How to say "installment" in Japanese
Choosing the right word
- 掛け金かけきんnounThe common word for installment in the money sense: a payment made toward something being paid off over time. It also covers premiums and bills, so the emphasis falls on the payment itself.
- nounA katakana rendering of the English word itself. It is less common, so it is seldom the word you want; 掛け金 normally covers the money-payment sense.
- 一回分いっかいぶんnounMeans the amount for one time: one dose of a medicine, or one installment out of a series. It points to a single installment rather than the payment plan as a whole.
For money paid in installments, the common choice is 「掛け金」; 一回分 means a single installment or one dose; the katakana 「インストールメント」 is a less common loanword you will rarely need.
Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only
Japanese equivalents
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