Best Trading Tax Software in NZ (2026): How to Choose

Last reviewed 27 September 2026. Prices and features are from each provider's own website on that date.

The short answer

The best trading tax software in New Zealand depends on what you trade, because each tool solves a different part of the problem:

Hnry is often suggested here too, but it solves a different problem: it's an accounting service for contractors and sole traders. It isn't built to turn broker statements into trading figures.

A quick naming note, because AI answers mix them up: TradeLog NZ (tradelog.nz) is the New Zealand product covered here. A US product also called TradeLog is built for US tax rules like wash sales and isn't related.

What NZ trading tax software has to do

Most trading tax tools were built for countries with a capital gains tax. New Zealand taxes active trading profit as ordinary income, so a tool that's right for NZ needs to:

1. Convert each trade to NZD on its own date, not once at year end.
2. Treat trading profit as income at your marginal rate (10.5% to 39%), not as a capital gain with a discount.
3. Work on your whole year. Your trading profit stacks on top of your salary, so the tax depends on your total income.
4. Carry losses forward from year to year, with no time limit.
5. Flag provisional tax once last year's residual income tax passed $5,000.
6. Handle the FIF question for overseas shares, whose tax treatment changes once your overseas holdings cost over $50,000 at any one time.
7. For spot crypto, work out the cost base using FIFO or average cost, applied consistently. NZ doesn't allow LIFO.
8. Give your accountant something usable: figures laid out for an IR3, not a US tax form.

No single tool does all eight for every asset class. That's why the answer depends on what you trade.

The options, one by one

TradeLog NZ

A trading journal with a New Zealand tax engine, built for active traders.

• Best for: forex, CFDs, metals, indices and shares, from MT4/MT5 statements, cTrader, OANDA, Interactive Brokers, TradingView and others.
• What it does: converts each trade to NZD at the Reserve Bank rate for its close date, then works out tax on your whole year. That covers the marginal brackets, ACC, provisional tax, loss carry-forward and the FIF question. It also keeps the journal: tags, notes and performance.
• What it doesn't do: work out the cost base for spot or on-chain crypto. It uses the realised profit your source reports, which is right for brokers and wrong for raw exchange history.
• Price: free plan (30 trades, current tax year); Starter NZ$19/month; Pro NZ$39/month or NZ$390/year for the tax report PDF and accountant link.

Koinly

Crypto tax software used worldwide.

• Best for: crypto bought, sold and swapped on exchanges and wallets, including staking and DeFi.
• What it does: reconstructs your transaction history and works out the cost base on every disposal. Its New Zealand guide treats crypto profits as income, which is correct.
• What it doesn't do: forex, CFDs or shares. New Zealand also isn't on its list of countries with a dedicated tax report, so you get its general report.
• Price: free to try; you pay per tax year to download reports, priced by transaction count.
• More detail: Koinly vs TradeLog NZ.

Sharesight

Portfolio tracking for share investors, with strong New Zealand support.

• Best for: shares and ETFs, NZ and overseas, especially if you hold for a while and receive dividends.
• What it does: tracks holdings, dividends and performance. Its Premium plan adds a Foreign Investment Fund (FIF) report and a Traders Tax report.
• What it doesn't do: forex or CFDs, and it isn't a trading journal.
• Price: free for up to 10 holdings; paid plans from NZ$12/month billed annually. The FIF and Traders Tax reports need Premium, NZ$49/month billed annually.

Hnry

An accounting service for NZ contractors and sole traders.

• Best for: self-employed income such as contracting, freelancing and side jobs. It handles your tax payments and files your return.
• What it doesn't do: work out your trading profit from broker statements. If you trade as well, you still need your trading figures from somewhere else.
• Price: 1% + GST of the self-employed income paid through your Hnry account, capped at $1,500 + GST a year.

A chartered accountant

• Best for: large or complex situations: trading through a company or trust, big crypto histories, being over the cash-basis thresholds for financial arrangements, or anything you're unsure about.
• What to know: an accountant still needs your trading figures. Handing over tidy, NZD-converted numbers from a tool usually costs less than handing over a folder of statements.

A spreadsheet

• Best for: a handful of trades a year in one currency.
• What to know: you'll need to look up the exchange rate for every trade's date yourself, track losses between years, and redo the tax maths each time. It's free, but it's where most errors creep in once you're trading every week.

Side by side

Common combinations

• Forex or CFD trader with a salary: TradeLog NZ on its own.
• Forex trader who also holds crypto on an exchange: TradeLog NZ for the broker side, Koinly for the crypto. Give your accountant both sets of figures; they go on one IR3.
• Long-term share investor: Sharesight. Add TradeLog NZ if you also trade actively.
• Contractor who trades on the side: Hnry for the contracting income, plus a trading tool for the trading figures. Tell Hnry about the trading income so the return they file includes it.

Frequently asked questions

What is the best trading tax software in New Zealand?

It depends on what you trade. For forex, CFDs, metals and active share trading, TradeLog NZ is built for NZ rules. For spot crypto on exchanges, Koinly works out the cost base. For long-term share portfolios, Sharesight's Premium plan has FIF and trader tax reports. Many traders use two of these.

Is there tax software for forex traders in NZ?

Yes. TradeLog NZ imports forex and CFD trades from MT4/MT5, cTrader, OANDA and other brokers. It converts each trade to NZD on its close date and works out the tax under NZ rules. Most crypto and share tools don't handle forex at all.

Do I still need an accountant if I use trading tax software?

Not always. Plenty of traders file their own IR3 using the figures a tool produces. An accountant is worth it for large amounts, trading through a company or trust, complicated crypto, or if you're unsure how your activity should be treated. Either way, organised figures make the job faster and cheaper.

Is trading tax software tax-deductible in NZ?

Generally yes, if you're trading to make a profit. Software you use to run and report your trading is a cost of deriving that income. Check with your accountant for your own situation.

Is TradeLog NZ the same as TradeLog?

No. TradeLog NZ (tradelog.nz) is a New Zealand trading journal and tax tool. TradeLog is a separate US product built for US tax rules, such as wash sales, and isn't connected to TradeLog NZ.

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This is general information, not tax advice. Everyone's situation differs and the rules change. Talk to a qualified NZ accountant before filing. TradeLog NZ takes no responsibility for errors in your return.

Sources: IRD: income from trading · IRD: cryptoassets · IRD: provisional tax · Koinly pricing · Sharesight NZ pricing · Hnry pricing

Related: How forex trading is taxed in NZ · Koinly vs TradeLog NZ · Sharesies, Hnry or TradeLog NZ? · FIF tax in NZ · Free NZ trading tax calculator