1. Purpose

The purpose of this Member Update is:

(a) To advise GTA Members the GTA Board has approved for release the 2026-27 GTA Location Differential (LDs) for Western Australia (WA), as recommended by the GTA Commerce Committee. These are now available on the GTA website and will take effect from 1 October 2026.

(b) To advise Members of an update to two Victorian LDs mapped to Outer Harbour in South Australia.

2. Background to WA LDs

GTA publishes the LDs for the storage locations of our members in QLD, NSW, VIC, SA and WA annually to enable participants using the GTA Contract No. 2 Grain and Oilseeds in Bulk – Basis Track to price grain at up-country sites. Each year, GTA consults with members and the wider grain industry to address potential changes.

With endorsement from the Commerce Committee, the GTA Board approved WA LDs on 27 October 2026.

GTA LDs for QLD, NSW and VIC have been published for the 2026-27 season via GTA Member Update No. 17 of 2026 on 28 August 2026. GTA LDs for SA have been published for the 2026-27 season via GTA Member Update No. 26 of 2026 on 21 October 2026.

The delay in the release of the WA (and the SA LDs) is a result of industry agreeing to use Bunge and CBH Group published freight rates for South Australia (SA) and Western Australia (WA) each year, subject to approval by the GTA Commerce Committee and the GTA Board. The GTA LDs cannot be processed until the published freight rates are released.

For non-CBH sites and Bunge sites the agreed methodology is “In WA where a site is not owned by CBH (or Bunge), the LD shall be calculated using the road distance to port of the particular site based on Google Maps based on the rate/t per km rate for the nearest CBH (or Bunge) site adjusted for distance.” In WA the site where the LD is a GTA calculated value is Tamma Grain.

3. Effective Date

The GTA 2026-27 Location Differentials are effective from 1 October 2026.

4. API or Excel Format

The GTA 2026-27 Location Differentials are available for GTA Members through Application Programming Interface (API) or in Excel format. Please request access via either methodology by emailing admin@graintrade.org.au

5. Modification to Victorian LDs

GTA has received the Bunge freight table that are utilised to create the SA LDs. The freight table included freight rates for two Bunge sites located in Victoria (VIC) that are mapped to Bunge’s Outer Harbour Terminal.

The Victorian LDs have now been adjusted to reflect these rates. Sites and rates are:

• Dooen $45.00
• Werrimull $57.26

The revised VIC LDs are available on the GTA website.

6. Further Information

For further information about the GTA Location Differentials, please refer to GTA Fact Sheet – Understanding Location Differentials