We are not licensed financial advisers and nothing here is a recommendation. What follows is a description of the structural decisions New Zealanders face when holding cryptoassets over long periods, and the specifically local factors — tax, custody, platform risk — that shape them.
Start with what can go wrong
Cryptoassets have repeatedly fallen seventy percent or more from cycle highs and taken years to recover. That is not a bear case; it is the observed history of the asset class. Any position needs to be small enough that you can watch it happen without being forced to sell into the fall.
Layered on top is a risk that is specifically worse in New Zealand: platform failure. Five platforms serving Kiwis have ceased operating since 2019 — Cryptopia hacked, BitPrime wound down, Dasset liquidated with roughly NZ$6.3 million unaccounted for, Kiwi-Coin de-banked, and Easy Crypto closed after acquisition. There is no deposit guarantee or compensation scheme covering any of it. Our failures page details each.
Those two risks require different answers. Market risk is managed by position size. Platform risk is managed by custody. Confusing them — thinking a small position on an exchange is safe — is a common and expensive error.
Position sizing, framed usefully
The practical test is not a percentage from an article. It is a question: if this position went to zero tomorrow, what would change? If the answer involves your mortgage, your retirement, your children's education or your ability to pay rent, the position is too large regardless of what any allocation model says.
The second test is behavioural. If a seventy percent fall would cause you to sell, you have already sized it wrong, because that fall is a normal event in this asset class rather than an exceptional one.
If you want a considered allocation for your actual circumstances, that is what a licensed financial adviser is for. In New Zealand, providers of regulated financial advice must appear on the Financial Service Providers Register — see our professional help page for the distinction between accountants, advisers, and people who are neither.
Recurring purchases and what they actually do
Buying a fixed New Zealand dollar amount at regular intervals removes the need to time entries. It does not reduce the risk of the asset itself falling — nothing does — but it does remove one decision you are unlikely to make well and eliminates the regret of committing everything the week before a drawdown.
Two practical New Zealand notes. First, use free bank-transfer funding rather than card funding; a two to three percent card margin applied monthly is a meaningful drag over five years. Second, recurring purchases generate a large number of individual acquisition records, each with its own cost base. Confirm your platform exports them cleanly before you accumulate two hundred of them.
| Decision | What it controls | What it does not |
|---|---|---|
| Position size | How much a drawdown hurts | Whether a drawdown happens |
| Purchase cadence | Timing risk on entry | The asset's own volatility |
| Custody | Platform failure risk | Market risk, or your own key handling |
| Funding method | A recurring 2 – 3% drag | Anything about returns |
| Record keeping | Your tax cost and stress in July | Whether tax applies |
The New Zealand tax drag on rebalancing
This is the local factor most often missed. In many countries, holding an asset for a long period reduces or removes tax on the gain. New Zealand has no capital gains tax and no holding-period concession, and Inland Revenue treats cryptoassets as property acquired with a purpose of disposal — so profits are ordinary income at your marginal rate of up to 39%.
The practical consequence is that rebalancing is expensive. Selling one asset to buy another is a disposal, taxed on the gain, even though you never converted to New Zealand dollars. A portfolio strategy that involves frequent rebalancing between cryptoassets incurs a tax cost at every step that a spreadsheet model will not show you.
It also means timing matters relative to the tax year, which runs 1 April to 31 March. A very large disposal can push you into a higher marginal band; splitting it across two tax years may produce a materially different result. Model it with our calculator before you act, and take advice if the sums are significant.
Custody for a long-term position
A holding you intend to keep for years does not belong on an exchange. The trading balance can stay; the position should not. A hardware wallet costs around NZ$130 and removes the risk that a company's failure becomes your loss.
Two things people neglect. Test the recovery process before funding the device — wipe it and restore from your written phrase, so a transcription error surfaces while it costs nothing. And plan for succession: if your executor cannot find and use the backup, the position is lost to your estate. A sealed instruction with your will, describing where the backup is without containing the phrase, solves most of this.
Indirect exposure
Some New Zealanders prefer exposure through funds rather than direct holdings. That is possible through New Zealand-domiciled PIE funds that hold US-listed bitcoin ETFs, or by buying foreign ETFs directly through investing platforms.
The tax treatment differs sharply between those two routes, and foreign holdings above the NZ$50,000 cost threshold bring the foreign investment fund rules into play with their own calculation methods. That is a genuinely different regime, and our ETFs and funds page covers it.
A structure that holds up
- Size it so total loss changes nothing important.
- Fund it free by bank transfer, not by card.
- Buy on a schedule rather than on conviction about timing.
- Move it to self-custody once it is worth more than the device several times over.
- Export records quarterly and keep them somewhere you will still have access in five years.
- Model the tax before any large disposal, including which tax year it lands in.
- Do nothing for long stretches. Most of the damage in this asset class is self-inflicted activity.