How a construction tax engagement usually runs
A focused tax accountant for construction firms starts with a short diagnostic: business structure, GST method (cash or accrual), payroll settings, subcontractor workflow, current BAS/ATO position, software stack (Xero, MYOB or QuickBooks) and any overdue items.
From there the work typically flows in three stages:
- Immediate triage: fix GST coding for progress claims and deposits, reconcile payroll, lodge outstanding BAS, and prepare TPAR where relevant.
- Process design: standardise job costing and WIP, set clear retention and variation treatments, document a monthly close and BAS checklist, and align payment terms to cash flow.
- Ongoing review: monthly or quarterly reconciliations, proactive tax planning, labour vs subcontractor ratio tracking, and continuous payroll/STP accuracy.
If your needs are broader than tax, see bookkeeping for construction and construction payroll, or use the form to outline your situation.
Australian context to keep in view
- GST on progress claims, deposits and retentions must reflect your GST reporting method and contract terms to avoid mis‑timed BAS.
- The Taxable Payments Annual Report (TPAR) applies to building and construction businesses that pay contractors and is generally due by 28 August each year.
- Single Touch Payroll (STP Phase 2), super guarantee and award interpretation require consistent payroll setup and reconciliations.
- Verify tax or BAS registrations with the Tax Practitioners Board public register and make sure scope covers BAS, income tax and payroll where needed.
- For developers and builders involved in property sales, GST margin scheme and timing can be complex—specialist advice is essential.
Explore the broader tax hub at Tax Accountant or the general Accounting Services pillar for more pathways.
What to compare before you commit
Scope
Confirm the proposal covers exactly what you need: GST setup for progress claims/retentions, BAS lodgements, TPAR, payroll/STP checks, WIP and year‑end tax planning.
Software fit
Look for confident use of Xero/MYOB/QuickBooks with job costing, project tracking and clear GST coding rules—not just brand names.
Turnaround and communication
Ask about month‑end timing, BAS cycles, who you contact in urgent periods, and how scope changes are handled.
Commercial fit
Compare fee model (fixed vs hourly), reporting depth (job margins, labour vs subcontractor mix), and whether you want compliance only or advisory as well.
Common construction tax scenarios we handle
- Switching GST method or correcting mis‑timed GST on progress claims and deposits.
- Setting up retentions and variations so revenue and GST are recognised correctly.
- Preparing and lodging TPAR with clean subcontractor records (ABNs, totals, exclusions).
- Aligning payroll to awards and STP, reconciling super, and fixing leave or overtime classifications.
- Building a monthly job margin report that ties to the BAS and end‑of‑year tax outcome.
- Quarter‑to‑quarter tax planning so PAYG instalments and cash flow match project timing.
Best next steps
Write down the exact outcome you want: on‑time BAS, correct GST on progress claims, a reliable TPAR, payroll confidence, or clearer job margins. Shortlist providers against that outcome—not just the title on the door.
Use these related pages to go deeper or broaden scope:
Frequently asked questions
What taxes and reports are most relevant to construction firms?
Construction firms commonly deal with GST on progress claims and deposits, BAS lodgements, PAYG withholding and instalments, the Taxable Payments Annual Report (TPAR) for subcontractors, Single Touch Payroll (STP) reporting, superannuation, and work‑in‑progress (WIP) for longer jobs. Retentions, variations and milestone billing need clear treatment to keep GST and income timing correct.
How should progress claims, deposits and retentions be treated for GST?
GST generally applies to progress claims when issued (accrual) or when paid (cash), depending on your GST reporting method. Deposits are typically subject to GST when applied or forfeited. Retentions are usually excluded until released. Your accountant should confirm settings in your accounting software to reflect your contracts and method.
What is TPAR and do we need to lodge it?
The Taxable Payments Annual Report (TPAR) is required for businesses in building and construction that pay contractors. It reports the total payments made to each contractor for the financial year and is generally due by 28 August. A construction‑experienced tax accountant can confirm if you’re in scope and set up accurate coding and reporting.
Cash vs accrual for construction – which is better?
There’s no single right answer. Cash can simplify BAS for smaller operators, while accrual can better match income and costs where projects span months with WIP, retentions and variations. Choose the method that reflects your workflow and cash cycle, then keep processes consistent.
Can one provider handle bookkeeping, payroll and tax?
Yes. Many businesses prefer one coordinated provider or a lead accountant who oversees bookkeeping and payroll so GST, BAS, TPAR and job costing stay aligned across the year.
How do I vet a tax accountant for construction firms?
Confirm Tax Practitioners Board registration, ask for examples of construction work, check software depth with job costing/WIP, and request a simple plan that covers clean‑up, BAS calendar, payroll cadence and reporting. Compare both scope and response times.