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

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The best NBN 100 plans should allow four or more people to use the internet at the same time, whether they’re streaming in 4K or downloading large files. While faster NBN 250 plans and NBN 1000 plans are also available, 100Mbps is perfect for families or small households with heavy internet usage.

It’s also becoming more affordable to get an NBN 100 plan, and that’s because NBN Co officially reduced the wholesale pricing of this tier in December 2023. There have been a small number of providers who have made their NBN 100 plans cheaper as a result, while others such as Optus are offering an epic discount for anyone who makes the switch over to a fast internet.

In addition to lower prices, NBN Co also has a 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

Best overall NBN 100 plan

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ExetelNBN 100Unlimited dataNo lock-in contractAU$68.99p/m (first 6 months, then AU$84.99p/m)

<a href="https://techradar.whistleout.com.au/Transact?pai=2&si=377&gi=307&pi=3152&ct=0&ci=13714&byo=true&ai=42&ppt=0&subtag=hawk-custom-tracking&r=hawk-article-url" data-link-merchant="whistleout.com.au"">Exetel | NBN 100 | Unlimited data | No lock-in contract | AU$68.99p/m (first 6 months, then AU$84.99p/m)

Exetel once again gets our recommendation for the best NBN 100 plan overall. You’ll pay AU$68.99 a month for your first half-year on the service, and after that, its regular price is AU$84.99. We’ve found that <a href="https://techradar.whistleout.com.au/Transact?pai=2&si=454&gi=1792&pi=12200&ct=0&ci=12065&byo=true&ai=42&ppt=0&subtag=hawk-custom-tracking&r=hawk-article-url" data-link-merchant="whistleout.com.au"" data-link-merchant="whistleout.com.au"">Spintel has a slightly cheaper ongoing price of AU$79.95 a month, but the reason we’ve chosen Exetel instead is its excellent Speed Boost feature. Speed Boost lets you bump up your speed to NBN 250 for five days each month which is useful, but if you find you’re not using it after six months, you can always switch to Spintel.

Total minimum cost: AU$68.99 | Total cost for first year: AU$923.88 | Yearly cost after discount: AU$1,019.88

Best fast NBN 100 plan

ExetelNBN 100Unlimited dataNo lock-in contractAU$68.99p/m (first 6 months, then AU$84.99p/m)

<a href="https://techradar.whistleout.com.au/Transact?pai=2&si=377&gi=307&pi=3152&ct=0&ci=13714&byo=true&ai=42&ppt=0&subtag=hawk-custom-tracking&r=hawk-article-url" data-link-merchant="whistleout.com.au"">Exetel | NBN 100 | Unlimited data | No lock-in contract | AU$68.99p/m (first 6 months, then AU$84.99p/m)

Exetel’s NBN 100 plan comes with a maxed-out typical evening speed of 100Mbps plus a typical upload of 17Mbps during the peak period. Not only that, Exetel also gives you five Speed Boost days each month to push your plan up to 250Mbps, and you can use them any time you want. Anything that’s unused rolls over into a bank which holds a maximum of 30 Speed Boost days. It’s worth noting that <a href="https://techradar.whistleout.com.au/Transact?pai=2&si=454&gi=1792&pi=12200&ct=0&ci=12065&byo=true&ai=42&ppt=0&subtag=hawk-custom-tracking&r=hawk-article-url" data-link-merchant="whistleout.com.au"" data-link-merchant="whistleout.com.au"">Spintel is slightly cheaper and also offers 100Mbps download speeds, making it a good alternative if you’re not using the Speed Boost feature.

Total minimum cost: AU$68.99 | Total cost for first year: AU$923.88 | Yearly cost after discount: AU$1,019.88

Cheapest NBN 100 plan

FlipNBN 100Unlimited dataNo lock-in contractAU$69p/m (first 6 months, then AU$79.90p/m)

<a href="https://www.flipconnect.com.au/cheap-nbn-plans?utm_source=techradar&utm_medium=cpa&utm_campaign=nbn23&utm_term=value_100?subtag=hawk-custom-tracking" data-link-merchant="flipconnect.com.au"" target="_blank">Flip | NBN 100 | Unlimited data | No lock-in contract | AU$69p/m (first 6 months, then AU$79.90p/m)

Flip has one of the cheapest intro offers in the NBN 100 speed tier, as well as one of the lowest ongoing rates. While Kogan’s NBN 100 plan is a smidge cheaper at AU$78.90 a month, its typical evening speed of 90Mbps isn’t as good as Flip’s, which is now close to maxing out its typical evening speed at 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. 

Total minimum cost: AU$69 | Total cost for first year: AU$893.40 | Yearly cost after discount: AU$958.80

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 at 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.

Jasmine Gearie
Ecommerce Editor

Jasmine Gearie is an Ecommerce Editor at TechRadar Australia, with a primary focus on helping readers cut through the jargon to find the best mobile and internet plans for their needs. She crunches the numbers to maintain dedicated guides to the latest phones, NBN and broadband plans of all types, and covers the important telco industry news. She also hunts down tech deals on laptops, phones, gaming consoles and more, so readers know where to buy the products they want for the cheapest prices.