There is a moment where crypto tax stops being a spreadsheet task and becomes a professional one. Recognising it early saves money, because the cost of an accountant reconstructing four years of history is considerably higher than the cost of doing one return properly.
When you probably do not need one
If you bought cryptocurrency on one platform a handful of times, sold once or twice, and can download a complete transaction export, you can handle this yourself. Add up the New Zealand dollar proceeds, subtract the cost base including fees, declare the net as other income in your IR3, and keep the records. Our filing guide walks through it and the calculator gives you the figure.
When you genuinely do
- High transaction volume. Hundreds of trades across multiple platforms is a reconciliation project, not an evening.
- Decentralised finance activity. Liquidity provision, lending, yield farming and wrapped assets raise questions with no settled simple answer.
- Mining or staking at scale. Income on receipt, plus deductions for power and equipment depreciation, plus possible GST considerations.
- Trading that may be a business. Frequency and organisation can change your tax status, with different deductions and obligations.
- Foreign crypto ETFs. Holdings above the NZ$50,000 threshold bring the foreign investment fund rules in, with their own calculation methods. See our ETF page.
- Several undeclared years. A voluntary disclosure is worth doing properly.
- Business activity. Accepting crypto payments, paying staff in crypto, or holding crypto on a company balance sheet.
What to ask before engaging someone
A crypto page on a firm's website tells you about their marketing, not their experience. Ask questions with concrete answers.
| Question | What you are listening for |
|---|---|
| How do you treat a coin-to-coin swap? | An immediate, unhesitating "that is a disposal at market value on the day". Any uncertainty here is disqualifying. |
| Which reconciliation software do you use? | A named product they use routinely, not "we can work with whatever you have". |
| Have you filed a crypto voluntary disclosure? | A yes with a sense of how Inland Revenue handled it. |
| How do you handle transfers between my own wallets? | They should ask you for your addresses before you finish the question. |
| What will this cost and what is included? | A written scope with an estimate and a stated hourly rate for work outside it. |
| Are you a chartered accountant? | Membership of a professional body means a complaints process exists. |
Accountant, adviser, or something else
These are different roles with different rules attached, and the distinction matters legally.
An accountant handles tax compliance: calculating income, preparing returns, managing disclosures, advising on the tax consequences of transactions you have decided to make. That is not regulated financial advice.
A financial adviser gives advice about financial products and investment decisions. In New Zealand that is a regulated activity requiring a licence, and providers must appear on the Financial Service Providers Register. Anyone advising you on what to buy should be checkable there.
A "crypto adviser" who is neither — someone offering portfolio guidance with no licence and no professional body — is offering an opinion at best. The Financial Markets Authority issued more than fifty investment scam warnings in 2025, and unlicensed advisers feature prominently. Check before you engage, not after. Our scams page covers the verification routine.
What it costs
There is no standard price, and firms genuinely differ. As rough orientation: adding a straightforward crypto calculation to an existing return might be a few hundred dollars. A clean single-year reconciliation across two or three platforms, somewhere in the hundreds to low thousands. A multi-year reconstruction with a voluntary disclosure, several thousand and up, depending on how much data survived.
Get a written scope. Ask specifically what happens if the reconciliation turns out to be messier than expected, because it usually does. And ask whether they charge for the software subscription separately.
Reducing tax legitimately
A good accountant can genuinely lower your bill in several ways: making sure allowable costs including trading fees are deducted, applying realised losses correctly against other income, ensuring transfers between your own wallets are not counted as disposals, and considering the timing of disposals relative to tax years and marginal bands.
What nobody can do is make a real profit untaxable. New Zealand's absence of a capital gains tax does not create an exemption — Inland Revenue's position is that cryptoassets acquired with a purpose of disposal produce ordinary income. Any adviser suggesting a structure that makes ordinary crypto trading gains disappear is describing something between wishful thinking and evasion, and both end badly.
Before your first meeting
- Export complete transaction history from every platform and wallet, for every year.
- List your own wallet addresses so internal transfers can be identified.
- Note anything unusual — airdrops, forks, staking, DeFi, crypto received as payment.
- Bring your other income figures, since the marginal rate depends on them.
- Write down your questions, particularly about anything you are unsure was a disposal.
The better prepared you are, the less time they spend on data collection and the more on the judgement calls you are actually paying for.