Why investing from NZ is harder than anyone admits

I spent six months convinced I was doing something wrong. My portfolio was up. Markets were up. But somehow, the numbers in my account weren't matching what I was reading about everywhere else. Then I figured it out — and nobody had warned me.

Here's the thing about personal finance content: almost all of it is written for Americans. The platforms they use, the tax rules they cite, the investment accounts they recommend — none of it applies to us. And yet we read it, we get inspired, we open an account and start investing. Then reality bites.

I'm writing this newsletter because I got tired of translating. Every time I read a great piece about ETF investing or portfolio construction, I had to run it through a mental filter: does FIF apply here? Is this platform available in NZ? What does the NZD/USD move do to these returns? It's exhausting, and it's unnecessary. So let's start from the beginning — with the actual landscape for New Zealand investors in 2026.

The currency problem nobody talks about

If you're investing in US equities from New Zealand — and you probably should be, given the relative size of the US market — you are making a currency bet whether you like it or not. Every dollar you put into a US ETF is exposed to NZD/USD movements. When the New Zealand dollar strengthens, your international returns shrink in local currency terms. When it weakens, they expand.

Over the past decade, this has swung both ways by 20% or more. That's not a rounding error. That's the difference between a great year and a flat one, depending entirely on what the currency did, not what your investments did.

You have three choices: invest in unhedged international funds and accept the currency exposure; invest in currency-hedged funds and pay the hedging cost (typically 1–2% per year, which matters enormously over time); or ignore it and hope for the best, which is what most NZ investors quietly do.

There's no universally right answer. But you need to make a deliberate choice, because doing nothing is itself a choice — and an unexamined one.

Advertisement · 728 × 90

FIF: the tax regime that changes everything

The Foreign Investment Fund regime is the single biggest difference between investing in New Zealand and investing almost anywhere else in the developed world. If you hold more than NZD $50,000 in offshore investments, FIF applies — and it means you pay tax on a deemed return of 5% of your portfolio's opening value each year, regardless of whether you actually received any return or sold anything.

What this means practically: a portfolio that's purely international, like a 100% S&P 500 strategy, creates tax drag even in flat years. Many NZ investors respond by blending in NZ and Australian equities through Smartshares, which are PIE funds and taxed differently again. This is the right instinct — but it needs to be intentional, not accidental.

The good news: once you understand FIF, you can plan around it. The bad news: most NZ investors find out about it for the first time at tax time, after the fact.

The KiwiSaver tax rate most people have wrong

Before we get to platforms, there's one more thing — and it's costing a lot of New Zealand investors money right now without them realising. In April 2025, IRD changed the Prescribed Investor Rate thresholds for KiwiSaver and PIE funds. The old thresholds were $14,000, $48,000, and $70,000. They're now $15,600, $53,500, and $78,100.

If your income sits between the old and new thresholds — say you earned $50,000 — you may now qualify for 17.5% instead of 28% on your KiwiSaver returns. Your provider will not update your rate automatically. You have to tell them. And most people haven't.

The platform problem

Let's say you've decided you want to invest in global ETFs. Where do you actually do it? The US platforms — Fidelity, Schwab, Vanguard direct — are largely not available to New Zealand residents. Interactive Brokers works but has a steep learning curve and is overkill for most investors. That leaves a handful of NZ-specific options, each with real trade-offs.

Sharesies is accessible and excellent for beginners, but its fee structure erodes returns at larger portfolio sizes. Hatch is clean and focused on US equities. InvestNow gives you access to managed funds and ETFs including Smartshares with no transaction fees at all — which makes it genuinely compelling for the kind of buy-and-hold ETF investing that the data consistently shows outperforms active management.

None of these platforms is obviously right for everyone. The best one depends on your portfolio size, how actively you want to trade, whether you want managed funds or direct ETF access, and how much you care about the interface versus the fees. We'll cover the full comparison in a future issue — but know that the platform decision is more consequential for NZ investors than it is for almost anyone else.

So why bother?

None of this is to put you off. I invest in international equities, I think most New Zealanders should, and I believe it's one of the most powerful tools available for building long-term wealth from here. The NZ sharemarket is too small and too concentrated in a handful of sectors to rely on exclusively. Global diversification isn't optional if you want genuine exposure to the world's best companies.

But the extra complexity is real. FIF, currency, platforms, PIE funds, the interaction between KiwiSaver and personal investing — these are all things that US-centric financial content will never help you with. That's what this newsletter is for.

Every week, I'll write one piece specifically for the NZ investor. Sometimes it'll be practical — how to set up a specific ETF portfolio, how FIF interacts with PIE tax, how to think about currency hedging over a 20-year horizon. Sometimes it'll be market-facing — what the NZ economic cycle means for your allocations, why the OCR matters to your portfolio even if you don't hold NZ bonds. Always it'll be written with the assumption that you're here, at the bottom of the world, trying to build wealth in a context that most of the world's financial writing simply ignores.

Welcome to The Southern Portfolio. I'm glad you're here.