Tipping culture in Japan is a little different
If you are from a country where tipping is routinely practiced, it may come as a surprise that this is rare in Japan. If you are visiting bars, cafes, or restaurants, taking taxis or staying in hotels, tipping is not expected. In special cases, a small gratuity is sometimes given to express gratitude if someone goes above and beyond to help.
There is one case, however, when tipping might be appropriate. If you have a private guide, or interpreter—someone who is used to western practices—then they may accept a tip from you (although it is certainly not expected). If you do decide to tip, make sure to put any bills in an envelope. You can buy these at convenience stores or 100 yen shops.