The tray by the register: how money quietly changes hands in Japan

At almost every register in Japan, between you and the cashier, sits a small shallow tray. It is called a karuton (カルトン), and it settles a question most visitors never knew they were asking: where the money goes.

What the tray is for

Place your cash or card in the tray rather than holding it out. The cashier takes it from there and counts it in view, so the exchange happens without fingers meeting. It is less about hygiene than clarity, since both people can see exactly what was handed over.

Many trays have a ribbed rubber surface, so coins sit slightly raised and are easy to pick up. On a busy morning at a convenience store, this is part of why a line of ten moves faster than it looks.

The words that go with it

As the cashier picks up your notes, you will often hear the amount said aloud before any change is counted. It works as a small spoken receipt, confirming what was received before anything is returned.

一万円お預かりします。(Ichi-man en o-azukari shimasu: "I am holding ten thousand yen.")

Change, and what to do with it

Change usually comes back by hand: notes first, sometimes counted again in front of you, then coins with the receipt. Take it as it is offered rather than waiting for it to land in the tray. No tip is expected, and coins left behind can earn you a polite chase to the door.

Now that cards and phone payments are common, the tray sees less use than it did a decade ago. It is still there at the ramen counter and the station kiosk, a small square of manners you can follow without saying a word.