Cash-Only to Cards: The Rules That Start Applying

Card minimums: the number is USD 10, and it is credit only

Two sources say the same thing and both are worth knowing. Federal law at 15 U.S.C. 1693o-2(b)(3) permits a minimum dollar value for credit card acceptance. Visa's rule spells out the boundaries: in the US region or a US territory, a merchant must not establish a minimum transaction amount as a condition for honouring a card, except for a transaction conducted with a credit card issued in the US region or a US territory; the minimum must not be greater than USD 10 and must not be discriminatory between issuers or between Visa and another payment network. Read the exception carefully, because it is where mistakes happen. The minimum can apply only to credit, not to debit, and it cannot be higher for one brand than another. A sign reading "$10 card minimum" is, strictly, wrong on the debit half — "$10 minimum on credit cards" is the accurate version.

Keeping a cash price is expressly permitted — subject to state law

This is the reassurance most cash-only owners are looking for, and the card rules give it plainly. Visa's Core Rules say a US merchant may request or encourage a cardholder to use a means of payment other than a Visa card, and lists permitted methods including offering an immediate discount from the merchant's list, stated or standard price, a rebate, or a free or discounted product or service; expressing a preference; promoting a payment method through posted information or through the size, prominence or sequencing of payment choices; and communicating the reasonably estimated or actual costs incurred on different payment types. Visa separately requires acquirers not to adopt, maintain or enforce any rule or agreement that restrains merchants from doing this. The whole permission carries one qualifier: "Except where prohibited by applicable laws or regulations." That qualifier is the entire ballgame, because a discount off a posted price and a surcharge added to it are treated very differently by state law even when the arithmetic matches. Settle the state question and the signage before you set the prices.

The refund policy you never had to write down

A cash-only shop can operate for years on a handwritten "no refunds" note by the till. Card acceptance changes the standard. Visa requires that a merchant restricting the return of goods or cancellation of services clearly disclose its return, refund and cancellation policies: for card-present transactions, at the point of transaction before the cardholder completes the transaction, or on the front of the transaction receipt — and where the disclosure sits on the receipt or in a separate contract, it must be accompanied by a space for the cardholder to indicate acceptance of the policy. For e-commerce, the disclosure belongs in the sequence of pages before final checkout. Return and refund policies are also among the elements the receipt content rules require. This is the single most commonly missed obligation among newly card-accepting merchants, and it is also the cheapest to fix.

Cash across the counter is now a regulated act

Cash-only businesses are used to the drawer being a general-purpose instrument. On a card sale, it is not. Visa's rule states that a merchant must not provide cash to a cardholder unless the merchant provides cash-back or cash-out, or sells foreign currency, and a prepaid card must not be redeemed for cash by a merchant that accepts it. Where you do offer cash-back in the US, the requirements come as a package: it must be authorised online, completed as a retail transaction in a face-to-face environment, contain a PIN, uniquely identify the cash-back portion of the amount, and be processed in your local currency, with a USD 200 cap and debit and prepaid cards only. No credit refund may be processed for the cash-back component. Merchants may set a lower limit than USD 200 if they want to.

Modelling the change without inventing a number

The honest model has three inputs you can estimate and one you cannot. You can estimate the share of sales that moves to card, your expected effective rate, and the reduction in cash handling, banking trips and shrinkage. You cannot reliably estimate the sales you gain from customers who were not carrying cash — that varies by location, ticket size and trade, and anyone quoting you a percentage uplift for it is guessing. Illustrative example with made-up round numbers, not a projection: a shop doing $40,000 a month that expects 60% to move to card is modelling processing cost on $24,000, not on $40,000, and should run the comparison at both a higher and a lower card share to see how sensitive the answer is. Build the range, not the single figure.

The practical first-90-days list

Settle the state position on cash discounting and surcharging before printing anything. Write the return and refund policy and decide where it is disclosed. Set the item catalogue up so receipts describe what was sold. Configure the card number to truncate to four digits. Decide whether you are offering cash-back, and if so at what limit. Confirm how and when funds reach your bank account, because a cash business is used to same-day and settlement timing is the adjustment owners underestimate most. And get the pricing structure in writing with the effective date on it.