Carbon Comms vs Australia Online NBN plans
Carbon Comms is cheaper than Australia Online on 5 of the 5 NBN speed tiers both sell as of 2026-11-08: on NBN 100, Carbon Comms' Carbon Home Fast 100/20 NBN is $84.00/mo ongoing against $95.00/mo for Australia Online's NBN 100 (Fast), $11.00 a month more, both read from the brands' own pages on 2026-11-08.
Prices are the ongoing monthly price including GST, each read from the brand's own page within the last 24 hours; intro offers are shown beside the row and do not decide a tier. A tier only one brand sells is listed, not scored.
Today's answer
The plan that wins this question right now. You sign up with Carbon Comms directly; the price you saw is the price you get.
The plans
14 priced plans, cheapest first. Every plan each brand sells on each shared tier, grouped by tier with the cheaper brand's lineup first; each row links its dated source page and hands off to the brand.
| # | Provider | Plan | Speed tier | $/mo inc GST | Intro price | First 12 months | Est. margin | Price read | Source page | |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 |  Australia Online | Australia Online NBN 12 (Basic I) | 12 | $59.00/mo | – | $708 | $18.05 (33.7%) | 2026-11-08 | dated page | go to Australia Online |
| 2 |  Carbon Comms | Carbon Comms Carbon Home Fast 25/10 NBN | 25/10 | $57.00/mo | – | $684 | – | 2026-11-08 | dated page | go to Carbon Comms |
| 3 | Australia Online | Australia Online NBN 25 (Basic II) | 25 | $69.00/mo | – | $828 | $26.58 (42.4%) | 2026-11-08 | dated page | go to Australia Online |
| 4 | Carbon Comms | Carbon Comms Carbon Home Fast 50/20 NBN | 50/20 | $81.00/mo | – | $972 | – | 2026-11-08 | dated page | go to Carbon Comms |
| 5 | Australia Online | Australia Online NBN 50 (Standard) | 50 | $85.00/mo | – | $1020 | $19.67 (25.5%) | 2026-11-08 | dated page | go to Australia Online |
| 6 | Carbon Comms | Carbon Comms Carbon Home Fast 100/20 NBN | 100/20 | $84.00/mo | – | $1008 | – | 2026-11-08 | dated page | go to Carbon Comms |
| 7 | Carbon Comms | Carbon Comms Carbon Home Fast 100/40 NBN | 100/40 | $88.00/mo | – | $1056 | – | 2026-11-08 | dated page | go to Carbon Comms |
| 8 | Australia Online | Australia Online NBN 100 (Fast) | 100/20 | $95.00/mo | – | $1140 | $25.51 (29.5%) | 2026-11-08 | dated page | go to Australia Online |
| 9 | Carbon Comms | Carbon Comms Carbon Home Fast 500/50 NBN | 500/50 | $82.00/mo | – | $984 | – | 2026-11-08 | dated page | go to Carbon Comms |
| 10 | Australia Online | Australia Online NBN 500 (Superfast) | 500/50 | $95.00/mo | – | $1140 | $25.51 (29.5%) | 2026-11-08 | dated page | go to Australia Online |
| 11 | Carbon Comms | Carbon Comms Carbon Home Superfast 750/50 NBN | 750/50 | $89.00/mo | – | $1068 | – | 2026-11-08 | dated page | go to Carbon Comms |
| 12 | Australia Online | Australia Online NBN 750 | 750/50 | $105.00/mo | – | $1260 | $28.33 (29.7%) | 2026-11-08 | dated page | go to Australia Online |
| 13 | Carbon Comms | Carbon Comms Carbon Home Ultrafast 1000/100 NBN | 1000/100 | $100.00/mo | – | $1200 | – | 2026-11-08 | dated page | go to Carbon Comms |
| 14 | Carbon Comms | Carbon Comms Carbon Home Hyperfast HFC 2000/100 NBN | 2000/100 | $153.00/mo | – | $1836 | – | 2026-11-08 | dated page | go to Carbon Comms |
Tier by tier
- NBN 12: only Australia Online sells this tier, Australia Online sells 1 plan on it from $59.00/mo.
- NBN 25: Carbon Comms is cheaper by $12.00/mo on the cheapest quotable plan each side ($57.00/mo against $69.00/mo, both ongoing); Carbon Comms sells 1 plan on it from $57.00/mo, Australia Online sells 1 plan on it from $69.00/mo.
- NBN 50: Carbon Comms is cheaper by $4.00/mo on the cheapest quotable plan each side ($81.00/mo against $85.00/mo, both ongoing); Carbon Comms sells 1 plan on it from $81.00/mo, Australia Online sells 1 plan on it from $85.00/mo.
- NBN 100: Carbon Comms is cheaper by $11.00/mo on the cheapest quotable plan each side ($84.00/mo against $95.00/mo, both ongoing); Carbon Comms sells 2 plans on it from $84.00/mo, Australia Online sells 1 plan on it from $95.00/mo.
- NBN 500: Carbon Comms is cheaper by $13.00/mo on the cheapest quotable plan each side ($82.00/mo against $95.00/mo, both ongoing); Carbon Comms sells 1 plan on it from $82.00/mo, Australia Online sells 1 plan on it from $95.00/mo.
- NBN 750: Carbon Comms is cheaper by $16.00/mo on the cheapest quotable plan each side ($89.00/mo against $105.00/mo, both ongoing); Carbon Comms sells 1 plan on it from $89.00/mo, Australia Online sells 1 plan on it from $105.00/mo.
- NBN 1000: only Carbon Comms sells this tier, Carbon Comms sells 1 plan on it from $100.00/mo.
- NBN 2000: only Carbon Comms sells this tier, Carbon Comms sells 1 plan on it from $153.00/mo.
How to read this
Prices are the advertised ongoing monthly price including GST, captured from the provider's own site by the hourly index and from comparison sites at baseline; "last confirmed" is the most recent read in which the served price was seen on a source. Estimated margin is the ex-GST retail price minus NBN Co's published wholesale tariff for the tier, and is shown only where that public reference exists. Every figure cites its source on the linked dated page. Errors are possible - check the cited sources. Full method: methodology. Machine-readable: this answer as JSON, MCP, llms.txt.
Related: Carbon Comms on OpenStream: every plan held · Australia Online on OpenStream: every plan held · Carbon Comms vs every other NBN brand · Australia Online vs every other NBN brand · Cheapest NBN 100 plan · Compare every current plan at my address · Is the advertised NBN price the one you keep paying? · Is the cheapest NBN plan worth it? · All answers
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