Paying the minimum on time is better than missing it, but it does not prevent finance charges or preserve the interest-free period. The minimum payment can include interest, fees and charges before any meaningful reduction of principal.
This guide was reviewed on 27 July 2026 against the HKMA's consumer information and the Code of Banking Practice. Card issuers have different APRs, formulas and charges, so your statement and card agreement remain authoritative.
What does the minimum payment cover?
Under the Code of Banking Practice, the minimum periodic payment should be no less than all interest, fees and charges, plus at least 1% of outstanding principal. An issuer may also apply a specified floor. This is why a payment can be made without the balance falling by the same amount.
Use the HK FinBox Credit Card Minimum Payment Calculator to compare minimum-only repayment with a fixed monthly payment. Its percentage and fixed-floor inputs are planning assumptions, not a reproduction of every issuer's formula.
The HKMA's HK$20,000 illustration
The HKMA illustrates a HK$20,000 balance at a 2.5% monthly rate, equivalent to a 35% APR, with no new transactions or extra fees. Minimum-only repayment takes about 26 years and incurs HK$47,536 of interest. A fixed HK$849 monthly payment clears it in about three years with HK$10,565 of interest.
The exact result varies by issuer, but the mechanism is consistent: as a percentage-based minimum falls, less cash is directed to principal and the payoff period stretches.
Partial repayment can remove the interest-free period
If the statement balance is not paid in full, existing balances and new purchases may incur finance charges. Pause new spending on the card, move recurring payments elsewhere and ask the issuer for the exact amount and date required for full settlement. Cash advances generally accrue interest from the transaction date and also carry a handling fee.
Compare APR, not the promotional monthly rate
APR provides a common annual benchmark that incorporates interest and relevant borrowing fees. A 2.5% monthly credit-card rate can correspond to an APR of about 35% because the annual figure is not simply the monthly number multiplied by twelve. Use the APR Calculator when comparing flat-rate loans or balance-transfer offers, while checking which fees are excluded.
When can balance transfer help?
A lower-APR instalment loan may reduce interest and impose a fixed payoff date. Compare APR, total repayment, early-settlement terms and the risk of rebuilding balances on the old cards. Use the Debt Consolidation Calculator to compare total cost over a realistic payoff period, rather than looking only at the lower monthly instalment.
If minimum payments are already unaffordable, stop adding debt and contact the issuers early. Multiple or severe debts call for qualified independent debt counselling or professional advice.