Squaremouth is primarily a travel insurance comparison website that connects customers with various insurance providers. While Squaremouth itself does not issue insurance policies, it serves as a platform for comparing and purchasing insurance plans. The payment methods available for purchasing travel insurance policies will depend on the individual insurance providers listed on the Squaremouth website. Typically, these providers accept major credit cards, which may include Visa, MasterCard, and American Express. Additionally, some may offer other payment options like PayPal or bank transfers. Therefore, it is advisable for customers to review the payment details specific to each insurance provider when finalizing their purchase. For the most accurate information, customers can always check the details on the relevant insurance provider's page that they are interested in.