Information for tax agents
Tax agents manage long service for contractors by lodging a Self-Employed Worker Certificate of Service (SEWCOS) each year for eligible building and construction work a contractor has done in NSW.
You must be a registered practitioner with the Tax Practitioners Board (TPB). The TPB administers the registration of tax agents in Australia.
For more information, please refer to the Tax Practitioners Board.
You must have the Tax Agent Number (TAN)* issued from the board. A TAN is a unique number allocated to tax agents when they are registered by the Tax Practitioners' Board.
How to lodge a SEWCOS
SEWCOS can be lodged online using the Tax Agent Portal.
View information on how to log in for the first time.
