What it charges you to hold
A business card earns its place on the strength of the cost to hold and the cost to use, and those lines often rank the cards differently. Wise lists an annual fee of £0 and a monthly fee of £0, with no annual fee as its stated model, and aims at business and kids customers. Monzo Flex shows an annual fee of £0 and a monthly fee of £0. HSBC Classic Credit Card, aimed at business customers, shows an annual fee of £0 sitting next to a representative rate of 29.9%.
Across the cards here, monthly fees run €0 to €99, so a card with nothing to charge each month is the norm rather than the selling point. For a business, the line that actually moves is the currency charge, because suppliers rarely bill in sterling. Read that before you read the fee.
Know which account each fee belongs to
Comparison breaks down when a debit fee and a credit rate are treated as one price. Wise's card type is debit, and its fee, its cash machine allowance and its currency charge all sit on the same account you would run a business from. Monzo Flex is the awkward case: its card type is debit, its card kind is credit, and it still carries a representative rate of 29%. Its published perks sit alongside that rate: 0% interest over 3 months on purchases of GBP 100 or more, repeatable, 0% interest if you pay in full and No overseas fees (Mastercard exchange rate only). Read the monthly fee and the representative rate as separate lines, then decide which of them your business will actually use.
HSBC Classic Credit Card falls into the same trap. It is a credit product, so the representative rate of 29.9% is the number that matters if the balance is cleared late or not at all, while the annual fee of £0 is only part of what you hand over. Nothing on a credit card substitutes for a debit account when the job is paying a supplier out of operating cash.
Currency costs do more work than the fee
Wise's conversion charge is 0.1% and the account holds 40 currencies, with listed features of multi currency and travel. Monzo Flex shows a conversion charge of 0%, counts 38 currencies and runs on the mastercard network. Across the cards listed, conversion charges run 0% to 6%.
The habit that keeps money in the business is holding balances in the currency you pay in, so the currency count matters as much as the rate. A multi-currency account is worth little if every balance sits in sterling, and a wide currency list is no substitute for a low conversion charge. Settle in the currency of the invoice where the seller allows it, and keep the conversion cost away from routine spending such as software subscriptions and staff travel.
Cash machine withdrawals and everyday control
Cash is still part of a business week, so the allowance is a real line. Wise allows £250 and Monzo Flex £200, while allowances across the cards listed run €0 to €438.48. The HSBC Classic Credit Card entry gives an annual fee and a representative rate but no allowance figure, so treat that as an open question and ask before you lean on the card for takings.
For spending control, Monzo Flex lists virtual card and travel among its features, which lets you put a single supplier payment or a subscription on a separate card that can be cancelled on its own. That separation is worth more to a small business than any headline reward.
Who stands behind the money
Debit card money is your money until it moves, so the licence behind the account deserves the same attention as the fee. Wise's legal entity is Wise Europe SA, and its entries name the National Bank of Belgium with 0713629988, the Bank of Lithuania with PSD_EMI LT_LT_BL_304940980, the Cyprus Securities and Exchange Commission with MiCA CASP 549300ET4IUR6RCZOL84, and a further payment institution entry with PSD_PI BE_NBB!0713629988. A business can check those references against the register entry that matches the entity named on the account.
Monzo Bank Limited is the legal entity behind Monzo Flex, and it holds a Financial Conduct Authority licence, 730427. The HSBC Classic Credit Card entry names neither a regulator nor a protection scheme, so the licence behind a business account there is a question to put to the provider rather than a line you can confirm here.
One distinction matters more than the others: card protection and account protection are not the same thing. The purchase protection in Monzo Flex's perks sits with card purchases, which is a different question from what happens to a balance held in the account. Before moving a float, ask which body holds the balance and how claims are treated.
Support, rewards and daily use
Monzo Flex's rewards type is listed as none, so the value sits in the fees and the currency charge rather than in points. Wise's support channels are email, chat and phone and Monzo Flex's are help centre and chat. Longevity is worth a glance as well: Wise was founded in 2011 and Monzo in 2015, so both are established operations, though a longer history is not the same thing as a wider licence.
The practical test is a payment you cannot afford to lose. Put a small supplier payment through each card, then ask support the same question about holds, limits and disputed transactions. Whichever account gives a clear answer fastest is the one to keep for the payments that matter.
A workable order of comparison
Work the cards in this order: start from the Business debit cards ranking for a shortlist, then check the fee and the account type, then the currency charge, then the cash machine allowance, then the licence behind the money. The reviews carry the detail, starting with the Wise page, the Monzo Flex page and the HSBC Classic Credit Card page.
Where a line is missing, treat it as missing rather than as costless, and ask the provider. Names outside this shortlist, such as Qonto, widen the field to compare against. Keep the same order for every card and the ranking turns into a checklist rather than a list of prices.