Moving Between NZ and Australia: 7 Key Tax Residency & Double Taxation Rules

Moving between New Zealand and Australia can create important tax obligations in both countries. If you are relocating from Auckland to Sydney, Wellington to Melbourne, Brisbane to Auckland, or anywhere else across the Tasman, your tax residency should be reviewed before you assume where you need to pay tax.

Your tax position can become more complicated if you continue to own property, operate a business, receive employment income, hold investments or maintain other financial connections in the country you leave.

The NZ–Australia Double Tax Agreement provides rules for certain cross-border tax situations, including circumstances where both countries may have a taxing right. However, the agreement does not mean that moving countries automatically eliminates your tax obligations in the country you leave.

This guide explains NZ Australia tax residency, dual residency, foreign income, double taxation, foreign tax credits and the key issues to consider when moving between New Zealand and Australia.

What Happens to Your Tax When You Move Between NZ and Australia?

When you move between New Zealand and Australia, there are two important tax questions to answer:

1. Which country considers you a tax resident under its domestic rules?
2. How do the NZ–Australia tax treaty rules apply to your circumstances?

These questions are connected, but they are not necessarily the same.

For example, someone moving from Auckland to Sydney could potentially have residential, family, employment or financial connections with both countries. The date of the move is therefore not necessarily the only factor that determines the person’s tax position.

Inland Revenue: Tax residency status for individuals

What Is Tax Residency?

Tax residency determines which country’s tax rules may apply to you and what income you may need to report.

Tax residency should not be confused with citizenship, visa status or simply the country shown on your passport.

Your circumstances can include factors such as where you live, your permanent home, how long you spend in a country, your family connections, employment, business interests and other financial or personal connections.

New Zealand Tax Residency When Moving to Australia

If you are moving from New Zealand to Australia, you should establish whether and when you cease to be a New Zealand tax resident.

New Zealand’s individual tax residency rules include a permanent place of abode test and a day-count test. Being physically outside New Zealand for an extended period does not automatically answer every residency question.

Inland Revenue explains that an individual generally becomes a non-resident when they do not have a permanent place of abode in New Zealand and are away from New Zealand for more than 325 days in any 12-month period, subject to the relevant rules.

Read Inland Revenue’s guidance on leaving New Zealand

This makes it important to establish the relevant residency dates rather than simply using the date you left New Zealand.

Australian Tax Residency When Moving From NZ

Australia has its own rules for determining whether an individual is an Australian tax resident.

The Australian Taxation Office considers the circumstances of the individual when assessing tax residency. Factors can include living arrangements, relationships, employment and economic connections.

If you become an Australian tax resident, Australian tax rules can generally apply to your worldwide income, subject to the relevant rules and any applicable treaty provisions.

Australian Taxation Office: Your tax residency

Can You Be a Tax Resident of Both NZ and Australia?

Yes, it is possible to be a tax resident of both New Zealand and Australia under their respective domestic laws.

This situation is commonly referred to as dual tax residency.

If both countries consider you resident under their domestic rules, the NZ–Australia Double Tax Agreement may become important. Treaty provisions can help determine residence for treaty purposes and may affect how taxing rights are allocated.

This is one reason why cross-border tax advice should consider both countries rather than looking at New Zealand or Australia in isolation.

Inland Revenue: Dual tax residents

What Is the NZ–Australia Double Tax Agreement?

The NZ–Australia Double Tax Agreement, also called a tax treaty, provides rules for dealing with certain cross-border income and taxation issues between the two countries.

The agreement can help address situations where the same taxpayer has connections with both countries or where income has a connection with both jurisdictions.

However, a Double Tax Agreement does not mean that all income will be taxed only once or that a person can choose whichever country’s tax system has the lower tax rate.

The treatment depends on the type of income, residency position and relevant domestic and treaty provisions.

Inland Revenue: New Zealand–Australia tax treaty

How Does Double Taxation Work Between NZ and Australia?

Double taxation can arise when the same income is potentially taxable in both New Zealand and Australia.

For example, a New Zealand tax resident may receive certain Australian income. Australia may have taxing rights over that income while New Zealand may also include the income under its rules for taxing residents.

In circumstances where foreign tax has been paid, New Zealand’s foreign tax credit rules may provide relief, subject to applicable limits.

Inland Revenue: New Zealand tax residents and overseas income

Do NZ Tax Residents Pay Tax on Australian Income?

Generally, New Zealand tax residents need to consider their worldwide income. This means Australian income may need to be included when determining your New Zealand tax obligations while you remain a New Zealand tax resident.

The exact treatment depends on the type of income and the rules that apply. Australian income may include:

• Employment income
• Rental income
• Interest
• Dividends
• Business income
• Investment income
• Other income that may be taxable under New Zealand rules

Inland Revenue: Tax for New Zealand tax residents

What Happens to Australian Income After Moving to Australia?

Your tax position can change when you cease being a New Zealand tax resident and become an Australian tax resident.

The timing of the residency change is important because income earned before and after the change may be subject to different reporting and tax rules.

You may also continue to have New Zealand tax obligations after moving to Australia if you continue to receive New Zealand-source income.

For example, you could move permanently to Melbourne while retaining a rental property in Wellington. The Australian tax position and the continuing New Zealand obligations relating to the property would need to be considered separately.

What Happens to NZ Property After Moving to Australia?

If you move to Australia but continue to own New Zealand property, the property can continue to create New Zealand tax considerations.

For example, NZ rental income may continue to have New Zealand tax implications. Once you become an Australian tax resident, the Australian treatment of that income may also need to be considered.

The interaction between the two systems depends on factors including your residency, the property, ownership structure and the nature of the income.

