Crypto Payments in August 2026: What Actually Changed

In August 2026 the two largest card networks turned stablecoin settlement into ordinary payments infrastructure -- Mastercard closed its BVNK acquisition and Visa put stablecoins into Visa Direct -- while the US Treasury published the first proposed rules on who may issue a payment stablecoin under the GENIUS Act. Solana came within five points of a finality halt without one, stablecoin supply edged up, and hack counts hit a 2026 high as losses halved.

This is the first edition of a monthly roundup: card networks, regulation, Solana, stablecoin supply, security, then what our own users did with their cards. Every external figure links to a primary or top-tier source; first-party data is shares and growth rates only.

Mastercard closed BVNK on August 3. The deal, announced in March at up to $1.8 billion including $300 million in contingent payments per Mastercard's investor release, gives Mastercard an in-house platform for holding, moving and converting value across fiat and digital currencies, according to the completion announcement. The use cases Mastercard named were B2B payments, remittances, payouts and settlement, not consumer checkout.

Visa added stablecoin prefunding and payouts to Visa Direct on August 5. Through Zero Hash, eligible Visa Direct clients can prefund and pay out in stablecoins across more than 18 billion cards, accounts and wallets in over 195 countries and territories, per the Zero Hash release. On August 18, CoinDesk reported that Visa had issued a request for proposal for a settlement and over-the-counter partner licensed in the US, Canada, the UK and Singapore, replacing the role BVNK held before Mastercard bought it. On August 26, South Korea's Shinhan Financial Group agreed to pilot stablecoin issuance, remittance, redemption and card settlement on Visa's platform, per CoinDesk.

The pattern is the same on both networks: stablecoins are being wired into the back office, between the network, banks and merchants, rather than into the card in your wallet. We explain the mechanics in how card networks settle in stablecoins.

Kraken launched a US Visa debit card on August 18. The Krak card spends from more than 600 currencies and crypto assets, converted to dollars at the point of sale, with up to 2% back in cash or bitcoin credited at settlement, per Quartz. Kraken says the card already had more than 125,000 cardholders in the UK and Europe; PYMNTS put the figure at 135,000.

Treasury proposed the first GENIUS Act issuer rules on August 17. The proposal implements Section 3 of the Guiding and Establishing National Innovation for U.S. Stablecoins (GENIUS) Act, which governs who may issue, offer or sell a payment stablecoin in the United States. Per Treasury's release, from January 18, 2027 a person generally may not issue a payment stablecoin in the US without a federal or state license, and from July 18, 2028 digital asset service providers generally may not offer or sell payment stablecoins to US persons unless a licensed issuer minted them. Comments are due 60 days after Federal Register publication, which puts the deadline at October 19, 2026. CoinDesk flagged the treatment of foreign issuers as the point to watch. Our GENIUS Act explainer covers what it means if you hold USDC or USDT.

The SEC proposed "Regulation Crypto Assets" on August 18. The proposal would create two registration exemptions for crypto offerings -- up to $5 million over four years, or up to $75 million per 12 months with reporting -- plus a safe harbor under which qualifying crypto assets are not investment contracts. It covers token offerings, not payment stablecoins.

The CLARITY Act is still waiting on the Senate. The Digital Asset Market Clarity Act, a market-structure bill splitting oversight of digital assets between the SEC and the CFTC, cleared a first procedural step on August 8 when Majority Leader John Thune filed a motion to proceed, per CoinDesk. It needs 60 votes, with a cloture vote set for the Senate's return in September.

In Europe, MiCA kept squeezing USDT. Markets in Crypto-Assets (MiCA) is the EU's crypto framework, and Tether has not sought authorization under it, so compliant platforms have been withdrawing USDT from European customers. Multiple trade outlets, including The Paypers, reported that Revolut ended USDT support for EEA customers on August 31; we could not locate a Revolut newsroom post confirming the date.

