Submit a proposal

The Assessment Framework is changing in line with amendments to the Infrastructure Australia Act 2008. Find out more here

On 1 June 2023, we received an addendum to our Statement of Expectations to identify that Infrastructure Australia should only accept proposals from Australian, state or territory Governments.

Our Assessment Framework explains our basic requirements for submissions and how we assess infrastructure proposals. 

The Assessment Framework is designed for anyone who wishes to submit an infrastructure proposal to Infrastructure Australia. It guides you on the steps you should take to develop high-quality infrastructure proposals and meet our requirements for submissions.

Submissions to the Infrastructure Priority List

The Infrastructure Priority List is changing in line with amendments to the Infrastructure Australia Act 2008. Find out more here.

There are two reasons to submit an infrastructure proposal to us. 

The first is to have the proposal considered for the Infrastructure Priority List.

If this is the case, the table below explains our submission process.

Stage overview

During Stage 1, you will clearly identify the problems and opportunities you are seeking to solve and the opportunities you are seeking to realise.

  1. Download the Stage 1 volume of the Assessment Framework to understand what is required at this stage.
  2. Engage with us for advice if you have any questions while developing your Stage 1 submission using our Stage 1 submission template.
  3. Contact us at to organise a secure file transfer for your completed submission.


If we positively assess your submission by agreeing that you have provided sufficient evidence to demonstrate that the problem or opportunity is nationally significant, we will list your proposal on the Infrastructure Priority List as an ‘early-stage proposal’.

Go to Stage 1

Other submissions

The second reason to submit a business case to us is because $250 million or more in Australian Government funding has been committed to the proposal. We are required to evaluate business cases for infrastructure proposals with funding committed above this threshold.

If this is the case, get in contact with us to discuss your submission. You can contact us via email at or call us on (02) 8114 1900.

Detailed technical guidelines

To help you develop your proposal, we have produced a series of detailed technical guidelines alongside the Assessment Framework volumes. These provide additional detail on specific methodologies and approaches you can use when developing your submission to us.