Telecommunications Blog

July 7, 2026

1300 and 1800 numbers in Australia: Costs, calling from mobiles and when to use each

Choosing between a 1300 or 1800 number is a simple way to improve how customers reach you, support national marketing, and keep control of costs. The trick is matching the number to your goal, then pairing it with smart routing so callers get through the first time.
This guide answers the questions businesses in Victoria ask most often. You will learn what each number means in Australia, how mobile-call charges work across carriers, and how to choose the right setup for sales lines, after-hours support, and seasonal campaigns. We also cover compliance, customer disclosures, and how to connect your number to VoIP so you reduce missed calls.

If you want to move quickly, you can provision a number, map routing, and go live with voicemail-to-email in days with the right Phones and Internet partner.

What 1300 and 1800 actually mean in Australia

  • Both 1300 and 1800 numbers are non-geographic. They are not tied to a suburb or state and can route calls anywhere in Australia.
  • 1800 numbers are toll-free for most Australian callers. The business pays for the inbound call under its plan.
  • 1300 numbers offer a local-rate experience for callers. The caller usually pays a standard call charge based on their plan, and the business also pays an inbound component.

For businesses across Cranbourne, Carrum Downs, Hallam, Dandenong, and wider Victoria, non-geographic numbers support a single national brand while letting you direct calls to one or many answer points.

Are 1800 calls free from mobiles? What about 1300 charges?

In Australia, 1800 calls are generally free from most mobile and fixed-line services. The business pays. That said, mobile carriers and plans can differ on inclusions. Some low-cost or legacy mobile plans may exclude 1800 from “included calls” and charge per minute. Always check your mobile plan’s inclusions, especially for staff who call suppliers and support lines often.

1300 numbers are not toll-free. For the caller:

  • From a fixed line, 1300 is typically charged at a local-rate experience set by the carrier.
  • From a mobile, charges depend on the mobile plan. Many plans include standard national calls, which often cover 1300 and 13 numbers, but not all plans do. Prepaid, budget, or legacy plans may bill per minute or per call.

For the business that owns the number, inbound costs apply on both 1300 and 1800 services, with rates and inclusions depending on your provider and usage profile. If your audience skews heavily to mobile callers, 1800 often removes friction because callers expect toll-free access from mobiles.

Tip for teams: if your staff need to dial suppliers on special numbers, make sure your business mobile phone plan includes 13, 1300, and 1800 calls. If you are reviewing plans, you can compare inclusions or speak with a local provider. DSP can help businesses assess options for a Cranbourne mobile phone plan that fits real call patterns.

How to call an 1800 number from a mobile

Dial it as you see it, starting with 1800, then the remaining digits. There is no prefix required inside Australia. If you are overseas, most 1800 and 1300 numbers will not work; use the business’s geographic number instead.

If you are on a plan that charges for 1800, check your plan inclusions or call your provider. The same advice applies if you are asking, how do I contact a toll-free number using a mobile; simply dial 1800 followed by the number within Australia, then check your mobile plan if you are unsure about charges.

Decision guide: when to choose 1300 vs 1800

Use this as a quick selection framework. If two options apply, weigh caller experience against inbound cost.
  • Nationwide marketing and brand reach
    • Choose 1300 for general enquiries where callers are likely to dial from mixed devices and cost to caller is not a blocker.
    • Choose 1800 when you want zero-cost-to-caller signals, such as new-customer acquisition or high-intent sales.
  • Sales lines and promotions
    • 1800 reduces friction and improves response rates, especially from mobile-heavy audiences.
    • Track results by using dedicated numbers per campaign.
  • Support lines and clinics
    • If you serve vulnerable callers or want to remove price concerns, 1800 is caller-friendly.
    • For general appointment lines where callers expect standard call charges, 1300 is common.
  • Schools and community services
    • Consider 1300 for office hours and general queries.
    • Consider 1800 for after-hours emergencies or critical alerts.
  • Seasonal or after-hours overflow
    • Either number can work. The routing design matters more. Use time-of-day routing, on-call mobiles, and voicemail-to-email so nothing is missed.
Are local numbers toll-free? No. Geographic numbers use standard local and national rates set by each carrier or plan.

