Block rolled out Bitcoin payment acceptance across its network of 4 million Square merchants on November 10, 2025. Customers pay by scanning a QR code, with transactions settled instantly via the Bitcoin Lightning Network. Block is waiving all processing fees on Bitcoin payments until 2027.
Lightning Network Integration
The Lightning Network enables near-instant Bitcoin transactions at a fraction of on-chain costs. Square terminals generate a Lightning invoice QR code at checkout; the customer scans with any Lightning-compatible wallet. Settlement is immediate - merchants receive funds in seconds rather than the typical 1-2 business day card settlement cycle.
Zero-Fee Strategy
By waiving processing fees until 2027, Block is undercutting card interchange (typically 1.5-3.5%) to drive adoption. The strategy mirrors how instant payment systems like UPI and PIX gained merchant traction through zero or near-zero pricing. Block absorbs the Lightning Network routing fees during the promotional period.
What This Means
This is the first integration of cryptocurrency payment acceptance into a major point-of-sale network at scale. While Bitcoin payment volume at merchants has historically been negligible, the combination of zero fees, instant settlement, and integration into existing Square hardware removes the friction that previously limited adoption. The competitive pressure on card interchange economics is notable - if even a small percentage of transactions shift to zero-fee Lightning rails, it changes the conversation about payment processing costs.