A crypto tax calculator estimates your Australian capital gains and losses, and any ordinary income from rewards, by converting each transaction into Australian dollars and applying the tax rules to those amounts. It is only as good as the records you give it. A missing wallet, a wrong cost base or a transfer that was really a swap will throw the result out.

The Never Lose Interest calculator sits with this explainer. The broader rules are in the crypto tax in Australia guide. Transfers between your own wallets, and the more involved DeFi rules, have their own pages: crypto wallet transfers and tax and staking and DeFi tax. From 1 July 2027, the CGT discount is also changing, which is covered in CGT old versus new rules.

This is general information only. It is not personal advice or a tax assessment, and it does not take into account your objectives, financial situation or needs. The ATO works out your tax when you lodge.

What does a crypto tax calculator do?

For each disposal, it compares capital proceeds with the cost base, both in Australian dollars.

A disposal includes selling crypto for Australian dollars or another fiat currency, swapping one crypto asset for another, gifting it, or spending it on goods or services. You have a CGT obligation even if you use the proceeds to buy more crypto, and even if you never convert them to Australian dollars.

The cost base starts with what you paid to acquire the asset, plus certain incidental costs of acquiring, holding and disposing of it. If you bought with Australian dollars, that amount forms part of the cost base. If you acquired the asset by swapping another crypto asset, the cost base is the Australian dollar market value at the time of that earlier swap, plus certain fees.

The ATO's 2026 tax-time guidance walks through this with a worked example. Usha bought 8,000 PZT for $5,500 and paid $5 brokerage, so her cost base was $5,505. A few days later she exchanged the PZT for 2 CAB, then worth $5,600. Her capital gain was $95. She was not eligible for a discount or exemption, because she had not held the asset for at least 12 months. When she later exchanged the 2 CAB for 0.1 BAT, the cost base of the CAB started at $5,600, plus $10 brokerage, and the proceeds were the $7,000 market value of the BAT, for a $1,390 gain.

A calculator has to repeat that exercise for every parcel you dispose of in the year, then:

  • add the capital gains
  • subtract current-year capital losses and any net capital losses carried forward
  • apply the CGT discount, if you are entitled to it, or, for later years, the 2027 indexation and minimum-tax rules
  • separately add any ordinary income, such as staking rewards, at their Australian dollar value when received

Net capital losses cannot be deducted against salary or wages. They can be carried forward and used against capital gains in later years. The calculator should show a carried-forward loss, not hide it.

Which figures do I need to enter?

You need, for each acquisition and disposal:

  • the date and time, because market value and the 12-month holding test both depend on timing
  • the quantity and the type of crypto asset
  • the Australian dollar value, or enough information to work it out
  • fees, and whether they were paid in Australian dollars or in crypto
  • the wallet or exchange, so you can match transfers and avoid counting a move between your own wallets as a sale

From 1 January 2020, the ATO has used Reserve Bank of Australia exchange rates where they are available. For currencies the Reserve Bank does not list, it says you may use any reasonable externally sourced rate. A calculator should say which rate source it uses, and you should keep a copy of the rate you relied on.

Each parcel is a separate CGT asset. If you bought the same token at different times and prices, you need records that identify the parcel you disposed of. That identification sets both the cost base and whether you have held that parcel for at least 12 months. The ATO has not published a crypto-specific parcel method. For identical shares that cannot be individually distinguished, Taxation Determination TD 33 says you decide which parcels are being disposed of and keep records that support the decision, and that first-in, first-out (FIFO) has been accepted as a reasonable basis. Average cost is generally not acceptable, except for identical assets acquired on the same day.

Many calculators default to FIFO. That can be a reasonable basis if you use it consistently and keep records that support it. Do not let the software invent a blended average cost across purchases made on different days. If you choose a particular parcel, keep the record that shows that choice.

What should a calculator not treat as a disposal?

Moving crypto from a wallet you own to another wallet you own is not a disposal, as long as you keep ownership, and it does not need to be reported. A calculator that treats every outgoing transfer as a sale will overstate your gains and your turnover.

