Your trade skills keep your business moving, but strong accounting keeps your business growing. When you keep clean records, price jobs correctly, and watch cash flow, you protect your profit and reduce stress. This guide explains accounting for tradies in simple English. You will learn what to track every week, how to handle GST and BAS, how to improve cash flow, and the best ways to use modern software like Xero or QuickBooks. Use these tips to save time, avoid mistakes, and make smarter decisions all year, not just at tax time.
Why accounting matters for tradies
Good accounting shows you which jobs make money and which jobs drain cash. It helps you set the right price, pay the right tax, and plan for tools, fuel, wages, and slow weeks. When you know your numbers, you can accept better work, say no to bad work, and grow with confidence. Strong habits also help you pass an ATO review or audit with fewer headaches.
Start right: structure, ABN, GST, and bank account
Set up your legal structure with care. Many tradies start as sole traders, and some later move to a company or trust for risk and tax reasons. Register for an ABN. If your turnover reaches $75,000 or more, register for GST and lodge BAS on time. Open a separate business bank account and, if possible, a separate tax savings account. When money comes in, move a fixed percent to the tax account each week. This simple habit keeps you ready for BAS and income tax.
Pick software that fits your trade
Choose software that makes your day easier. Look for bank feeds, mobile invoicing, quote-to-invoice tools, receipt capture, job costing, and BAS support. Xero and QuickBooks both offer strong options for tradies. Turn on automatic bank feeds, create standard invoice templates, and connect a receipt app so you can snap photos of dockets on site. When you automate routine work, you free time for jobs and quotes.
Build a tradie-friendly chart of accounts
Use clear categories so your reports tell a simple story. Common income and expense buckets include: materials, subcontractors, small tools and consumables, plant and equipment hire, fuel, vehicle expenses, insurance, protective gear (PPE), licences and memberships, waste and tip fees, site costs, advertising, software, accounting and legal, and bank fees. Keep it simple, but specific enough to see patterns. If an expense does not fit a category, add a new one with a straightforward name.
Quote, invoice, and collect faster
Send quotes quickly while the lead is warm. Use a quote template with scope, inclusions, exclusions, and a clear expiry date. When the client accepts, convert the quote to an invoice with one click. For larger jobs, use progress claims: deposit, progress stages, and final claim. Add a line for “variations” so you can charge for extra work as it happens. Set short payment terms (for example, 7 days). Offer card and online payments to remove barriers. Add late fees to your terms and use polite reminders at 1 day before due, on due, and 7 days after due. You improve cash flow when you make it easy to pay and you follow up fast.
Track jobs and costs in real time
Job costing helps you see profit by job, not just by month. Track labour hours, materials, and subcontractors against each job number. Record time daily. Attach supplier invoices to the job. Update the estimate when scope changes and send a variation for approval. If you run longer jobs, keep a simple work-in-progress (WIP) list with estimated costs to complete. When you compare the job estimate to actual costs weekly, you can fix problems early and protect your margin.
Set your charge-out rate with purpose
Do not copy a competitor’s hourly rate. Build your rate from the ground up. Start with your pay target, super, leave, and on-costs. Add a fair share of overheads (admin, software, rent, vehicle, insurance). Add a profit margin so the business can grow and replace tools. If you have apprentices or multiple crews, calculate rates for each level. Review your rate at least once a year, or sooner if fuel, wages, or materials jump.
Cash flow habits that keep you steady
- Send invoices the same day you finish the work or finish a stage.
- Use deposits for new jobs to cover materials and early labour.
- Offer payment links and QR codes so clients can pay on their phone.
- Review unpaid invoices every week; call slow payers early and stay polite.
- Build a 13-week cash flow forecast that updates with real numbers.
- Negotiate supplier terms, and time big purchases outside BAS and super due dates.
GST and BAS made simple
Choose cash or accrual GST to suit your cash flow. Cash basis reports GST when you get paid and when you pay suppliers. Accrual reports GST when you issue invoices and receive bills. Use correct tax codes for materials, labour, and purchases. Reconcile GST each month so your BAS is easy each quarter. Keep copies of tax invoices for purchases. If you make an error, fix it in the next BAS with a simple adjustment and keep a note of the change.
Payroll, super, and contractors
If you run payroll, pay staff on time, report through Single Touch Payroll (STP), and pay superannuation by the due date. Keep records for allowances, overtime, and leave. For subcontractors, confirm whether they are truly contractors or should be treated as employees. In building and construction, lodge the Taxable Payments Annual Report (TPAR) each year to report payments to contractors. Keep current insurance certificates (for example, public liability) on file for your subs and check them before each job.
Vehicles, tools, and equipment
Keep clear records for vehicle costs: fuel, servicing, tyres, rego, insurance, and tolls. If you use a logbook, keep it up to date and store it with your files. Track small tools and consumables as expenses. Track larger gear as assets and claim depreciation. Label assets and record serial numbers; this helps with insurance and resale later. When you replace gear, keep the purchase and sale paperwork together so your accountant can record the change correctly.
Receipt capture and record keeping
Get rid of shoe boxes. Use your phone to snap receipts as you buy materials or fuel. File by job number or supplier. Attach the receipt to the transaction in your accounting software. Back up data to the cloud. Keep a simple naming system: “2024-12-03_Bunnings_$187.40_Job123.pdf”. When a receipt fades, your digital copy stays clear. Tidy records save you hours at BAS and tax time.
Simple monthly routine
- Reconcile bank and card accounts to the cent.
- Review the profit and loss and check big swings in any category.
- Run aged receivables; chase anything over 7 days past due.
- Review job profitability; close finished jobs and bill final claims.
- Update your 13-week cash flow and plan major purchases.
Pricing mistakes to avoid
- Underestimating labour hours and travel time.
- Forgetting mark-up on materials and third-party hire.
- Doing free extras without a signed variation.
- Using one flat rate for all staff levels and job types.
- Not reviewing rates after cost increases.
Protect your profit with smart terms
Put your terms on every quote and invoice. List payment methods, due dates, late fees, and ownership of materials until paid. Use deposits and progress claims on longer jobs. For warranty work, set clear rules in your quote. Keep emails or signed approvals for changes. These simple steps reduce disputes and protect your cash.
When to bring in a pro
You can DIY bookkeeping, but bring in an accountant when you set up your structure, register for GST, buy major assets, hire staff, face an ATO review, or need tax planning. A good accountant helps you choose the right software, set better rates, and plan for growth. They save you time and often pay for themselves through better systems and fewer errors.
Quick checklist for the busy tradie
- Separate bank accounts and a weekly tax transfer.
- Quote fast, invoice fast, and follow up fast.
- Track time and materials by job number daily.
- Use receipt capture and reconcile weekly.
- Review profit by job and adjust future pricing.
- Lodge BAS on time and keep clean GST codes.
- Pay staff and super on time; lodge TPAR if required.
- Meet your accountant at least twice a year.
Conclusion
Accounting does not need to be hard. Use simple systems, repeat them every week, and keep your paperwork tidy. You will see your numbers clearly, make better choices, and sleep easier. If you want expert help, TASC works with tradies across Melbourne and beyond. We set up smart systems, tune your pricing, and keep your business compliant so you can get back on the tools with confidence.
