Postage Stamps 2024 Rates Calculator. Stamps.com customers enjoy additional discounts over most commercial rates , which will automatically appear in your account. With stamps.com all you need to do is weigh your mail piece and choose your mail class, destination, and special services and stamps.com will automatically calculate the required postage.
Mailing service prices increased by an average of 7.8%. Use our online calculator to estimate the postage price and delivery time to send your letter within australia.