The new Sky Muster Plus product will be available next year to users in the company's satellite network footprint.
Web traffic such as streaming video and online gaming will be counted as part of the monthly data allowance.
In 2017, NBN Co, which is rolling out Australia's national broadband network, doubled the wholesale monthly data allowances from 150GB to 300GB.
NBN Co's chief executive Stephen Rue said: "The launch of our Sky Muster Plus product is another demonstration of our unwavering commitment to regional and rural Australians living in some of the most far-flung regions of our vast outback.
“Our Sky Muster satellite service is an essential part of the NBN rollout that not only helps to provide homes and businesses with access to fast broadband services, but also the tools to help unlock social and economic prosperity in all our regions.
“We have been listening to feedback from consumers and industry on what we can do to improve customer experience on the NBN Co Sky Muster network.
"The new Sky Muster Plus product is designed to give regional and rural Australians peace of mind knowing that essential Internet services, like emailing loved ones or accessing internet banking, should not slow down if their monthly data limit has been exceeded.
“Our team is also continuing to consult with industry on a number of additional wholesale product updates on the Sky Muster satellite service, including a regional enterprise service as well as additional applications to enable remote telehealth and distance education."