Automotive businesses run on parts margin, labour rates, and equipment that needs to keep working. Income flows through repair invoices, parts sales, and sometimes vehicle trade-in. Each has different GST treatment and different margin profile, and without proper costing the workshop owner cannot tell which jobs and customers are actually paying.
Add subcontractor mechanics who may be employees or contractors depending on the arrangement. Add equipment that depreciates over multi-year cycles. Add the cash flow patterns of insurance work and corporate accounts. The financial complexity behind a workshop is well above generic small business.
A general accountant can miss legitimate deductions, classify workers wrongly, or fail to track job profitability. Specialist automotive accounting understands the cost structure, the equipment cycle, and the workforce arrangements of the sector. Trinity has been doing this for years.