Meaning of “compound interest” in the English Dictionary

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"compound interest" in Business English

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compound interestnoun [ U ]

uk us

FINANCE interest that is calculated on both the amount of money invested or borrowed and on the interest that has been added to it:

Thanks to the power of compound interest, every €1 you invest in your 20s is worth €2 in your 30s and €3 in your 40s.

(Definition of “compound interest” from the Cambridge Business English Dictionary © Cambridge University Press)