How long does delivery take to each postcode in Australia?
Delivery time to a postcode is the carrier's published transit time for its zone, counted in business days from the dispatch day. Because your dispatch cutoff decides that day, the same postcode can be next day on one service tier and several business days slower on another.
Two things set the delivery time to a postcode: the zone the carrier puts the postcode in, and the service tier the parcel travels on. Each zone carries the transit time the carrier publishes for it, and a zone published as a range is read at its slower end. The origin matters too, because a postcode near your warehouse sits in a faster zone than the same postcode from the other side of the country.
What sets the delivery time to a postcode?
The carrier decides the zone, so two postcodes a suburb apart can publish different days. A store that ships from one warehouse and sells to the whole country is really publishing a table of times, not one number, and the promise on the page has to hold for the slowest zone it names.
How do you read a transit table?
A transit table has a row per zone and service tier, holding the business days the carrier publishes. Cutoff Promise Checker reads a table in the form zone, service tier, business days, one row per line, and maps each target postcode to the row that serves it. A row the carrier publishes as a range, or with an added remote surcharge in days, is treated at the slower end.
Why is the same postcode faster on one tier?
Because the tiers are sold at different speeds. An Express Post row may publish one business day where the Parcel Post row for the same zone publishes three to six. The map names the tier a verdict came from, so a next day answer is only ever attached to the tier that supports it, not to the store as a whole.
Build my promise map Can I promise next day delivery? Does next day include weekends?
Frequently asked questions
Does the delivery time include the day the order is placed?
No. The business day count starts from the day the carrier takes the parcel, which is set by your dispatch cutoff, not from the day the customer orders.
How is a remote postcode treated?
A remote zone is read at the slower end of the range the carrier publishes, so a remote postcode never receives an optimistic next day verdict.
Where do the transit times come from?
From the carriers' and aggregators' published speed and coverage pages, held as a dated table at build time. The table is refreshed by a deliberate step, so a carrier change is not a silent drift.