The crypto people actually pay with isn't Bitcoin -- it's stablecoins, and the rail they increasingly move on is Solana. On crypto-linked Visa cards, about 72% of card-payment volume now settles in USDT and another ~18% in USDC, according to Spark. That means roughly nine out of every ten crypto-card dollars are already a dollar-pegged stablecoin, not a volatile coin.

A few years ago, "what crypto do people pay with" had a speculative answer: Bitcoin, a memecoin, whatever was pumping. In mid-2026 the honest answer is boring in the best way -- a stable, dollar-denominated balance, spent through a card, most often carried on a fast low-fee chain. This page pulls together the public data on which assets and which chains people actually use to pay, then adds a first-party look at how deposits break down on SolCard. One caveat before the numbers: the cleanest public data comes from crypto-linked card settlement, which captures the card slice well but misses gift cards and direct-to-merchant payments, so treat the shares as directional, not gospel.

When money leaves a crypto wallet to buy something, it overwhelmingly leaves as a stablecoin. Spark puts USDT at about 72% of card-payment volume and USDC at roughly 18%, with the remaining sliver split across smaller dollar tokens and the occasional volatile coin converted at the point of sale.

The reason is simple: you can't price a coffee in an asset that moves 4% between tapping the card and the batch settling overnight. A stablecoin holds its number, so both the shopper and the merchant know exactly what changed hands. That shift shows up in the growth curve, too. Monthly crypto-card spend reached about $656 million in May 2026, up 230% year over year, with cumulative volume through May at roughly $7.8 billion, per Spark. Visa alone processes close to 90% of crypto-card transactions and now runs stablecoin settlement across nine blockchains at a $7 billion annualized rate -- up 50% in a single quarter -- spanning 130-plus stablecoin-linked card programs in 50-plus countries.

The takeaway: "paying with crypto" in 2026 mostly means paying with a digital dollar. Bitcoin is a store of value people hold; stablecoins are the thing they spend. If you want the wider view of where the money goes once it's spent, see our companion piece on what people buy with crypto.

If stablecoins are the what, Solana is increasingly the where. In February 2026, Solana processed about $650 billion in adjusted stablecoin transfer volume -- the largest monthly figure of any blockchain that month, according to Everstake, ahead of Ethereum and Tron despite holding a fraction of their stablecoin supply.

Source: Everstake

That mismatch -- huge volume on a small supply -- is the whole story. Chainstack notes Solana holds only about 4.5% of the ~$306 billion global stablecoin supply, yet its dollars turn over so fast that USDC transfer volume on Solana overtook Ethereum's in late December 2025 and has stayed ahead since. The enabler is cost: a Solana transfer costs a fraction of a cent (Everstake pegs the median around $0.0005) and finalizes in roughly 0.4 seconds. When you're settling a $4 coffee, a $30 sub-cent fee chain wins over a network where gas can cost more than the coffee.

One nuance worth knowing: the dominant stablecoin flips by chain. On Ethereum the default is USDT; on Solana, USDC leads at about 56% of the chain's stablecoin market cap, per Chainstack. So "which stablecoin do people use" genuinely depends on "which chain are they on." For the mechanics of how a Solana payment clears, see our Solana payments guide and how Solana Pay works.

Public card-settlement data captures spending. We can also see the other side of the transaction: funding. Below is how deposits break down on SolCard, as anonymized, aggregate shares over a recent 90-day window (distributions only -- we don't publish dollar volumes).

The funding side mirrors the spending side almost exactly. About 7 in 10 deposits ride the Solana network, and by asset, roughly 55% of deposits arrive as stablecoins (about 31% USDT and 24% USDC across all chains) against about 45% as SOL. On the Solana network specifically, USDC edges out USDT -- the same USDC-leads-on-Solana pattern the market data shows. It's a useful cross-check: two independent datasets, one measuring what leaves the wallet at checkout and one measuring what enters it at top-up, point at the same conclusion. People fund and spend in stablecoins, and they route it through Solana.

Native Bitcoin, notably, barely features in either dataset. That isn't a knock on Bitcoin -- it's the point. BTC is what people hold; a fast stablecoin balance is what they spend.

For everyday spending, less than you'd think. Both target a 1:1 peg to the US dollar, and a well-built crypto card converts whichever one you load into fiat at the register, so the merchant never sees the token. Where the choice actually bites is before the card: the chain you send on. The same USDC costs a fraction of a cent to move on Solana and can cost dollars on Ethereum at busy times, so picking a low-fee chain matters more than picking a specific stablecoin. Availability is the other factor -- USDT has wider reach across chains, while USDC tends to be the deeper, more liquid option on Solana. Load whichever you already hold on whichever supported chain is cheapest; the spend experience is identical.

This is also the direction the whole industry is pointing. On June 30, 2026, a consortium including Visa, Mastercard, Stripe, and 140-plus other firms launched a shared stablecoin standard -- our explainer on Open USD covers what that means for the coins in your wallet.

Stablecoins, by a wide margin. About 72% of crypto-card payment volume settles in USDT and roughly 18% in USDC, according to Spark -- so close to 90% of card spending is in a dollar-pegged stablecoin rather than a volatile coin.

Rarely, at least directly. Bitcoin is overwhelmingly held as an investment, not spent. When someone "pays with Bitcoin" through a card, it's usually converted to a stablecoin or fiat at the point of sale. Volatile coins are a tiny share of actual card-settlement volume.

For spending, they're effectively interchangeable -- both aim to hold $1 and both convert to fiat at checkout. The bigger decision is the network you send on: moving either stablecoin on Solana costs a fraction of a cent, versus potentially dollars on Ethereum. On Solana, USDC is the more dominant stablecoin; across all chains, USDT has wider availability.

For small, frequent purchases, low fees and fast finality matter most, which is why Solana has become the leading rail -- around $0.0005 per transfer and ~0.4-second finality, per Everstake. Solana processed more stablecoin volume than any other chain in February 2026 despite a much smaller supply.

Yes -- with a crypto card, SOL is converted to fiat when you pay, so you can spend it anywhere the card's network is accepted. That said, most users hold SOL and spend a stablecoin balance, since a stable unit of account is easier to budget with day to day.

The data lands on one picture: the crypto people pay with is a dollar-pegged stablecoin, most often carried on Solana. SolCard is built for exactly that -- load USDC, USDT, or SOL (on Solana and other supported chains), and spend it anywhere Visa is accepted, with the conversion handled for you. If you're new to this, start with how to pay with crypto or compare your options in best crypto debit cards. For the wider market picture, see the state of crypto payments in 2026.

• Spark -- Stablecoin Debit Card Market 2026
• Everstake -- USDC on Solana: Stablecoin Volume
• Chainstack -- Stablecoins on Solana in 2026
• SolCard first-party deposit data (aggregate, anonymized, recent 90-day window)