Optus promo codes and coupon codes in September 2026
10 mobile plans and internet vouchers and Optus discount codes available today
My role as an Editor at CupoNation Australia began in 2023, and I focus on researching and hand-testing codes daily to ensure they are trustworthy. I refresh this page daily, providing the Australian community with a current and verified list of mobile and internet savings. My top recommendation is leveraging the Optus Trade-In program before committing to a new contract. While many expect an instant cart reduction, the reality is that Optus issues a Digital Prepaid Mastercard® within 30 days of assessing your old phone, tablet, or smartwatch. You must try this simple tactic to turn your unused technology into a flexible cash equivalent that can offset your ongoing plan bills or accessory upgrades.
As Australia's second-largest telecommunications network, Optus provides the core infrastructure driving high-speed 5G Plus, satellite, and fibre services for over 10 million subscribers. From a consumer savings standpoint, this massive national footprint positions Optus as the primary challenger to Telstra. This intense market rivalry works heavily in your favour, triggering highly aggressive promotional wars on SIM-only plans, device credits, and streaming bundles that we track in real time to secure you the lowest monthly overheads.
Access 5G home internet plans at Optus starting from $45 per month. Connect your household to fast wireless broadband with zero lock-in contracts.
Pay over 24 or 36 months for the phone and join a mobile plan to earn this 50% markdown. Limited time only.
Get the Google Pixel Watch on an Optus device plan for $20.80 per month over 36 months. Track daily health, heart rate, and GPS workouts from your wrist.
Upgrading your mobile device brings serious performance with advanced AI features, a vivid display, and fast 5G speeds. Sign up for an eligible mobile plan to lower the device price tag significantly while promotional allocations last.
The Optus 7-day network trial is one of the smartest ways to avoid paying for a plan that may not suit your area. Instead of signing up first and hoping the coverage works at home, work, school, or on your commute, you can test the network for 7 days at no cost on an eligible eSIM device. The trial includes 30GB of data, unlimited standard national talk, and up to 1000 standard national texts for use in Australia.
It is available through the My Optus app and is useful if you are comparing providers, moving to a new suburb, or thinking about switching your main number to Optus. We recommend testing it properly rather than only using it at home:
Try it during your normal commute.
Check it inside your workplace, school, or university.
Test streaming, hotspot use, and video calls if those matter to you.
Watch how quickly the 30GB data allowance moves with your habits. Our expert tip is to run the trial before a sale or student plan offer ends. That way, you can decide based on real coverage rather than guessing, then move quickly if the plan price is right.
The My Optus app is useful because it keeps your data usage, bills, recharges, support, and offers in one place. From a savings perspective, the main benefit is visibility. You can see whether you are paying for data you do not use, whether a recharge is due, and whether a better offer is available before committing to another month. We recommend using the app as a bill-control tool, not just a support shortcut:
Check your data usage before upgrading to a higher plan.
Review current offers before paying your next bill or recharge.
Use app support if a voucher, bill credit, or charge looks wrong.
Compare your current plan against newer offers before renewing. Our expert tip is to check your usage over a few billing cycles. If you rarely use your full data allowance, moving to a smaller plan can save more than chasing a larger plan with bonus data.
Optus SubHub can be a useful savings tool if you already pay for streaming, cloud storage, or digital subscriptions. Some eligible Optus mobile and home plans include a $10 or $20 monthly SubHub credit that can be used towards selected subscriptions. The absolute best way to play this ecosystem is by bundling three or more paid platforms, which unlocks an extra 10% multi-service discount. However, avoid the temptation of adding new platforms simply to trigger the discount bracket; true savings come from consolidating services you are already paying full price for elsewhere.
Check these points before relying on the credit:
Confirm your Optus plan actually includes SubHub credit.
Make sure your chosen subscription is eligible through SubHub.
Check whether the credit lasts for 6 months, 12 months, or the life of the plan.
Cancel unused subscriptions before they roll into another paid month. Our expert tip is to use SubHub credit on a subscription you were already paying for outside Optus. That turns the credit into a real monthly savings instead of creating a new bill.
Whether you’re signing up for a new phone plan, NBN, or Optus Sport, an Optus promo code can help you score savings on your monthly bill.
Here’s what you need to do:
Pick a code that works for you from this page.
Add your chosen service or device plan to your cart.
On the cart page, find the "Promo codes & coupons " field.
Paste your promo code and continue to checkout with the lower price.
Optus has a dedicated Deals page where mobile, SIM, internet, and device offers are grouped. Check this page before choosing a plan because the best value may come from bonus data, a reduced monthly rate, a device offer, or a bundle discount rather than a standard promo code.
Students currently enrolled at an Australian university, TAFE, or approved tertiary institution can access Optus student deals when available. Something to keep in mind is that student pricing usually cuts the monthly rate for the first 12 months before reverting to the higher standard price from month 13. We highly recommend setting a calendar alert for month 11 so you can renegotiate or switch before the price hike hits your bank account.
Optus Trade In lets you exchange an eligible mobile phone, tablet, or Wi-Fi smart watch for a Digital Prepaid Mastercard valid for 36 months. Check the trade-in value before upgrading, especially if your old device is sitting unused, as the gift card can help offset your next phone, accessories, or other everyday spending.
Prepaid recharge vouchers can help if you want tighter control over mobile spending. Some larger voucher amounts, such as $180 or $350, may only work with selected plans, so check your plan’s Critical Information Summary before buying one. You can also text VOUCHER to 9999 if you want to send recharge credit to someone else.
Paying your bill physically at an Australia Post outlet or via POSTbillpay incurs an unnecessary account processing fee. Switch your account entirely to direct debit or digital payments inside the My Optus app to completely bypass these micro-charges, keeping your baseline telco costs perfectly clean.
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