Nowhere to Hide: The Taxman Can Now See Your Offshore Wealth

If you hold investments, bank accounts or cryptocurrency overseas, you should assume Inland Revenue knows about them. That is not scaremongering — it is simply how the international tax system now works, and from 1 April 2026 the net has widened again.

How the information flows

New Zealand is one of more than 100 countries signed up to the OECD’s Common Reporting Standard. Under this regime, banks, brokers, fund managers and insurers around the world must identify customers who are tax resident in another country and report their details to their local tax authority, which then automatically passes the information to the customer’s home tax authority every year.

For a New Zealand tax resident with, say, a Hong Kong brokerage account, a Singapore insurance policy with a savings component, or shares held through a custodian in London, that means their name, tax number, account balances, and the interest, dividends and sale proceeds credited each year are being reported to Inland Revenue — automatically, without any request being made. China, Hong Kong, Singapore, the UK, Australia and most major financial centres all participate. Separate arrangements with the United States achieve much the same result there.

What changed this year

Two developments took effect on 1 April 2026.

First, the Common Reporting Standard itself has been expanded and tightened. Indirect crypto investments held through funds and derivatives, certain electronic money products and central bank digital currencies are now reportable, and the due diligence rules financial institutions must follow have been strengthened.

Second, and more significantly, New Zealand has adopted the OECD’s Crypto-Asset Reporting Framework. Crypto exchanges, brokers and trading platforms — both here and in participating countries overseas — must now collect and report their users’ identities, tax residency and transaction details. Inland Revenue will receive annual data on New Zealanders trading through offshore platforms, closing what was previously a major blind spot: most Kiwi crypto activity happens on overseas exchanges.

Inland Revenue is not waiting for the first exchange of that data. It has already identified hundreds of thousands of New Zealand crypto users and billions of dollars of trading activity, and has begun writing to people it knows have traded on exchanges but declared nothing.

What this means in practice

None of this creates new taxes. What it does is make existing obligations enforceable. Income that New Zealand residents have always had to return — and that Inland Revenue can now cross-check against overseas data — includes:

• Income from offshore share portfolios and managed funds under the foreign investment fund (FIF) rules, which can tax a deemed return even where no cash is received

• Attributed income from foreign companies controlled by New Zealand residents, including inherited family companies and offshore holding structures

• Gains in overseas life insurance policies with a savings or investment component

• Profits from selling or swapping crypto-assets — including crypto-to-crypto trades where no cash ever lands in a bank account

New migrants deserve a particular mention. Most foreign income is exempt during the first four years of New Zealand residence under the transitional resident concession. But the data flows from day one. By the time the concession ends, Inland Revenue will typically hold several years of information about a migrant’s offshore wealth — so the first tax return filed after the exemption ends needs to reconcile with what Inland Revenue already knows.

Family trusts should also take note. A trust that holds shares or bonds and uses an outside investment manager can itself be a “financial institution” with its own reporting obligations, and Inland Revenue has been writing to trusts asking why they have not registered.

The safety valve

Where offshore income has been overlooked, a voluntary disclosure made before Inland Revenue comes knocking will generally significantly reduce penalties. Once a letter arrives, that opportunity narrows quickly. If you hold assets offshore — or arrived in New Zealand in recent years with investments still sitting in your former home country — now is the time to review your position with your adviser, not after the data-matching catches up.

At Greenlane CA Limited we specialise in exactly this sort of enquiry. Our team regularly assists clients with foreign investment fund and controlled foreign company disclosures, transitional residency issues, voluntary disclosures and responding to Inland Revenue information requests. If you have received a letter from Inland Revenue, or simply want certainty about your offshore position before one arrives, contact us — we are here to help. Visit www.glca.co.nz to get in touch.

Contact Greenlane CA Limited

• Email: info@glca.co.nz

• Phone: +64 9 522 5182

• Website: www.glca.co.nz

• Address: 97 Great South Road, Greenlane, Auckland 1051

Disclaimer

This article is of a general nature only and does not constitute legal, tax or financial advice. The rules described are complex and their application depends on individual circumstances, and some measures referred to may be subject to change. Readers should not act, or refrain from acting, on the basis of this article without first obtaining professional advice specific to their situation. No responsibility is accepted for any loss arising from reliance on the information contained in this article.