Learn why a fee paid in cryptocurrency can appear as a disposal in your Navexa Capital Gains Tax report, even when you haven’t sold crypto for cash.
When A Fee Is A Disposal
A disposal occurs when you give up ownership of an asset. Paying a fee in cryptocurrency uses some of your crypto to pay for a service.
If you pay the fee in fiat currency, such as AUD, the fee payment does not dispose of crypto. If you pay it in crypto, Navexa records the crypto used for the fee and includes the disposal in its capital gains tax (CGT) calculation.
The Australian Taxation Office explains that using crypto to obtain goods or services can be a disposal. Its Tax-smart tips for crypto asset investments (PDF) also identifies crypto used to cover a network fee during a transfer as a disposal with capital gains consequences. See the ATO’s Crypto asset transactions guidance. Both documents current as of September 2026.
Moving crypto between wallets you own is different from spending crypto on a fee. The transfer itself can leave your ownership unchanged, while the crypto used for the fee leaves your ownership.
Why A Gain Or Loss Appears
The fee’s dollar value is not the same as the capital gain or loss from disposing of that crypto.
For example, suppose you pay a fee worth AUD $30 using ETH. Navexa compares that disposal value with the cost base of the ETH used. The cost base is the acquisition cost attributed to those units, including relevant costs and adjustments.
If those ETH units have a cost base of AUD $20, the disposal creates a capital gain of AUD $10 before any applicable CGT discount.
If their cost base is AUD $40, the disposal creates a capital loss of AUD $10.
A fee worth AUD $30 does not automatically create a capital loss of AUD $30. These examples explain the fee-crypto disposal, not the separate treatment of the fee as a transaction cost.
Why The Purchase Date Is Earlier
Navexa matches the crypto used for a fee against an available purchase parcel. A parcel is a specific lot of crypto you acquired in one transaction.
The sale allocation method selected for the holding determines which available parcels Navexa uses. FIFO (First In, First Out) uses the oldest available parcels first.
For example, suppose you:
Buy ETH on 20 January.
Buy more ETH on 4 March and pay the trading fee in ETH.
Use FIFO for that holding’s CGT calculation.
If enough ETH remains in the 20 January parcel, the fee disposal can show Purchase Date: 20 January and Gain Date: 4 March.
The fee was incurred on 4 March. The earlier purchase date identifies the ETH parcel used in the calculation; it does not move the fee to the January trade. A disposal can use more than one parcel if needed.
Check Your Parcel Settings
Your CGT settings control parcel selection for the selected financial year.
Go to Tax Reporting and select Capital Gains Tax.
Select the relevant financial year.
Open the report’s CGT settings.
Check Default Portfolio Sale Allocation Method and any Per-Holding Overrides.
A holding set to Portfolio Default uses the portfolio method. See Capital Gains Tax Settings for the full workflow.
Compare The Fee And Report
Start with the original exchange or wallet record, then compare it with the transaction in Navexa.
From Portfolio, open the cryptocurrency holding and select Trades.
Check the trade date, crypto quantity, fee amount and fee currency against the original record.
Open Tax Reporting → Capital Gains Tax and select the financial year containing the fee payment.
Find the corresponding disposal and review the matched parcel details.
The report columns help explain the result:
Purchase Date — when the matched parcel was acquired.
Gain Date — when the crypto was disposed of.
Sold Quantity — the units from that parcel used in the disposal.
Cost Base — the cost attributed to those units.
Sale Value — the value used for the disposal.
Gain or Loss — the result for that parcel.
See Creating A Capital Gains Tax Report for help reading the report.
If The Fee Looks Wrong
Check the fee quantity and currency first. A fee recorded in ETH behaves differently from a fee recorded in AUD.
Correct an entry only when your exchange or wallet record confirms it is wrong. Don’t change the fee currency or delete a valid transaction just to remove a CGT result.
If the records match but the result is still unexplained, contact Navexa support with the transaction date, fee amount, fee currency and relevant report row.
Ask your accountant or registered tax agent if you need advice about how the tax treatment applies to your circumstances.
Remember, this is general information, not personal financial advice.