Best NBN 100 plans: compare your options for fast NBN

Superloop | Unlimited data | No lock-in contract | AU$75p/m (for 6 months, then AU$89p/m)

Superloop’s Family NBN 100/20 is our top pick this month, namely for its low cost. Typically, its 97Mbps plan would set you back AU$89p/m but with its current introductory offers for new residential customers, you’ll save AU$84 over the first six months — and it’ll cost you under AU$1,000 for the first year.

Additionally, the telco offers you five Speed Boost days per month, which allows you to jump to the next speed tier of 250Mbps. You can bank up to 30 days total, so you can save them for a rainy day (or week). The plan also includes a free Amazon eero6+ router but you’ll have to pay an extra fee for it if you decide to cancel your service before 18 months is up.

Minimum monthly cost: AU$75 | Total cost for first 12 months: AU$984 | Yearly cost after discount: AU$1,068

Buddy Telco | Unlimited data | No lock-in contract | AU$75p/m (for 6 months, then AU$85p/m)

Buddy's Speedy NBN 100 plan will save you AU$10p/m for the first six months — that's AU$60 total — before the price increases to AU$85p/m. The plan promises to reach 98Mbps download speeds during busy evening hours.

This plan does come with a speed caveat but the 2Mbps difference will not likely make much of a noticeable real-world change. With that in mind, you'll save AU$60 in your first year and have a relatively low ongoing cost for an NBN 100 plan, so that's a big win for us.

Total minimum cost: AU$75 | Total cost for first 12 months: AU$960 | Yearly cost after discount: AU$1,020

Spintel | Unlimited data | No lock-in contract | AU$65p/m (for 6 months, then AU$81.95p/m)

Spintel offers sensational value for a low cost. Across all NBN 100 plans, the offering has one of the lowest first yearly costs of a modest AU$881.70 and one of the cheapest ongoing rates after the discount ends.

There’s little in the way of extra features with this plan – which will likely go some way to explaining the low cost – but if you’re just searching for a no-frills NBN plan to get you connected, Spintel is well worth your attention.

Total minimum cost: AU$65 | Total cost of first 12 months: AU$881.70 | Yearly cost after discount: AU$983.40

Dodo | NBN 100 | Unlimited data | No lock-in contract | AU$64.80p/m (for 6 months, then AU$88.90p/m)

This Dodo NBN 100 plan is currently the cheapest NBN 100 plan in Australia, with a saving of AU$24.10p/m for the first six months. Not only does it come in at under AU$950 for the first year, but Dodo's plan also advertises the maximum 100Mbps typical evening speeds.

However, Dodo is the cheapest plan for the first six months, so you may want to consider switching to another plan like Flip's NBN 100 plan, if you want to maximise savings on similar speeds.

Total minimum cost: AU$64.80 | Total first year cost: AU$922.20 | Yearly cost after discount: AU$1,066.80

Exetel | Unlimited data | No lock-in contract | AU$75.99p/m using code WHISTLEOUT24 (for 6 months, then AU$94.99p/m)

Exetel's NBN 100/40 plan is currently one of the cheapest plans for most people. As with the telco's 100/20 NBN plan, you can expect the full 100Mbps speed during the busy evening period. As for upload speeds, Exetel claims you'll get 34Mbps during the busy evening hours. Plus, Exetel gives you five free Speed Boost days, which boosts your service to the NBN 250/25 speed tier.

Total minimum cost: AU$75.99 | Total cost for first year: AU$1,025.88 | Yearly cost after discount: AU$1,139.88

Tangerine | Unlimited data | No lock-in contract | AU$74.90p/m (for 6 months, AU$89.90p/m)

We mention Tangerine here again, as it's the cheapest 100/40 plan currently available — particularly, after the introductory offer ends. With 34Mbps uploads, this plan doesn't quite reach theoretical maximum speeds, but it's unlikely to have much of a real-world difference.

Much like the 100/20 plan, you can expect to achieve the full 100Mbps download speeds during the busy evening hours.

Total minimum cost: AU$74.90 | Total cost for first year: AU$988.80 | Yearly cost after discount: AU$1,078.80

Optus | NBN 100 | Unlimited data | No lock-in contract | AU$89p/m (for 6 months then AU$99p/m)

Retailing at AU$99 p/m, this Optus introductory offer will save you AU$10p/m for the first six months — that's a saving of AU$60 — before the price increases.

According to ACCC data, Optus delivers 100.6% of advertised download speeds across all hours of the day — meaning you can reasonably expect to reach 100Mbps during the peak evening hours of 7-11pm.

The only thing to note though, is that this plan's minimum cost is AU$395, as it includes the modem. However, you won't pay any additional fees for the modem if you remain connected for 36 months or more.

Minimum monthly cost: AU$395 (including modem fee) | Total cost for first 12 months: AU$1,128 | Yearly cost after discount: AU$1,188

TPG | Unlimited data | No lock-in contract | AU$79.99p/m (for 6 months, then AU$89.99p/m)

TPG's NBN 100 plan is the cheapest of the three major telcos, but you will need to pay AU$99.95 if you require a modem to be supplied. That said, it does advertise the full 100Mbps speeds now, whereas it previously only claimed to reach 95Mbps during the busy evening hours.

You can bring your own modem if you wish, or if you don't already own one, you can buy your own and claim an AU$100 rebate.

Total minimum cost: AU$79.99 | Total cost for first year: AU$1,019.88 | Yearly cost after discount: AU$1,079.88

Telstra | Unlimited data | No lock-in contract | AU$100p/m (for 6 months, then AU$110p/m)

Telstra’s NBN 100 plan is the most expensive in Australia, there's no beating around the bush. You are promised maximum speeds during the evening hours and a modem with 4G backup to help soften the blow. Right now, Telstra has shaved AU$60 off the plan, but it doesn't make much of a drastic price difference.

Being a Telstra customer does bring other perks, such as deals on various streaming services, including Binge and Spotify.

Total minimum cost: AU$110 | Total first year cost: AU$1,260 | Yearly cost: AU$1,320