If your holding falls because a network fee was paid in that crypto, the ATO says that fee is a disposal and can have CGT consequences. Transaction fees paid in fiat currency can instead be included in the cost base of the asset you disposed of. The calculator needs to distinguish those two fee types.

Wrapping, depositing into a liquidity pool, and many DeFi "lending" arrangements are not mere transfers. The ATO treats them as CGT events. A standard calculator may not classify them correctly unless you map the transactions yourself. See the staking and DeFi tax guide.

How do the 12-month discount and the 2027 rules fit in?

Under the current rules, individuals, trusts and partnerships that hold a CGT asset for at least 12 months may reduce a capital gain by 50% before it is added to taxable income. Companies do not get that discount. The 12 months is counted against the particular parcel you disposed of.

From 1 July 2027, the 50% discount is replaced, for gains that accrue from that date, with cost base indexation and a 30% minimum tax on real gains. Those changes are law. They apply to CGT assets generally, including shares and property, when held by individuals, trusts and partnerships for at least 12 months. Crypto held as an investment is generally a CGT asset, so you should plan on the new settings applying to post-1 July 2027 gains unless official ATO guidance later says otherwise.

A calculator that still applies a flat 50% discount to a gain realised after 1 July 2027, without splitting the pre- and post-change portions, will be wrong for assets you already hold. The CGT old versus new rules guide explains the deemed sale and reacquisition on 30 June 2027, and the need for a market value at that date.

What else can throw the result out?

  • Income from staking, DeFi rewards or certain airdrops is ordinary income, not a capital gain, and is usually declared as other income. The market value at the time you receive the tokens also becomes their cost base.
  • The personal use asset exception is narrow. Holding crypto as an investment, and later spending some of it, does not make it a personal use asset. A calculator toggle that marks everything as personal use will understate tax.
  • If you are carrying on a business of crypto trading, the income tax rules for business income can apply instead of, or as well as, the CGT rules. A standard investor calculator is not built for that.
  • Lost exchanges and incomplete CSV files are common. The ATO tells people to export transaction history regularly, because exchanges can close and accounts can be lost. If you cannot reconstruct a cost base, you may overstate a gain or be unable to support a loss.
  • The ATO collects data from crypto platforms and matches it with tax returns. Activity on an Australian-facing platform can be visible to the ATO, and you still have to report disposals that happen off-platform or in self-hosted wallets.

You report capital gains and losses at the CGT labels on your tax return. If you are reporting over $10,000 in capital gains and complete a CGT schedule, crypto is reported with other CGT assets and events. The ATO also has its own CGT calculator and record-keeping tool.

Frequently asked questions

Do I only pay tax when I cash out to Australian dollars?

No. Swapping one crypto asset for another is a disposal. So is spending crypto, or gifting it. Cashing out is only one of the events that can trigger CGT.

Can I use a foreign calculator and convert the result at year end?

You need Australian dollar values at the time of each transaction, not a single year-end conversion of a foreign tax figure. Foreign software may also apply another country's parcel methods or exemptions that do not apply here.

What if the calculator's result differs from my exchange's tax report?

Exchange reports often miss self-hosted wallets, off-platform swaps, on-chain fees and DeFi activity. They can also treat a withdrawal to your own wallet as a sale. Reconcile the report against your own records before you lodge.

Can I claim a loss if the price fell but I did not sell?

No. A fall in value is not a capital loss until a CGT event happens, such as a sale or swap. Unrealised losses do not go on the return.

Does the calculator replace my tax return?

No. It is a working tool. You still have to lodge, report the right labels, and keep records for at least five years after you dispose of the asset.

General information warning

This article, and the Never Lose Interest crypto tax calculator, are general information only. They are not personal advice, tax advice or a calculation of your notice of assessment. They do not take into account your objectives, financial situation or needs. The 2027 CGT changes are law, but some implementation details, and some DeFi classifications, can still depend on official guidance and on the facts of each protocol. Consider speaking with a registered tax agent before you lodge a return that includes material crypto activity.

Sources

Last reviewed: November 2026.