employee sustainability experience? Do we replace equipment? Do we change procurement? Do we develop a new product? Do we invest in a community?

The order matters. You do not spot an activity first and then look for an ESG reason to justify it. You first decide the change you want, then design the action best suited to create it.

Step 5 | Budget allocation: which layer is the money going to?

Now, finally, open Excel. Map this year’s planned spending onto the five layers of compliance, capability, operations, business and impact, and look at it:

• Is 90% of it going to compliance?
• Are there plenty of events but no change in operations?
• Is there a lot of equipment upgrading while employees have no idea why the company is doing it?
• Is there plenty of impact work that has never connected to the business model?

This picture will start to show the management team where the real problem is.

Step 6 | Impact and business return: how do we know the money was well spent?

Do not look only at what was done: 500 trees planted, 300 employees taking part, a carbon inventory completed, five workshops held. These are important records of output, but they are not enough.

Keep asking: what changed? Did employee behavior change? Did energy use go down? Did products change? Did suppliers join? Did customer relationships improve?

Then ask: what business return did it produce? How much cost did it cut? Which risks did it reduce? What revenue opportunities did it add? Did it improve our ability to attract and retain talent? Which new customers or supply chain opportunities did it open up? What new competitive advantage did it build?

The day sustainability budgeting matures, the sustainability budget slowly disappears

That may sound contradictory. But the more mature a company’s sustainability practice becomes, the less a standalone “ESG budget” may matter. Because:

• Saving energy is an operations investment to begin with.
• Building employees’ sustainability skills is talent development to begin with.
• Sustainable products are R&D to begin with.
• Supply chain improvement is procurement and risk management to begin with.
• A new sustainable business model is a growth strategy to begin with.

At that stage, the company stops asking “How much budget does the ESG department have left this year?” and starts asking: “How much of the company’s overall resource allocation this year is making us more resilient, more competitive, and better for people and the environment?”

That is what it means to move from sustainability spending to genuine investment in corporate sustainability transformation.

Conclusion | A good sustainability budget measures how much a company is willing to invest in changing itself

If our previous article answered “How do we budget for a sustainability event?”, this one aims to take companies up a level: how should the whole company invest in sustainability?

DOMI’s five-layer framework for sustainability investment (compliance → capability → operations → business → impact) is not about splitting the budget into five equal parts. It helps the management team see where we are now, why we should move to the next step, and where the next round of resources should go.

A truly good sustainability budget is not about how much money the company is willing to spend on doing good this year. It is about how many resources the company is willing to invest in changing itself.

When that investment starts to change the company’s employees, operations, products, customers, supply chain and business model, sustainability is no longer just a line item for the ESG department. It becomes the company’s transformation budget for its next stage.

Which layer is your company’s sustainability budget going to right now?

If your company sets a sustainability budget every year and finds that:

• You have done a lot on compliance but do not know what comes next;
• You run events every year but struggle to say what they leave behind;
• You want to drive operational improvements but lack cross-department alignment;
• You have already invested substantial sustainability resources without yet creating business value;
• Your management team wants to rethink how to allocate sustainability resources next year.

then the move now may not be to add yet another ESG project, but to see clearly where you are today and where the next round of resources is best invested.