When you need an IRD number

Your IRD number identifies you for all the tax-related events in your life. Your IRD number is unique to you, and you keep the same IRD number for life.

There is no cost when you apply for an IRD number with us.

Using an IRD number

You need an IRD number for any tax-related obligations you have or entitlements you get. Common examples of when you need an IRD number include:

• earning income, for example from a job, benefit or investment
• opening a bank account
• joining KiwiSaver
• applying for Working for Families, child support, FamilyBoost or a student loan
• buying, selling or transferring property in New Zealand.

Children's IRD numbers

If you are applying for any kind of family payments, you will need an IRD number for your child. Children also need IRD numbers of their own if they earn an income, including interest payments from a bank account or investment.

Child's IRD number 

Keep it safe

Keep your IRD number where you can easily find it. You'll need it for all tax-related events in your life.

If you lose your number, we can help you find it.

Find my IRD number

Getting an IRD number

Most sources of income mean you'll need to get an IRD number.

If you do not have an IRD number when you start earning income, you'll pay a higher tax rate of 45%.