FIF Tax NZ: The $50,000 Foreign Investment Rule Explained

Q: What is the NZ$50,000 FIF threshold?

As at July 2026, if the total cost of your FIF investments is NZ$50,000 or less, you do not have to use the FIF rules. Below the threshold you are generally taxed only on actual dividends received. Key points people get wrong: - The threshold is measured on cost (what you paid, in NZ dollars), not current market value. A portfolio you bought for $45,000 that grows to $80,000 is still under the threshold. - It applies per person — a couple can hold up to $100,000 of cost jointly ($50,000 each). - Once your total cost exceeds $50,000 at any point in the year, the FIF rules generally apply to the whole portfolio for that year, not just the excess. A change may be coming: Budget 2026 proposed lifting the threshold to $100,000 with effect from the 2026-27 tax year, alongside wider access to the revenue account method (below). As at the 28 May 2026 Inland Revenue policy information sheet these were still proposals before Parliament — check ird.govt.nz for their current status before relying on them.

Q: What is the revenue account method (RAM)?

A new FIF calculation method, the revenue account method, was introduced on 30 March 2026 for recent migrants — broadly, people who became NZ tax resident on or after 1 April 2024. It taxes 70% of gains actually realised on sale, plus dividends received, instead of a deemed annual return. It was designed for migrants holding unlisted foreign shares (such as startup equity) that cannot easily be sold to fund an annual FIF bill, and for US citizens facing double taxation because FDR tax is not creditable against US tax. Budget 2026 proposed extending the RAM to all NZ residents for unlisted foreign shares — again, verify current status on ird.govt.nz.

What is FIF tax in New Zealand?

New Zealand taxes most offshore portfolio investments under the foreign investment fund (FIF) rules — a regime that taxes you on a deemed return from your overseas shares and funds, whether or not you sold anything or received a dividend. It routinely surprises Kiwis who built up US share portfolios on platforms like Sharesies, Hatch or Interactive Brokers without realising a special regime kicks in above a threshold.

This guide covers the rules as at July 2026, verified against Inland Revenue's FIF guidance and the IR461 guide.

What is the NZ$50,000 FIF threshold?

As at July 2026, if the total cost of your FIF investments is NZ$50,000 or less, you do not have to use the FIF rules. Below the threshold you are generally taxed only on actual dividends received. Key points people get wrong:

The threshold is measured on cost (what you paid, in NZ dollars), not current market value. A portfolio you bought for $45,000 that grows to $80,000 is still under the threshold.
It applies per person — a couple can hold up to $100,000 of cost jointly ($50,000 each).
Once your total cost exceeds $50,000 at any point in the year, the FIF rules generally apply to the whole portfolio for that year, not just the excess.

A change may be coming: Budget 2026 proposed lifting the threshold to $100,000 with effect from the 2026-27 tax year, alongside wider access to the revenue account method (below). As at the 28 May 2026 Inland Revenue policy information sheet these were still proposals before Parliament — check ird.govt.nz for their current status before relying on them.

Which investments do the FIF rules cover?

Typically: shares in overseas companies (US, UK, Asian markets), overseas-domiciled ETFs and managed funds, and some foreign superannuation interests. Notable carve-outs include most ASX-listed Australian resident companies (exempt under a specific list Inland Revenue publishes) and investments held through NZ PIE funds — the fund deals with FIF tax internally.

What is the difference between the FDR and CV methods?

Once you are in the FIF regime, individuals mostly choose between two calculation methods each year:

Fair dividend rate (FDR): you are deemed to earn 5% of the opening market value of your portfolio for the year, and pay tax on that. Actual dividends and gains are ignored. In a strong year (portfolio up 20%), FDR is favourable — you are taxed as if you only made 5%.
Comparative value (CV): you are taxed on the actual movement in value across the year, including dividends. In a flat or falling year, CV is favourable — and if your portfolio fell, CV can produce zero FIF income for the year (though FIF losses generally cannot be claimed).

Natural persons (and eligible family trusts) can compare both each year and use whichever gives the lower result. That annual choice is the main piece of FIF housekeeping — it requires opening and closing valuations and a record of purchases, sales and dividends.

What is the revenue account method (RAM)?

A new FIF calculation method, the revenue account method, was introduced on 30 March 2026 for recent migrants — broadly, people who became NZ tax resident on or after 1 April 2024. It taxes 70% of gains actually realised on sale, plus dividends received, instead of a deemed annual return. It was designed for migrants holding unlisted foreign shares (such as startup equity) that cannot easily be sold to fund an annual FIF bill, and for US citizens facing double taxation because FDR tax is not creditable against US tax. Budget 2026 proposed extending the RAM to all NZ residents for unlisted foreign shares — again, verify current status on ird.govt.nz.

Does KiwiSaver pay FIF tax?

Not in a way you ever see. KiwiSaver funds and other NZ PIE funds apply the FIF rules inside the fund and pay tax at your PIR. There is no $50,000 threshold to monitor, no annual method choice, no extra tax return disclosure. This is one of the genuine simplicity advantages of investing offshore through a PIE fund rather than holding foreign shares directly — see our PIE tax guide.

When to get professional advice

FIF is one of the most technical corners of NZ personal tax, and the 2026 changes make professional input more valuable, not less. Strongly consider an accountant experienced in FIF if:

Your foreign holdings are near or above the cost threshold
You hold unlisted foreign shares, employee stock plans, or foreign superannuation
You are a recent migrant or a US citizen weighing the RAM
You have never filed FIF income but should have — voluntary disclosure is far better than being found

An FSPR-registered financial adviser can help with the investment-structure side — direct holdings vs PIE funds. We connect New Zealanders with FSPR-registered advisers — get matched or browse the directory.

This guide is general information, not financial or tax advice. Rules are as at July 2026 per Inland Revenue (ird.govt.nz), with Budget 2026 changes pending at the time of writing. FIF situations are fact-specific — consult an accountant or an FSPR-registered financial adviser.