According to the Independent Reserve Cryptocurrency Index (IRCI) 2026, 33% of Australians held a crypto asset in 2026, up from 31% in 2025. Among these holders, 21% use crypto for everyday purchases such as online shopping, making network and gas fees a common part of such crypto transactions.
However, paying a network fee in crypto rather than Australian dollars carries its own tax consequences. The Australian Taxation Office (ATO) treats the crypto used to cover that fee as a disposal, producing a capital gain or loss separate from the transaction it supports. This applies whether you’re transferring tokens, swapping on an exchange, or minting a non-fungible token (NFT). Even a fraction of a coin spent on gas still needs its own cost base and market value comparison.
Key Takeaways
- Paying a network or gas fee in crypto is its own taxable event, separate from the transaction itself.
- The gain or loss on the fee depends on what it cost you versus what it was worth when you paid it.
- Even a small fee on a transfer, swap, or non-fungible token (NFT) mint can create a Capital Gains Tax (CGT) event.
- These fee-based gains and losses must be added to your total net capital gain or loss for the year.
How Does The ATO Tax Network Fees Paid In Crypto?
The ATO does not have a rule written specifically for network fees, but its general crypto disposal rules cover them. Whenever you pay a fee using crypto rather than cash, you are disposing of a portion of the tokens you own. Hence, paying a transfer fee in crypto triggers a CGT event. Here’s how different network fee transactions are taxed:
Tax On Gas Fees Paid In Ethereum
Gas fees on Ethereum (ETH) are usually paid in ETH itself, whether you are swapping tokens, minting an NFT, or calling a smart contract. Under the ATO’s general crypto rules, if your crypto holding reduces because you used crypto to cover a fee, that fee is treated as a disposal in its own right. You work out a capital gain or loss by comparing its cost base to its market value at the time of payment, then add this to your other gains for the year.
Tax On Miner Fees To Move Bitcoin
Miner fees on Bitcoin (BTC) work the same way, just with a different network. When you send Bitcoin and pay a fee in BTC to get the transaction confirmed, that fee amount counts as a disposal. Its cost base and market value at the time of payment determine whether you have made a small capital gain or loss on that portion.
Tax On Bridge And Relayer Fees Across Chains
Moving crypto between blockchains often means paying a bridge or relayer fee, usually in the native token of the chain you are sending from. This fee is treated as a disposal in the same way as gas or miner fees, and needs its own cost base and market value comparison, even though the amount involved is usually small.
Tax On Fees Paid When Minting Or Transferring NFTs
Minting or transferring an NFT usually comes with a network fee, paid in ETH or another token depending on the chain. That fee is a disposal of crypto, separate from the NFT itself. The gain or loss on it is worked out the same way as any other fee, using its cost base and value at the time it was spent.
How To Calculate Tax On Crypto Network Fees?
Working out tax on a network fee follows the same cost base and disposal principles as any other crypto transaction, just applied to a much smaller parcel of the asset.
Step 1: Identify The Crypto Spent On The Fee
Note the exact amount of crypto used to pay the fee and the date it was paid. This is the parcel being disposed of, separate from whatever transaction the fee was attached to.
Step 2: Work Out The Cost Base Of That Parcel
Use whichever accounting method you already apply to your other crypto, First In, First Out (FIFO), Last In, First Out (LIFO), Highest In, First Out (HIFO), or average cost, so the fee parcel is priced the same way as the rest of your holdings.
Cost base = Original purchase price of that crypto (per unit) × Amount spent on the fee
Step 3: Work Out The Market Value At The Time of Payment
This is the value the ATO uses to measure the disposal, not the price on the day you originally bought the crypto.
Market value = Price of the crypto in AUD at the exact time the fee was paid
Step 4: Calculate The Capital Gain or Loss
A positive result is a capital gain, a negative result is a capital loss. Network fees are usually small, so these amounts tend to be modest, but the ATO’s data-matching program can still pick them up across a year of frequent transactions.
Capital gain or loss = Market value at time of payment − Cost base
Step 5: Apply The CGT Discount If The Parcel Qualifies
The 50% CGT discount can reduce the gain on the fee portion, but only if that specific cryptocurrency was held for 12 months or more before it was spent.
Discounted gain = Capital gain × 50%
This only applies to gains, never to losses, and only if that exact token paid as the fees meets the 12-month holding requirement, not your holding period for the asset as a whole.
Real- Life Scenario
An ATO Community user _danb77 asked how to treat the network fee charged when withdrawing crypto from an exchange to a private wallet, unsure whether that fee portion counted as a disposal they needed to report.
Assumptions
- 1.00 ETH was originally bought with a total cost base of A$100
- 1.00 ETH was withdrawn from the exchange to a private wallet
- A network fee of 0.01 ETH was deducted during the withdrawal, leaving 0.99 ETH in the wallet
- ETH was worth A$200 per coin at the time of the withdrawal
0.01 ETH went towards the network fee, separate from the 0.99 ETH that arrived in the private wallet.
Step 2: Work Out The Cost Base Of The Fee Portion
The cost base of the fee portion is calculated as a proportion of the original cost base, based on how much ETH the fee used up.
