How to start a welding business in Australia comes down to six moves: pick your niche, choose a business structure, register your ABN and business name, check whether your work needs a state building licence, get insured before your first hot job, and put written terms in front of every customer. Do those six well and you’ll avoid the mistakes that sink most new welding shops in year one.
Here’s the honest bit. Most welders are brilliant on the tools and allergic to paperwork. That’s fine until a customer stops answering the phone with a big invoice still open, or a builder asks for your insurance certificate and you don’t have one. This guide is the paperwork side, minus the overwhelm.
- Welding on its own isn’t a licensed trade in most states. The licence is triggered by the work: residential building work over $5,000 (incl GST) in NSW, or building work over $3,300 in Queensland.
- The fume limit is now 1 mg/m³. From 1 December 2026, workplace exposure standards become workplace exposure limits (WEL), so check your extraction setup now.
- You need an ABN before you invoice. GST registration kicks in once turnover hits $75,000.
- Get public liability cover before your first job. Don’t assume a builder’s policy covers your hot work on their site.
- Quotes accepted by text aren’t enough. Written terms with deposits and payment dates are the single biggest fix for unpaid invoices.
Which type of welding business should you start?
A welding business fabricates, repairs or modifies metal for other people. That covers a lot of ground. Your model decides your customers, your costs and, most importantly, your licensing and insurance risk. So pick it first.
Most founders assume they’ll “do a bit of everything”. In practice, the welders who get traction fastest pick one lane and get known for it. You can add services later.
| Welding business idea | Typical customers | Setup | Licence and risk level |
|---|---|---|---|
| Mobile repairs | Farmers, trailer and ute owners, small manufacturers | Van or trailer rig, generator | Lower, unless you work on homes |
| Workshop fabrication | Builders, landscapers, homeowners (gates, frames, trailers) | Industrial or light industrial premises | Moderate; zoning and fume extraction matter |
| Structural and site welding | Builders, head contractors, mines | Mobile rig plus site inductions | Higher; building licences, AS/NZS 1554 and site paperwork |
| Specialist (pipe, stainless, aluminium) | Food, water, engineering firms | TIG gear, coded welders | Higher; consider professional indemnity |
| Labour supply | Other fabrication shops needing overflow welders | Minimal gear, strong paperwork | Contract-heavy; labour hire rules may apply |
Want the quick version of how to start a welding business from scratch? Watch this first, then come back for the legal detail.
What does it cost to start a welding business?
The honest answer: it depends on your model. A mobile repair rig and a full workshop are different planets. But the cost categories are the same for everyone.
- Machines and gear: MIG, TIG or stick welders, plasma cutter, grinders, clamps, benches and PPE.
- Consumables: wire, rods, shielding gas and cylinder rental, discs.
- Vehicle or premises: a ute or van fit-out for mobile work, or rent, power and fume extraction for a shop.
- Setup admin: registrations, insurance premiums, licence fees and your core contracts.
Then work out your charge-out rate before you quote anyone. Here’s a simple worked example (the numbers are illustrative, so plug in your own). Say your yearly running costs are $40,000 and you want to pay yourself $90,000. That’s $130,000 to cover. If you can realistically bill 1,300 hours a year once travel, quoting and admin are taken out, your floor rate is $100 an hour before any profit margin.
The mistake we see most? Pricing off what the welder down the road charges, then discovering half the week disappears into driving and quoting. Bill for real hours, not ideal ones.
Where should you set up? You can run a welding business from home, but check council zoning first. Noise, fumes and gas storage in a residential garage can attract complaints fast. A workshop lease also needs to permit hot work, so read the permitted-use clause before you sign.
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How do you write a small welding business plan?
Keep it short. A small welding business plan only needs to answer five questions, and one page is plenty to start:
- Who pays you? Name your three most likely customer types.
- What exactly do you sell, and what won’t you do?
- What’s your charge-out rate, and how will you get paid (deposits, progress claims, completion)?
- What do you need to buy before job one, and how will you fund it?
- What could go wrong (injury, defect claim, bad debt), and what covers it?
