Block's Cash App rolls out USDC payments to 15M users
In brief
- Block deployed USDC payments to 15 million Cash App users on May 27, covering 25% of 60 million monthly active users
- Solana-settled transactions offer instant USDC-to-USD conversion with zero gas fees and no separate wallet required
- Non-Cash App users can send USDC via standard Solana wallet addresses for expanded interoperability
- Full rollout expected to reach all users by week's end
- Move could boost Solana transaction volume and strengthen Circle's USDC against Tether's USDT dominance
Mechanics and User Experience
Each Cash App user receives a unique blockchain deposit address for USDC transactions. The conversion between USDC and USD happens automatically within the app. Notably, anyone not just other Cash App users can send USDC to a Cash App account using a standard Solana wallet address, broadening the feature's reach beyond the Cash App ecosystem.
Block chose Solana as the settlement layer, leaning into the network's speed and low transaction costs. Ethereum mainnet would have imposed higher friction. The architecture eliminates intermediary steps that plague traditional stablecoin onramps.
Strategic Implications
USDC is pegged 1:1 to the US dollar, backed by cash and short-dated Treasuries held in reserve. Block first announced the stablecoin integration back in November 2025, outlining plans to add USDC support on Solana aligned with the broader rollout. Cash App has supported Bitcoin for years, letting users buy, sell, and make payments via the Lightning Network. The USDC feature extends that crypto-native infrastructure.
Solana stands to benefit from a potentially massive increase in transaction volume as Cash App scales USDC payments across its full user base. When a platform with nearly 60 million monthly active users starts routing transactions through a specific blockchain, the downstream effects are significant. Cash App's integration could meaningfully boost USDC's circulation and daily transaction volume, strengthening its competitive position against Tether's USDT dominance.
Revenue and Regulatory Headwinds
Block could earn on conversion spreads, transaction fees, or yield generated from USDC reserves held on behalf of users. The economics remain favorable compared to legacy remittance services, which charge fees in the range of 5-10%. Yet stablecoin legislation in the US remains in flux, and any future regulatory framework could impose requirements that change the economics of offering these services.
PayPal launched its own stablecoin. Stripe acquired Bridge for stablecoin payments. The fintech race for stablecoin infrastructure is intensifying, and Cash App's scale puts Block in a credible position to capture a meaningful slice of on-ramp volume.
