Stablecoin Cards Still Rely on Visa and Mastercard for Merchant Acceptance

Stablecoins can move globally, settle 24/7 and avoid many delays associated with bank transfers. So why does a card funded with USDC still say Visa or Mastercard?

Because stablecoins and card networks solve different problems.

Stablecoins move value between wallets. Visa and Mastercard provide merchant acceptance, authorization, fraud controls, disputes and connections to banks and payment processors worldwide.

That is why stablecoin cards are developing less as replacements for card networks and more as a new funding and settlement layer underneath them.

Visa said stablecoin-linked cards processed about $5.2 billion during 2025, up 319% year over year. Crypto-card spending has also accelerated, with monthly volumes reaching roughly $600 million as adoption expanded.

Suppose a user holds 100 USDC and spends $20 at a restaurant.

The transaction may work like this:

USDC wallet → card issuer → Visa/Mastercard → merchant bank → merchant

The card provider checks the customer's balance, reserves or converts the required stablecoins and sends the payment through the conventional card network.

The restaurant does not need a crypto wallet or blockchain integration. It can receive payment through the same infrastructure it already uses.

Visa explains that stablecoin-card programs can verify wallet balances, reserve funds and convert them when necessary while keeping the merchant experience largely unchanged through its stablecoin card infrastructure.

That ability to hide blockchain complexity is one of the main reasons card networks still matter.

Sending USDC directly between wallets can be faster than traditional payments. But direct payments only work if both sides are prepared to transact onchain.

Retail payments require much more than moving money.

Card networks handle transaction routing, merchant identification, currency conversion, refunds, fraud monitoring and chargebacks. Replacing that system would require merchants worldwide to adopt entirely new payment infrastructure.

Stablecoin cards avoid that problem.

The front end stays familiar: tap a card anywhere the network is accepted.

The back end changes: stablecoins can fund the purchase and increasingly settle obligations between financial institutions.

Rain, for example, has used USDC to support seven-day settlement for Visa card programs, showing how onchain cards can combine blockchain liquidity with traditional acceptance.

This helps explain why stablecoins and cards can grow together rather than compete directly.

The relationship is becoming more important because card networks are beginning to use stablecoins themselves.

Mastercard has expanded stablecoin settlement, including assets such as USDC, PYUSD and RLUSD, and is moving toward weekend and intraday settlement. Its stablecoin strategy shows that blockchain is increasingly becoming part of the card-network backend.

Visa has taken a similar approach by enabling USDC settlement for financial institutions, including through Solana. Its USDC settlement initiatives show that stablecoins can become another form of money flowing through Visa infrastructure rather than replacing Visa itself.

The real competition is therefore over which layer captures the economics.

Stablecoin issuers can earn revenue from reserves backing digital dollars, while banks risk losing deposits and some payment revenue. But Visa and Mastercard have a strong advantage: they do not necessarily care whether consumers hold bank deposits, USDC or another digital dollar.

They mainly need the transaction to continue flowing through their networks.

Stablecoins may become the money and settlement rail.

Visa and Mastercard can remain the acceptance and orchestration layer connecting that money to everyday commerce.