Question five is the one people skip. It’s also the one a bank, a builder or a lawyer will ask you about first. If you’d rather start from a structure, our business plan template walks you through each section.
Which business structure should a welding business use?
Welding is high-risk work. That makes structure more than a tax question.
| Structure | Best for | Watch out for |
|---|---|---|
| Sole trader | Solo mobile repairs, testing demand | You’re personally liable for business debts and claims |
| Partnership | Two welders splitting work and profit | Each partner can be liable for the other’s decisions; get it in writing |
| Company (Pty Ltd) | Site work, employees, bigger contracts | More admin, annual ASIC fees, and every director needs a director ID |
Our view: if you’re a one-person repair operation, a sole trader setup is fine to start. Once you’re welding on construction sites, hiring staff or signing head contractor terms, a company is usually worth the extra admin. Builders and procurement teams also tend to take a Pty Ltd more seriously.
One trap to avoid: bolting a new, riskier welding venture onto a company you already run for something else. If one side of the business gets sued, the assets of both are exposed. Lawpath accountants regularly walk clients through whether a separate entity is worth the extra cost.
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What do you need to register before your first job?
- An ABN. You need one to invoice and claim GST credits. Register your ABN before you quote your first paying customer.
- A business name, unless you trade under your own name. Check and register your business name before you pay for signage or a vehicle wrap.
- GST, once your turnover reaches $75,000 a year (you can register earlier).
- A company and ACN, if you’ve chosen that structure. You can register a company online in one sitting.
- PAYG withholding and super, before your first employee starts.
A common misunderstanding: registering a business name doesn’t stop anyone else using it. Only a trade mark gives you exclusive rights to a brand. If you plan to put real money into your name and logo, register a trade mark early.
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What licence do I need to start a welding business?
This is where a lot of online advice gets it wrong. In most of Australia, welding isn’t a licensed trade in its own right. What triggers a licence is the type of work you do, who it’s for, and how much it’s worth.
Fixing a farmer’s trailer? Usually no building licence needed. Installing balustrades on someone’s deck, or erecting a steel carport? That’s building work, and the rules change.
| State | When a licence kicks in | Who regulates it |
|---|---|---|
| NSW | Contracting or advertising residential building work over $5,000 (incl GST) in labour and materials | NSW Fair Trading |
| QLD | Building work over $3,300; separate structural and non-structural metal fabrication licence classes | QBCC |
| VIC, WA, SA, TAS, ACT, NT | Varies by type and value of building work; check before quoting on homes or structures | Your state or territory building regulator |
In NSW, a contractor licence covers contracting and advertising, while a qualified supervisor certificate covers supervising and doing the work. You can check NSW home building licence requirements with Fair Trading. Queensland is stricter on value, so read the QBCC licence rules before your first residential job there.
Why does this matter so much? Unlicensed work can mean fines and, worse, trouble enforcing payment for the job. Getting this wrong is one of the few mistakes that can cost you the whole invoice.
Qualifications and tickets clients ask for
The trade qualification is the Certificate III in Engineering (Fabrication Trade), now MEM31922. Beyond that, builders and engineers often ask for:
- Welder qualification to AS/NZS ISO 9606 (often called being “coded” or “tested”).
- Experience welding to AS/NZS 1554 for structural steel.
- High risk work licences if you operate EWPs, cranes or do dogging and rigging.
- Site tickets such as a White Card, working at heights and confined space entry.
The Australian Welder Certification Register is a useful way to show your qualifications are current when you tender.
What safety rules apply to a welding business?
Even as a one-person business, you’re a PCBU (a person conducting a business or undertaking) under WHS law. That means you’re responsible for safety for yourself, anyone you engage and anyone near your work.
Welding fumes deserve your attention first. They’re classified as a Group 1 carcinogen, and the exposure standard for total welding fumes is 1 mg/m³ over an 8-hour shift. From 1 December 2026, Safe Work Australia’s welding fume rules move to workplace exposure limits (WEL). If your fume control is “open the roller door”, it’s time to rethink it.
