How Much Is Telstra Really Costing Your Small Business? A Line-by-Line Breakdown

Most small businesses on a traditional Telstra setup have never sat down and added up what they actually pay for phone services each month. The charges are spread across multiple invoices, some are bundled into plans, and others are quietly added as "standard fees." When you do the maths, the total is often a surprise, and not a pleasant one. This guide adds it all up, line by line, then shows what the same capability costs on a modern cloud phone system.

About the figures on this page. Telstra publishes business-voice pricing in Critical Information Summaries per product rather than on a single price list, so the per-line and per-service amounts below are indicative bands drawn from published CIS documents and typical small-business invoices, checked as at 6 September 2026. They are here to show you the shape of a bill and what to look for on your own. They are not a quote. The three Telstra products we track directly are BusinessLine Part at $55 per line per month and Adaptive Collaboration Basic Calling at $19.80 per line per month, both currently sold, and Ultimate Business Voice at $50 per line per month, closed to new sales since 30 September 2025. Check every figure against your own invoice or the CIS for the product you are actually on.

The Main Telstra Business Phone Products: What Each One Is

Telstra has had several different business phone products over the years, and the naming has changed multiple times. Understanding which product your business is on matters because the pricing structures differ significantly:

Figures above assume a standard plan with Australian calls included, as at August 2026; check current provider pricing for the exact rate.

If you are not sure which product your business is on, check your Telstra invoice. The product name appears in the service description column. SmartLine Express is sold separately and at a higher price point.

A Typical Telstra Business Phone Setup for a Five-Person Office

Let's use a realistic small business scenario: a five-person office, one main business number, one 1300 number for customers, a basic call plan, and handsets leased through Telstra. This is a common configuration for a small professional services firm, trade business, or retail operation.

All prices below are in Australian dollars including GST. These are indicative figures based on publicly available Telstra business plan information and are meant to illustrate the structure of costs, not to quote live pricing (which changes regularly).

The Line-by-Line Breakdown

The Total: What You're Really Paying

Adding the fixed items only (excluding variable 1300 call costs and contract exit risk):

• Line rental x5: $275-$375/month
• Do not add a separate shared call-plan charge unless it appears in the applicable Telstra plan terms or on the business's invoice.
• 1300-number charges depend on the inbound-service agreement; use the actual access, connection and feature charges shown on the invoice or applicable terms.
• Use the actual equipment rental, repayment or purchase charge in the customer's agreement; handset costs are not a standard fixed amount across Telstra products.
• Connection fee (amortised): $10-$20/month
• Paper billing: $2-$5/month

This total cannot be treated as representative without identifying the actual Telstra products, call inclusions, inbound service and equipment agreement.
That's $4,764-$7,260 per year, before 1300 inbound call charges.

Contract length varies by Telstra product and equipment agreement; project costs over the actual term shown in the customer's contract.

The Same Setup on a Modern Cloud Phone System

Now let's look at the equivalent capability on a cloud-based business phone system. Same five users, same main business number, same 1300 number, same call volume.

The Comparison: Side by Side

That Telstra column models a legacy line-based setup, not Telstra's cheapest current option, so read the savings as applying to that configuration rather than to Telstra as a whole. Telstra currently sells Cloud Calling for Business at $19.80 per line per month on terms as short as one month, as the product table earlier on this page shows. Once you have a clear picture of what your own Telstra setup is costing you, the natural next step is comparing what a modern cloud phone system would cost instead. See Best VOIP Phone System for Small Business Australia for a current comparison of the available options.

For a direct cost and feature comparison between a Telstra business line and a VOIP alternative, see VOIP vs Traditional Phone Australia.

What You Gain by Switching (That Telstra Charges Extra For)

The cost comparison above only tells part of the story. The other part is what you get, and what Telstra charges extra for, if it's available at all on a standard business plan.

