Best NBN 25 plans

NBN 25 is the realistic minimum for fixed-line internet in Australia. 

Although NBN 12 may be the slowest speed tier available, it's best to think of it as only suitable for super-basic one-person households with minimal connectivity needs. In other words: an internet connection of last resort.

For everyone else, NBN 25 should be considered the slowest internet connection you can away with. NBN 25 plans can offer download speeds more than twice as fast as NBN 12 (25 Mbps vs 12 Mbps) and up to five times faster than NBN 12 upload speeds (5Mbps vs 1Mbps). Most of the time, NBN 25 delivers a whole lot more value for a little less each month than NBN 12 does.

With that said, let’s take a look at the best NBN 25 plans in Australia and what they have to offer in terms of speed, value and more.

If you’re committed to signing up for an NBN 25 plan, this is probably the one to go with. Priced at a competitive $57.90 per month, new customers can currently grab the Flip Unlimited Premium NBN 25 plan for just $39 per month for the first six months if they sign up before 24 June 2025. 

This NBN 25 plan comes with unlimited data, typical evening download speeds of 25Mbps and upload speeds of up to 8Mbps. Although it is relatively light on perks, it’s hard to look past the price here - which comes out ahead of the competition on both promo and ongoing pricing. 

If you’re still uncertain, it’s worth remembering that it does come with a 14-day satisfaction guarantee and there is no lock-in contract involved so you can sign up and then leave early if it isn’t the right fit for you.

Our database tracks the prices and speeds attached to NBN 25 plans from over 30 different providers. When it comes time to make our monthly pick for the best NBN 25 plans, we favor the plan with the lowest price, unlimited data, no contract and a minimum of 25Mbps for typical evening download speeds.

Our comparison of the best 25Mbps NBN plans also tended to focus on and highlight introductory deals because that's the easiest way to save money when choosing any NBN plan. The other reason we compare NBN plans this way rather than over a longer period of time is that the cost of NBN tends to change every July, which makes longer term predictions less reliable and useful.

For a snapshot of how our current pick for the best NBN 25 plans compares to the most popular NBN 25 plans in our database, check out the widget below.

If you’re looking to sign up for an NBN 25 plan instead of an NBN 50 one, chances are that the price involved is a big part of the draw.

At the time of writing, signing up for an NBN 25 plan typically starts at around $59 per month (without any discounts) with prices going as high as $83 per month depending on the provider. As usual though, that cheaper price usually comes with a catch. Most NBN 25 providers will give your first handful of months at a discount before bumping you up to the regular price. If you stick with the same provider for too long, you might end up paying for it. 

One of the reasons NBN 25 plans are so competitively priced is it’s where more NBN providers are competing. NBN 12 plans are offered by fewer providers these days; we only track a handful in our database. Conversely, we track more than 30 NBN 25 plans in our comparison engine. More plans equate to better inclusions and other perks, like a tendency for discounted initial promotional pricing.

More often than not, the difference between a cheap and premium NBN 25 plan comes down to upload speeds. For example, the iiNet NBN 25 plan only offers 4Mbps in typical upload speeds while Origin’s Everyday NBN 25 plan delivers 8.5Mbps in upload speeds.

Another thing to remember here is that some NBN 25 providers offer strictly BYO (Bring-Your-Own) modem plans, while others supply one for a once-off fee. If you opt for an NBN 25 plan that comes with a mode, you’ll typically pay for it up-front or over time. If you leave before your payment term is up, you’ll have to shell out for whatever amount remains.

As mentioned above, the Flip Unlimited Premium NBN 25 is currently the reigning champ when it comes to intro pricing. If you sign up before 24 June 2025, you’ll pay just $39 per month for the first six months. After that, you’ll revert to the usual price of $57.90 per month. 

That’s a pretty solid price to pay for an NBN 25 plan that comes with unlimited data, typical evening download speeds of 25Mbps and upload speeds of up to 8Mbps. There’s also a 14-day satisfaction guarantee and no lock-in contract involved, so you can sign up and then leave early if it isn’t the right fit for you.

For a sense of how this plan compares to other cheap NBN 25 plans, check out the widget below.

If the best NBN 25 plan to you is the one that lets you save the most money then the case for the Southern Phone NBN basic plan is pretty easy to make. Although the ongoing and discount pricing for this plan does end up slightly ahead of the Flip Unlimited Premium NBN 25 plan mentioned above, the average cost per month over the course of the first year does work in its favor.

This plan comes with unlimited data, typical download speeds of 25Mbps and upload speeds of 8Mbps. If you sign up before 5 August 2025, Southern Phone will knock $14 off the usual monthly price for the first twelve months. That means you’re paying $45 per month for the first year rather than the usual $59 per month.

Even if the discount isn’t as deep as some other providers, the fact that it sticks around does make it a solid option for those looking to set, forget and save over the long haul when it comes to their internet connection. For a sense of how this plan compares to other cheap NBN 25 plans, check out the widget below.

Paying for faster NBN speed tiers tends to boost download speed and may lead to faster upload speeds. Here’s a look at the main NBN speed tiers:

• NBN 12: max 12Mbps download, 1Mbps upload
• NBN 25: max 25Mbps download, 5Mbps upload
• NBN 50: max 50Mbps download, 20Mbps upload
• NBN 100: max 100Mbps download, 40Mbps upload (20Mbps is more common)
• NBN 250: max 250Mbps download, 25Mbps upload
• NBN 1000: max 1000Mbps download, 50Mbps upload

Compared to NBN 25, NBN 50 offers download speeds up to twice as fast and upload speeds up to four times faster. NBN 100 has up to four times the download speed of NBN 25 and upload speeds up to eight times faster. Note that NBN 250 and NBN 1000 plans are only available to Fibre-to-the-Premises (FTTP) and Hybrid Fibre Coaxial (HFC) homes. In practical terms, the main difference between NBN 25 and any faster NBN plan is how long it takes to download and upload files.

The table below shows how long it’d take to download and upload a 10GB file with max download/upload speeds on the main NBN speed tiers.