On August 12 Solana came within 4.5 points of a finality halt. A routing failure at TeraSwitch, a hosting provider used by validators in Europe and Asia, knocked roughly 90 validators offline for about 33 minutes and left 28.83% of staked SOL delinquent, against a halt threshold of 33.34%, per Solana Compass. Blocks kept being produced and finality was never interrupted. The weak point was infrastructure concentration, not consensus.

Agave 4.2 began activating on mainnet the week of August 17. Anza's release, recommended for mainnet adoption in August, carries three feature-gated upgrades: a 90% cut to rent, a 4,096-byte transaction format, and a halving of slot time from 400ms to 200ms in four 50ms steps. It also ships the code for Alpenglow, the consensus redesign approved by validator vote in September 2025 that replaces TowerBFT with Votor and targets roughly 150ms finality against about 12.8 seconds under the current protocol, but Alpenglow is not switched on in 4.2. Alpenglow ships in Agave 4.3: the Foundation's 4.2 overview pointed to October, but the release schedule Anza published on August 12 moved the mainnet target to September 28, with validator adoption stepping up through September and every date marked tentative, per Solana Compass. See Solana Alpenglow explained for what that means at a checkout.

Total stablecoin supply ended August at about $309 billion, up from about $305 billion at the end of July and still below the May 17 peak of about $321 billion, per DefiLlama's stablecoin series.

Circle kept minting USDC on Solana through August, including a $1.25 billion burst in mid-to-late August, and USDC on Solana ended the month at about $8.1 billion, above 10% of all USDC in circulation for the first time, per Solana Compass. The mint totals are derived from transaction monitoring, not a Circle disclosure.

PayPal's PYUSD now sits inside a "Payment Services & Crypto" unit, one of three business lines from the company's April reorganization. We could not confirm a PayPal-sourced PYUSD supply figure for August, so we quote none.

PeckShield's tally, as reported by BeInCrypto, counted 50 major hacks in August, the highest monthly count of 2026, while total losses fell 49.5% month over month to $136.3 million. The average loss dropped to about $2.7 million from roughly $9 million in July; Tectonic, on Cronos, accounted for about $74 million alone. None of it touched card rails. For what a cardholder can control, see crypto security basics for card users.

Method: aggregated, anonymized SolCard data, settled and authorized purchases plus paid deposits, August 1-31 versus July 1-31; shares and growth rates only.

Purchases grew 13% month over month (July grew about 10%) and deposits grew 17%. Solana carried 64% of deposits (66% in July), Ethereum 17%, BSC 12%, and Arbitrum, Polygon, Base and Avalanche the rest. By asset, stablecoins were 57% of deposits -- USDT 32%, USDC 25% -- and SOL was 43%. The largest single pair was SOL on Solana at 43%, then USDC on Solana at 12% and USDT on BSC at 11%.

• Discretionary spending led. Shopping (+39%), gaming (+48%), app stores (+28%) and streaming (+27%) all grew well ahead of the 13% average.
• AI tools and advertising cooled. AI tools slipped 5% in transaction count while the average AI ticket rose about 38%, which reads as fewer, larger renewals rather than people leaving. Advertising fell 10%.
• Stablecoins are the majority funding rail; SOL is the largest single asset. USDT arrived over three networks, and Solana's share of deposits dipped two points as BSC grew.

• CLARITY Act cloture vote on the Senate's return: 60 votes to open debate; a yes starts amendments, not enactment.
• GENIUS comment period: comments on Treasury's Section 3 proposal are due October 19; September is when issuers and exchanges file.
• Alpenglow activation: Anza's tentative Agave 4.3 schedule targets mainnet on September 28.
• Visa's settlement run rate. On September 8 Visa said stablecoin settlement had passed a $20 billion annualized run rate, up more than 15x year over year, per The Block.
• MiCA follow-through: which other EEA platforms complete USDT removals, and which euro stablecoins fill the gap.

