Prepaid SIM Australia 2026

Pay upfront, no bills, no surprises at the end of the month.

A prepaid SIM gives you a fixed amount of calls, texts and data for a fixed period, paid before you use it. No monthly bill, no contract, no bill shock. Here is how prepaid works in Australia, why long-expiry plans are quietly the best deal in the market, and which prepaid SIMs are worth knowing about.

No surprise charges. You pay before you use, so you always know exactly what you are spending.

365-day plans available. One payment, a whole year of service. Set and forget.

No lock-in. Move providers between recharges with zero penalties.

The short answer

A prepaid SIM is a mobile plan you pay for upfront. You recharge a set amount, use it for a fixed period, then recharge again to continue. The two strongest prepaid options in Australia right now are Lyca on the Vodafone network and Superloop on the Telstra network. For absolute best value, Lyca's 365-day long-expiry plans give a whole year of service for one payment, often well under $20 per month effective.

The basics

How prepaid SIMs work in Australia

Prepaid is simple: you pay for your plan before you use it, not after. Where postpaid bills you at the end of each month for what you actually used, prepaid gives you a set amount of calls, texts and data for a fixed period upfront. When that period ends, your service pauses until you recharge to start a new one.

Most prepaid plans in Australia run on 28 or 30-day cycles, but long-expiry options stretch this out to 90, 180 or 365 days for a single upfront payment, usually at much better value per month than recharging monthly. Almost every current AU prepaid plan includes unlimited calls and texts in Australia by default, so the differences come down to data allowance, recharge length, included extras (international calls, data banking, 5G), and price.

No contract, no credit check, no monthly bill. Move providers between recharges with zero penalties. Stop using it for a month and you stop paying. That last point is what makes prepaid genuinely different from postpaid.

Recharge cycles

28-day, 30-day, or 365-day, which suits you?

Prepaid plans in Australia come in three main cycle lengths. The right one depends on how predictable your usage is and whether you want to think about renewals every month or once a year.

28days

Monthly (28-day)

The standard prepaid cycle. Lyca and most prepaid telcos use 28-day periods, so you pay 13 times a year rather than 12. Slightly more recharges, but the lowest upfront cost per cycle.

Suits People who want the lowest upfront cost and full flexibility to switch providers regularly.

30days

Calendar (30-day)

Superloop uses 30-day cycles, which means 12 recharges a year instead of 13. The same effective cost over a year as a 28-day plan, but with cleaner calendar alignment.

Suits People who prefer one recharge per calendar month rather than every four weeks.

365days

Long-expiry

One payment, a whole year of service. Data is split into 30-day blocks so a year's allowance does not vanish in a week. Effective monthly cost usually well under a standard 28-day plan, especially during intro promos.

Suits Set-and-forget users, kids' phones, second devices, anyone happy to lock in price for a year.

The long-expiry math

One payment for a year, and the per-month cost almost always wins.

365-day prepaid plans look expensive at first glance, the sticker price is usually two to four hundred dollars. But the actual math is much friendlier than a monthly plan once you break it down. And with new-customer intro promos, the first year often lands at well under $20 effective per month.

Lyca Medium 365-day (intro)

$150

Data included (split in 30d blocks)

200 GB

Months of service

Effective per month

$12.50

Best prepaid plans, May 2026

Prepaid plans worth knowing about

Four prepaid options that cover the spread, lowest upfront cost, best long-expiry value, biggest data on Telstra's network, and the entry 5G option. Prices verified May 2026. Promotional prices for new customers often run lower than the ongoing rate.

VALUE PICK

Lyca Unlimited 20

Vodafone network

Data

20GB

Price

$20/28d

Unlimited national calls and SMS in Australia
Unlimited international calls to selected countries
Data rollover up to 500GB
Auto-renew every 28 days, cancel anytime
eSIM or physical SIM

View Lyca Mobile

Lyca Medium 365 Day

Vodafone network

Data

200GB / yr

Price

$240/365d

200GB split into 30-day blocks (around 17GB/month)
Unlimited calls and SMS in Australia
One payment for a full year, no monthly recharge
5G enabled
eSIM or physical SIM

View Lyca long-expiry

Superloop Basic 5G

Telstra network

Data

35GB

Price

$35/30d

5G access on the Telstra network (speed-capped)
Unlimited calls and SMS in Australia
Unlimited international calls to 15 countries
Data banking up to 1000GB on auto-renewal
30-day cycles (12 a year)

View Superloop

Superloop Plus 5G

Telstra network

Data

130GB

Price

$50/30d

5G access at higher speed tier (up to 250Mbps)
Unlimited calls and SMS in Australia
Unlimited international calls to 15 countries
Data banking up to 1000GB
Heavy-use friendly with rollover headroom

View Superloop

Prices verified May 2026 from each provider's site. Intro promos run frequently and end-dates change, the price you see at sign-up may be lower than the ongoing rate above. Lyca runs on the Vodafone network in Australia, Superloop runs on the Telstra wholesale network.

