Australia Post was given the go ahead for the price rise yesterday by the Australian Competition and Consumer Commission (ACCC).
Consumers with a concession card will still be able to buy stamps for 60 cents until 2017.
Australia Post blamed the price rise on the rapid decline in the number of people sending letters, telling a recent senate enquiry that its letter business had lost more than $400 million in the past three years.
It argued a 10 cent increase would reduce the size of that loss and help make the letter business more viable.
Australia Post has increased the basic postage rate three times in the past 22 years, most recently in 2010. During this time, the cost of posting a standard letter has gone from 45 cents to 60 cents.