None of August's network news changes what happens at a checkout terminal; it is about how money settles behind the merchant. When you pay with a SolCard, the balance is already in fiat, so the purchase never waits on a blockchain. That is also why the Solana incident did not touch card spending: a loaded card never touches the chain.

The regulatory items matter more over time. If the GENIUS rules take effect as proposed, US-facing platforms will need licensed issuers behind the stablecoins they offer by July 2028, and MiCA shows what that looks like: some coins get removed, others take their place. SolCard accepts SOL, USDC and USDT over Solana and USDC or USDT over Ethereum, BSC, Arbitrum, Base, Polygon and Avalanche, and holds the balance in fiat once loaded, so which stablecoin you deposit is a funding-time choice, not a spending constraint. How to pay with crypto walks through it.

No. On August 12 a routing failure at one hosting provider took about 90 validators and 28.83% of staked SOL offline for roughly 33 minutes, per Solana Compass. The halt threshold is 33.34%; blocks kept being produced and finality was not interrupted.

It defines who may issue, offer or sell a payment stablecoin in the United States. From January 18, 2027 issuers generally need a federal or state license, and from July 18, 2028 service providers generally may only offer stablecoins from licensed issuers, per Treasury. Comments are due October 19, 2026.

No. GENIUS is already law and covers payment stablecoins. CLARITY is a separate market-structure bill dividing oversight between the SEC and CFTC; as of August it had cleared a motion to proceed but not a 60-vote cloture vote, per CoinDesk.

Because of MiCA, the EU's crypto framework. Tether has not sought authorization under it, so compliant platforms have been removing USDT for EEA customers; trade outlets such as The Paypers reported Revolut's cutoff as August 31. Support outside Europe is unaffected.

August was the month stablecoin settlement stopped being a pilot at the card networks and became a product line: Mastercard owns its stack, Visa is assembling one through partners. Treasury's proposed issuer rules give the US a rulebook to argue over, while MiCA showed what enforcement looks like for a coin that opts out. Solana survived a real infrastructure scare without a halt and has a September 28 target for Alpenglow. On our side, purchases grew 13%, deposits 17%, and stablecoins were the majority of what came in. September's edition follows the same structure.

• Mastercard -- Mastercard to Acquire BVNK to Connect On-Chain Payments and Fiat Rails
• BVNK / Mastercard -- Mastercard completes acquisition of BVNK
• Zero Hash -- Zero Hash Powers Stablecoin Payout and Prefunding Capabilities for Visa Direct
• CoinDesk -- Visa looking for new stablecoin settlement partner after BVNK sale to Mastercard
• CoinDesk -- South Korea's Shinhan Financial taps Visa to build AI and stablecoin payments
• Quartz via Yahoo Finance -- Kraken launches cashback debit card in the U.S.
• Kraken -- Krak Card launches in the US
• PYMNTS -- Kraken Brings Multi-Asset Debit Card to US Market
• U.S. Treasury -- Treasury Seeks Public Comment on GENIUS Act Proposed Rulemaking
• CoinDesk -- U.S. Treasury Department proposes GENIUS Act stablecoin rule
• SEC -- SEC Proposes New Regulation Crypto Assets
• CoinDesk -- U.S. Senate opens first stage of crypto Clarity Act voting
• The Paypers -- Revolut to delist USDT for EU users under MiCA
• Solana Compass -- TeraSwitch Routing Failure: 28.83% of Staked SOL Goes Delinquent
• Solana -- Agave 4.2 Release Overview
• Solana Compass -- Anza publishes Agave 4.3 release schedule; Alpenglow consensus targets September 28 mainnet activation
• The Block -- Visa stablecoin settlement tops $20 billion annualized run rate
• DefiLlama -- Stablecoins market cap
• Solana Compass -- Circle Mints $11B USDC on Solana in August 2026
• PayPal -- PayPal Announces Strategic Reorganization to Accelerate Growth
• BeInCrypto via Yahoo Finance -- August Broke 2026's Monthly Hack Record Even as Losses Fell 49%