Your basic safety kit as a new business:
- Written risk assessments for workshop and site jobs, based on the model Code of Practice for welding processes.
- Local exhaust ventilation or fume extraction, plus respirators where extraction isn’t enough.
- Hot work permits on client sites, fire watch and the right extinguishers.
- Safe gas cylinder storage and transport, with Safety Data Sheets on hand.
- Training records and toolbox talks you can show a site manager.
Here’s the commercial upside. On larger sites, missing paperwork can get you walked off before you strike an arc. A tidy safety folder wins work.
What insurance does a welding business need?
Sparks, heat and other people’s property are a risky mix. Sort these before your first paid job:
- Public liability insurance: covers injury to others and damage to their property. Most builders won’t let you on site without it.
- Workers compensation: compulsory once you employ staff.
- Tools and equipment cover: for theft or damage to your rig and machines.
- Products liability and professional indemnity: worth a conversation if you do pressure pipe, structural or design-related work.
The assumption that catches new welders out: “I’m working in their shop, so I’m on their policy.” Often you’re not. Ask for the host business’s policy wording in writing, or get your own cover through a provider like BizCover. If you’re hiring, our guide to insurance for employers covers what’s compulsory.
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What legal documents does a welding business need?
Insurance pays out after something goes wrong. Contracts stop most things going wrong in the first place. Here’s what to use and when:
| Document | Use it when | What it fixes |
|---|---|---|
| Services Agreement (Supply to a Customer) | One-off jobs for many customers | Scope, deposits, payment dates and defects |
| Master Services Agreement | Repeat work for the same client | Sign once, then issue a short statement of work per job |
| Terms of Trade | You supply fabricated goods on account | Credit terms, title and risk in goods |
| Subcontractor Agreement | You bring in another welder or trade | Rates, quality, WHS and insurance duties |
| Labour Hire Agreement | You supply welders to another business | Who supervises, who pays and who’s responsible for safety |
| Employment Agreement | You hire your first employee | Pay, duties, tools and vehicles, termination |
Two clauses do most of the heavy lifting in a welding business. Here’s example wording to adapt (it’s a starting point, not tailored advice):
- Payment: “A deposit of [X]% is payable on acceptance of the quote. The balance is payable within [7] days of completion. We may suspend work while any invoice is overdue.”
- Customer specifications: “Where we build to drawings or specifications supplied by you, you’re responsible for their accuracy and fitness for purpose. Changes or rework required because of those specifications will be charged as a variation.”
Commercial clients will often send their own terms instead. Before you sign, look for pay-when-paid clauses, broad indemnities, liquidated damages and long retention periods. Price the risk or push back.
Hiring your first welder or apprentice
Your first hire usually happens because you’re turning work away. Good problem. But decide on employment type first: full time, part time or casual employment agreements each carry different award obligations under the Manufacturing and Associated Industries and Occupations Award.
Taking on an apprentice? The training contract needs to be registered with your state training authority. Lawpath lawyers regularly remind employers to confirm that registration has actually gone through, because an unregistered contract can create problems later.
Classifying workers correctly matters too. Paying a mate as a “contractor” on an ABN when he works your hours with your gear is a classic way to end up owing back-pay and super. Learn more in the webinar below:
Are you looking to hire an employee?
How do you find customers for a new welding business?
Start with the people who already buy welding. Builders, landscapers, fabrication shops with overflow, farmers and mechanics all need a reliable welder they can call.
- Set up a free Google Business Profile so you show up for “welder near me”.
- Post before-and-after photos of real jobs. Gates, trailers and repairs sell themselves.
- Drop into local builders and fabrication shops with a card and your insurance certificate.
- Ask every happy customer for a review straight after the job.
If you take enquiries or bookings through a website, add website terms and conditions and a privacy policy. Collecting names, addresses and job photos brings privacy obligations with it.
Do you want to start your own website?
What we see in Lawpath consultations with welding businesses
Lawpath lawyers and accountants speak with welders and fabricators every month. The same handful of problems keep coming up:
- Quote by text, chase by phone. Many businesses run on a quote and an email “yep, go ahead”. When the customer won’t pay, there’s nothing setting out deposits, due dates or interest. Written terms are the fix, plus a letter of demand when an invoice goes stale.
