Bookkeeping for Tradies: The Simplest Way to Track Income, GST and Receipts

Most tradies got into their trade to do the work — not to sit at a desk tallying figures. But if you're running your own business, the ATO expects you to keep records. And if you're registered for GST, there's a BAS due four times a year that requires accurate numbers.

The good news: bookkeeping for a solo tradie doesn't need to be complicated. You don't need an accounting degree. You need a simple system you'll actually stick to.

This guide covers the three things that actually matter, how to handle receipts without a shoebox, what your invoices need to include under ATO rules, and a practical weekly routine that keeps things under control.

Quick answer: The three non-negotiables for tradie bookkeeping are: tracking GST collected and paid, recording all deductible expenses, and meeting BAS deadlines. A simple app or spreadsheet plus a weekly 20-minute routine covers 90% of what you need. Add a bookkeeper when it's taking more than 4 hours a week.

This is general information, not tax advice — see your registered tax agent for your specific situation.

Why Most Tradies Hate Bookkeeping

Let's be honest about this. The complaints are usually:

  • "I've been on the tools all week, I don't want to look at a computer"
  • "I've got receipts in the glove box, back pocket and probably the washing machine"
  • "I'll sort it at tax time"

The "sort it at tax time" approach is expensive. You spend hours reconstructing what happened months ago, miss deductions you can't prove, and stress through the process. A tax agent charges for the extra time it takes to untangle a year of chaos.

The alternative isn't dramatically harder — it's just a different habit. Fifteen to twenty minutes, once a week.

The 3 Things That Actually Matter

1. GST Collected and Paid

If you're GST-registered (mandatory once turnover hits $75,000 in any 12-month period), every tax invoice you issue includes 10% GST. That GST isn't yours — you're collecting it on behalf of the ATO.

Every quarter, you lodge a BAS and hand over:

  • GST you collected from customers
  • Minus GST you paid on business purchases (your input tax credits)
  • The difference goes to the ATO (or comes back to you if your purchases were larger)

If you don't track this throughout the quarter, you'll be scrambling to reconstruct it from bank statements before the BAS deadline.

2. Deductible Expenses

Every receipt for a legitimate business expense reduces your taxable income. Tools, fuel, materials, phone, insurance, workwear — it all adds up.

A tradie spending $30,000/year on deductible business costs (not counting wages) at a 34.5% marginal tax rate is looking at about $10,350 in tax savings from those deductions. You need the records to claim them.

3. BAS Deadlines

The quarterly BAS due dates for 2025-26:

  • Q1 (Jul-Sep 2025): 28 October 2025
  • Q2 (Oct-Dec 2025): 28 February 2026
  • Q3 (Jan-Mar 2026): 28 April 2026
  • Q4 (Apr-Jun 2026): 28 July 2026

Miss them and you risk a Failure to Lodge penalty. Lodge on time even if you can't pay — contact the ATO about a payment plan.

Receipt Management: Getting Off the Shoebox System

The shoebox approach — or its modern equivalent, a pile of PDFs in your Downloads folder — creates work later. Every receipt is a potential deduction. The moment it's lost, so is the deduction.

Option 1: Photo Apps

The simplest upgrade from the shoebox: photograph every receipt the moment you get it. Most banking apps and bookkeeping apps have built-in receipt capture. The ATO accepts digital copies as valid records, provided they're clear and legible.

Habit to build: receipt arrives, phone comes out, photo taken, receipt discarded (or kept in a single physical folder if you prefer belt-and-braces).

Option 2: Direct Bank Feed

Connect your business bank account to bookkeeping software. Transactions import automatically. You review them weekly, confirm what they're for, and attach receipts where needed. No manual data entry for bank transactions.

Option 3: Weekly Batch Processing

If you don't want apps, set aside 20 minutes every Monday morning. Gather all receipts from the previous week, enter them into a spreadsheet or software, and file the originals. One short session per week is far less painful than a four-hour reconstruction session in March.

What an ATO-Compliant Tax Invoice Must Include

If you're GST-registered and invoicing for $82.50 or more (GST-inclusive), you must issue a tax invoice. A scribbled quote or a casual text message is not enough.

Under ATO rules, a tax invoice must include:

Requirement Example
The words "Tax Invoice" Printed clearly at the top
Your ABN 12 345 678 901
Date of issue 12 February 2026
Description of goods or services "Supply and install hot water system — 14 Smith St"
GST amount (or statement it includes GST) "GST: $180.00" or "Total price includes GST of $180"
Total price "$1,980.00 (GST inclusive)"
Name and address of the recipient (for invoices over $1,000) Required above $1,000

Invoices under $82.50 don't require all of the above — but even for small jobs, getting into the habit of proper invoicing is worth it.

