A merchant service fee (MSF) is the total charge a business pays to accept card payments. It is usually quoted as a percentage of each sale, a fixed amount per transaction, or both, and is deducted from settlement or billed monthly.
The fee typically bundles several parts: the interchange fee paid to the card issuer, scheme fees paid to networks such as eftpos, Visa and Mastercard, and the margin kept by the acquirer or payment provider. Rates differ by card type, so a domestic debit tap generally costs less than a credit card or an overseas card.
Operators compare offers using their monthly card turnover and card mix. Providers may quote blended rates, which are one flat percentage, or cost-plus rates, which show the underlying costs and the provider margin separately. Cost-plus statements make it easier to see where savings come from.
Look beyond the headline rate. Check terminal rental, monthly minimums, chargeback fees, settlement timing, early termination charges and whether least-cost routing is included. Regulation of interchange and surcharging in Australia has been changing, so confirm current rules with your provider or the RBA before assuming a rate.
Understanding the MSF matters because card payments are a large share of takings for most venues, and small differences compound across thousands of sales. Reviewing it once a year is sensible housekeeping.