What Traders Owe Inland Revenue On Crypto

When a Trade Becomes a Taxable Event

Inland Revenue does not treat cryptocurrency as currency. For most New Zealanders it is either a capital asset held for profit or, more commonly, trading stock. If you buy and sell with intent to profit, the proceeds are taxable income and you file them in your IR3 under "other income". The department has been explicit since its 2020 guidance that disposing of crypto for NZD, swapping one coin for another, or paying for goods and services are all disposals — and each one can trigger a tax liability.

That last point trips people up constantly. Buying a coffee with USDT or paying a freelancer in ETH is not just a payment; it is a sale of the asset at market value, with any gain taxable. So is swapping BTC for SOL, or moving into a stablecoin during a dip. Every one of those moves needs a record of the NZD value at the time, and the easiest reference is the closing price on a reputable exchange, converted at the prevailing rate. A modest trader who turned a $4,000 portfolio into $9,000 across a dozen swaps can be looking at a five-figure tax bill if they never tracked cost bases along the way.

Holding and doing nothing is generally not taxable in itself. The line sits around intent: buy-and-hold with no pattern of trading looks like a capital asset, and New Zealand has no general capital gains tax. But IRD looks at frequency, volume, how you funded the purchases and how long you held before deciding. Selling within weeks, trading on leverage, or running dozens of trades a year reads as a business, and business income is taxed at your marginal rate — 33% or 39% for higher earners.

What the 2025 Rules Changed

The OECD crypto-asset reporting framework, which New Zealand committed to, means exchanges will report customer balances and transactions to IRD from 2026 for the 2025 year onward. The era of untraceable offshore trades is closing. If you hold accounts on overseas platforms, assume the data will land on a desk in Wellington.

Records You Need to Keep From Day One

The single biggest mistake is not keeping a cost basis. IRD accepts reasonable methods — FIFO and weighted average are both used — but you must apply one consistently. Without records, you cannot prove what you paid, and the department will assess on the assumption that the whole proceeds figure is income.

Keep a spreadsheet or use portfolio software that logs date, exchange, coin, quantity, NZD price at the time, fees, and the purpose of the transaction. Screenshot the order confirmations for anything large. New Zealand's GST does not apply to crypto trading as a financial service, which is one mercy, but the income tax exposure is real and assessed per tax year ending 31 March. Set aside a percentage of every realised gain as you go — 33% is a sensible buffer for most traders — rather than facing a bill in July with no cash.

If you earned crypto as payment for work, the value on the day you received it is income, and that figure becomes your cost basis for any later sale. Miners and stakers have the same treatment: rewards are income at receipt, then disposals are separately assessable. A hobby miner running a single rig in a garage in Hamilton is still generating income in IRD's eyes.

Overseas Holdings and the FIF Question

Holdings in foreign crypto providers can raise the foreign investment fund rules once your total cost exceeds NZD 50,000. Most crypto is not a "foreign company" in the ordinary sense, and the treatment of exchange-held balances is genuinely murky — which is exactly why people get advice. If you have significant sums on offshore platforms, document where the assets are actually held and who controls them, because custody risk and tax risk sit side by side. Exchange collapses have cost New Zealand investors real money before, and an unrecoverable balance is a poor defence against an assessment.

Watch out for wrapped tokens, yield products and anything paying interest in kind. These are often treated as income on receipt, adding a second layer of reporting on top of the disposal rules. A yield farm paying 12% sounds attractive until it is taxed as income on an asset that has halved in price.

Five Habits That Keep the Bill Manageable

Trade less than you think you need to. Every swap is a taxable event, and passive holding usually means no tax until you finally sell. Use one exchange as your primary account so the reporting is consolidated and easy to export. Keep the NZD value of every acquisition, including airdrops and forks, because they are income on receipt. Separate your trading wallet from your long-term cold storage so you can see what you actually realised. And if your turnover is climbing past a few tens of thousands, pay an accountant with crypto experience before the year ends, not after — restructuring the timing of a sale in March is far cheaper than arguing about it in October.