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Registering for tax

  1. Overview
  2. What is a Tax Registration Number?
  3. eRegistration
  4. How to register for tax as a sole trader
  5. How to register for tax as a trust or partnership
  6. How to register for tax as a new company
  7. Mandatory electronic payment of taxes and filing of tax returns
  8. Exclusion from mandatory electronic filing

How to register for tax as a new company

To register for tax, you must have a Companies Registration Office (CRO) number issued by the CRO.

When you start a new company, you or your tax agent must inform Revenue.

If your company is represented by a tax agent, they must submit an online registration application on your behalf through Revenue Online Service (ROS).

If your company is not represented by a tax agent, you must submit a:

The TR2 forms can be used to register for:

You will be given a Tax Reference Number to use when trading and filing your tax returns.

Filing returns and making payments

Once your company has been registered, you must file all payments and returns online through ROS.

Next: Mandatory electronic payment of taxes and filing of tax returns

Published: 11 January 2024 Print this page

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