Yes, you can absolutely pay for Shinkansen (bullet train) tickets with a credit card in 2026. Major international cards like Visa, Mastercard, American Express, and JCB are widely accepted at both the Midori no Madoguchi (ticket offices) and automated ticket machines at JR stations. Additionally, you can book and pay for tickets online through official JR websites or travel apps like NAVITIME, which also support Apple Pay and Google Pay. For 2026 travelers, using a credit card is often the preferred method because it provides "purchase protection" and allows you to avoid carrying large amounts of cash. Note that when using an automated machine, you may be required to enter your card's 4-digit PIN. For some short-distance non-reserved trips, you can even bypass the ticket counter entirely by tapping your IC card (like Suica or Pasmo) at the gate, provided it is linked to a valid payment source.