Boost Mobile Australia Promo Codes: Tested & Working | 10% off | October 2026

Boost Mobile Australia has a mix of percentage discounts and fixed-price prepaid SIM offers, with the strongest choice depending on the recharge value and data allowance you need. Frugal Feeds checks the listed promo codes so the current offers are easier to compare before checkout.

Compare the Fixed-Price SIM Offers Before Using a Percentage Code

The fixed-price offers can deliver a clearer saving than the 10% discount when you are buying one of the included SIMs. BOOST13 and BOOST9 are the lowest-cost options listed, both reducing a $30 SIM to $13 or $9 respectively. The $9 price represents a stated saving of $21, and the same $30 SIM offer is also listed under SAVE21.

For a longer-expiry or higher-value purchase, the annual-style SIM offers may be more relevant. BOOST170 lists a $200 SIM for $170, with 140GB included in the offer wording. BOOST260 lists a $300 SIM for $260, while its description also references 260GB for $250. As those details differ within the offer wording, check the price and data shown after the code is applied before paying.

10OFFNEW offers 10% off, so it is most useful when its discount produces a better result than the advertised fixed price for the SIM you have selected. It is not automatically the best code for every purchase. A direct comparison at checkout between the percentage reduction and the relevant SIM-specific code is the practical way to judge it.

Data Allowance and Expiry Matter as Much as the Upfront Price

The current no-code offers point to two different prepaid approaches: up to 85GB for 28 days, or up to 240GB to use across a full year. The better value depends on how regularly you use mobile data and how often you prefer to recharge.

Boost Mobile Australia describes its prepaid plans as paid upfront. Its 28-day and long-expiry plans include unlimited talk and text, according to the retailer information, while some plans may allow unused data to roll over to the next recharge. Plan-level inclusions should still be checked on the selected product page, as the coupon table does not specify every plan feature.

Useful Boost Mobile Australia Details for a New SIM

The listed offers include free shipping to anywhere in Australia, with no code required. That means delivery should not change the comparison between the available SIM discounts. The page also lists flexible prepaid service with no lock-in contracts, which is useful for people who do not want a fixed-term mobile arrangement.

Boost Mobile Australia states that its plans run on the full Telstra Prepaid Mobile Network. It also says customers can keep an existing number by selecting the option to keep their number during activation. For a new connection, Boost Mobile Australia offers eSIM support through the My Boost Mobile app, alongside physical SIM options.

The retailer also promotes refurbished devices, with a free $39 SIM carrying 28 days expiry included with all refurbs, plus free express delivery and a 12-month warranty. This is separate from the coupon codes in the table, so treat it as a device bundle inclusion rather than a discount that can be assumed to combine with a SIM promo code.

Applying a Boost Mobile Australia Promo Code

Use the code attached to the specific SIM offer, rather than assuming codes such as BOOST13, BOOST170 and BOOST260 apply across the full range. Fixed-price codes are described against particular recharge values, while the 10% offer is expressed as a percentage discount.

If a code does not apply, the most useful check is whether the SIM in your basket matches the offer wording and whether the checkout total reflects the advertised deal. The offers are marked limited time only, so the final price shown by Boost Mobile Australia is the amount to rely on before completing payment.