Australia Post will raise domestic parcel fuel surcharges from 12% to 19.5% in June, with StarTrack Express jumping from 22.7% to 30.2%. Contract parcel customers bear the cost. Retail and consumer customers are not affected.
Australia Post described the change as a "necessary" response to rising fuel costs. For the businesses paying the bill, "necessary" does not make it painless.
Australia Post will increase its domestic parcel fuel surcharge from 12% to 19.5% from June. StarTrack Express and StarTrack Premium surcharges will jump from 22.7% to 30.2%.
The increases apply to contract parcel customers only. MyPost Business, retail counter customers and letter services are not affected. But for the thousands of Australian ecommerce businesses shipping on contract rates, this is a direct hit to unit economics.
The numbers
A parcel that cost $10 to ship with the old 12% surcharge cost $11.20. Under the new 19.5% surcharge, that same parcel costs $11.95. For StarTrack Express, the jump is steeper: from $12.27 to $13.02 on a $10 base rate.
Scale that across hundreds or thousands of daily shipments and the margin compression is material.
New domestic parcel fuel surcharge rate for Australia Post contract customers, up from 12%
Australia Post stated it is "regularly reviewing and updating its fuel surcharge to help recover the recent significant increase in fuel costs." This is the second increase in 2026, following an earlier rise in March.
Why it matters
Shipping costs are already the most sensitive variable in Australian ecommerce profitability. Free shipping expectations from consumers, combined with rising logistics costs, create a squeeze that most businesses absorb rather than pass on.
For businesses running on thin margins, particularly in categories like fashion, homewares and beauty where average order values sit between $50 and $120, the additional $0.75 to $1.50 per parcel adds up to thousands per month.
The timing compounds the pressure. Australian retail is heading into what Inside Retail called a potential "crunch month" in May, with a federal budget and potential rate decision landing in the same period.