Crypto is not a tax-free zone in New Zealand. IRD treats most cryptoassets as property, and the gains you make buying, selling or swapping them are usually taxable income. The key is keeping records good enough to prove what you owe.
Quick answer
In New Zealand there is no general capital-gains tax, but crypto is largely an exception. IRD treats most cryptoassets as property, and because people generally acquire crypto to sell it, the profits are usually taxable income. There is no separate “crypto tax” rate — gains are taxed at your normal income-tax rates.
That means when you sell crypto for NZ dollars, swap one coin for another, or use crypto to buy goods, you may have a taxable event. Losses can often be claimed too, which is why records matter as much for bad years as for good ones.
The detail, in plain English
The starting point is purpose. If you acquired a cryptoasset intending to dispose of it — which IRD takes to be the usual reason people buy crypto — the gain on disposal is income. A “disposal” is broader than just cashing out:
- Selling crypto for NZ dollars or any fiat currency.
- Swapping one cryptoasset for another (yes, crypto-to-crypto trades are disposals).
- Spending crypto to buy goods or services.
- Earning crypto through staking, mining or rewards, which is income when you receive it.
You calculate the gain in NZ dollars at the time of each event, using the value when you acquired the asset and the value when you disposed of it. Because crypto moves fast and trades are frequent, the record-keeping is the hard part, not the rate. A consistent cost method across your holdings, applied the same way each year, keeps the calculation defensible.
Mining and staking deserve a separate mention because they create income at two moments. First, the coins are income at their NZ-dollar value when you receive them. Second, if you later sell or swap those same coins, any further movement in value is a separate gain or loss. Treating the two events as one is a common source of under- or over-reporting.
Losses are the other half of the picture. Because crypto gains are generally income, genuine crypto losses can usually be claimed, which makes accurate records valuable in a bad year as well as a good one. The catch is that you can only stand behind a loss you can actually evidence.
A simple example
Say your crypto activity for the year nets out like this:
| Transaction | NZ$ result |
|---|---|
| Bought 1 coin for | $4,000 |
| Sold that coin later for | $6,500 |
| Taxable gain | $2,500 |
That $2,500 is added to your other income and taxed at your marginal rate. If instead you had swapped the coin for another token worth $6,500, the same $2,500 gain would still be taxable at the moment of the swap, even though no NZ dollars hit your bank account. That “no cash but still taxable” trap is the one that surprises people.
Common mistakes to avoid
- Thinking it is tax-free because there is no CGT. Crypto gains are generally income, not exempt capital gains.
- Ignoring crypto-to-crypto swaps. Trading one coin for another is a taxable disposal even though you never touched fiat.
- Keeping no records. Without dated NZ-dollar values for each transaction, you cannot prove your position, and reconstruction after the fact is painful.
- Forgetting staking and reward income. Coins earned are taxable when received, separate from any later gain on sale.
If you have traded across several exchanges and wallets, do not wait until year-end to pull it together. Exporting transaction history regularly, while access and prices are easy to confirm, turns an otherwise painful reconstruction into a routine task.
Where this fits in your return
Crypto income goes on your IR3 as part of your taxable income for the year. If the gains are large enough, they can push your residual income tax over the line and bring you into provisional tax for the following year, so a strong year can have a tail.
The treatment sits alongside other investment income such as shares and managed funds, though the rules differ.
How Fernway can help
We reconcile your exchange and wallet history into NZ dollars, apply a consistent cost method, separate trading gains from staking income, and present a clean figure for your return. If you have years of untracked activity, we can help reconstruct it and bring you up to date sensibly.
Book a free 20-minute review and we will scope what your crypto position actually looks like.
This is general information only, not personalised tax advice. Your situation may differ, so confirm it with us or check ird.govt.nz.
In plain English: most crypto gains are taxable income in NZ, every sell, swap or spend can be a taxable event, and good records are what keep the bill (and the stress) under control.
This is general information, not personalised tax advice.See our full disclaimer.