These prices were checked on 15 October 2026, more than 30 days ago. Check the provider's page before you buy.
Aussie Broadband · Postpaid SIM-only · Optus network
Aussie Broadband Essential 100GB
$50 a month, 100GB a month. Nothing we track with as much data costs less in the first year.
- First year
- $600
- Two years
- $1,200
- Average a month
- $50
- Per GB, year one
- $0.50
Same price in year two
- eSIM
- 5G
- Data sharing
- No lock-in
- Slows when data runs out
How it compares
- Ranks 38 of 52 for first-year cost among plans with 50GB to 150GB a month.
- $0.50 a GB in year one: about the same as the median of $0.49 for similar plans.
- 10 plans with at least as much data cost less in year one. The cheapest is TPG 100GB, $195 less.
What you get
- Data
- 100GB a month. Slowed to 1.5Mbps, never charged.
- Calls and texts
- Unlimited standard national calls and texts, voicemail, 13, 1300 and 1800 numbers
- Overseas calls
- Some overseas minutes included. $300 of international call credit (calls to selected countries only; then pay as you go)
- Roaming
- Off by default and switched on by contacting Aussie Broadband. $5 buys a 5GB day pack in Zone 1 countries
- Renews
- Postpaid bill a month
- Features
- 5G, eSIM, Data sharing, No lock-in
- Extras (not counted in the price)
- Data can be shared with other Aussie Broadband SIMs on the same account
- Data top-ups are sold in the MyAussie portal
Download speeds are capped at 150Mbps.
When the monthly data is used up, speeds slow to 1.5Mbps; there are no excess usage charges (Critical Information Summary).
$5 a month off when bundled with an Aussie Broadband internet plan; we don't count that.
Plans with similar data
Plans with 50GB to 150GB a month, cheapest first year first.
| # | Plan | Data a month | First year | Two years |
|---|---|---|---|---|
| 1 | TPG50GB | 50GB | $315 | $735 |
| 2 | iiNet50GB | 50GB | $315 | $735 |
| 3 | Pivotel50GB | 50GB | $315 | $735 |
| 4 | Lyca MobileS 50GB | 54GB | $330 | $720 |
| 5 | Tangerine50GB | 50GB | $360 | $792 |
| 6 | Moose Mobile50GB | 50GB | $360 | $720 |
| 7 | Aussie Broadband100GB | 100GB | $600 | $1,200 |
Head to head
Your first year, payment by payment
12 payments in your first year, all at the standard price. That adds up to $600.
| Payment | Day | You pay | Data |
|---|---|---|---|
| 1 | 0 | $50 | 100GB |
| 2 | 30 | $50 | 100GB |
| 3 | 61 | $50 | 100GB |
| 4 | 91 | $50 | 100GB |
| 5 | 122 | $50 | 100GB |
| 6 | 152 | $50 | 100GB |
| 7 | 183 | $50 | 100GB |
| 8 | 213 | $50 | 100GB |
| 9 | 243 | $50 | 100GB |
| 10 | 274 | $50 | 100GB |
| 11 | 304 | $50 | 100GB |
| 12 | 335 | $50 | 100GB |
When the data runs out
When the 100GB runs out, you're slowed to 1.5Mbps instead of being cut off or charged. That is enough for messages and maps, but slow for video. Whether unused data carries over is not recorded for this plan, so check the Critical Information Summary.
Is it good value?
- Year one works out at $0.50 a GB, the 51st cheapest of the 115 plans we track.
- The price stays the same all year, so there is no deal to run out.
- There is no lock-in contract, so you can leave when a cheaper plan turns up.
- $300 of international call credit (calls to selected countries only; then pay as you go).
Questions people ask
What network does Aussie Broadband 100GB use?
Aussie Broadband uses the Optus network. It rents capacity from Optus, so coverage follows Optus's towers. Check Optus's coverage map for your street.
What happens when the deal ends?
There is no deal on this plan right now. It costs $50 a month.
Can I use it overseas?
Off by default and switched on by contacting Aussie Broadband. $5 buys a 5GB day pack in Zone 1 countries.
Is there a contract?
No. It has no lock-in contract. It renews on your monthly bill.
How was this checked?
On 14 October 2026, from Aussie Broadband's own pages. Prices older than 30 days are hidden from the comparison. We are not paid by providers to rank them.
Sources
Checked 14 October 2026 on Aussie Broadband's own pages: Aussie Broadband SIM-only mobile plans · Critical Information Summary: Mobile Voice and Data 5G plans (1 July 2026). Always read the Critical Information Summary before you buy.