A credit card cash advance can cost more than the purchase rate suggests

The available limit is not a price quote
Business cash pressure has reached the household budget, and an owner considers withdrawing money from a personal credit card to bridge the gap. The advertised purchase rate seems manageable. Before acting, ask the provider about the actual transaction and charges. Available credit does not establish that a cash withdrawal receives the same treatment as an ordinary purchase, or that borrowing is affordable.
Identify the proposed transaction
Explain to the provider whether you intend to withdraw cash or transfer funds, and ask how that transaction would be classified under the account terms. Check the permitted use of the particular card, especially where business expenditure is contemplated. Do not assume a personal product allows every commercial purpose or that moving money between accounts changes its borrowing character.
Understand the cash-advance distinction
Moneysmart describes a cash advance as cash withdrawn from a credit card account, usually attracting a transaction fee and interest from withdrawal until repayment. Confirm the actual rate, fees and calculation with your provider. This general explanation is not a quotation for your account, a recommendation to borrow or a promise that an interest-free purchase period applies.
Source: Moneysmart: Cash advance
Test the proposed repayment realistically
Imagine an owner expecting to repay the advance when a customer invoice clears next week. Ask what the charges and personal repayment position would look like if that receipt is delayed. Keep the customer's payment expectation separate from the card obligation. Do not base an affordable-looking calculation on a repayment date that the business cannot substantiate.
Compare the whole funding problem
Discuss the business shortfall and personal commitments with suitable advisers before adding debt. Identify whether the proposed advance addresses a temporary timing gap or merely shifts an ongoing loss into the household. Avoid repeated withdrawals that hide the growing obligation. Any alternative funding arrangement should be assessed on its actual terms, costs and suitability rather than a headline rate alone.
Keep the transaction visible if it occurs
Retain the provider's explanation and subsequent statement, and query unexpected charges promptly. Record any transfer involving the business accurately with the accountant. The practical decision is whether the specific borrowing can be supported, including its cash-advance treatment, rather than whether there is enough unused credit to complete the transfer today.