Decentralised exchanges, explained
Every exchange we list on this site is an AUSTRAC-registered business. A decentralised exchange (DEX) is something different: not a company but a protocol — software running on a blockchain that matches trades directly between users' wallets, with no operator holding your money. That removes some risks and adds others. Here's how they work, who's biggest, and what the rules look like from Australia.
The largest DEXs by trading volume
| # | Protocol | 24h volume | 7-day volume | Blockchains |
|---|---|---|---|---|
| 1 | Uniswap | US$1.92B | US$12.44B | 47 |
| 2 | pump.fun | US$682M | US$4.06B | 4 |
| 3 | PancakeSwap | US$526M | US$4.04B | 12 |
| 4 | Kalshi | US$361M | US$2.78B | 1 |
| 5 | Aerodrome | US$356M | US$2.42B | 1 |
| 6 | Native Swap | US$301M | US$1.17B | 8 |
| 7 | BisonFi | US$149M | US$1.00B | 1 |
| 8 | Orca DEX | US$149M | US$854M | 2 |
| 9 | Meteora DAMM | US$130M | US$806M | 1 |
| 10 | Manifest Trade | US$108M | US$701M | 1 |
Volumes in USD (DEX trading is global) · updated daily · data by DefiLlama. Listing here is information, not endorsement — none of these protocols are AUSTRAC-registered.
DEX vs a regulated Australian exchange
| Registered exchange (e.g. Swyftx) | DEX (e.g. Uniswap) | |
|---|---|---|
| Who holds your crypto | The exchange, until you withdraw | You — trades run from your own wallet |
| Account & ID checks | Sign-up + KYC identity verification | None — connect a wallet and trade |
| Paying with AUD | PayID, Osko, bank transfer, card | No — crypto only; you need coins first |
| What you can trade | A curated list (dozens–hundreds) | Almost any token, including scams |
| If something goes wrong | Support desk, AUSTRAC-registered entity, AFSL regime from 2027 | No company, no support, no recourse |
| Typical costs | Spread + trading fee | Pool fee + network gas + slippage |
What Australians should know first
DEXs are not AUSTRAC-registered and won't hold an AFSL when licensing becomes mandatory for Australian platforms in April 2027. There is no company to complain to, no dispute scheme, and no compensation if a smart contract is exploited. See how Australian regulation works.
Every DEX swap is a CGT event, and heavy DEX use multiplies taxable transactions fast. Wallet-based activity is increasingly visible to data-matching. Tax software that reads wallet addresses is near-essential.
Using a DEX means holding your own keys — which is a skill, not a default. Fake tokens, approval-draining contracts and phishing sites are the common failure modes. Start with our wallet lesson and scams & safety.
FAQ
Are DEXs legal to use in Australia?
Using one is not illegal. But the protocols themselves are not AUSTRAC-registered businesses, sit outside Australia’s consumer-protection framework, and will not be covered by the AFSL licensing regime that applies to Australian platforms from April 2027. You are on your own in a way that is not true on a registered exchange.
Do I still pay tax on DEX trades?
Yes — completely. Every swap on a DEX is a CGT disposal event in the ATO’s eyes, exactly like selling on a regular exchange, and the ATO’s data-matching increasingly covers on-chain activity. DEX trading usually creates more taxable events, not fewer. See our tax hub.
Can I buy crypto with Australian dollars on a DEX?
No. DEXs only trade crypto for crypto. Practically, Australians start on an AUSTRAC-registered exchange to convert AUD into crypto, then move funds to a self-custody wallet if they want to use a DEX.
Why do people use them at all?
Access to tokens that never list on regulated exchanges, no account or ID requirements, and self-custody — your coins never sit with a company that could freeze withdrawals or collapse. The trade-off is that every protection a regulated exchange provides disappears.
General information only, not financial advice. DEXs carry material risks — smart-contract failure, scam tokens and irreversible mistakes — and losses are typically unrecoverable.