How much does custom software cost in Australia? (2026 guide)

What does custom software cost in Australia in 2026?

Most custom software projects built by Australian teams land between $15,000 and $500,000 (AUD, ex GST), and the band you fall into is set by complexity, not by the type of business. That holds whether you call it custom, bespoke or tailored software: the price of building it depends on what it has to connect to and who has to use it. Published 2026 guides from Australian agencies agree closely on the lower two bands and diverge at the top, because “enterprise” covers everything from a multi-tenant portal to a core banking replacement.

Project band	Typical examples	Typical range (AUD, ex GST)	Typical timeline
Simple internal tool	Scheduling, inventory tracker, approvals workflow, a basic CRM for one team	$15,000 to $40,000	4 to 8 weeks
Mid-complexity system	Customer portal, booking system with payments, job management, quoting and invoicing	$40,000 to $150,000	8 to 16 weeks
Multi-system platform	Multi-tenant SaaS, marketplace, industry-specific operations platform with several integrations	$150,000 to $500,000	4 to 12 months
Enterprise or regulated core system	Systems replacing an ERP module, fintech or health platforms with audit and security review	$500,000 to $1 million+	9 months+

These bands combine Expeed’s 2026 guide ($15k to $40k, $40k to $150k, $150k to $500k+), Conduct’s complexity bands (up to $60k, up to $90k, $250k and beyond) and VT Digital’s enterprise figure ($120k to $500k+). Conduct also quotes fintech at $150k to $600k and healthcare from $25k to over $1 million, which shows how wide the regulated end gets.

The ranges are market ranges, not quotes. A specific project gets a specific number only after someone has looked at the workflows, the integrations and the data.

Why do Australian quotes differ so much?

A software price is hours multiplied by rate, and vendors disagree far more about the hours than the rate. Australian agency rates sit in a fairly tight band. The number of hours depends on how each vendor reads your scope and how much risk they build in.

On rate, Expeed puts Australian developers at $100 to $250 an hour and VT Digital at $120 to $200. Conduct reports small and mid-sized agencies at $123 to $330 an hour and large firms at $330 to $495, with enterprise consultancies higher again. Our software developer rates guide breaks this down by role and engagement type, including what an in-house hire actually costs once super and on-costs are added.

On hours, three quotes for the same brief can easily range from 400 to 1,500 hours. The gap usually comes from:

• Unstated assumptions. One vendor includes automated tests, deployment pipelines and documentation; another treats them as extras.
• Integration depth. “Connects to Xero” can mean a one-way invoice push or a two-way sync with error handling and reconciliation.
• Risk padding. An unclear brief attracts contingency. A vendor quoting fixed price on a vague scope will either pad heavily or plan to charge variations.
• Team shape. A senior-only team bills more per hour but often needs fewer hours and less rework.

What drives the cost up or down?

The biggest cost drivers are integrations, data, permissions and assurance. Screen count matters less than most buyers expect: a screen that reads from one table is cheap, while a screen that reconciles three systems is not.

Driver	Lower cost	Higher cost	Typical effect on hours
Integrations	None, or one well-documented API	Several systems, legacy or undocumented APIs, two-way sync	Each serious integration can add 40 to 200 hours
Data migration	Starting fresh	Years of records from spreadsheets or an old database, needing cleansing	Often underestimated; can rival a feature module
Users and roles	One internal role	Staff, customers, partners and admins with different permissions	Adds design, testing and security work to every feature
Platforms	Web app only	Web plus iOS and Android, offline mode	Mobile adds a second front end; see the app cost guide
Security and compliance	Internal tool, low-sensitivity data	Personal or financial data, penetration testing, audit logs, APRA or health obligations	Adds review cycles and evidence, not just code
Design	Standard component library	Bespoke brand design system and user research	Custom design can add 10 to 20%
Decision speed	One empowered product owner	Committee sign-off, slow access to systems and data	Idle time and rework are billed too

Conduct’s phase split is a useful sanity check on any quote: roughly 10% requirements and UX, 5 to 10% architecture and UI design, 25% front end, 40% back end and 15 to 20% testing. If a quote shows almost nothing for testing, the testing cost has not disappeared. It will turn up later as bugs.

A worked example: pricing a customer portal

Here is how a mid-complexity project turns into a number, using illustrative figures inside the published ranges. The project: a portal where a services company’s customers log in, see job status, approve quotes and pay invoices, with a sync to the company’s accounting system.

1. Estimate the build hours by feature. Authentication and user management 60 hours; job status views 90; quote approval workflow 80; invoice payments through a payment provider 70; accounting system sync 110; admin screens 90; automated testing and QA 110; deployment pipeline and environments 40; project management and design 75. Total: 725 hours.
2. Apply a blended rate. A team mixing a senior engineer, a lead and part-time design and QA at a blended $165 an hour: 725 × $165 = $119,625. (That is about $1,250 a day, below the $1,400 senior-team day rate used in our other cost guides, because the part-time design and QA hours bring the blend down.)
3. Add discovery. Two to three weeks of paid discovery before the fixed price: $12,000.
4. Total project cost: $119,625 + $12,000 = $131,625 ex GST.
5. Add GST. $131,625 × 1.1 = $144,787.50 including GST (claimable as an input tax credit if you’re registered).

