Best NBN 100 plans: our top picks for fast 100Mbps internet

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The best NBN 100 plans are perhaps the most appealing in Australia. Not only should they allow four or more people to comfortably use the internet at the same time, whether they’re streaming in 4K or downloading large files, but they're also accessible by the vast majority of NBN connection types. 

While faster NBN 250 plans and NBN 1000 plans are also available, 100Mbps is perfect for families or small households with heavy internet usage.

NBN 100 plans started dropping in price at the start of the year thanks to reduced wholesale costs. However, those same costs have now increased as of July 2024, which has meant some plan prices have started to become a tad more expensive. There are still some good deals to be found, and on the whole, we think a 100Mbps plan presents itself as better value compared to a slower 50Mbps, due to the relatively small difference in cost.

If you feel your home would benefit from even faster downloads, then you'll be interested to learn of the NBN Co's free fibre upgrade program, which is open to 75% of homes and businesses currently stuck on a fixed-line fibre-to-the-node (FTTN) or fibre-to-the-curb (FTTC) connection. Those eligible for a free fibre upgrade are first required to sign up to an NBN plan with download speeds of 100Mbps or higher, which is helping to encourage more people over to some of the fastest NBN plans.

Noteworthy NBN 100 deals

While we’ve picked out the best NBN 100 plans on the market just below, we’ve also dug up all the top deals and discounts from the providers and listed them here for a quick comparison:

Best NBN 100 plans

Deciding on the best NBN 100 plan in Australia can be pretty tricky. Although, there was a time when just AU$6.60 separated the five most affordable providers. Following recent price changes, that's no longer than case, and the difference is closer to AU$25. 

We haven't automatically jumped to the cheapest providers however, but instead have dug a little deeper to determine which providers we think will offer the best overall service.

Best overall NBN 100 plan

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Tangerine | 100Mbps | AU$64.90p/m

Tangerine | 100Mbps | AU$64.90p/m (first 6 months, then AU$84.90p/m)

Tangerine has started the ongoing cost of its 100Mbps plan will increase to AU$85.90p/m from August 1, but if you sign up before then, you'll lock in the current promo price of AU$64.90p/m for your first six months – which is currently the cheapest in the country. 

What's more, Tangerine claims the maximum 100Mbps download speeds, resulting in a perfect combination of speed and value in our opinion. 

• AU$64.90 minimum cost
• AU$898.80 first year cost
• AU$1,1018.80 ongoing cost

Best fast NBN 100 plan

Exetel100MbpsAU$68.99p/m

Exetel | 100Mbps| AU$68.99p/m (first 6 months, then AU$84.99p/m)

We could have chosen Tangerine once again as the best fast NBN 100 plan. But we've chosen Exetel because of its Speed Boost days feature. Along with maximum plan speeds, you get to temporarily boost the speed of your service to the next tier – 250Mbps in this instance – for free. Do note, that you will need an NBN connection type that supports these speeds (FTTP and HFC) but if you do, you're getting much faster speeds without spending any extra. 

• AU$68.99 minimum cost
• AU$923.88 first year cost
• AU$1,1019.88 ongoing cost

Cheapest NBN 100 plan

Flip 100MbosAU$69p/m

Flip | 100Mbos | AU$69p/m (first 6 months, then AU$79.90p/m)

If it's the outright cheapest 100Mbps NBN plan you're looking for, Flip is the way to go...at least for the first 12 months. Its intro price of AU$69p/m is among the cheapest, but it's the ongoing cost that results in it being the most affordable overall.

In the first full price year, however, Kogan is technically the cheapest by around AU$12. But Kogan’s NBN 100 plan only advertises a typical evening speed of 90Mbps, which isn’t as good as Flip’s 97Mbps. That seals the deal in our mind. You may incur an additional upfront fee if you require a modem from Flip, which will cost you AU$199 plus delivery. 

• AU$69 minimum cost
• AU$893.40 first year cost
• AU$958.80 ongoing cost

NBN 100 FAQ

How fast is NBN 100?

NBN 100 plans offer download speeds up to 100Mbps, although actual usage will vary, particularly during the busy hours between 7pm and 11pm. Most NBN providers who offer a plan on this tier don’t report a typical evening speed of 100Mbps, with the average speed sitting at 97Mbps.

There are two types of NBN 100 plan, and what differs between them is their maximum upload speed. The more popular NBN 100/20 plan offers maximum uploads of 20Mbps, while the less common NBN 100/40 plan has a maximum upload speed of 40Mbps.

NBN providers don’t always disclose which of these two plans you’re signing up for, so check the provider’s critical information summary if you’re unsure. In the meantime, the ACCC is pushing for internet providers to be more transparent about upload speeds.

How much does NBN 100 cost?

The market has plenty of variety when it comes to cost for an NBN 100 plan. Prices range between AU$79 to AU$110 a month for an ongoing rate, but the average monthly price among the NBN 100/20 plans we monitor sits just under AU$91 a month, while an NBN 100/40 plan will set you back AU$99 a month on average.

Plenty of telcos will also offer you a six-month discount when you first sign up to an NBN 100 plan, and these prices start around the AU$64 mark.

As you might expect, the telco with the most expensive NBN 100 plans is Telstra. You’ll typically find that Telstra sweetens the deal by offering other inclusions or discounts, such as a modem with 4G back up, and sometimes free subscriptions to Binge, Kayo and others for a limited time.

Can I get NBN 100?

While all connection types can sign up for an NBN 100 plan, not all of them may be capable of getting the full speeds offered by the service. Before signing up with a provider, it's worth double checking what connection type you have – such as hybrid fibre coaxial (HFC) cable or a fibre-to-the-node (FTTN) connection – and asking the telco if it’ll be suitable for the speed tier.

To check what NBN connection type you have, you only need to enter your address on the provider’s website, or check your address on NBN Co’s website. Some providers offer a trial period to test their service, so be sure to make use of this if it’s an option, and let them know if you’re unsatisfied with the speeds you’re receiving. We have a dedicated guide on how to do an NBN speed test if you need.

What providers have NBN 100?

Almost every provider offering an NBN service is offering the NBN 100 tier as its top-rung option, with only a select number of telcos offering the superfast NBN 250 plans and ultrafast NBN 1000 plans above it.

This means that Telstra, Optus, TPG, Aussie Broadband, Exetel, Spintel, Tangerine and plenty of others all have compelling NBN 100 plans to choose from.

NBN 50 vs NBN 100?

As with any purchasing decision, the 'better' option won’t be better for everyone. For light internet users – that’s households of two to four users that stream content and don’t plan to use it for anything more intensive – an NBN 50 plan is likely to be more than enough.

But for anyone currently running into congestion problems, or anyone that wants their download wait time drastically cut down, the extra AU$200 or so per year is certainly a small price to pay for double the download speeds – particularly in the context of a plan that already costs around AU$750 annually, in the case of NBN 50 plans.

Max Langridge
Staff Writer

Max is a senior staff writer for TechRadar who covers home entertainment and audio first, NBN second and virtually anything else that falls under the consumer electronics umbrella third. He's also a bit of an ecommerce fiend, particularly when it comes to finding the latest coupon codes for a variety of retailers. Hailing from the United Kingdom, Max spent a combined five years writing for What Hi-Fi? and Pocket-lint, before moving to Australia in 2018. After a brief stint writing for men’s lifestyle publications, Max is back to working on his first passion of technology.

With contributions from