Understanding the relationship between ANZSIC and ATO codes
The Australian and New Zealand Standard Industrial Classification (ANZSIC) provides the foundational framework for categorising business activities across Australia. Developed by the Australian Bureau of Statistics, this system creates consistent industry definitions for statistical purposes. The ATO Business Industry Code (BIC) layer builds upon this foundation with additional tax-specific categorisations that may split broader ANZSIC classes into more precise tax-facing codes.
This relationship means bookkeepers often need to work with both classification systems simultaneously. The ANZSIC code helps with internal categorisation and industry analysis, while the BIC code is specifically required for many ATO reporting obligations including business activity statements and tax returns.
Practical workflow for classification
The most effective approach begins with identifying the correct ANZSIC classification based on the business's primary activities. Bookkeepers should consult the ABS ANZSIC definitions to determine the appropriate class, considering the hierarchy from division down to group and class levels. Once the ANZSIC classification is established, the corresponding ATO Business Industry Code can be identified using the ATO's published mapping.
For example, a business primarily engaged in "computer consultancy services" would fall under ANZSIC class 6922. However, the ATO might have multiple BIC codes within this class depending on specific service types or revenue streams. The correct workflow involves confirming which BIC code matches the business's largest income source within that ANZSIC classification.
Common classification mistakes to avoid
Many bookkeepers mistakenly assume ANZSIC and BIC codes are interchangeable, leading to incorrect reporting. Another common error involves using outdated classification versions - both ANZSIC and BIC codes undergo periodic updates that businesses must adopt. The current ANZSIC version is 2006 (Revision 2.0), while BIC codes are updated more frequently by the ATO.
Businesses that operate across multiple industries often struggle with classification. The appropriate approach is to classify based on the activity generating the majority of revenue, not necessarily the activity the business considers its primary focus. Mixed activities may require consulting both ABS guidelines and ATO specific rules for predominant income determination.
When to review and update classifications
Businesses should review their industry classifications whenever significant changes occur in operations or revenue sources. This includes launching new product lines, discontinuing major services, or shifting business models substantially. The transition from service-based to product-based revenue, or incorporating digital platform operations, often necessitates classification review.
Annual reviews during tax preparation provide a natural opportunity to verify that classifications remain accurate. Bookkeepers should also check for updates to classification systems themselves, as both ABS and ATO occasionally revise their coding structures to reflect economic changes.
Implementation across accounting systems
Most accounting software platforms allow businesses to store both ANZSIC and BIC codes in company profiles, though the fields may be labeled differently. Setting up these codes correctly ensures consistent reporting across financial statements, tax documents, and internal management reports. Integration with payroll systems may also rely on these classifications for industry-specific reporting requirements.
Larger businesses operating multiple entities should maintain a classification matrix documenting the ANZSIC and BIC codes for each business unit or division. This becomes particularly important for consolidated reporting and ensuring each entity's activities are properly classified according to their primary operations.