Then the ongoing costs for the first year after launch:

Ongoing item	Assumption	Annual cost (AUD, ex GST)
Maintenance and minor changes	15% of the $119,625 build	$17,944
Cloud hosting, database, backups	$350 a month	$4,200
Third-party services (email, monitoring, error tracking)	$150 a month	$1,800
Payment processing	A percentage plus a fixed fee per transaction, set by the provider; check its current pricing page	Variable, usually passed through
Total fixed ongoing		$23,944

Over three years, the portal costs roughly $131,625 + (3 × $23,944) = $203,457 ex GST before any new features. That three-year figure is the right one to compare against a SaaS subscription, which our build vs buy guide walks through.

What are the hidden costs of custom software?

The hidden costs are the ones a quote usually leaves out: most quotes cover design, build, testing and launch, and skip the costs that start after launch or sit outside the vendor’s control. Check every quote for these:

• GST. Business quotes are normally ex GST. Add 10%.
• Hosting and cloud services. Expeed puts typical monthly hosting at $30 to $100 for basic, $100 to $500 for cloud and $500 to $2,000+ for enterprise setups.
• Licences and subscriptions. Maps, email delivery, SMS (often 5 to 10 cents per message), identity providers, monitoring and any paid APIs.
• Maintenance and support. Security patches, dependency updates, operating system changes and bug fixes after the warranty period. The widely quoted benchmark is 15 to 20% of the build cost per year; our maintenance cost guide covers what that buys.
• Penetration testing by an independent tester, if your data or customers require it.
• Your own team’s time for workshops, testing, data cleansing and change management. This is real cost even if it never appears on an invoice.
• App store fees, if the project includes mobile apps.

Onshore or offshore: does it change the total?

Offshore rates are much lower per hour, but the total gap is smaller than the rate gap once coordination, rework and time zone overhead are counted. Accelerance’s 2026 survey puts senior developers in Asia at about USD $31 to $41 an hour and in Central and Eastern Europe at USD $64 to $76, against the $120 to $250 AUD range for Australian agencies.

Offshore delivery works well for well-specified work with a strong local product owner. It tends to cost more than expected when requirements are still moving, when the work needs daily access to Australian stakeholders, or when data must stay onshore for privacy or contractual reasons. Our onshore vs offshore comparison sets out when each is the better choice.

Is custom software worth the cost?

Custom software is worth the cost when it supports a workflow that sets your business apart, or when the subscriptions and workarounds it replaces cost more over three years than building and running it. It is usually not worth it for common needs like accounting, payroll or email marketing, where mature SaaS products already fit.

The honest comparison is total cost over three to five years, not build price against a monthly fee. The portal above costs about $203,457 ex GST over three years. If the alternative is a SaaS platform plus manual work that adds up to more than that, or the SaaS product cannot handle the workflow at all, building wins. If an off-the-shelf tool covers most of the need and the gap is tolerable, buying usually wins. The same logic applies to a custom ERP build: replacing an ERP module sits in the enterprise band above, and our enterprise software development cost guide covers when that makes sense.

Three signs the numbers favour building: staff re-keying data between systems every day, per-seat licence costs growing faster than revenue, and a process competitors cannot copy because it is how you win work.

How can you reduce the cost without cutting corners?

Reduce the hours, not the quality: narrow the first release, remove unknowns early and reuse proven components.

1. Pay for discovery. VT Digital quotes $15k to $25k for enterprise discovery; smaller projects need less. A clear scope removes the contingency vendors add to vague briefs. Discovery produces the workflows, integrations list and acceptance criteria a fixed price depends on.
2. Ship one workflow first. Build the workflow that pays for the system, then extend. The MVP cost guide covers how to cut scope sensibly.
3. Buy the commodity parts. Use managed authentication, payments and email rather than building them.
4. Sort out integration access early. API credentials, test environments and a named contact at each vendor save weeks.
5. Clean your data before migration. Deduplicating and fixing records in-house is cheaper than paying engineers to do it.
6. Keep one decision-maker. A single empowered product owner prevents rework.
7. Check the R&D Tax Incentive. If the project involves genuine technical uncertainty, some costs may be eligible. Eligibility is narrow and needs advice from a registered R&D tax agent; our R&D Tax Incentive cost guide explains how it works.

What not to cut: automated testing, code review, security basics and documentation. Skipping them lowers the quote and raises the three-year cost.

How All Webbed Labs prices custom software

We run a paid discovery first, then quote a fixed price for the agreed scope, so the number you approve is the number you pay unless you change the scope. Our teams are senior engineers only, working in AEST hours, and your code lives in your own repository from day one, with IP transferring on completion. Our internal delivery pipeline runs several AI coding agents in parallel, and every change passes type checks, visual tests and security scans and a senior engineer’s review before it ships. That speeds up routine work, while the judgement calls stay with people. See our custom software development service.