The cheapest NBN plans available in Australia

For cheap NBN 25 plans, it's hard to beat Mate's Crikey nbn 25/10. You'll save $30 a month for your first 6 months, bringing the price down to $40. You can also bundle a mobile plan or additional internet plans to save another $10 a month. Plus, Mate offers a 1-month money back guarantee if you aren't satisfied with their service.

To see how Mate's plan compares to other NBN 25 plans, check out the daily updating table below.

Dodo also takes the November prize for the best NBN 50 deal with its nbn50 Unlimited plan. You'll pay $59.75 a month for the first 6 months, after which the price rises to $83.90 a month.

Alternatively, check out Mate's Ripper NBN 50/20 plan. It's slightly more expensive at $60 per month, but once the promotional pricing expires, the plan rises to $80 per month.

Take a look at the plans below to see how Mate and Kogan's cheap NBN 50 plans compare:

Mate takes the prize for cheapest NBN 100 plan this month, with the cheapest price for your first six months of an NBN 100 plan. You'll pay $60 per month for your first six months, and $90 per month thereafter. 

There are cheaper options to consider after your first six months are up. Below you'll find more of the cheapest NBN 100 plans so you can see how they stack up against Mate's discounted plan.

If you're looking to score a deal on NBN 250, Spintel has a great offer right now. You'll pay $78 per month for your first six months, and then $89.95 per month thereafter.

Even after the discount expires, $89.95 is a very competitive deal for an NBN 250 plan.

The catch here is that NBN 250 plans are only available to FTTP (Fibre-to-the-Premises) or HFC (Hybrid-Fibre Coaxial) premises, but all addresses with these technology types should be able to get these plans.

Spintel reports impressive evening speeds of 235 Mbps, with 22 Mbps upload speeds. To see how that compares, here's a shortlist of NBN 250 plans sorted by typical evening speeds.

Got the need for the highest possible NBN speeds? Then the Tangerine NBN Unlimited 1000 plan is currently the cheapest way to get them. This plan will cost you $84.90 per month for the first six months, which is cheaper than the promo pricing available from its biggest competitors. After that, the price rises to $104.90.

As with NBN 250, NBN 1000 plans are only available to residences with an FTTP or HFC connection. If that's you, then be sure to check out the widget below for the round-up of the other cheap NBN 1000 plans in the mix this month.

Australia's leading mobile provider charges a premium for its services and unlike the mobile market, there are fewer reasons to favour Telstra NBN over the competition.

Telstra's cheapest unlimited home internet plan currently clocks in at $89 per month. That comes with unlimited data and NBN Basic II speeds (25 Mbps average typical evening speeds) with no contract. Just note that you'll need to return your modem if you leave within your first two years (or pay a non-return fee).

Take a look at Telstra's other NBN plans below.

The cheapest NBN plan from Telstra's biggest competitor Optus is cheaper at $75 per month.  Just be aware that download speeds are limited to 25 Mbps.

The plan is contract-free, but you must supply your modem. It also offers the option to save money by bundling your subscription services through Optus' SubHub app.

If you're keen to keep costs down but don't mind paying a little more for faster NBN speeds, you can find Optus's other cheap NBN plans in the widget below.

It's no surprise that Vodafone offers NBN plans, but the provider's roster of internet options leaves something to be desired if you're not already a mobile customer. Its cheapest NBN 50 plan clocks in at $80 per month, but you can save $5 a month if you already have a Vodafone mobile plan.

That discount knocks the cost of this one down to $75 per month, which is pretty competitive when compared to both the Optus and Telstra options above.

The plan is also contract-free and comes with unlimited data plus a modem with 4G backup. For a sense of how it compares to the full roster of Vodafone NBN plans, check out the widget below.

One of the most important things to consider when looking for a cheap NBN plan is to work out which NBN speed tier you need. An NBN 12 plan's price might look appealing, but if you are a household of heavy internet users, you'll experience slow internet speeds that won't keep up with your needs.

Also, double-check whether the price you're getting is a promotional discounted price for new customers. If so, you'll need to check what the original price will revert to once the promotion is finished. If you're not in a contract - and most NBN plans aren't - you can easily find another cheaper plan to swap to.

​Still, when shopping for a budget broadband plan, there are a few things to keep an eye out for:

• Technology at your address: If you're looking for a faster plan, NBN 250 and 1000 are only available to select FTTP and HFC customers. Knowing what NBN technology you have available at your address is the first step to knowing what deals are available to you.
• Promo pricing: Though most telcos no longer offer contracts, they do offer limited-time promotional pricing (typically for the first six months of your plan). When shopping for the cheapest NBN plans, be sure to check what the monthly price will be after your first six months.
• BYO modem: Most smaller providers offer BYO modem broadband plans and won't necessarily supply a modem unless you specifically request it. You will also incur an outright fee for the modem on your first bill if you do choose to take a modem. If you do already have an NBN modem that you're happy with, be sure to let your provider know you would like to BYO.