Chatgpt gives these after searching:

Here are some of the best bitcoin payment processors in the US for accepting large payments, providing options to keep BTC or convert it to fiat:

1. **Coinbase Commerce**: Ideal for integrations, it supports multiple cryptocurrencies with no payment fees and offers features like hosted checkout pages, customized payment buttons, and volatility shielding. It integrates with popular platforms like Shopify and WooCommerce [[❞]](https://coincodecap.com/best-bitcoin-payment-processors) [[❞]](https://www.merchantmaverick.com/best-cryptocurrency-payment-gateway/).

2. **BitPay**: Known for its robust security features and support for various cryptocurrencies. BitPay offers direct bank deposits, email, mobile, and server payment notifications. It has a transaction fee of 1% and supports fiat settlements [[❞]](https://www.guru99.com/best-bitcoin-payment-gateways.html) [[❞]](https://www.devteam.space/blog/10-best-bitcoin-payment-gateways/).

3. **NOWPayments**: This processor is praised for its low transaction fees (0.5% for standard transactions) and supports over 75 cryptocurrencies. It offers non-custodial solutions and various tools like API, invoices, and widgets [[❞]](https://www.merchantmaverick.com/best-cryptocurrency-payment-gateway/) [[❞]](https://www.guru99.com/best-bitcoin-payment-gateways.html).

4. **CoinPayments**: Operating since 2013, CoinPayments supports over 2000 cryptocurrencies and provides multiple e-commerce plugins. It charges a 0.5% fee and offers features like a vault for extra security and coin swap for some altcoins [[❞]](https://www.guru99.com/best-bitcoin-payment-gateways.html) [[❞]](https://insights.blockonomics.co/top-bitcoin-payment-processors-2021/).

5. **CoinsPaid**: This gateway supports more than 20 cryptocurrencies and over 40 fiat currencies. Known for its comprehensive set of tools, CoinsPaid charges around 1% per transaction and offers robust security measures [[❞]](https://coincodex.com/article/39025/best-crypto-payment-gateways/).

6. **CoinGate**: Supports over 50 cryptocurrencies and integrates with various e-commerce platforms. It charges a 1% transaction fee and offers features like payment buttons, point of sale support, and Lightning Network support [[❞]](https://coincodecap.com/best-bitcoin-payment-processors) [[❞]](https://insights.blockonomics.co/top-bitcoin-payment-processors-2021/).

7. **BTCPay Server**: An open-source, self-hosted solution that supports Bitcoin and other altcoins. It does not charge any fees and provides features like invoicing, QuickBook integration, and point of sale support. However, it does not offer fiat settlements [[❞]](https://coincodecap.com/best-bitcoin-payment-processors) [[❞]](https://coincodex.com/article/39025/best-crypto-payment-gateways/).

Each of these payment processors offers distinct features and fee structures, so the best choice depends on your specific business needs and priorities.