2. Blockchain Network Fees Are Separate From Trading Fees

A blockchain network fee relates to processing a transaction on the network.

Buying crypto within a custodial platform does not necessarily involve a separate on-chain transaction for each customer purchase. Transferring crypto to an external wallet may involve one.

The network fee structure depends on the blockchain.

Bitcoin’s guidance explains that fees depend on transaction data size rather than simply the monetary value transferred. Sending a larger amount does not, by itself, mean paying a proportionally larger network fee.

A platform may apply its own withdrawal charge rather than passing through the exact network fee. Confirm which charge you are reviewing.

A Simple Network-Fee Example

Suppose a transfer has an illustrative network cost equivalent to A$4.

For a A$40 transfer:

A$4 ÷ A$40 × 100 = 10%.

For a A$400 transfer:

A$4 ÷ A$400 × 100 = 1%.

The same charge has a greater proportional impact on the smaller transfer.

Actual fees vary. These examples assume the network cost remains unchanged and exclude platform charges.

3. Ethereum Gas Fees Depend on the Transaction

Ethereum uses gas to measure the computational work involved in processing transactions.

Sending ETH and interacting with a smart contract can require different amounts of gas. The cost also depends on the applicable price per unit of gas.

Ethereum’s documentation explains that transaction fees are based on gas used and the price per unit, with fees paid in ETH. A transaction that executes but fails can still consume gas and incur a charge.

Review the estimated fee before approving a wallet transaction. An estimate is not necessarily the final amount charged.

4. Withdrawal Fees Can Change the Amount Received

A crypto withdrawal moves assets from a platform to an external address.

The platform may charge a fixed amount, a variable amount or a fee that depends on the asset and selected network.

Before withdrawing, check:

• The withdrawal fee.
• The minimum withdrawal amount.
• The supported network.
• Whether the fee is deducted from the transfer.
• The amount expected to reach the receiving address.
• Any withdrawal limits or processing conditions.

For example, withdrawing 100 illustrative token units with a deducted fee of 2 units would result in 98 units being sent, assuming no other deductions.

Confirm the platform’s calculation rather than assuming the entered withdrawal amount equals the amount received.

5. Spreads Are a Cost Even When No Separate Fee Appears

The bid–ask spread is the difference between the highest available buying price and the lowest available selling price.

Moneysmart defines the spread as the difference between bid and ask prices for shares or other assets.

For example:

Buying price: A$101.

Selling price: A$99.

Difference: A$2.

Buying at A$101 and immediately selling at A$99 would produce a A$2 loss per unit before separate fees, assuming those prices remain available.

Some services provide a quoted price instead of displaying an order book. Ask whether the quote includes a markup, spread or other charge.

A “zero trading fee” statement does not establish that the complete transaction has no cost.

Compare the Amount Received

When comparing purchase options, use the same spending amount and compare the crypto received after applicable charges.

When comparing sales, use the same asset quantity and compare the cash proceeds.

Check quotes at similar times because market prices can change during the comparison.

Also review withdrawal conditions. A favourable purchase quote does not explain the later cost of moving or selling the asset.

6. Deposit and Payment Methods May Have Different Charges

Funding an account can involve costs separate from trading.

Depending on the provider and payment method, charges may arise from:

• Card processing.
• Bank transfers.
• Third-party payment services.
• Foreign-currency conversion.
• The customer’s bank or card issuer.

Check whether a charge comes from the platform or another organisation.

A method with faster processing may have different costs or limits from another available option.

Confirm the amount expected to reach the account before submitting the payment.

7. Currency Conversion Can Add Another Cost

Australian investors may encounter transactions quoted in a currency other than Australian dollars.

Converting AUD into another currency, trading crypto and converting proceeds back into AUD may involve separate costs.

Review:

• The currency used for the quotation.
• The exchange rate applied.
• Any conversion fee.
• Whether a markup is included in the rate.
• Whether another conversion is needed before withdrawal.

Avoid comparing an AUD quote with a foreign-currency quote without accounting for conversion costs.

A clear comparison uses the final AUD amount paid or received.

8. Frequent Transactions Can Accumulate Fees

Repeated transactions can increase total costs even when individual charges appear modest.

Suppose each illustrative A$200 trade attracts a 0.5% fee:

Fee per trade = A$200 × 0.005 = A$1.

For 20 trades:

Total trading fees = 20 × A$1 = A$20.

This excludes spreads, transfers and other charges.

Both purchases and sales may attract fees. Review the complete transaction history rather than looking only at the cost of entering a position.

Transaction frequency should reflect your circumstances and objectives, not simply a desire to generate activity.

9. Fees Increase the Price Needed to Break Even

Buying and selling costs can mean that an asset must rise in value before the transaction produces a positive result.

Consider a simplified example:

• Total initial spending: A$1,000.
• Purchase fee deducted: A$10.
• Amount used to buy the asset: A$990.
• Sale fee: 1% of gross sale proceeds.

If the asset’s value remains unchanged, selling the holding for A$990 before fees produces:

Sale fee = A$990 × 0.01 = A$9.90.

Net proceeds = A$990 − A$9.90 = A$980.10.

To receive A$1,000 after the sale fee:

Required gross proceeds = A$1,000 ÷ 0.99.

Required gross proceeds = approximately A$1,010.10.

Compared with the A$990 initially invested in the asset, that requires an increase of approximately 2.03%.

This example excludes spreads, slippage, withdrawal charges and tax.

10. Network Choice Requires More Than a Fee Comparison

Some assets are available on multiple networks, but transfers must use a network supported by the receiving wallet or platform.

Before sending, confirm:

• The exact asset.
• The sending network.
• The receiving network.
• The destination address.
• Any required memo or destination tag.
• The available balance for applicable fees.

Do not select a network solely because it appears cheaper.

An incompatible transfer may be difficult or impossible to recover. Any proposed transfer route should be checked before approval.

Fee Estimates Can Change Before Confirmation

A fee displayed earlier in the process may differ from the charge shown at final confirmation.

Possible reasons include:

• Changes in network demand.
• A different transaction amount.
• A change in the selected network.
• Expiry of a quoted price.
• Updated platform charges.

Review the final transaction summary.

Confirm the amount paid, fee deducted and expected amount received. Where network settings are adjustable, understand their effect rather than assuming the lowest setting will provide the required timing.

Trading Fees and Network Fees: A Comparison

Both can affect the same transaction journey, but they should not be treated as identical.

<h2>What OptimCoins Users Should Review</h2>

Before using OptimCoins, request or locate the current fee schedule and transaction conditions.

Ask:

• Which trading fees apply?
• Are fees included in or added to the quoted amount?
• Does the quoted price include a spread or markup?
• Which deposit methods are available?
• What charges apply to crypto withdrawals?
• Which networks are supported?
• Are Australian-dollar withdrawals available, and what do they cost?
• Are there minimum charges or transaction limits?
• When can fees change?
• Where can detailed transaction records be obtained?

These questions do not establish that OptimCoins offers every service described.

Confirm the terms for the specific transaction you intend to make.