Cost control for businesses: practical tips

  • Match the number to your goal. Use 1800 for frictionless sales or support, and 1300 for general inbound where caller-paid charges are acceptable.
  • Monitor mobile-caller impact. If your audience is mostly on mobile, 1800 can lift call volume and reduce abandonment.
  • Use spend alerts. Ask your provider for inbound spend alerts and thresholds so you can react early.
  • Optimise routing. Route by time of day, location, or queue status. Overflow to mobiles during peaks, then send overflow to voicemail-to-email with clear prompts.
  • Keep recordings lean. Record where needed, retain for an appropriate period, and archive or delete per policy to control storage costs.
  • Review plans annually. As you approach busy periods in Victoria, review routing, greetings, and capacity.

Implementation: pair numbers with VoIP and intelligent routing

Your number choice is only half the story. Combine it with VoIP to control flows and answer rates:

  • Time-of-day routing for business hours, after-hours, and holidays.
  • Overflow-to-mobiles to protect answer rates during peaks or staff absences.
  • Hunt groups and queueing to share load across team members.
  • Voicemail-to-email with clear prompts and a monitored inbox.
  • Menu options for urgent vs routine requests, so critical calls get priority.

If you already use SIP trunks or a cloud phone system, DSP can route your 1300 or 1800 to your PBX, softphones, and mobiles, then add reporting to show answer rates and wait times. For teams comparing options in the southeast, you can explore local expertise in VoIP systems in Cranbourne or request a tailored SIP assessment from a SIP trunk provider in Carrum Downs.

Compliance and caller experience

  • Disclose costs. In marketing material, state “Calls to 1800 are toll-free from most Australian numbers. Check your mobile plan inclusions.” For 1300, note “Standard call charges apply per your plan.”
  • Call recording consent. If you record calls, play a clear consent message before the call proceeds. Offer an alternative channel if required.
  • After-hours clarity. State your after-hours process on greetings and websites. Offer a path for urgent matters.
  • Accessibility. Keep IVR menus short. Offer a human option for vulnerable callers.

Quick scenarios and recommended setups

  • New-customer sales blitz
    • Number: 1800
    • Routing: Sales hunt group, overflow to mobiles, voicemail-to-email outside hours
    • Extras: Short queue, call-back option
  • General enquiries for a growing business
    • Number: 1300
    • Routing: Reception hunt group, time-of-day routing, simple IVR for departments
  • After-hours emergency line for clinics or schools
    • Number: 1800
    • Routing: On-call rota to mobiles, recorded consent if calls are captured, priority tag in voicemail-to-email
  • Seasonal promotion or pop-up service
    • Number: Dedicated 1300 or 1800 per campaign
    • Routing: Campaign-specific greeting, weekday queue, weekend overflow to mobiles, reporting enabled

FAQs

  • What is the difference between a 1300 number and an 1800 number?
    • 1300 provides a local-rate experience for callers. 1800 is toll-free for most Australian callers, with the business paying inbound costs.
  • Is an 1800 number free from a mobile? Are all 1800 numbers free in Australia?
    • Generally, yes for Australian mobiles and landlines, but some mobile plans may exclude 1800 from included calls. Check your plan.
  • Is there a charge for 1300 numbers?
    • For callers, charges depend on the plan. Many mobile plans include 1300 in standard national calls, but not all. For the business, inbound charges apply.
  • How do I call an 1800 number from my mobile? How do I contact a toll-free number using a mobile?
    • Dial 1800 plus the number directly within Australia. No prefix required. Check your mobile plan for inclusions.
  • Are local numbers toll-free?
    • No. Local geographic numbers attract standard call charges per your plan.
  • How to get a 1300 number for business? Why do businesses use 1300 numbers?
    • Contact a Phones and Internet provider to provision the number, set routing, and connect it to your VoIP or PBX. Businesses use 1300 to present a single national number, manage routing centrally, and track campaigns.

Next steps

If you want a simple, reliable setup before your next busy period, DSP can provision 1300 and 1800 numbers, design routing, and connect them to your VoIP. We can also enable voicemail-to-email and spend alerts, then review costs and mobile-caller experience so you start strong. For local guidance, explore our 1800 number options for Carrum Downs or speak with our team about VoIP solutions in Cranbourne and intelligent call routing. You can also review business mobile inclusions if staff frequently dial special numbers on the go.

Contact sales@dspcommunications.com.au to discuss your number choice, routing design, and go-live plan.

DSP Communications is a full service business telecommunication company in Cranbourne/Mornington Peninsula