The de minimis cost threshold for New Zealand's Foreign Investment Fund rules doubles from $50,000 to $100,000 from 1 April 2026 — the first increase since 2000.
New Zealand investors holding overseas shares and ETFs will face simpler tax reporting from 1 April 2026, after Budget 2026 confirmed the Foreign Investment Fund (FIF) de minimis threshold will double from $50,000 to $100,000 for the first time in 26 years.
The change was highlighted by tax commentator Terry Baucher in his post-Budget analysis on interest.co.nz. The previous $50,000 threshold had been in place since 2000, meaning many investors whose overseas portfolios had grown substantially over that period were caught by the rules without any relief. Taxpayers with overseas income obligations still need to file a return even when their auto-assessment appears straightforward, per the RNZ guide to this year's tax returns.
What the FIF de minimis threshold actually does
New Zealand's territorial tax system requires residents to pay tax on worldwide income, with some exceptions. The FIF rules exist to prevent people from deferring tax indefinitely by holding offshore investments. When the total cost of all your overseas investments exceeds the de minimis threshold, you must calculate and pay FIF tax annually — regardless of whether you have sold anything.
The de minimis threshold acts as a trigger. If your total overseas investment cost sits below it, the FIF rules do not automatically apply, though other reporting obligations may still apply and dividends received must still be returned as income.
The previous $50,000 limit had not kept pace with asset price growth, particularly in global equity markets. A portfolio built gradually over two decades could quite easily exceed $50,000 even without unusual market moves.
Why $100,000 and what changes
The new $100,000 threshold applies from the start of the 2026–2027 tax year. The measure was described by the Treasury as largely administrative — intended to reduce compliance costs for smaller overseas investors rather than to alter the fundamental structure of the rules.
Importantly, even investors whose portfolios fall below the new threshold can still choose to use the FIF regime voluntarily if it suits their circumstances. The rules do not prevent this opt-in approach.
One practical note from Baucher: if the FIF regime does not apply to your holdings because they fall below the threshold, you still need to return any dividends received as taxable income. The threshold determines whether the FIF calculation rules apply, not whether overseas investment income more generally needs to be declared.
Wider RAM changes for investors
Budget 2026 also included a related change to the Relative Assessed Method (RAM) of calculating FIF liability. Previously, RAM was only available to new residents who arrived after 1 April 2024. From 1 April 2026, all taxpayers will be able to adopt RAM for unlisted securities.
RAM treats 70 percent of realised gains as taxable income, rather than the flat 5 percent rate applied under the Fair Dividend Rate (FDR) method. For investors with unlisted overseas securities — such as private company shares held through overseas investment platforms — this may produce a lower tax bill in situations where gains are modest or where the FDR method would otherwise produce a taxable amount on paper when no actual profit was realised.
A further change allows all New Zealand residents who face double taxation because of citizenship or the right to work in another country to use RAM for their listed shares, regardless of when they became tax resident. This primarily affects migrants from the United States, where citizenship-based taxation can create overlapping tax obligations.
Effective date and what to do next
All of these changes take effect from 1 April 2026, meaning they will apply to the current tax year's calculations. Taxpayers with overseas portfolios in the $50,000–$100,000 range should find their reporting obligations simplify or disappear entirely. Those with larger portfolios may wish to review which FIF calculation method — FDR, Cost Valuation, or RAM — produces the lowest taxable amount for their situation.
The Inland Revenue is expected to release updated guidance and the annual tax bill containing these provisions in August or September 2026.
This article is for general information only and is not personalised financial advice. Seek advice from a licensed financial adviser (registered on the FSPR) for guidance specific to your situation.