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What Happens to Australian Property After Moving to NZ?

The same issue can arise in the opposite direction.

If you move from Australia to New Zealand while retaining an Australian rental property, shares or other investments, your new New Zealand tax residency may create additional reporting considerations.

New Zealand residents generally need to consider worldwide income, while Australian-source income may continue to have Australian tax implications.

What Happens to Australian Shares When You Move to NZ?

Australian shares should be reviewed when your tax residency changes.

The treatment may depend on whether you receive dividends, dispose of shares, hold investments through another entity or fall within specific New Zealand investment rules.

Do not assume that an investment’s Australian tax treatment will automatically be identical under New Zealand tax rules.

A residency change is a useful time to review your investment portfolio and understand the relevant New Zealand reporting requirements.

How Do Foreign Tax Credits Reduce Double Taxation?

Foreign tax credits can provide relief where foreign tax has been paid on income that is also taxable in New Zealand.

However, the amount of credit available may be limited. The rules can depend on the amount of foreign tax paid, the New Zealand tax attributable to the same income and the applicable treaty provisions.

You should retain appropriate records showing foreign income and tax paid overseas.

Moving Between NZ and Australia: Tax Residency Checklist

Common NZ–Australia Tax Residency Mistakes

Assuming Moving Countries Automatically Changes Tax Residency

Physically moving from New Zealand to Australia does not by itself answer every tax residency question.

Ignoring Continuing NZ Income

You may continue to have New Zealand tax obligations after moving overseas if you retain New Zealand-source income or assets.

Forgetting Overseas Investments

Australian shares, property, bank accounts and business interests should be reviewed when your tax residency changes.

Assuming the Double Tax Agreement Means You Pay No Tax

The treaty provides rules for cross-border taxation, but the actual outcome depends on your residency, income type and circumstances.

Using the Wrong Residency Date

The date your tax residency changes can affect which income needs to be reported and which tax rules apply.

When Should You Get NZ–Australia Tax Advice?

Ideally, review your tax position before moving between New Zealand and Australia.

Early planning can help identify issues involving:

• Tax residency
• NZ or Australian property
• Shares and investments
• Employment income
• Business interests
• Foreign income
• Double taxation
• Foreign tax credits

This can be particularly important for business owners, investors, executives, contractors and individuals who maintain significant financial connections in both countries.

Cross-Border Tax Advice From DFK Orb360 O’Halloran

DFK Orb360 O’Halloran provides accounting, tax and business advisory support for individuals and businesses with New Zealand and international tax considerations.

Our team can help you understand the New Zealand side of your tax position when moving between NZ and Australia, including overseas income, property, investments and business interests.

We support clients in Auckland, Wellington and across New Zealand.

View DFK Orb360 O’Halloran locations in Auckland and Wellington

People Also Ask: NZ Australia Tax Residency

Do I pay tax in New Zealand if I move to Australia?

It depends on your New Zealand tax residency and whether you continue to earn New Zealand-source income. Moving to Australia does not automatically remove all New Zealand tax obligations.

Can I be a tax resident of both NZ and Australia?

Yes. You can potentially satisfy the domestic tax residency rules of both countries. The NZ–Australia Double Tax Agreement may then become relevant when determining treaty residence.

What happens to my NZ tax residency when I move to Australia?

You need to determine whether and when you cease to be a New Zealand tax resident under New Zealand’s domestic rules. Your permanent place of abode and period of absence can be relevant.

Does Australia tax NZ income?

If you become an Australian tax resident, Australian tax rules may apply to your worldwide income, subject to the relevant domestic and treaty rules. Certain NZ-source income may also remain taxable in New Zealand.

Does NZ tax Australian income?

New Zealand tax residents generally need to consider worldwide income, including applicable Australian income. The exact treatment depends on the income type and relevant tax rules.

How does the NZ Australia Double Tax Agreement work?

The NZ–Australia Double Tax Agreement provides rules for dealing with certain cross-border taxation issues, including treaty residence and the allocation of taxing rights for specified types of income.

Can I claim a foreign tax credit for Australian tax paid?

A New Zealand tax resident may generally be able to claim a foreign tax credit where Australian tax has been paid on income that is also taxable in New Zealand, subject to applicable rules and limits.

Do I need to pay tax on my NZ property after moving to Australia?

You may continue to have New Zealand tax obligations relating to New Zealand property after moving to Australia. Australian tax treatment may also need to be considered after you become an Australian tax resident.

Should I get tax advice before moving between NZ and Australia?

Professional advice can help you establish your residency position and review property, investments, employment income, business interests and potential double taxation before your move.

Official Tax Resources for NZ and Australia

• Inland Revenue – Tax Residency for Individuals
• Inland Revenue – Leaving New Zealand
• Inland Revenue – NZ–Australia Tax Treaty
• Australian Taxation Office – Tax Residency

Final Thoughts: Moving Between NZ and Australia

Moving between NZ and Australia can have tax consequences that continue beyond the date you physically relocate.

The key steps are to establish your tax residency, identify the income and assets you retain in each country, understand how the NZ–Australia Double Tax Agreement applies and consider whether foreign tax credits may be available.

If you are planning to move from New Zealand to Australia, move from Australia to New Zealand, or maintain income and assets in both countries, obtaining professional advice early can help you make informed decisions.

Need help with your NZ–Australia tax position?

Contact DFK Orb360 O’Halloran

Disclaimer: This article is general educational information and does not constitute personal tax, financial or legal advice. Tax residency, Double Tax Agreement and foreign tax credit outcomes depend on individual circumstances. New Zealand and Australian tax rules may change, so obtain professional advice for your specific situation.

Reviewed: September 2026