The short version

An ESG consultant helps a business measure, report, and improve its environmental, social, and governance performance, meeting the reporting obligations that now apply and the expectations of investors, customers, and regulators. Hiring one on a contract or project basis gives you specialist ESG expertise to build a reporting framework, prepare for mandatory disclosure, or set a strategy, without committing to a permanent hire.

• Typical engagement: a few weeks for an assessment, or 3 to 9 months for reporting or strategy
• Day rates in Australia: A$1,200 to A$2,000/day depending on seniority and scope
• Common focus areas: ESG strategy, climate reporting, emissions, governance, disclosure, ratings
• Hire one when: mandatory reporting is landing, investors are asking, or you need an ESG strategy
• Time to deploy: Curated shortlists in 48 hours via Expert360
• Engagement types: Project-based, contract, advisory, or fractional

What is an ESG consultant?

An ESG consultant is a specialist who helps an organisation understand, measure, report, and improve its performance across environmental, social, and governance factors. That spans climate and emissions, environmental impact, how the business treats its people and communities, and how it is governed, and increasingly it means meeting formal reporting standards rather than producing a glossy sustainability brochure.

In Australia, ESG has moved from optional to obligatory for many businesses. Mandatory climate-related financial disclosure is being phased in from 2025, with larger entities reporting first and smaller ones following over subsequent years, and supply-chain pressure means many businesses below the threshold are being asked for ESG data by their larger customers. Businesses bring in ESG consultants on a contract or project basis to get ready for this reporting, to respond to investor and customer demands, or to set a credible ESG strategy. Many experienced practitioners work independently, which gives businesses access to that expertise for a defined piece of work rather than a permanent hire.

The title sits among several related roles:

• ESG consultant: works across environmental, social, and governance performance and reporting
• Sustainability consultant: focuses more on the environmental and sustainability side specifically
• Climate or carbon specialist: goes deep on emissions measurement and climate reporting
• GRC consultant: covers governance, risk, and compliance broadly, of which ESG governance is part

When you describe what's driving the need, Expert360 helps you work out whether you need a broad ESG consultant, a climate specialist, or a governance, risk and compliance consultant.

When should you hire an ESG consultant?

Most businesses bring in an ESG consultant for a specific trigger rather than as a permanent addition. The clearest signals:

• Mandatory reporting is landing. Climate-related financial disclosure or other ESG reporting obligations are coming into effect for your business, and you need the frameworks, data, and process to comply.
• Investors or lenders are asking. Your investors, lenders, or board want credible ESG data and strategy, and the current ad hoc approach won't satisfy them.
• Customers want ESG data. Larger customers are requiring ESG or emissions data as a condition of doing business, and you need to be able to provide it credibly.
• You need an ESG strategy. The business wants to move from reactive box-ticking to a genuine ESG strategy that holds up to scrutiny and supports the business.
• You're measuring emissions. You need to measure your carbon footprint, including the harder scope 3 supply-chain emissions, and set credible reduction targets.
• A rating or tender requires it. An ESG rating, a tender, or a transaction requires ESG disclosure and performance, and you need it in shape.

If two or more of these sound familiar, an ESG consultant is likely the right next step. Talking it through with Expert360 usually clarifies whether you need reporting, strategy, or emissions work.

How much does an ESG consultant cost in Australia?

Rates vary based on seniority, the depth of the work, whether it involves technical emissions measurement or assurance-grade reporting, and whether it's an assessment, a reporting build, or a strategy.

The below rates are indicative only. Experts in our network set their own rates, and you'll be able to compare real rates after requesting a talent shortlist.

ESG consultant: A$1,200–A$1,500/day

Typically 6 to 12 years in ESG, sustainability, or related roles, strong on reporting, data, and frameworks. Suits a reporting build, an assessment, or a defined ESG project.

Senior ESG consultant: A$1,500–A$1,800/day

12 to 18 years across reporting, strategy, and stakeholder engagement, comfortable with mandatory disclosure and board-level work. Suits mandatory climate reporting, ESG strategy, or investor-facing work.

Principal or ESG lead: A$1,800–A$2,000+/day

18+ years, often a former head of sustainability or ESG, leading the most complex programs. Suits enterprise-wide ESG strategy, assurance-grade climate disclosure, or high-stakes investor and regulatory engagement.

An assessment or readiness review is often scoped over a few weeks, while a reporting build or strategy typically runs three to nine months. For ongoing oversight, some ESG consultants work fractionally a day or two a week, which suits businesses that need the capability but not a full-time hire.

What drives the variance:

• Technical depth: emissions measurement, especially scope 3, and assurance-grade reporting command more
• Mandatory disclosure: formal climate-related financial disclosure carries a premium over voluntary reporting
• Strategy vs reporting: board-level strategy is priced above data and reporting work
• Sector: high-emitting or heavily scrutinised sectors have particular demands

Compared with a consulting firm, an independent ESG consultant usually costs a fraction of the fee for comparable senior delivery. Our guide to consultant rates in Australia covers what drives consulting cost in more depth.

ESG consultant vs sustainability consultant vs GRC consultant: what's the difference?

People searching for an ESG consultant are usually weighing whether they need the broad ESG view, a sustainability focus, or governance and compliance expertise. Here's how the roles separate.

An ESG consultant works across environmental, social, and governance performance and reporting, with a strong reporting and disclosure focus. Best for ESG reporting and strategy. Day rates run A$1,200–A$2,000/day.

A sustainability consultant focuses more on the environmental side: sustainability strategy, environmental impact, and initiatives. Best when the focus is environmental rather than disclosure. Day rates run A$1,100–A$1,800/day.

