Registering for tax
You must register for tax with Revenue when you:
- become a sole trader
- set up a trust
- start a new company.
Registering online (eRegistration) is the fastest, cheapest and most efficient way of registering for tax.
If you submit a paper application when you should have submitted an online application, it will not be processed. The paper copy will be returned to you with an instruction to complete the registration process through Revenue Online Service (ROS).
Next: What is a Tax Registration Number?