Stamp Price Increase 2024 Australia. This change would increase the price of delivering reserved ordinary. Under the proposed changes from january next year the cost of standard stamps will leap from $1.20 to $1.50.

From april 3, 2024, the cost of sending letters will increase as follows: Large letters weighing up to 125g, affixed with a stamp, will now be priced at $3, up from $2.40.