Looking for an Optus coupon code? Get up to $300 back
You can access Optus cashback offers and discounts across several services, including prepaid and postpaid SIM-only plans, NBN plans and devices. Here's a rundown of what's up for grabs.
Right now, when you sign up for an eligible prepaid SIM, postpaid SIM, or phone plan through Finder, you'll get cashback of up to $300.
This is in addition to offers from Optus itself.
Optus coupon codes and discounts for March 2026
Optus discounts on prepaid SIMs
Optus is running bonus data offers on most of its month-to-month and long-expiry prepaid plans.
There are also a couple of discounts. For example, its $39 28-day expiry plan will cost you just $13 on activation.
You will also receive 45GB on each of the first 3 recharges before the allowance drops down to 25GB ongoing.
When you sign up through Finder, you can score $100 cashback on its 365-day prepaid plan and 186-day expiry plan, or $50 on its monthly prepaid offers.
Optus discounts on postpaid SIM plans
Optus is offering a $10 a month discount on its 360GB Promo plan for the first year.
You'll pay $69 a month for the first 12 months, then $79 ongoing.
It also includes a $10 monthly credit for 12 months to use on subscriptions like Netflix and Amazon Prime via Optus SubHub.
Regardless of what postpaid SIM plan you choose, you'll get a $100 reward when you sign up through Finder.
Optus discounts on phone plans
Optus is running device offers across popular phone brands including Apple and Google.
For instance, you can save $500 on the iPhone Air when you sign up to a 24- or 36-month phone repayment plan.
Or, you can get a bonus Google Pixel 9a on any of the model in the Pixel 10 lineup
Plus, you can get a $300 reward when you sign up to an Optus phone repayment plan through Finder.
Optus NBN discounts
You can save up to $25 a month for the first 12 months on Optus's NBN promo plans (NBN 100 and NBN 500). These plans will cost you $94 a month for the first 12 months. After that, the price will jump to $119 a month.
A bonus Wi-Fi Booster is also included when you have a compatible Optus modem with your plan.
This offer is available until 8 April 2026.
UPDATED 17 March 2026: We updated the availability of multiple Finder Reward offers and the discount available on Optus prepaid plans.
Sources
Ask a question