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 there is no such culture in Japan. This might be especially shocking as the standard of customer service in Japan is often regarded as the best in the world. If you are visiting bars, cafes, or restaurants, taking taxis or staying in hotels, there is simply no need to tip.
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.