In 2026, the Japan Rail Pass (JR Pass) is generally not useful or cost-effective if you are staying only within Tokyo. The JR Pass only covers the JR-operated lines, such as the iconic green Yamanote Line, the Chuo Line, and the Keihin-Tohoku Line. It does not cover the extensive Tokyo Metro or Toei Subway networks, which serve many popular tourist spots like Asakusa, Roppongi, and the Ghibli Museum area. To navigate those, you would still need a separate Suica/Pasmo card or a Metro pass. Furthermore, since the 2023 price hike, a 7-day JR Pass costs ¥50,000, which is mathematically impossible to "break even" on using only local city trains (where fares are typically ¥150–¥300). The pass only becomes "worth it" if you are taking multiple long-distance Shinkansen trips to cities like Kyoto, Hiroshima, or Kanazawa. For travel exclusively within Tokyo in 2026, you are much better off using a contactless IC card (Suica) or a Tokyo Subway 72-hour Ticket, which provides unlimited rides on all non-JR subway lines for a fraction of the price.