As of July 17, 2025, the cost to post a regular small letter in Australia is $1.70. Larger letters up to 125 grams cost $3.40, and those over 125 grams up to 250 grams cost $5.10. These prices reflect a recent increase from the previous rates, which were $1.50 for small letters and $3.00 for large letters up to 125 grams.
Key postage rates as of mid-2025:
- Small letter (standard size up to 250g): $1.70
- Large letter up to 125g: $3.40
- Large letter over 125g up to 250g: $5.10
These prices cover ordinary letter deliveries within Australia. For other letter sizes and services like priority or express options, costs will be higher.
