Square, the payments platform founded by Jack Dorsey, enabled Bitcoin payment integration for its merchants in the United States on November 10, 2025. Over 4 million merchants using Square terminals can accept Bitcoin as a payment method at their points of sale (zero fees until 2027).
The Bitcoin Payments infrastructure uses the Lightning Network (Bitcoin Layer 2) for instant payments: each merchant can choose whether to receive the amount in Bitcoin or dollars. This allows merchants to accept BTC directly from the POS, automatically converting the proceeds into fiat currency, or keep them in BTC, depending on their preferences. Starting January 1, 2027, a flat 1% fee per transaction will apply, which is still lower than the costs of traditional circuits like Visa, Mastercard, or Amex (which vary from 1.5% to 4% depending on the state). Bitcoin Payments is initially available only for in-person transactions at the physical point of sale. In the future, it will also be implemented for online sales and electronic invoicing for e-commerce. Essentially, every transaction takes place off-chain via Lightning. At the time of payment, the Square POS generates a Lightning QR code with the amount denominated in BTC. As soon as the payment is processed, Square handles the BTC-USD conversion if the seller has chosen to receive fiat (the conversion is instantaneous based on the BTC spot price).
Square then takes care of receiving the satoshi from the customer via Lightning and crediting the dollars to the seller, or vice versa. If the seller prefers to receive BTC directly, Square provides a native Bitcoin wallet.
Main advantages for sellers?
1) 0 commissions until 2027 and then 1%, which is still lower than traditional Visa and Mastercard circuits.
2) No need for anti-fraud insurance.
3) Ability to accumulate BTC without purchasing it directly from exchanges.
From the customer's perspective, honestly, there are no particular advantages to paying in BTC (aside from greater privacy than credit cards. Even though transactions are public, there's no one monitoring your spending on-chain).
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