Getting started

How to activate a prepaid SIM in Australia

Activation usually takes ten to thirty minutes. The steps are similar across providers, you sign up, verify ID, choose a number, and pick a plan. Here is what to expect.

Order the SIM (or pick eSIM)

Sign up online with Lyca or Superloop. Choose physical SIM (posted to you) or eSIM (downloaded instantly). eSIM is faster, no waiting for postage, you can activate the same day.

Verify your identity

Australian law requires ID verification for all mobile services. You will need a driver's licence, passport, or other accepted ID. Each person can activate up to five SIMs across providers per regulatory limit.

Choose your number, or port your existing one

Pick a new mobile number from the provider's list, or port your existing AU number across (free, takes a few hours). There is no PAC code step in Australia, you just give the new provider your old number and they handle the transfer.

Pick a plan and pay upfront

Choose your recharge plan (28-day, 30-day or 365-day), pay by card or PayPal, and you are done. Auto-renew is usually available if you want it, and you can turn it off whenever.

Insert the SIM or scan the eSIM

Pop the physical SIM into your phone, or scan the eSIM QR code from your phone settings. The service activates within minutes. If you ported a number, your old SIM stops working shortly after activation.

FAQ

Common questions on prepaid SIMs

What is a prepaid SIM in Australia?

A prepaid SIM is a mobile plan you pay for upfront, before you use it. You recharge a set amount, use it over a fixed period (most commonly 28 or 30 days, but 90, 180 and 365-day plans are common too), then recharge again to continue. There is no monthly bill, no contract, and no surprise charges. When your recharge expires, service pauses until you renew.

What is the best prepaid SIM in Australia?

There is no single best prepaid SIM, it depends on what you want. For low monthly cost with unlimited calls and texts, Lyca's $20/28-day plan with 20GB is hard to beat. For 5G access on the Telstra network with data banking, Superloop's prepaid range works out well. For set-and-forget value, Lyca's 365-day long-expiry plans give a year of service in one payment, often at intro prices well below the ongoing rate.

How does a 365-day prepaid SIM work?

You pay one upfront amount and the SIM runs for 365 days, no monthly recharges needed. Data is usually split into 30-day blocks so you do not blow through a year's allowance in a week. At the end of the 365 days, you either recharge for another year or move on. Long-expiry SIMs are excellent for set-and-forget users, kids' phones, second devices and anyone who wants to lock in a price for a year.

What is the difference between prepaid and postpaid?

Prepaid means you pay upfront for a fixed period. When the period ends, service stops until you recharge. Postpaid means you are billed at the end of each month for what you used. Both are typically no lock-in in Australia. Prepaid suits people who want strict cost control or set-and-forget renewals. Postpaid suits people who prefer not to think about recharge dates and want one regular bill.

Can I roll over unused data on a prepaid plan?

On many AU prepaid plans, yes. Lyca rolls over up to 500GB of unused data when you recharge on the same or higher plan within 48 hours. Superloop banks up to 500GB on its cheaper plans and 1000GB on its higher-tier plans, with similar rules. You generally need to recharge before your current plan expires to keep the banked data.

How do I activate a prepaid SIM in Australia?

After buying the SIM (online, physical card or eSIM), follow the provider's online activation steps. You confirm your identity (driver's licence, passport, or other ID), choose your number (or port your existing one), pick a plan, and pay. Activation usually completes within an hour, often within minutes. With an eSIM, the QR code arrives by email and you scan it from your phone settings.

What happens if I forget to recharge my prepaid SIM?

Your service pauses when your current recharge expires. You typically have a grace period of a few weeks to recharge and resume using the same number. After that grace period, the number can be recycled. Long-expiry plans are particularly worth setting a reminder for, missing a 365-day recharge is more annoying than missing a 28-day one.

Can I keep my mobile number on a prepaid SIM?

Yes. When you sign up with a new prepaid provider, you give them your existing mobile number and they handle the port from your old provider. There is no PAC code step in Australia, the port usually completes within a few hours, and you do not lose your number during the switch.

Ready to compare prepaid plans side by side?

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