Ring groups (hunt groups), if your main number isn't answered within three rings, the call automatically rings the next available person. Included in most cloud systems. On a traditional Telstra setup, this requires additional configuration and often additional lines.

IVR / auto-attendant, "Press 1 for sales, 2 for support, 3 for accounts." This requires an additional Telstra service in most configurations. On some cloud systems, an auto-attendant is available and can be configured through an administrator portal; availability, licensing and setup time vary.

After-hours routing, sending calls to voicemail after 5pm, or playing a different greeting on weekends, is available on many cloud phone systems, subject to the provider and plan. On a traditional setup it often isn't configured at all,

Voicemail to email, receiving a voice message as an audio file in your inbox is available on many cloud systems, depending on the provider and plan. On traditional setups it's either not available or requires a premium add-on.

Mobile app / softphone, staff can take calls on their smartphones under the business number, without giving out personal mobile numbers. Included in most cloud plans. Not available on traditional landline setups.

Call recording, useful for quality assurance, compliance, and training. Available as an add-on or standard feature on cloud systems. Rarely included in traditional setups at small-business prices.

Call reporting, how many calls came in today? How long did they wait? How many went unanswered? Cloud phone systems can provide call logs and reporting, but the available metrics depend on the platform, plan and licensed features. A traditional Telstra setup has limited or no call reporting at the SMB tier.

For a deeper look at what these features mean in practice and how to evaluate them, see our VoIP cost guide and our hidden costs of VoIP article.

The Hidden Cost Nobody Mentions: The Contract

Contract and exit terms vary by product. Some Telstra services are month-to-month; Telstra Business SIP applies 30% of remaining minimum monthly charges plus outstanding hardware repayments.

Cloud-phone contract terms vary by provider, with month-to-month and multi-year options both available. The flexibility difference is significant for a small business that may need to scale up, downsize, or change direction quickly.

Under Australian Consumer Law, there are minimum rights around unfair contract terms in small business contracts. If your Telstra contract was signed before you fully understood the exit fee structure, it's worth reading the terms carefully. The Australian Competition and Consumer Commission (ACCC) has information on small business contract protections at accc.gov.au.

The Hidden Costs Not Shown on the Standard Price List

The figures on Telstra's published price list are the base costs. These additional charges appear on the invoice but are rarely discussed upfront:

Setup and installation fees: New Telstra business phone setups typically include a one-time installation fee of $100-$300 per site, depending on whether a technician visit is required. Equipment activation charges may apply on top of this.

Handset leasing: Telstra equipment may be purchased outright, financed or rented depending on the product and agreement. Return obligations apply to rental equipment, not universally to every handset arrangement. Businesses that lease handsets and then switch providers often face equipment return complications or penalties for unreturned equipment.

Excess call charges: "Unlimited" call plans have fair-use policies. Unlimited call inclusions remain subject to the applicable plan exclusions and FairPlay policy; check the specific Critical Information Summary rather than assuming a universal minute cap. Calls above this threshold, or calls to international numbers, satellite phones, premium numbers, are charged at per-minute rates that can be significantly higher than the base plan implies. Check your invoice for "additional call charges" or "excess usage" line items.

Directory listing fees: Maintaining a listing in the White Pages (now at whitepages.com.au) or Telstra states there is no additional charge for its unlisted service option; paid White Pages business listings are separate products. Many businesses pay this without reviewing whether the listing has any value.

Paper invoice fee: Telstra charges $2.20/month for receiving a paper invoice rather than electronic billing. Small amount, but worth noting if you have multiple lines.

What Most Businesses Get Wrong

Mistake 1: Comparing the plan price, not the total cost. A Telstra plan that's advertised as "$89/month" might actually cost $500/month once line rental, 1300 access, handset rental, and call charges are added. Always calculate the total cost, including every line item on the invoice.