- Handshake labour deals. Welders who supply workers to other shops, or bring in mates on ABNs, often have no paperwork at all. That leaves payment, supervision and WHS responsibility up for grabs.
- Hot work before cover is confirmed. New operators start jobs in other businesses’ workshops assuming the host’s insurance extends to them. It often doesn’t.
- “You built it wrong” when they drew it wrong. Without a specifications clause, you can end up redoing work for free even when it matched the customer’s own drawing.
- Templates that don’t fit the trade. Generic contracts (including ones edited with AI tools) sometimes keep clauses that make no sense for fabrication, like software-style acceptance testing. A contract you don’t understand is hard to enforce.
None of these need a big legal bill to fix. They need the right document, filled in properly, before the job starts. Our guide to enforcing a payment covers what to do if you’re already chasing money.
Welding business startup checklist
- Pick your niche and write a one-page plan with your charge-out rate.
- Choose your structure: sole trader, partnership or company.
- Register your ABN, business name and (if needed) company and GST.
- Check whether your work needs a state building licence.
- Get public liability cover (and workers comp before hiring).
- Set up fume extraction, risk assessments and hot work procedures.
- Put a services agreement or MSA in front of every customer.
- Set up accounting software and a separate business bank account.
- Claim your Google Business Profile and start posting jobs.
Frequently asked questions
Do I need a licence to start a welding business in Australia?
Not usually for welding itself. You need a licence when your work counts as building work above your state’s threshold, such as residential building work over $5,000 (incl GST) in NSW or building work over $3,300 in Queensland. Repairs on vehicles, trailers and machinery generally fall outside these rules.
Can I run a welding business from home?
Yes, but check council zoning first. Noise, fumes, gas storage and customer traffic in a residential area can breach local rules. Many welders start mobile, working on customers’ sites, and only lease a workshop once demand is steady.
What qualification do I need to be a welder?
The standard trade qualification is the Certificate III in Engineering (Fabrication Trade), MEM31922. Clients doing structural or pressure work will often also ask for welder qualification to AS/NZS ISO 9606.
Should I be a sole trader or a company?
Sole trader is fine for solo, lower-risk repair work. A company makes more sense once you work on construction sites, hire staff or sign large contracts, because it separates business liabilities from your personal assets.
When do I need to register for GST?
Once your annual turnover reaches $75,000. You can register earlier if you want to claim GST credits on equipment, which many new welders do after buying machines and a vehicle.
What insurance is required for a welding business?
Workers compensation is compulsory once you have employees. Public liability isn’t legally required everywhere, but most builders and sites won’t let you work without it. Add tools cover, and consider professional indemnity for structural or pressure work.
What is the welding fume exposure limit in Australia?
Total welding fumes must stay below 1 mg/m³ averaged over an 8-hour shift. From 1 December 2026, exposure standards become workplace exposure limits (WEL), so review your extraction and respirator setup now.
What are the most profitable welding business ideas?
Specialist work (stainless, aluminium, pipe) and structural site welding usually command higher rates, but carry more licensing and insurance cost. Mobile repairs are cheaper to start and build a customer base quickly.
How do I stop customers paying late?
Take a deposit, set a clear due date and get written acceptance of your terms before you start. Include a right to suspend work on overdue invoices. If someone still won’t pay, a formal letter of demand is your next step.
How Lawpath can help you start a welding business
Lawpath puts your registrations, contracts and advice in one place, so you can spend your time on the tools instead of on admin. Pick from 550+ legal document templates, register your ABN or company online, and book a fixed-fee consultation with an experienced lawyer when a client sends you terms you’re not sure about. It’s the same setup 650,000+ Australian businesses have used to get started.
If this feels like a lot, you’re not behind. Every welder who runs a solid business today started with an ABN, a rig and one customer. Get your customer terms sorted first, because that’s the document that gets you paid.
Create your Services Agreement today and send it with your next quote.