Cost base = (Original cost base ÷ total ETH held) × ETH spent on fee
Cost base = (A$100 ÷ 1.00 ETH) × 0.01 ETH = A$1
Step 3: Work Out The Market Value At The Time of Payment
The market value of the fee portion is based on the ETH price at the exact moment the fee was paid, not the original purchase price.
Market value = Price per ETH at time of payment × ETH spent on fee
Market value = A$200 × 0.01 = A$2
Step 4: Calculate The Capital Gain
The capital gain on the fee portion is the difference between what it was worth when spent and what it originally cost.
Capital gain = Market value at time of payment − Cost base
Capital gain = A$2 − A$1 = A$1
The 0.01 ETH spent on the fee is its own disposal, producing a A$1 capital gain here, separate from the 0.99 ETH sitting in the private wallet. That remaining 0.99 ETH keeps its own cost base and stays untouched for tax purposes until it’s eventually sold, swapped, or spent. So yes, the price movement from A$100 to A$200 does need to be acknowledged, but only for the small fee portion, not for the full 1 ETH withdrawal.
How To Report Network Fee Tax In Australia?
Capital gains or losses from network fees are not reported as a separate line item. They are folded into your total net capital gain or loss for the year and reported through the same CGT process as your other crypto disposals.
Add the Fee's Gain Or Loss To Your CGT Records
Record each fee-triggered disposal alongside your other crypto transactions, noting the cost base, disposal value, and date. Small fee amounts add up across a year of active trading, so consistent record-keeping keeps your total accurate and easier to defend if the ATO ever asks questions about it.
Calculate Your Total Net Capital Gain
Combine the gains and losses from fee disposals with all other capital gains and losses for the financial year to arrive at your net capital gain or loss for the return. If any specific fee-parcel was held for 12 months or more before being spent, the CGT discount can apply to that gain, though this is uncommon since fee payments are usually drawn from crypto acquired more recently.
Report Through myTax Or The Paper Return
If lodging online, go to Personalise return and select “You had Australian interest, or other Australian income or losses from investments or property,” then “Capital gains or losses that are not from a managed fund.”
This opens the section in Prepare return, where you select “Add/Edit” at the Capital gains or losses banner to enter your total current year capital gains and net capital gain, folding in every fee-based disposal alongside your other crypto transactions.
If lodging on paper, use item 18, Capital gains, on the Supplementary tax return. Missing fee disposals is one of the more common crypto tax filing mistakes Australian investors make.
How Can KoinX Help With Network Fee Tax in Australia?
Tracking a handful of large trades is manageable, but network fees are numerous, small, and easy to miss when reconciling capital gains by hand. KoinX is built to catch every one of these fee-based disposals automatically, matching each fee to the wallet and transaction it belongs to and applying your chosen accounting method consistently across the year.
Multiple Accounting Methods
The platform lets you switch between FIFO, LIFO, HIFO, and average cost basis, so the cost base used for fee-triggered disposals matches the method you rely on for your other crypto transactions, keeping every gain and loss consistent across your return.
Buy Sell Report
The Buy Sell Report lists every buy, sell, and swap in one place, including the small crypto amounts spent on network fees, so you can verify that each fee-based disposal has been picked up and priced correctly before you lodge.
Transaction History Report
The Transaction History Report acts as a full ledger of trades, transfers, and fees, giving you the raw data behind every fee-triggered gain or loss without manually tracing gas payments across wallets.
Manually tracking gas fees across dozens of small transactions is easy to get wrong, and missed fee disposals can leave gaps in your reported capital gains. KoinX connects to your wallets and exchanges, picks up every fee-based disposal automatically, and turns the data into a report ready for your tax return. Get started with KoinX and see your full crypto tax position in one place.
Skip the maths on network fees and your reported capital gains understate reality, even if only by small amounts. Over a year of frequent swaps, transfers, or NFT mints, those unreported fee-disposals accumulate, and they sit inside the same transaction data the ATO’s data-matching program already has access to from exchanges and on-chain sources.
The fix isn’t more manual tracking, it’s catching every fee-based disposal at the source. Sign up with KoinX to reconcile fee disposals alongside every other crypto transaction, before they turn into a gap between your return and what the ATO already knows.
Frequently Asked Questions
Do I Still Need To Report A Network Fee If It Results In A Loss?
Yes, capital losses from fee disposals still need to be recorded, even though you won’t pay tax on them directly. A capital loss can offset other capital gains in the same year or be carried forward to reduce gains in future years. Leaving out small losses from fee payments means understating your total losses and potentially paying more tax than necessary.
Can The ATO Actually Track Small Gas Fee Transactions?
The ATO’s crypto asset data-matching program collects transaction data directly from exchanges, which likely captures small transfers and fee payments as part of an investor’s overall activity. While individual gas fees are minor, they add up across a year of active trading or DeFi use, and unreported fee disposals can appear as a discrepancy against data the ATO already holds.
What Records Should I Keep For Crypto Paid As Network Fees?
Keep the date, the amount of crypto spent, its market value in Australian dollars at the time, and the transaction hash if available. This is the same information you would keep for any other crypto disposal. Good records make it straightforward to calculate the cost base and resulting gain or loss on each fee, rather than estimating it later.