Mistake 2: Assuming switching is complicated or risky. Number porting in Australia is a regulated process. Local-number porting is regulated, but timing is expressed as performance targets rather than a guarantee. Cat A targets are 80% within 8 business days, 90% within 10 and 98% within 15; Cat C targets are 80% within 15, 90% within 20 and 99% within 30, subject to exclusions. Service continuity should be planned with the gaining provider. See our number porting guide for a step-by-step walkthrough.

Mistake 3: Renewing without reviewing. Many businesses reach the end of a contract period, get a renewal offer, and sign again without comparing alternatives. The renewal is convenient and feels low-risk. But the market has changed significantly in the past three years, and the cost difference is now substantial enough that it's always worth doing the comparison before renewing.

Your Next Steps

• Pull your last three Telstra invoices and add up every line item. The total is your current baseline.
• Note your contract end date. If you're within 3 months of the end, now is the time to act. If you're mid-contract, calculate the exit fee and factor it into the comparison.
• Use the VoIP Cost Calculator to estimate what the equivalent capability costs on a cloud system.
• Check your internet connection with the VoIP Bandwidth Calculator to confirm your NBN plan can handle business VoIP calls.
• Work out what you need with the Phone System Sizing Wizard, lines, extensions, features.
• Get a recommendation, once you know your numbers, we can match you to the right provider for your size, budget, and call pattern.

For more on the full cost picture of switching to VoIP, including the costs people don't usually mention, read our phone system total cost of ownership guide.

If your Telstra business phone bill contains line items you have never fully understood, our Phone Bill Translator converts each charge into plain language and shows what a comparable modern VoIP service would cost instead.

Can I keep my Telstra business number if I switch to a different provider?

Yes. Phone number portability is regulated in Australia by ACMA. You do not own the number as property, but you hold rights of use and can generally port an active local number when the gaining provider agrees to supply the service and follows the applicable portability process. The registered Code sets percentile-based targets: Cat A ports are targeted at 80% within 8 business days, 90% within 10 and 98% within 15; Cat C ports at 80% within 15, 90% within 20 and 99% within 30, subject to conditions and exclusions. Keep the existing number active and do not disconnect it before the port. Porting procedures aim to support continuity, but a gap-free cutover is not guaranteed.

What happens if I'm still in a Telstra contract?

Check the product-specific contract: the formula may be a percentage of remaining service charges, outstanding hardware repayments, or no service-level early termination fee. Compare that exit fee against the total savings you'd achieve by switching now rather than waiting. Whether early exit is financially worthwhile depends on the actual exit charge, outstanding equipment costs and verified savings under the replacement plan. It depends on your specific contract terms and how far through the term you are.

Are 1300 numbers more expensive on traditional phone systems?

1300-number access and inbound rates vary by provider, call origin and answer point. Compare the actual Telstra and proposed-provider rate schedules rather than assuming one technology is always cheaper. If your business receives a high volume of 1300 inbound calls, this cost difference alone can be significant.

Do cloud phone systems require different handsets?

Cloud VoIP commonly uses compatible IP phones, but some services also support Wi-Fi phones or existing analogue handsets through a compatible analogue telephone adapter. These are different from the phones that plug into the back of a Telstra socket. However, many businesses start with the smartphone app (which is usually included) and add desk phones later. If you're replacing existing handsets anyway, the cost is one-time rather than ongoing rental.

Is VoIP call quality as good as a Telstra landline?

VoIP can provide good call quality on a suitable connection, but quality depends on end-to-end connectivity, congestion, network configuration, equipment and the provider's service. The variables are your internet connection speed, consistency, and the business phone company's network quality. On a poor or congested connection (particularly some FTTN NBN services with variable upload), call quality can suffer. Our Bandwidth Calculator can tell you whether your connection is suitable before you commit to anything.

Does switching mean I have to change my internet plan too?

No. Many cloud VoIP services can run over an existing compatible NBN connection, but internet-provider, bundling, compatibility and network-configuration requirements vary by phone provider.