PayID, BPAY or card: what it really costs to get AUD onto an exchange

Why this gets overlooked

Exchange marketing competes on trading fees, because that is the number people compare. The result is that an investor will spend an hour deciding between a platform charging 0.6% and one charging 0.1%, then fund the account with a debit card and pay several percent for the privilege.

On a $5,000 buy, the difference between a 0.6% and a 0.1% trading fee is $25. A card surcharge at 2% on the same $5,000 is $100. The deposit decision was four times more consequential than the one that got all the attention.

The methods, ranked by what they actually cost

PayID — free, instant, and the default answer

PayID runs on the New Payments Platform, Australia's real-time payments infrastructure. Transfers clear in seconds rather than days, and every major Australian exchange offers it without a deposit fee.

The mechanics are simple: the exchange gives you a PayID identifier, you add it as a payee in your banking app, and you transfer. The money typically appears in your exchange account before you have closed the app.

Two practical notes. Your bank may impose its own daily limit on NPP transfers, which is a bank setting rather than an exchange one. And some banks apply extra friction to first-time transfers to crypto platforms — occasionally a delay, occasionally a warning screen, occasionally a phone call. That is a bank policy decision, not a sign anything is wrong with the exchange.

Bank transfer — free, but slower

Standard EFT to the exchange's bank account is generally free. Where it used to take one to two business days, most transfers now clear same-day or faster because the underlying rails have moved to NPP anyway.

Its main remaining use is transfers above your PayID limit. If you are moving a large sum, this is often the practical route.

BPAY — free, but genuinely slow

BPAY sits in an awkward position. It is normally free, but settlement of one to three business days is a long time to be out of the market if you are buying into a specific price.

It is worth knowing about mainly as a fallback when other methods are unavailable to you.

Debit and credit card — instant and expensive

Card deposits are the fastest way to turn a good trade into a mediocre one. Surcharges in the range of two to four percent are typical across the Australian market, and they are charged on the deposit amount before you have bought anything.

There is a second problem with credit cards specifically. Many Australian card issuers treat crypto purchases as cash advances, which means interest accrues immediately at the cash advance rate with no interest-free period, plus a cash advance fee from your bank on top of the exchange's surcharge. Two separate charges from two separate institutions on the same transaction.

POLi — being retired

POLi was a common option on Australian exchanges for years, working by logging into your internet banking on your behalf. It has been progressively phased out, and its security model — handing your banking credentials to a third party — was always contentious. If you see it offered, PayID is the better choice regardless.

Getting money back out

Withdrawal costs get even less attention than deposits, and they matter for the same reason.

AUD withdrawals to an Australian bank account are typically free on the major local exchanges, usually landing same or next business day. That is worth checking before you commit to a platform, because a withdrawal fee applies every time you take money off the exchange.

Crypto withdrawals are a separate matter entirely. Sending Bitcoin or Ethereum off-platform incurs a network fee that varies with congestion, and some exchanges add a margin on top. If your plan is to move holdings to a hardware wallet, the withdrawal fee schedule is a genuine selection criterion — and one almost nobody checks before signing up.

The full cost of a trade

Adding it up properly, buying crypto in Australia involves as many as four separate costs:

• Deposit fee — zero via PayID, potentially several percent via card
• Trading fee — the headline number, typically 0.1% to 1%
• Spread — the gap between the price you are shown and the underlying market price, which is where instant-buy products make much of their margin
• Withdrawal fee — when you eventually move the asset or the cash

A platform advertising a low trading fee can easily be more expensive all-in than one with a higher headline rate but tighter spreads. This is exactly why our lowest-fee comparison looks at total cost rather than the advertised percentage.

What we would actually do

Fund with PayID. Use the order-book or market product rather than instant buy where the exchange offers both, because the spread on instant-buy products is usually the largest hidden cost in the chain. Withdraw AUD to your bank rather than leaving idle cash sitting on an exchange. Check the crypto withdrawal fee before you need it rather than after.

None of that is complicated, and together it usually saves more than switching platforms would.

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