Lowest 1st-year cost
~25.0 MbpsFibre and FTTN • Typical evening
$73.00/mofor 12 mos
$83.00/moongoing
$438.006 months
$876.00first yearSave $120 promo
$120.00Save 12%
Save $120 intro
No lock-inProvider guide
Optus plans compared.
We track 4 Optus plans. The cheapest broadband plan, Basic NBN 25/10, costs $876 over the first 12 months.
Prices checked 30 October 2026 from Optus's official plan pages.
- Plans tracked
- 4
- Cheapest broadband, year one
- $876
- CGNAT opt-out
- Paid static IP only
- Notice to cancel
- 30 days
Optus NBN & broadband plans
Sorted by total cost over the first 12 months, including the promo period.
~50.0 MbpsFibre and FTTN • Typical evening
$87.00/mofor 12 mos
$97.00/moongoing
$522.006 months
$1044.00first yearSave $120 promo
$120.00Save 10%
Save $120 intro
No lock-in~500.0 MbpsFibre • Typical evening
$69.00/mofor 6 mos
$109.00/moongoing
$414.006 months
$1068.00first yearSave $240 promo
$240.00Save 18%
Save $240 intro
No lock-in~820.0 MbpsFibre • Typical evening
$119.00/mofor 12 mos
$129.00/moongoing
$714.006 months
$1428.00first yearSave $120 promo
$120.00Save 8%
Save $120 intro
No lock-inOptus price changes
Every price change our daily checks have recorded, newest first.
| Date | Plan | Change |
|---|---|---|
| 7 Oct 2026 | Basic NBN 25/10 | Promo price: $68 → $73/mo |
| 7 Oct 2026 | Everyday NBN 50/20 | Promo price: $82 → $87/mo |
| 7 Oct 2026 | Ultrafast NBN 1000/100 | Promo price: $114 → $119/mo |
| 7 Sep 2026 | Basic NBN 25/10 | Promo price: $73 → $68/mo |
| 7 Sep 2026 | Everyday NBN 50/20 | Promo price: $87 → $82/mo |
| 7 Sep 2026 | Ultrafast NBN 1000/100 | Promo price: $119 → $114/mo |
Optus questions
What is the cheapest Optus NBN plan?
Basic NBN 25/10 at $73/mo for 12 months, then $83/mo. That is $876 over the first year (checked 30 October 2026).
Does Optus let you opt out of CGNAT?
Not for free. Optus only offers a public IP through a paid static IP add-on.
Do you need to give Optus 30 days notice to cancel?
Yes. Optus asks for 30 days notice, so you may pay for part of a month after you switch.
Has Optus raised its prices recently?
We haven't recorded any ongoing price rises for Optus since 7 September 2026. Promo prices have changed; see the table above.
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