What Does Dedicated Fibre Actually Cost vs NBN for Business in 2026?
In Australia in 2026, dedicated fibre for business typically costs between $400 and $2,500+ per month, while business NBN runs about $85 to $250 per month. Entry-level dedicated-grade fibre (nbn Enterprise Ethernet) often starts around $400/month with $0 install on eligible sites. True private dedicated fibre (DIA) with construction can run from ~$800 to several thousand per month. Final pricing is always quote-based, because location decides the cost. These are indicative 2026 ranges (ex GST) and will vary by address. Below, we break down each tier, what drives the price, and how to know which one you actually need. How much does Dedicated Fibre Cost in Australia? Here’s the honest range across the three main business connectivity tiers: Connection type Typical monthly cost (ex GST) Install Best for Business NBN $85 – $250 Low or $0 Small business, general use nbn Enterprise Ethernet ~$400 – $1,000+ Often $0 on eligible sites SMBs wanting symmetric, SLA-backed fibre True dedicated fibre (DIA / private) ~$800 – $2,500+ $0 on-net; $1,000s–$10,000s+ off-net Uptime-critical, high-bandwidth, enterprise Most Australian businesses pay between $400 and $2,500 per month for dedicated fibre, depending on the tier and location. Entry dedicated-grade fibre (Enterprise Ethernet) starts near $400/month; fully private, uncontended DIA circuits with higher SLAs and possible construction sit higher. There’s no single sticker price because cost is driven by your address. Why is Dedicated Fibre pricing so hard to find online? This is the real reason competitors don’t publish numbers and it’s not (only) that they’re hiding them. Dedicated fibre pricing depends heavily on where your building is relative to existing fibre: So the same 1Gbps service might be $600/month for a CBD office that’s on-net, and far more (plus a build fee) for a site that isn’t. That’s why every serious provider quotes per address. It’s not evasion — it’s physics and civil works. Dedicated fibre vs business NBN: What’s the Real Difference? They’re not the same product at a different price they’re different products. Here’s what you’re actually paying for. Factor Business NBN Dedicated fibre (DIA) Bandwidth Shared / contended Dedicated / uncontended Speeds Often asymmetric Symmetric (same up/down) Consistency at peak Can slow down Consistent, guaranteed Uptime SLA Basic business SLA Strong (e.g. 99.95%) with rebates Fault response Standard Priority (e.g. 4-hour eSLA) Latency Higher, variable Low, stable Monthly cost $85–$250 $400–$2,500+ Dedicated fibre is better when uptime and consistent speed are business-critical; business NBN is better for cost-conscious general use. NBN shares bandwidth and can slow at peak times, while dedicated fibre gives you uncontended, symmetric speeds with a strong uptime SLA. Most small offices are fine on NBN; businesses that can’t afford downtime pay for dedicated. The key phrase is contended vs uncontended. On NBN, you share capacity with other users, so speeds can dip when the network’s busy. Dedicated fibre reserves the bandwidth for you alone you get what you pay for, all the time. What about NBN Enterprise Ethernet? There’s a tier between cheap NBN and expensive private fibre that suits a lot of Australian SMBs: nbn Enterprise Ethernet. It delivers symmetric, business-grade fibre over the nbn network, with SLA-backed uptime (commonly 99.95%) and priority fault response at a lower price than a fully private circuit. Better still, more than 97% of Australian businesses are now eligible for a $0 fibre upgrade to an eligible site, because nbn often covers the build cost. Is NBN Enterprise Ethernet the same as Dedicated Fibre? It’s dedicated-grade, but delivered over the nbn network rather than a fully private circuit. Enterprise Ethernet gives you symmetric speeds (100Mbps–1Gbps), a strong uptime SLA and priority support, usually from around $400/month often with $0 install on eligible sites. For many SMBs it’s the sweet spot between business NBN and full private DIA. For most growing businesses that want fibre reliability without an enterprise budget, this is the option worth pricing first. What Affects the Cost of Dedicated Fibre? Five things move the price: What are the Installation Costs for Dedicated Fibre in Australia? This is where the surprises hide, so plan for it. Often $0 on eligible on-net sites (including many nbn Enterprise Ethernet upgrades), but off-net builds can cost thousands to tens of thousands as a one-off. The distance from existing fibre to your building is the deciding factor. Always get the install/build cost confirmed in the quote it’s the number most businesses forget to ask about. Is Dedicated Fibre worth it compared to NBN? It comes down to what an hour of downtime costs your business. Choose business NBN if you: Choose dedicated fibre (or Enterprise Ethernet) if you: A smart middle path many businesses take: business NBN with a static IP as a primary for smaller sites, and dedicated fibre for the head office or uptime-critical locations. How to choose a Dedicated Fibre Provider with Transparent Pricing? Request a written per-address quote that separates the monthly fee from the one-off install/build cost, and confirms whether your site is on-net or off-net. A transparent provider will explain the SLA, contract terms and any construction cost upfront rather than quoting a vague “from” price. If they won’t itemise the build cost, keep asking. Byteway Expert Insight When Melbourne businesses come to us comparing fibre quotes, the confusion is almost always the same: they’ve been quoted wildly different monthly prices and can’t work out why. The answer is nearly always the build. One provider quoted an on-net price assuming fibre was already in the building; another priced in a construction job nobody explained. Same “1Gbps dedicated fibre,” very different real cost. What we’ve learned is that the honest first step isn’t a price it’s a feasibility check on the actual address. Once we know whether a site is on-net, whether it qualifies for a $0 nbn Enterprise Ethernet upgrade, or whether it genuinely needs a private build, the right option is usually obvious. Plenty of businesses that think they need an expensive private circuit are actually well served by Enterprise Ethernet at a fraction of the





