Key takeaways
- Bullion is high risk to acquirers because of high tickets, thin margins and buyers who dispute when spot prices drop.
- Federal AML program requirements and California secondhand-dealer rules shape how you buy and sell; confirm with counsel.
- Most successful dealers take cards for small orders and use ACH, wires or stablecoins for large ones.
For precious metals dealers, payment processing in San Diego is a study in mismatched incentives. A coin shop in Kearny Mesa or a bullion desk downtown sells a product with a razor-thin margin and a price that changes every minute, to buyers who sometimes decide, when spot drops the next week, that they would rather not have bought. The card networks give those buyers up to several months to dispute. That is why most mainstream processors decline bullion, and why the dealers who thrive here build a payments mix rather than relying on cards alone.
How acquirers see a bullion dealer
Precious metals and coin dealers are classified under an MCC that many acquiring banks restrict. The concerns are concrete: tickets in the thousands, a product that converts easily to cash, first-party fraud where the cardholder receives the goods and disputes anyway, and stolen-card fraud aimed at a merchant whose product is effectively money. Numismatics with collector premiums are viewed somewhat differently from bullion sold near spot, but underwriters group them together until you show them your mix.
The regulatory layer underwriters ask about
Dealers in precious metals, stones and jewels above certain purchase and sales thresholds are required under federal rules to maintain an anti-money-laundering program, and cash transactions over the reporting threshold trigger IRS reporting. On the buying side, California's secondhand dealer laws and local police reporting requirements apply when you purchase from the public, including holding periods and reporting through the state's system. San Diego also has local licensing for secondhand and pawn activity. Underwriters ask for your AML program documentation and your licenses because they are the difference between a business that manages risk and one that hopes. Confirm the current rules with counsel; this is not legal advice.
Structuring card acceptance so it survives
- Cap card transactions at a size you can afford to lose to a dispute, and route larger orders to bank rails.
- Lock the price at order time and state clearly, before payment, that the price is fixed and that market moves are not grounds for refund. Your terms of sale are your best dispute evidence.
- Ship only to the billing address, with signature required and insurance, and keep the delivery confirmation.
- Use address verification, CVV, and fraud screening that flags mismatched shipping, new accounts placing large orders, and velocity patterns.
- Consider 3-D Secure on online orders to shift liability for certain fraud disputes to the issuer.
Cards settle in 1-2 business days. Expect a rolling reserve at approval and pricing that reflects the acquirer's exposure. The networks' monitoring programs apply pressure around a 0.9% to 1% dispute ratio, which on large tickets is a small number of disputes.
ACH, wires and stablecoins for large orders
Most established San Diego dealers move large orders off cards entirely. ACH debits settle in 1-3 business days at a flat cost and carry bank returns rather than card chargebacks; many dealers ship only after the ACH has cleared and the return window risk is acceptable to them. Wires are common for very large orders but are slow and expensive for the buyer. A growing number of dealers add stablecoin payments, which settle instantly to the merchant wallet on Solana and the XRP Ledger, giving a buyer a fast alternative to a wire without the dealer taking dispute risk. Dealers in digital assets should also review California's Digital Financial Assets Law and confirm with counsel what activity requires licensing.
Disputes and the price-drop problem
The characteristic bullion dispute is a buyer who paid $2,400 an ounce and watches spot fall to $2,250. The claim will be "not as described" or "not received." Your defense package is the signed or click-accepted terms fixing the price, the order confirmation, the tracking with signature, and the shipment weight and insurance records. Dealers that keep this package for every order win a high share of disputes; dealers that ship without signature lose almost all of them.
San Diego specifics
The local market includes long-standing coin shops in Kearny Mesa and Clairemont, downtown and La Jolla bullion desks serving high-net-worth buyers, and estate and jewelry buyers in North County. Coin shows and estate sales create in-person volume where chip and tap protect you. Military families from the region's bases are a steady buyer base for small-ticket silver, which is exactly the volume that belongs on cards. Tell your processor about your channel mix; a dealer doing 80% in-person small tickets is a very different risk than one doing 80% online bullion.
Accounting and inventory
Settlement timing across cards, ACH and stablecoins needs to reconcile against an inventory system that tracks cost basis by lot. If your books are in QuickBooks, a processor sync is one-way, from the processor into QuickBooks, and it should carry each rail's settlements separately so your accountant can tie them out.
Precious metals dealers in San Diego who get and keep processing accounts treat cards as a convenience for small orders, bank and stablecoin rails as the backbone for large ones, and their terms of sale as a legal document. That combination is what an acquirer is looking for when it decides whether to say yes.
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