Bookkeeping Systems for Residential Builders in Australia

What it is

Bookkeeping is the routine recording of business income and expenses, the matching of those records to invoices and bank statements, and the production of reports the ATO and the business owner can rely on. For a residential builder in Australia the system also feeds Business Activity Statement (BAS) lodgement, Single Touch Payroll, the Taxable Payments Annual Report (TPAR) and the end of year tax return.

The standard stack in Australia is a cloud accounting platform (Xero or MYOB) connected to a bank feed, a payroll module, a quoting and job costing tool, and often a CRM. The ATO recognises Xero and MYOB as compliant for record keeping under section 262A of the Income Tax Assessment Act 1936 and the equivalent GST record keeping rules.

GST registration and BAS

A builder must register for GST if turnover reaches $75,000 in a 12 month period. Once registered the builder lodges a BAS that reports GST collected, GST paid, PAYG withholding for employees and any PAYG instalments. Most builders lodge quarterly because annual turnover sits under $20 million. Quarterly BAS due dates are 28 October, 28 February, 28 April and 28 July, with an extra two weeks if lodged online or through a registered tax or BAS agent.

A builder operating without GST registration above the threshold becomes personally liable for the GST that should have been collected from clients. The ATO can backdate registration and chase the unpaid GST even if the builder never charged it to homeowners.

Cloud accounting platforms

Xero is the dominant choice for AU residential builders. Its bank feed coverage, BAS lodgement, payroll and Single Touch Payroll reporting are built in. MYOB Business and MYOB AccountRight cover the same ground and tend to be preferred by older builders who started on MYOB desktop.

Either platform handles the bookkeeping needs of a builder under $5 million turnover. The choice comes down to which one the accountant prefers and which integrations the builder needs.

Job costing and quoting integrations

Generic accounting tools do not track cost to complete by job, retention amounts, variations or progress claim history. Builders fill this gap with a job costing tool that integrates with Xero or MYOB. The common picks in Australia are Buildxact, Databuild, Beams, Buildlogic and TradeForm, all of which push invoices, bills and payroll into the accounting ledger and pull customer and supplier records the other way.

A good integration removes double data entry. The builder quotes in the job costing tool, the approved variation flows to the customer invoice in Xero, and the bill from the supplier matches against the purchase order on the job. End of month, the builder sees gross profit per job and cash position in one view.

CRM integration

CRM tools like HubSpot, Pipedrive and TradeForm sit on top of the quoting workflow. They track leads, quotes sent, quotes won and the pipeline of future revenue. Linking the CRM to the accounting platform means a won quote can become a customer in Xero with one click, and the bookkeeper does not have to retype contact details. This matters most when the builder runs more than 20 active leads at once.

Records the ATO expects

Under the Tax Administration Act and the GST Act the builder must keep records for five years from the date the record is created or the transaction is completed, whichever is later. Records must be in English (or easily convertible to English) and must explain the transaction. Acceptable records include tax invoices, bank statements, contracts, timesheets, logbooks, BAS lodgement receipts and payroll reports.

The builder should also keep records that prove TPAR contractor details (ABN, name, address and gross amount paid) and records that support deduction claims for tools, vehicles and home office use. Photos, GPS logs and project diaries also count as supporting evidence when the ATO asks how a deduction was calculated.

What good looks like

A clean bookkeeping system for a residential builder hits five marks. Bank feeds reconcile weekly, not monthly. Supplier bills are entered against a job and a purchase order. Payroll runs through Single Touch Payroll on payday. The BAS lodges on time every quarter. The job costing tool and the accounting ledger show the same gross profit per job at month end.

When all five marks are hit, the end of year tax return takes hours not weeks, the TPAR lodges in one click and the builder can answer cash flow questions in real time. When even one mark slips, the builder ends up reconstructing records in July and August, paying extra accountant fees and risking an ATO review.