Bookkeeping for Tradies: What to Sort Before BAS Time
BAS time is easier when your records are already tidy. Check invoices, receipts, bank records, GST, payroll and contractor details early — then hand clean books to your bookkeeper or BAS agent before the deadline, not during the scramble.
Bookkeeping for tradies should be sorted before BAS time by checking invoices, receipts, bank records, GST coding, payroll, contractor details and cash flow — then handing clean records to your bookkeeper, accountant or registered BAS agent before the deadline.
For most Australian tradies, the hard part isn't the BAS form itself. It's finding missing receipts, chasing jobs that were paid late, separating personal spending from business costs, and making sure GST records are clean enough for a proper review.
This guide is for trade business owners who are busy quoting, booking jobs, managing materials and keeping customers moving. It's a practical way to sort the bookkeeping that matters before BAS time — without pretending every business runs the same setup. If you want help turning this into a working routine, start with the Bookkeeping for Tradies page.
Why does BAS time get messy for trade businesses?
Because trade businesses have moving jobs, late supplier invoices, deposits, cash flow pressure, vehicle costs, materials, subbie costs and customer payments all landing at different times. Gaps appear when records aren't kept current.
A builder, plumber, sparky, landscaper or maintenance operator can have several jobs open at once. Some customers pay deposits, some pay on completion, some jobs need materials paid upfront, and some supplier invoices arrive after the work's done. Leave the books until the deadline and it gets hard to see what belongs in the period and what needs follow-up.
The aim isn't to make bookkeeping complicated. It's to make it boring, repeatable and easy to hand over. A good process gives you:
- Clear sales records for the BAS period
- Receipts and supplier bills stored in one place
- Bank transactions matched to real business activity
- GST entries you can check before lodgement
- Payroll and super details ready for review
- Less last-minute chasing before the deadline
For official guidance, check the ATO records you need to keep. Your own accountant or BAS agent should guide the details for your business.
Which records should you sort first?
Sales invoices, customer payments, supplier bills, receipts, bank transactions, and any business costs paid from personal accounts. These give your bookkeeper the base they need to review the period.
Start with the records that affect money coming in and money going out. Get those clear and the rest is easier. Leave them scattered across emails, gloveboxes, phone photos and bank feeds and the review takes longer — with more chance of missing something.
Before BAS time, check these:
- All invoices issued during the BAS period
- Customer payments received and any unpaid invoices
- Supplier invoices for materials, equipment and services
- Receipts for fuel, tools, parking, tolls and job supplies
- Business costs paid from personal cards or accounts
- Refunds, credits and cancelled invoices
- Bank feed transactions that haven't been matched
GST, invoices and receipts
GST review is easier when every invoice and receipt shows what was bought, who supplied it, when, and how it connects to the business. Poor records make BAS review slower and less reliable.
For tradies, GST records often cover materials, hire equipment, advertising, tools, software, vehicle costs, uniforms, phone and office expenses. Some are straightforward. Others need judgement from your accountant or BAS agent — especially anything with both business and private use.
Use this quick sorting table before handing records over:
| Record type | What to check | Why it matters |
|---|---|---|
| Sales invoices | Invoice date, customer, job details and payment status | Confirms income for the period |
| Supplier bills | Supplier name, date, GST amount and business purpose | Supports expense and GST review |
| Receipts | Photo or digital copy stored with the transaction | Reduces missing proof at review time |
| Bank transactions | Matched to invoices, bills or clear expense categories | Prevents uncoded items building up |
| Personal payments | Business costs paid personally and recorded clearly | Stops real costs being missed |
The key is consistency. A receipt that sits in your ute for three months can fade, get lost or become hard to match. Photographed and stored when the cost happens, the BAS review is far cleaner.
The ATO also publishes guidance on business activity statements. Use it as a general reference, then confirm your situation with the right adviser.
Payroll, contractors and tools
Check these before BAS time — they can affect more than one part of your records. Treat them as review items, not afterthoughts.
If you've got employees, make sure wage records, super, leave and payroll reports are current. If you use subcontractors, keep their invoices and details in the same system as other supplier costs. If you bought larger tools or equipment, flag them for your adviser rather than coding them quickly at the last minute.
Keep notes for anything that needs judgement, like:
- A vehicle used for both business and personal trips
- Tools bought for a specific job or for general use
- Deposits received before work is completed
- Customer invoices that are overdue or disputed
- Materials bought in one period and used in another
- Costs paid by a business partner or staff member
These notes help your bookkeeper ask better questions and help your accountant make the right call. They also cut the risk of rushed guesses near lodgement time.
What does a simple BAS routine look like?
A weekly record check, a monthly cleanup, and an early handover before the deadline. That rhythm keeps the work small instead of letting it become a quarterly scramble.
Build a routine that suits how you work. If you're on tools most days, don't set up a process that needs an hour every morning — build one that gets the right records into the right place fast. A practical routine can look like this:
- Once a week, photograph or upload all receipts
- Once a week, check invoices that are unpaid
- Once a month, review bank transactions still unmatched
- Before BAS time, check payroll and contractor records
- Before BAS time, flag anything that needs adviser review
- A few days before the deadline, hand the file to your bookkeeper or BAS agent
When should you get bookkeeping help?
When BAS time regularly causes stress, records run late, GST feels unclear, payroll is growing, or you don't have clean visibility over cash flow. Waiting until the deadline usually makes it harder.
Bookkeeping support isn't only about lodgement. It's about clearer records so you can see what's actually happening in the business — which invoices need chasing, which costs are climbing, and whether you've got enough cash to cover the next round of bills.
Good bookkeeping help can support:
- Cleaner BAS preparation
- Better invoice and receipt habits
- More consistent bank reconciliation
- Cleaner payroll and contractor records
- Clearer cash flow visibility
- A smoother handover to your accountant or BAS agent
If you also need help building a broader business admin and marketing setup, Tradie Essentials can connect the bookkeeping routine with practical trade pages like Electricians, Plumbers and the About Us page.
FAQs
What should tradies do before BAS time? +
Check invoices, receipts, supplier bills, payroll, contractor records, bank transactions and GST coding. The goal is to hand clean records to a bookkeeper, accountant or registered BAS agent early enough for a proper review.
How often should a tradie update bookkeeping records? +
A weekly receipt and invoice check is a good starting point for most trade businesses, plus a monthly bank transaction cleanup. The more often records are updated, the less pressure there is near the BAS deadline.
Do tradies need a bookkeeper for BAS? +
Some tradies manage records themselves, but many get help once GST, payroll, contractors or cash flow get harder to track. BAS lodgement rules depend on who's providing the service, so speak with a qualified adviser for your situation.
What records should be kept for business expenses? +
Keep invoices, receipts, supplier bills, bank records and notes that explain the business purpose of each expense. For mixed business and personal use, keep clear details and ask your accountant or BAS agent how the item should be treated.
Why does BAS time become stressful for trade businesses? +
It gets stressful when invoices, receipts, payroll details and bank transactions aren't kept current. Trade businesses often have jobs, deposits, materials and late payments moving at once, so small record gaps build up quickly.
Make BAS time easier — sort the books before, not during
Bookkeeping for tradies works best when the records are tidy before BAS time, not during a last-minute scramble. If your receipts, invoices, GST records or payroll are eating too much time, we can help you build a cleaner routine.
This guide is general information only and isn't financial, tax or BAS advice. Lodgement rules and your individual circumstances vary — confirm anything specific with your accountant or a registered BAS agent.