Best 365-day prepaid mobile plan in Australia for January 2026

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365-day prepaid mobile plans are one of the best ways to slash your phone bill – when broken down on a cost-per-month basis, they're frequently the cheapest way to get mobile service in Australia.

When we decide which 365-day phone plans are the best, we consider two factors:

• How much data?

• How much does it cost?

The price factor can get complicated, because in our experience, we see the cost of 365-day phone plans fluctuate on a regular basis. As for data, according to the ACCC's figures from June 2023, Australians downloaded an average of 15.9GB of data per month on postpaid plans and 7.5GB on prepaid plans. To be on the safe side, the plans we've recommended below offer the equivalent of at least 14GB per month.

Best 365 day long-expiry prepaid plans

Best 365 day plan overall

Lyca Mobile | 600GB (50GB/30 days) | 365-day expiry | $175 ($14.60/month)

Lyca Mobile | 600GB (50GB/30 days) | 365-day expiry | $175 ($14.60/month)
Lyca Mobile has halved the price of its highest data 365 day plan, bringing it down to just $175 (from $360). This plan gets you an impressive 600GB of total data broken into 28 day blocks of 50GB. Per month, it costs the equivalent of $14.60 for 50GB. It also runs on the Vodafone 4G/5G network.

You can also rollover up to 500GB of unused data if you choose to recharge this plan after the first 365 days, but bear in mind that you will have to pay the full $360 on recharge.

Cheapest long-expiry plan

Lyca Mobile | 200GB (17GB/30 days) | 365 day expiry | $220 $110 ($9.17/month)

Lyca Mobile | 200GB (17GB/30 days) | 365 day expiry | $220 $110 ($9.17/month)
Our choice for the cheapest long-expiry plan is another Lyca Mobile plan. Lyca’s Medium 365 Day option is currently half price, costing just $110 for the first 365 days. It includes 200GB, broken down into 30 day blocks of 17GB. While 17GB isn’t a huge monthly allowance, if you’re looking for the cheapest possible long-expiry deal, this is our top recommendation. On a monthly basis, it works out to be under $10 per month ($9.17), making it one of the most affordable plans on the market that offers more than 10GB of data per month.

If you choose to renew after the first year, you can rollover any unused data (up to 500GB), though the price will increase to the full $220. This service also runs on Vodafone’s network and offers access to both 4G and 5G coverage. impressive deal.

Best Telstra network long-expiry phone plan

Boost Mobile | 290GB data (240GB on next recharge) | 365-day expiry | $300

Boost Mobile | 290GB data (240GB on next recharge) | 365-day expiry | $300
If you want to get connected to the Telstra network but don’t want to pay premium fees by going directly to the source, check out this prepaid plan from Boost Mobile instead. Boost is the only provider that offers Telstra 5G connectivity, thanks to its use of the full Telstra mobile network.

Boost’s $300 SIM with 12 month expiry comes with 300GB of data, which is equivalent to 24GB per month for $25 per month which is a decent data allowance for a good price, especially given that you get access to the full Telstra network. Be aware that if you wish to recharge the plan after the first 365 days, you will only get 240GB of data, making the plan less good value.

While this plan does give you access to 5G, do note that download speeds are capped at 150Mbps (5G technically has the potential to reach up to 1Gbps speed or faster), although that kind of cap is common across plans from smaller providers on both the Telstra and Optus networks. As such, you’re arguably not getting the full benefits of 5G, and you may find a more affordable 4G-only long-expiry SIM plan to be just as good when it comes to downloading files, media streaming or browsing the internet.

Is a long-expiry mobile plan right for me?

Reasons to get one...

  • Very much a 'set and forget' plan. Pay once each year
  • Large amount of data included will suit most customers
  • If you use a lot of data one month, you're unlikely need to worry about going over your total allowance

365-day long-expiry phone plans can be a great investment for the majority of users, as they offer a true 'set and forget' structure. Because 365 day prepaid phone plans only require one payment every 365 days, try not to be put off immediately by the initial high cost. When you split it over the course of 12 months, you may find these long-expiry prepaid plans work out to be more affordable than traditional prepaid phone plans, which operate on a monthly basis.

As with any phone plan, the inclusions offered by each provider can differ greatly, which makes it imperative you shop around to find the best deal, which is where we come in. In our experience, we see prices for 365 day prepaid phone plans fluctuate on a regular basis, so what might seem like a great plan one week, might not be the next.

In general, we think 365 day prepaid phone plans can work out to be cost effective. When you split the initial high cost over the course of 12 months, you may find these long-expiry prepaid plans work out to be more affordable than traditional prepaid phone plans, which operate on a monthly basis.

Reasons to not get one...

  • Upfront cost can be expensive
  • May need to ration data to ensure you don't reach annual allowance

When you're searching for a 365-day prepaid phone plan, you'll want to carefully consider how much data you're realistically going to need. The amount of included data advertised is for the whole duration of the plan and not each month, and once you've made a payment, you'll need to make the included data last 365 days.

One of the main downsides to a 365-day long-expiry prepaid phone plan is that if you do reach your annual data allowance before the 12 months is up, you will need to recharge your service to be able to continue using it. If you do go through all of your data, then your provider will either continue to offer 'unlimited' data but at a much slower maximum speed; will charge you a fee per megabyte or per gigabyte you use; or potentially charge you a full amount and effectively reset your service for another year.

And because these long-expiry mobile plans have an expensive upfront cost, you may find you're unable to pay at the time of recharge, leaving you without a phone plan. You may therefore find the best prepaid plans are a better option for you.

With contributions from