(かきん)

かきん
noun, suru verb
billing; charging; in-app purchase
1. billing; charging a fee
imposing or collecting fees for a service
利用(りよう)時間(じかん)(おう)じて課金(かきん)される。
You are charged based on usage time.
月額(げつがく)課金(かきん)のサービスだ。
It's a monthly subscription service.
従量(じゅうりょう)課金(かきん)(せい)料金(りょうきん)()まる。
The fee is determined by usage-based billing.
2. in-app purchase; microtransaction
paying for items or features within a game or app
ゲームに課金(かきん)しすぎた。
I spent too much on in-app purchases in the game.
課金(かきん)しないと(つよ)くなれない。
You can't get stronger without paying.
無課金(むかきん)(あそ)んでいる。
I play without spending any money.

FORMATION:
() (impose, assign) + (きん) (money) → impose money/charges

VERB FORM:
課金(かきん)する (to charge, to bill; to make in-app purchases)

RELATED COMPOUNDS:

  • 課金(かきん)(せい) (fee-based system)
  • 従量(じゅうりょう)課金(かきん) (usage-based billing)
  • 月額(げつがく)課金(かきん) (monthly billing)
  • 無課金(むかきん) (free-to-play without paying)
  • 廃課金(はいかきん) (excessive in-app spending - slang)
  • 微課金(びかきん) (light spending - slang)

MODERN USAGE:
The word has gained a new colloquial meaning in gaming culture, referring specifically to in-app purchases in mobile/online games. "課金(かきん)する" can mean "to pay real money in a game," often for gacha (loot box) systems or premium items.