Expression of Interest (EOI)
Definition: A preliminary market approach where a government agency invites suppliers to indicate their interest and capability before deciding which suppliers to invite to a subsequent formal tender process.
What is an Expression of Interest (EOI)?
An Expression of Interest (EOI) is an early-stage procurement approach used by Australian government agencies to gauge market interest and shortlist capable suppliers before running a full Request for Tender or Request for Proposal. It is a key tool in Multi-Stage Procurement.
How Does an EOI Work?
- The agency publishes an EOI notice on a portal such as AusTender or a state equivalent
- Interested suppliers submit a response demonstrating their capability, experience, and capacity
- The agency evaluates responses and creates a shortlist
- Only shortlisted suppliers are invited to participate in the subsequent formal tender stage
EOI responses are typically shorter than full tender submissions. Agencies usually ask for:
- Company overview and relevant experience
- Key personnel and their qualifications
- Demonstrated capability for the type of work
- Financial capacity to deliver the project
When is an EOI Used?
EOIs are common for:
- Large infrastructure projects where the agency wants to narrow the field before investing in a detailed tender process
- Specialised services where the agency needs to confirm market capacity
- Panel Arrangements where the agency is establishing a pre-qualified supplier list
- Prequalification processes for ongoing procurement
Tips for Tenderers
- Invest effort — even though it is a preliminary step, a weak EOI means you will not be invited to tender.
- Highlight differentiators — with limited space, focus on what sets you apart from competitors.
- Provide strong referees — agencies often contact referees at the EOI stage.
- Watch for EOIs in your sector — they signal upcoming tender opportunities worth preparing for.
Related Terms
Capability Statement
A concise marketing document that summarises a business's experience, qualifications, resources, and capacity to deliver, used to introduce the business to government buyers and support tender submissions.
Multi-Stage Procurement
A procurement approach conducted in two or more sequential phases, typically starting with a broad market engagement like an EOI before narrowing down to a formal tender among shortlisted suppliers.
Prequalification
A process where suppliers are assessed and approved against defined standards before being eligible to tender for specific categories of government work.
Request for Information RFI
A non-binding market engagement where a government agency gathers information from suppliers about available solutions, capabilities, or pricing to help shape a future procurement strategy.
Request for Tender RFT
A formal invitation from a government agency for suppliers to submit a detailed bid to deliver specific goods, services, or works against clearly defined requirements and evaluation criteria.
Select Tender
A procurement method where the government agency selects and invites a limited number of suppliers to submit responses, rather than advertising the opportunity publicly.
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