Common mistake: Sending a quote or estimate that was never converted to a proper invoice. Your bank deposit doesn't prove the sale without an invoice.

Separating Personal and Business Spending

Running everything through one bank account sounds fine until you're trying to work out which Bunnings run was for the job and which was for the backyard deck.

The single most impactful thing most tradies can do for their bookkeeping is open a dedicated business bank account. You don't need a fancy business account — any separate account works. Every dollar of business income goes in, every business expense comes out. Your personal account stays personal.

This makes:

  • BAS preparation faster (no filtering personal spending from business)
  • Tax time faster (everything's in one place)
  • Your accountant happier (less time = lower fees)

When to Upgrade from a Spreadsheet

A spreadsheet works for a one-person operation with straightforward income and expenses. The signs you've outgrown it:

  • BAS preparation is taking you more than an hour
  • You've had to go back and correct errors
  • You can't quickly tell whether a quarter has been profitable
  • You have multiple income streams or job types you want to track separately

Software like Summed, Xero or Rounded connects to your bank, auto-categorises expenses, and generates BAS-ready GST totals. The cost (from $9-30/month) is deductible and pays for itself in saved time within the first quarter.

When to Hire a Bookkeeper

The rule of thumb: if you're spending more than four hours per week on your books, it's time to hire someone. At $50-80/hour for a bookkeeper versus what you can earn on the tools, the maths usually favours delegation.

A bookkeeper can handle:

  • Bank reconciliation
  • BAS preparation and lodgment
  • Tracking job profitability
  • Payroll if you have employees

You stay on the tools earning money; they keep the records. It's not a luxury — it's a business decision.

A Simple Weekly Routine

Here's what a practical bookkeeping routine looks like for a solo electrician:

Monday morning (15 minutes):

  • Photo any receipts from last week before they get lost
  • Review last week's bank transactions in your app
  • Flag anything unusual or personal to exclude

End of each working day (2 minutes):

  • Invoice the day's completed jobs immediately (customers pay faster when invoiced promptly)
  • Note any out-of-pocket expenses

End of each quarter (1-2 hours):

  • Review GST totals for the period
  • Check all expenses are categorised correctly
  • Lodge BAS via myGov or your software

July each year:

  • Run a full profit and loss for the financial year
  • Provide to your tax agent along with organised records

Tools That Make This Easier

Keeping the books clean throughout the year is what makes BAS prep and tax time painless. The alternative — reconstructing a year of transactions from bank statements — costs you time and money.

Summed handles BAS prep automatically — try it free for 30 days at $9/mo. Start free →

FAQ

Q: I'm a sole trader who does cash jobs. Do I have to declare cash income?

A: Yes. All business income is assessable, including cash. The ATO uses data-matching against industry benchmarks and bank deposit patterns. Under-reporting cash income is a serious compliance risk.

Q: Do I need a separate ABN for each trade I do?

A: No. Your ABN covers all the business activities you carry out as a sole trader. If you do electrical work and solar installation, it's all under the one ABN.

Q: My supplier doesn't give me tax invoices. Can I still claim the expense?

A: For purchases over $82.50, you need a tax invoice to claim the GST portion as an input tax credit. For income tax deduction purposes, you generally need some form of documentation. Contact the supplier and request proper invoices going forward.

Q: How long do I need to keep my invoices and receipts?

A: Five years from the date you lodge the relevant tax return or BAS. Digital records are fine — keep them backed up.

Q: What if a client disputes an invoice?

A: A properly documented tax invoice is your evidence of the agreement. For large jobs, a written quote or contract signed by the client is additional protection. If it goes to a dispute, your records will matter.

Q: Can I invoice personally or does it need to be a business name?

A: As a sole trader you can invoice in your own name or a registered business name. Your ABN is what matters. If you trade under a business name, register it with ASIC.

Q: I quote jobs as a lump sum. How do I show GST on the invoice?

A: Show the GST as a line item or add a statement like "Total price includes GST of $X". Both are acceptable under ATO rules.

Q: What's the easiest way to track whether I'm profitable on each job?

A: Invoice amount minus materials, subcontractor costs and direct labour hours (valued at your effective rate). Most bookkeeping software can generate a simple job profitability report if you track expenses against jobs.