A climate or carbon specialist goes deep on emissions measurement and climate reporting specifically. Best when the need is a carbon footprint or climate disclosure. Day rates run A$1,200–A$1,900/day.

A GRC consultant covers governance, risk, and compliance broadly, of which ESG governance is one part. Best when the need is wider governance and compliance. Day rates run A$1,200–A$2,000/day.

The honest distinction is breadth and reporting focus versus environmental depth versus governance. The ESG label has become closely tied to formal reporting and disclosure, so if mandatory reporting or investor disclosure is driving the need, an ESG consultant is the right call. If it's specifically environmental initiatives, a sustainability consultant fits; if it's deep emissions work, a climate specialist. Many businesses use an ESG consultant to lead reporting and strategy, then specialists for technical depth.

When you describe your situation to Expert360, we help you figure out which of these you actually need before you commit.

What does an ESG consultant actually do?

The day-to-day varies by the engagement, but most ESG consultants cover some combination of the following.

• Materiality and assessment. They assess which ESG issues actually matter for the business and its stakeholders, and where the business stands against them and its obligations.
• Reporting and disclosure. They build the ESG and climate reporting the business needs, aligned to the relevant standards, including the mandatory climate-related financial disclosure being phased in.
• Emissions and data. They measure the carbon footprint across scopes, set up the data collection, and establish the baseline for reduction targets.
• Strategy and targets. They set the ESG strategy and credible targets, balancing ambition against what the business can actually deliver and defend.
• Governance. They put the governance, controls, and accountability in place so ESG is managed and reported with the rigour investors and regulators expect.
• Stakeholder engagement. They help engage investors, customers, and regulators on ESG, and respond credibly to ratings and information requests.

A typical engagement opens with a materiality assessment and a gap review against obligations, moves into building the reporting, data, and strategy, and closes with a credible ESG position the business can report, defend, and improve on.

How to choose the right ESG consultant

The real risk when hiring an ESG consultant is rarely enthusiasm for the topic. It's whether they combine genuine technical and reporting rigour with commercial realism, because the field has plenty of practitioners strong on principles but weak on the disclosure standards and data that now matter. Use these criteria to evaluate.

• Reporting and standards expertise. With mandatory disclosure now in play, confirm real expertise in the relevant reporting standards and assurance, not just general ESG awareness.
• Technical credibility. If emissions are involved, especially scope 3, confirm they can actually measure and defend the numbers, because weak data undermines everything built on it.
• Commercial realism. The best ESG consultants set targets and strategy the business can genuinely deliver, avoiding both greenwashing and unrealistic commitments that invite criticism.
• Sector fit. ESG issues and scrutiny differ sharply by sector. Match the consultant's experience to your industry and its material issues.
• Investor and regulator awareness. Look for someone who understands what investors, regulators, and ratings actually require, not just frameworks in the abstract.
• References that match your situation. A reference from a similar sector, size, and reporting obligation tells you far more than a general endorsement.

Expert360 vets ESG consultants on reporting and standards expertise, technical credibility, and commercial realism before they reach your shortlist, so the evaluation starts from a credible base.

Frequently asked questions

What does an ESG consultant do?

An ESG consultant helps an organisation measure, report, and improve its environmental, social, and governance performance. They run materiality assessments, build ESG and climate reporting aligned to the relevant standards, measure emissions, set strategy and targets, put governance in place, and help engage investors and regulators, so the business can meet its obligations and satisfy stakeholders credibly.

What is ESG?

ESG stands for environmental, social, and governance: the three areas against which a business's non-financial performance and impact are increasingly measured. Environmental covers things like emissions and resource use, social covers how the business treats people and communities, and governance covers how it is directed and controlled. Together they have become central to how investors, regulators, and customers assess a business.

How much does it cost to hire an ESG consultant in Australia?

Contract ESG consultants in Australia typically charge A$1,200 to A$2,000 per day depending on seniority and scope. An assessment runs a few weeks, while a reporting build or strategy runs three to nine months. This usually costs a fraction of a consulting firm's fee for comparable senior delivery.

Is ESG reporting mandatory in Australia?

Mandatory climate-related financial disclosure is being phased in for Australian entities, with the largest reporting first from 2025 and smaller entities following over subsequent years. Many businesses below the current thresholds are also being asked for ESG and emissions data by larger customers and lenders, so the practical reach extends well beyond those directly captured. An ESG consultant can confirm what applies to your business and when.

What's the difference between ESG and sustainability?

Sustainability tends to focus on environmental impact and a business's effect on the world. ESG is broader, covering environmental, social, and governance factors together, and is more closely tied to measurement, reporting, and disclosure for investors and regulators. In practice the terms overlap, but ESG signals a reporting and accountability focus, while sustainability leans toward environmental strategy and initiatives.

What are scope 1, 2, and 3 emissions?

Scope 1 emissions are direct emissions from sources a business owns or controls. Scope 2 are indirect emissions from the energy it buys. Scope 3 are all other indirect emissions across its value chain, such as suppliers, transport, and product use, and are usually the largest and hardest to measure. Climate reporting increasingly requires all three, which is why credible emissions expertise matters.

How quickly can I hire an ESG consultant through Expert360?

Expert360 typically delivers a curated shortlist of vetted ESG consultants within 48 hours of you describing the need. Because the consultants are independent, they can usually start within days, which suits reporting deadlines and investor or customer requests where timing affects the outcome.

How does an ESG consultant add value beyond compliance?

Beyond meeting reporting obligations, a good ESG consultant helps the business win and keep customers who require ESG credentials, access capital from investors and lenders who screen on ESG, manage the risks that poor environmental or social performance creates, and build a credible position that supports reputation and growth. The value is in turning a compliance burden into a commercial and risk-management advantage.